Hubbell Sockets - Patent Research Section - Lamp - Light - Fixture - Patents - Vintage

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Post pictures of your items and ask questions or just learn from reading the posts from others

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View or upload ads from antique magazines
Bulb & Socket Bases
View images of the most well known bulb and socket bases

Patent Utilities
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Lets You Pull Up Any Patent PDF File Or Link One Directly To Your Web Page
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Lets You Download The First Page Patent Picture Of Every Patent On A Single Day To View On Quickly Your Local Computer
MultiView Search
Lets You Search For Patents Using Advanced Methods And Provides Hyper Links To The Patent Office And Google Patents

For Sale & Misc Area

I have not had much time to get many items in the forsale area below. Please keep checking back as I will start adding more items soon.

Items For Sale

Cord Balls & Adjusters
NEW - My cord pendant adjuster project, as well as a good history about them.

Socket Dating Methods

Switch Material
Electrical Code
Mica Insulation
CP or WATTS Marks
Socket Bead/Rib/UNO
Catalogs & Ads
Patents
Pull Chains / Finials

Socket & Electrical Manufacturer's Items And Their History

GECO Sockets
NEW - This section will allow you to date and learn how to tell one GECO socket from the other.
Hubbell
This is where this site started from. Since this page was done, there has been much more Hubbell history and information found which will make for a complete redesign of this page and section in the soon future.
Hubbell Patents
This section has some early patent research on Hubbell. It is mostly complete with only a few missing patents which will be added in when this section is re done into the new format
Wheeler Reflector Co.
NEW - A history of The Wheeler Reflector Company and tips on how to tell if mirror has been replaced on a shade
Other Manufacturers
This section is a lot of incomplete work and will be updated shortly. For now it serves to give you some extended information on some companies, but will be a much better tool when it is complete
NEC
This section is everything you ever wanted to know about the National Electrical Code (NEC) but had no one to ask. Downloads of old NEC's, meetings and much extended information is provided.

Identify PRE-1900 Sockets

GECO Sockets

More companies will be added to this list in the near future. We will also be adding a new list of post 1900 sockets and items.
Bergmann & Co.
Brush Electric Co.
Bryant Electric Co.
Crown Elect MFG Co.
EE&S
Holmes & Gale (HG)
Perkins
Thomson-Houston
Westinghouse

Tutorial And Early Lighting History

The Lighting Time Table

To read the entire tutorial, you can just click on the first link and then continue to the next section at the bottom of each page. Or, you can select links below of interest to you.

PRE 1900 SECTION

Overcoming Obstacles
About Early Electric Lighting, Generators, Arc Lamps, The First Edison Socket, Menlo Park, etc.
The First Fixtures
About The Start Of The First Incandescent Lighting Fixtures
Light Reflection
About Early Light Bulbs And Candle Power vs. WATTS
Edison-Bergmann
About Sigmund Bergmann And The Start Of Bergmann And Company Lighting Fixtures
Lighting Break Down
A Quick Break Down Of Different Lighting Time Periods
Styles 1881 to 1884
Bergmann Fixtures And Styles
Other Pre-1888 Styles
About Early Companies That Sold Lighting Systems And The Fixtures That They Sold With Their Lighting Systems
The U.S. Elect. Co.
The United States Electric Company History And Early Items
The Brush Elect. Co.
The Brush Electric Company History And Early Items
Thomson-Houston
The Thomson-Houston Electric Company History And Early Items
Westinghouse
About The Westinghouse Manufacturing Company History And Early Mergers
Mid 1880's Styles
About The Start Of Electrical Supply Houses and how new lighting styles came about
Pre 1900 Sockets
About Early Light Sockets And How To Tell The Difference
1887 New Items
1888 New Items
1890 New Items
1891 New Items
1892 New Items
1893 New Items
1894-1896 Items
1897 New Items
1898 New Items
1899 New Items
Above are catalog items sold in different years. There is no space to duplicate items, so only new and unique items from each year are shown. You would need to view the catalogs for yourself to be complete as I am only highlighting items. You can view catalogs here.

EXTRA INFO
Victor Shade Holder
About The Victor Shade Holder, Atwood And The Standard Holder

I.P. Frink 1899 Items
About Frink & Wheeler
New Wheeler Inverted
Three Links About Mirror Reflector Manufacturers And Their Items And History.
Wheeler Reflector Co.
NEW - A history of The Wheeler Reflector Company and tips on how to tell if mirror has been replaced on a shade

Early Desk Lamps
Some Help In Telling Them Apart

Vitrite And Luminoid
About The Vitrite Holders And Early Vitrite History

Brush-Swan Holder
About Brush-Swan Shade Holders

Cord Balls
My cord pendant adjuster project, as well as a good history about them.

POST 1900 SECTION

About 1900 Styles
This section covers a basic into into the 1900 section covering information about the 1899 transition, electrical code changes, lighting influence, sharing and licensing of patents and then into the new section of electrical specialty manufacturers,

Electrical Specialty Manufacturers
Harvey Hubbell
This section covers some early history periods of pre Hubbell-Grier, Hubbell-Grier, Harvey Hubbell, Hubbell Company. It also covers a number of items that helped change lighting styles,

Benjamin
This section covers some early history periods for the Benjamin Electric MFG. Co, as well as a small section on Dale and The Federal Electric Company
Dale
Federal Electric

This post 1900 section continues to be under current construction

Please Check Back.

DATING HINTS - Hubbell Patents

PATENTS - Help viewing full patents

Note: This page is soon to become outdated as I finish linking all of the patents to our new patent linker system. Try using some of our new patent utilities shown in the links on your left. The information below is only for either trying to use the patent office tiff files or for tiff files we still have on our site. Soon all of the tiff files will be replaced with easy to view pdf files.

If you would like to view and read the entire patent, the best way is to read the TIFF files from the US Patent office.
To do this you would need a good plugin for a TIFF reader. If you are using the QuickTime reader you can miss most if not all of the images because of cache problems. The best reader that I have found to use is AlternaTIFF

It has many nice options and has never messed up on me. If you wish to install it now, book mark this page or save it to your favorites first so that you can come back here easily. Then go to http://www.alternatiff.com/ and install the plugin. After you install it close your browser and come back to this page. All of the TIFF links should then work with no problems.

Some quick search tips if you go to the patent office online at http://patft.uspto.gov/netahtml/PTO/search-adv.htm
You always need to use advanced mode to find older patents.
Be sure to always select Year 1790 to present
To search for a patent number type in: (PN/xxxxxx)
You type the number where xxxxxx is and it must have the ( ) around it. Then click on Search
To look for all of the patents on the date May 8th 1900 you would type: (ISD/19000508)
The format would be year month day (complete year 1900 not 00)
To look for Inventor name you could type: (IN/"HARVEY HUBBELL")
Or you could use (IN/HARVEY AND HUBBELL)
(TTL/LAMP AND SOCKET) TTL is what you would use to search the title area of the patent

Patents from 1790 through 1920 are searchable only by Issue Date and Patent Number.
These kinds of searches shown above can only bring back patents after 1920.
To search before 1920 you will need know the patent number OR the date of the patent.
You can search a date using ISD/XXXXX then look through all of the patents for that day.

Another method would be to search U.S. Class or sub classes:
Once you find an item of the same type that you are looking for, the search result page will display the category that the patent has been filed into. Example patent number 565541 is found in Current U.S. Class: 200/420.
You can search for other patents that are in the same class and sub class using the search terms:
(CCL/200/420). To search through an entire category and all of the sub classes at once use the term (CCL/200/$)

I have already done some of the work for this Hubbell section and added links for the patents below

Patent No. / Links	Description / Notes	Patent Picture
565541	SOCKET FOR INCANDESCENT LAMPS
View Page 1 View Page 2 View Page 3 Patent Class 200/420 Help	Patent Applied For: 06/06/1896 Patent Approved On: 08/11/1896
The first pull socket. This version was before pull chains were used. It used a tuna line string.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
576404	AUTOMATIC TAPPING MACHINE
View Page 1 View Page 2 View Page 3 View Page 4 Patent Class 408/95 Help	Patent Applied For: 10/17/11896 Patent Approved On: 02/02/1897
This was a tapping machine which allowed him to drill a hole and stop automatically when the size of the hole was at the desired preset.

Patent No. / Links	Description / Notes	Patent Picture
649308	INCANDESCENT LAMP SOCKET
View Page 1 View Page 2 View Page 3 Patent Class 200/420 Help	Patent Applied For: 10/09/1899 Patent Approved On: 05/08/1900
This socket was the first pull "chain" socket. It does not use the Edison style screw base. This model only has two patent dates on the shell. Aug.11.96 & May 8.00 It may be marked with the Hubbell-Grier Elect Co. above the patent dates. It is assumed that the lid screw threads into the body of the shell by use of the threaded rivet hole as in the 1901 patent. More Info...

Patent No. / Links	Description / Notes	Patent Picture
679316	ELECTRIC SWITCH SHELL
View Page 1 View Page 2 View Page 3 Patent Class 200/303 Help	Patent Applied For: 01/28/1901 Patent Approved On: 07/30/1901
This patent had more to do with socket shell styles. Even though the pictures may not match the socket type you may have (that contains this patent date), some of the parts of your socket are covered by this patent. (such as the socket cap) Thus the reason for including the date of this patent along with other patent dates. More Info...

Patent No. / Links	Description / Notes	Patent Picture
693799	PULL SOCKET
View Page 1 View Page 2 View Page 3 Patent Class 200/420 Help	Patent Applied For: 07/24/1901 Patent Approved On: 02/18/1902
This patent was added for the full socket. The 1901 patent was only used to show how the cap screw threaded into the base. This 1902 patent was the first patent to describe the new switch style for the sockets of this period. More Info...

Patent No. / Links	Description / Notes	Patent Picture
701269	SWITCH CLUSTER OPERATING DEVICE
View Page 1 View Page 2 View Page 3 View Page 4 Patent Class 200/331 Help	Patent Applied For: 09/04/1901 Patent Approved On: 05/27/1902
This was a cap that allowed someone to link two or more pull chains together and have a single pull. There were other devices on the market that did the same thing, but did not require you to clip the acorns off the end to use it, as this one did. This patent helps you to date your item to (a possible) post 1901 if it is using this after market device.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
720808	INCANDESCENT LAMP SOCKET
View Page 1 View Page 2 View Page 3 Patent Class 439/753 Help	Patent Applied For: 05/26/1902 Patent Approved On: 02/17/1903
This is the Patent that should be found on most sockets that you find with the Feb. 18th 1902 No. 693799 patent. Hubbell changed the shell type, but for some reason left the old patent dates on this and future new shells. You will not find a shell with this patent date even though it is the more common shell type with the riveted cap. More Info...

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
734874	SHADE HOLDER
View Page 1 View Page 2 Patent Class 362/434 Help	Patent Applied For: 03/05/1902 Patent Approved On: 07/28/1903

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
734875	CLUSTER CENTER FOR INCANDESCENT LAMPS
View Page 1 View Page 2 View Page 3 Patent Class 248/344 Help	Patent Applied For: 10/27/1902 Patent Approved On: 07/28/1903
There were several of these patents applied for with different switch and mounting methods. There was a rare release (patent pending) that was not approved. This was called THE HUBBELL STANDARD PULL CLUSTER patent applied for on 05/27/1902 and came with four sockets with pull chains hanging as shown in the patent above no. 701269. It could be that it did not get a patent because each of the parts in the cluster are already covered in other patents.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
734876	CLUSTER SWITCH
View Page 1 View Page 2 View Page 3 View Page 4 View Page 5 View Page 6 Patent Class 200/544 Help	Patent Applied For: 11/21/1902 Patent Approved On: 07/28/1903
There were several of these patents applied for with different switch and mounting methods. There was a rare release (patent pending) that was not approved. This was called THE HUBBELL STANDARD PULL CLUSTER patent applied for on 05/27/1902 and came with four sockets with pull chains hanging as shown in the patent above no. 701269. It could be that it did not get a patent because each of the parts in the cluster are already covered in other patents.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
753077	SHADE HOLDER
View Page 1 View Page 2 View Page 3 View Page 4 Patent Class 362/434 Help	Patent Applied For: 06/11/1903 Patent Approved On: 02/23/1904
This was a bead slip over for older shells that only had the bead on the shell and no threads. This device supplied the threads for shade holders that needed to be screwed on. There is a photo and more information about this item linked here.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
774250	SEPARABLE ATTACHMENT PLUG
View Page 1 View Page 2 Patent Class 439/682 Help	Patent Applied For: 02/26/1903 Patent Approved On: 11/08/1904
This was the first plug. This adapter could be screwed into a light bulb socket. The adapter has two holes which matched the prongs on this device Hubbell called the "separable attachment-plug". Hubbell wrote, "electrical power in buildings may be utilized by persons having no electrical knowledge or skill in the use of tools in attaching lights, fans, motors, heating apparatus, surgical instruments, or any of the various appliances requiring the use of an electric current to fixtures in the circuit."

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
774251	SEPARABLE ATTACHMENT PLUG
View Page 1 View Page 2 View Page 3 View Page 4 View Page 5 Patent Class 439/646 Help	Patent Applied For: 05/27/1904 Patent Approved On: 11/08/1904
This was a new version of the plug that was patent applied for several months after the first version shown above. Both of these were patent approved on the same day in Nov of 1904.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
776326	MULTIPLE ATTACHMENT PLUG
View Page 1 View Page 2 View Page 3 View Page 4 View Page 5 Patent Class 439/639 Help	Patent Applied For: 03/26/1903 Patent Approved On: 11/29/1904
This new version of the plug allowed the user to plug in multiple devices or lamps.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
783275	ATTACHMENT PLUG
View Page 1 View Page 2 View Page 3 Patent Class 439/734 Help	Patent Applied For: 07/01/1904 Patent Approved On: 02/21/1905
This was a new simple plug that cost less to produce. It also had a bottom to it which kept it from breaking like some of the earlier plugs.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
793195	SHADE HOLDER
View Page 1 View Page 2 View Page 3 View Page 4 Patent Class 362/440 Help	Patent Applied For: 11/07/1904 Patent Approved On: 06/27/1905
This was a simple and inexpensive shade holder that Harvey Hubbell said could be used by unskilled operatives.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
793196	SHADE LOCKING DEVICE
View Page 1 View Page 2 View Page 3 Patent Class 362/440 Help	Patent Applied For: 09/07/1904 Patent Approved On: 06/27/1905
This was the locking device to be used on shade holders like the one shown above. This patent was applied for before the one shown above. Both patents were approved the same day in 1905.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
793197	FLUSH ATTACHMENT PLUG RECEPTACLE
View Page 1 View Page 2 View Page 3 Patent Class 439/570 Help	Patent Applied For: 02/25/1905 Patent Approved On: 06/27/1905
This was the Hubbell's first wall plug outlet. Up to this time electrical devices were mostly being plugged into light sockets.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
817484	INSULATING SCREW SHELL
View Page 1 View Page 2 View Page 3 View Page 4 Patent Class 439/220 Help	Patent Applied For: 06/28/1905 Patent Approved On: 04/10/1906
This was a screw shell that was properly insulated for use with Thomson-Houston lamps. It came with an adapter for Edison lamps. By using this shell it made it "impossible" to unscrew a lamp and have the parts of the shell detach along with the bulb when unscrewing it. Harvey Hubbell said: "This invention has for its object to provide a simple and inexpensive insulating screw shell adapted for general use, and especially adapted for use as a socket shell for incandescent electric lamps of the Edison type and as an adapted to adapt Thomson-Houston sockets to receive Edison lamps. ... it is cheaper and very much better in every way to have the insulating lining, which is an essential feature of construction, an integral part of the screw shell rather than of the socket.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
817485	CHAIN GUIDE FOR PULL SOCKETS
View Page 1 View Page 2 View Page 3 Patent Class 200/329 Help	Patent Applied For: 07/14/1905 Patent Approved On: 04/10/1906
This device allowed you to extend the chain guide for applications where the chain would normally get in the way. This also allowed for someone to attach a chain guide to virtually any socket shell. This device came in varying lengths and attached through the shell by way of the inner part being turned outward against the inside of the shell while there was shoulder that rested against the outside of the shell holding it in place.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
817642	INCANDESCENT LAMP CLUSTER
View Page 1 View Page 2 View Page 3 Patent Class 439/340 Help	Patent Applied For: 09/01/1905 Patent Approved On: 04/10/1906
There were several of these patents applied for with different switch and mounting methods. There was a rare release (patent pending) that was not approved. This was called THE HUBBELL STANDARD PULL CLUSTER patent applied for on 05/27/1902 and came with four sockets with pull chains hanging as shown in the patent above no. 701269. It could be that it did not get a patent because each of the parts in the cluster are already covered in other patents.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
819657	CARTRIDGE FUSE AND FUSE BLOCK
View Page 1 View Page 2 View Page 3 Patent Class 337/213 Help	Patent Applied For: 10/29/1904 Patent Approved On: 05/01/1906
Harvey Hubbell: "My invention has for its object to provide a cartridge-fuse and fuse-block adapted for use in with either light or heavy electrical currents and especially adapted for use where heavy currents are used, which shall be so constructed as to eliminate the danger of exposed terminals..."...more

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
838860	INCANDESCENT LAMP GUARD
View Page 1 View Page 2 View Page 3 Patent Class 362/378 Help	Patent Applied For: 08/18/1906 Patent Approved On: 12/18/1906
This lamp guard used a device such like patent number 753077 to screw it on to the socket.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
857177	FLUSH SWITCH
View Page 1 View Page 2 View Page 3 View Page 4 View Page 5 Patent Class 200/552 Help	Patent Applied For: 11/16/1906 Patent Approved On: 06/18/1907
This easy push button switch worked by having a rocker inside that was moved up and down by pressing the slightly raised buttons. No springs or parts that normally break on switches needed to be used.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
872065	INCANDESCENT LAMP CLUSTER
View Page 1 View Page 2 View Page 3 View Page 4 View Page 5 Patent Class 439/541 Help	Patent Applied For: 10/13/1905 Patent Approved On: 01/26/1907
There were several of these patents applied for with different switch and mounting methods. There was a rare release (patent pending) that was not approved. This was called THE HUBBELL STANDARD PULL CLUSTER patent applied for on 05/27/1902 and came with four sockets with pull chains hanging as shown in the patent above no. 701269. It could be that it did not get a patent because each of the parts in the cluster are already covered in other patents.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
876552	SOCKET SHELL
View Page 1 View Page 2 View Page 3 View Page 4 Patent Class 200/293 Help	Patent Applied For: 03/05/1907 Patent Approved On: 01/14/1908
This socket shell screws together by means of a guide collar. It did not require any screws to attach the cap.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
877326	ELECTRIC LIGHT SOCKET CAP - J. H. GOSS
View Page 1 View Page 2 View Page 3 Patent Class 439/753 Help	Patent Applied For: 05/29/1907 Patent Approved On: 01/21/1908
This was a socket shell that was patented by J. H. Goss and used by Hubbell

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
878633	KEY SOCKET
View Page 1 View Page 2 View Page 3 Patent Class 200/51.17 Help	Patent Applied For: 03/06/1907 Patent Approved On: 02/11/1908
This was an electric key switch that used mica as an insulator. Harvey Hubbell: "This invention has for its object to produce a single-pole key socket which shall be inexpensive to make, perfectly certain and safe in use and practically impossible to get out of repair."

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
878634	SOCKET SHELL CAP FASTENING
View Page 1 View Page 2 Patent Class 200/293 Help	Patent Applied For: 09/05/1907 Patent Approved On: 02/11/1908
This seems to have been a short lived method of attaching shell caps using spring metal and a fastening method.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
890770	FIXED POLARITY SEPARABLE ATTACHMENT PLUG
View Page 1 View Page 2 View Page 3 Patent Class 439/678 Help	Patent Applied For: 09/05/1907 Patent Approved On: 06/16/1908
This plug was used for high potential electrical service with fixed polarity so that the current could not be reversed.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
892375	ELECTRIC SOCKET SWITCH
View Page 1 View Page 2 View Page 3 View Page 4 View Page 5 View Page 6 Patent Class 200/51.17 Help	Patent Applied For: 06/07/1907 Patent Approved On: 06/30/1908
This was an electric key switch that used mica as an insulator.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
900854	MEANS FOR LOCKING ELECTRIC SOCKETS TO FIXTURES
View Page 1 View Page 2 View Page 3 Patent Class 126/317 Help	Patent Applied For: 03/16/1907 Patent Approved On: 10/13/1908
This invention used two sets of threads in the shell cap with a screw connecting them. When the screw is tightened, the threads tighten down around the fixture's threads causing it to lock solid into the shell cap.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
921839	KEY SOCKET SWITCH
View Page 1 View Page 2 View Page 3 Patent Class 200/51.17 Help	Patent Applied For: 12/21/1908 Patent Approved On: 05/18/1909
This was an electric key switch that used mica as an insulator.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
923179	SEPARABLE ATTACHMENT PLUG
View Page 1 View Page 2 View Page 3 Patent Class 439/646 Help	Patent Applied For: 10/30/1908 Patent Approved On: 06/01/1909
This new plug was to cheapen the construction at the same time reduce the size. The attachment plug cap is now made from plastic composition or hard rubber. It also includes a new heat resisting disk to which electrical connections are attached.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
943076	KEYLESS SOCKET
View Page 1 View Page 2 View Page 3 Patent Class 439/666 Help	Patent Applied For: 01/02/1909 Patent Approved On: 12/14/1909
This socket uses mica as an insulator. Harvey Hubbell: "A reduced number of parts will enable me to greatly shorten the base and to produce a socket which shall be highly ornamental in appearance and shall be very much smaller both in diameter and length then any socket of this character heretofore produced."

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
943077	DETACHABLE CHAIN GUIDE FOR PULL SOCKETS
View Page 1 View Page 2 View Page 3 Patent Class 200/51.15 Help	Patent Applied For: 07/23/1909 Patent Approved On: 12/14/1909
This is the patent helps us date the switches found in early shells and gives us our starting date of July of 1909 for switches with the removable chain guide and May 1909 for those rare ones without the removable guide as in patent 956354. Another point is that we have also found many shells with all four Hubbell patent dates, but in every case the switches always have this detachable chain guide. While it is true that Hubbell could have started using this earlier and then added a patent for it later like he did with his threaded shell body, it is not likely. We see Hubbell starting to toy with the idea of different chain guides in 1905 under patent No 817485, but we have not found examples of any of these in use for these early socket shells.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
943078	MEANS FOR LOCKING ELECTRIC SOCKETS TO FIXTURES
View Page 1 View Page 2 View Page 3 Patent Class 285/149.1 Help	Patent Applied For: 09/04/1909 Patent Approved On: 12/14/1909
Harvey Hubbell: "...so far as I am aware, there has been no fixture of this character that would permit rotation of the socket cap independently of the bushing after the bushing was secured to the fixture."

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
943681	SEPARABLE ATTACHMENT PLUG
View Page 1 View Page 2 View Page 3 Patent Class 439/668 Help	Patent Applied For: 06/05/1908 Patent Approved On: 12/21/1909
This plug has been reduced by 50%. All of the contact parts are now held in the shell.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
946779	INSULATING CHAIN FOR PULL SWITCHES
View Page 1 View Page 2 Patent Class 174/138B Help	Patent Applied For: 05/17/1909 Patent Approved On: 01/81/1910
Harvey Hubbell: "It is of course well understood that pull switches are ordinarily operated by means of chains comprised of a series of hollow metal balls loosely connected together...These chains are not always perfectly insulated from the switches, the result of which is that a person operating a switch... receives more or less of a shock. My present device in the chain itself an insulating device which...will protect the user."

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
947547	SOCKET SHELL CAP FASTENING
View Page 1 View Page 2 View Page 3 Patent Class 439/753 Help	Patent Applied For: 09/11/1909 Patent Approved On: 01/25/1910
This was another attempt at a new cap snap lock before he came up with the more popular wrinkle shell.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
953834	LOCK GUARD FOR INCANDESCENT LAMPS
View Page 1 View Page 2 View Page 3 Patent Class 362/378 Help	Patent Applied For: 12/13/1909 Patent Approved On: 04/05/1910
Around this time there was a problem with theft. People were stealing light bulbs. This new invention Hubbell stated "thus rendering it impossible for a person to remove the lamp from the socket without being provided with a key."

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
954963	LOCK GUARD FOR INCANDESCENT LAMPS AND SOCKETS
View Page 1 View Page 2 View Page 3 View Page 4 Patent Class 362/378 Help	Patent Applied For: 12/13/1909 Patent Approved On: 04/12/1910
This was patent applied for the same date as above and is simply another style providing more security. This version protects the socket and the light bulb.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
956354	CHAIN GUIDE FOR PULL SOCKETS
View Page 1 View Page 2 Patent Class 200/51.15 Help	Patent Applied For: 05/17/1909 Patent Approved On: 05/26/1910
This patent was applied for before the removable chain guide. It is more rare to be found in use on switches because it was not used long. This was because it was a prototype of the removable guide that was invented only a few months after this model. In this patent he was already thinking about a removable method. This is seen where he states that the chain guide is screwed to both the top and bottom block, but one screw can be left off either the top or bottom block ("ordinarily to the lower block") which was explained for easy removal. The new removable guide was patent no. 943077

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
964519	SHADE HOLDER
View Page 1 View Page 2 Patent Class 362/434 Help	Patent Applied For: 02/25/1910 Patent Approved On: 07/19/1910
This shade holder also used the bead slip over for older shells that only had the bead on the shell and no threads. This device supplied the threads for shade holders that needed to be screwed on. There is a photo and more information about this item linked here.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
964520	SHADE HOLDER
View Page 1 View Page 2 View Page 3 Patent Class 362/434 Help	Patent Applied For: 02/25/1909 Patent Approved On: 07/19/1910
This patent was applied for and approved the same dates as the shade holder shown above. This heavy duty model was for larger more heavy shades.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
964646	ADJUSTABLE REFLECTOR FOR ELECTRIC LAMPS
View Page 1 View Page 2 View Page 3 Patent Class 362/446 Help	Patent Applied For: 02/25/1909 Patent Approved On: 07/19/1910
This lamp shade patent was applied for and approved the same dates as the shade holder shown above. This shade type is commonly seen on goose neck desk lamps and must use patent no. 753077 to fit the socket threads.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
964863	SEPARABLE ATTACHMENT PLUG
View Page 1 View Page 2 View Page 3 View Page 4 Patent Class 439/453 Help	Patent Applied For: 08/25/1909 Patent Approved On: 07/19/1910
This plug had a spring center.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
989013	LAMP GUARD
View Page 1 View Page 2 View Page 3 Patent Class 362/378 Help	Patent Applied For: 08/11/1910 Patent Approved On: 04/11/1911

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
994516	REVERSE ATTACHMENT PLUG
View Page 1 View Page 2 View Page 3 View Page 4 Patent Class 439/687 Help	Patent Applied For: 02/25/1910 Patent Approved On: 06/06/1911
The reverse attachment plug allows you to connect a plug on different devices for example the base of a motor, vacuum cleaner, fan, etc.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
994517	SEPARABLE ATTACHMENT PLUG
View Page 1 View Page 2 View Page 3 Patent Class 439/645 Help	Patent Applied For: 04/23/1910 Patent Approved On: 06/06/1911
Harvey Hubbell: "This invention relates to separable attachment plugs and has for its object to simplify, cheapen, and generally improve their construction and mode of operation."

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
994518	PULL SOCKET
View Page 1 View Page 2 View Page 3 Patent Class 200/420 Help	Patent Applied For: 07/21/1910 Patent Approved On: 06/06/1911
Here is our first patent example of a pull socket that does not have the horn attached to the shell, and that does not use mica as an insulator. It also will be using the detachable chain guide.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
994588	PULL SOCKET
View Page 1 View Page 2 View Page 3 Patent Class 200/420 Help	Patent Applied For: 07/21/1910 Patent Approved On: 06/06/1911
This patent was both applied for and approved the same day as the one above. This version only has a couple minor upgrades one namely being the adjustable spring and using a lug or nut to hold the tongue.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1012553	NESTING LAMP GUARD
View Page 1 View Page 2 View Page 3 Patent Class 362/376 Help	Patent Applied For: 05/11/1911 Patent Approved On: 02/19/1911
Previous lamp guards designs were not designed to be shipped for large orders. This new design allowed them to be stacked for both shipping and storage.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1012554	DETACHABLE LAMP GUARD REFLECTOR
View Page 1 View Page 2 View Page 3 Patent Class 362/344 Help	Patent Applied For: 06/17/1911 Patent Approved On: 12/19/1911
A new reflector was designed to work with these devices.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1022739	LOCK GUARD FOR INCANDESCENT LAMPS
View Page 1 View Page 2 View Page 3 View Page 4 Patent Class 362/344 Help	Patent Applied For: 11/29/1910 Patent Approved On: 04/09/1912
This guard was for light bulbs that were of the 'closed bottom' type. When using this guard the bulb could not be removed without removing the socket, and the socket could not be removed without the key for the device.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1022740	GUARD FOR INCANDESCENT LAMPS
View Page 1 View Page 2 View Page 3 Patent Class 362/378 Help	Patent Applied For: 11/29/1910 Patent Approved On: 04/09/1912
This was the standard version of the above for the open bottom type lamps.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1048167	KEY SOCKET
View Page 1 View Page 2 View Page 3 Patent Class 200/51.17 Help	Patent Applied For: 06/17/1911 Patent Approved On: 12/24/1912
This is a new example of key switch which no longer requires mica as an insulator.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1048168	KEY SOCKET
View Page 1 View Page 2 View Page 3 Patent Class 200/469 Help	Patent Applied For: 10/03/1911 Patent Approved On: 12/24/1912
This is another example of key switch which no longer requires mica as an insulator.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1048169	OPERATING ATTACHMENT FOR PULL SOCKETS
View Page 1 View Page 2 View Page 3 Patent Class 200/332 Help	Patent Applied For: 09/21/1912 Patent Approved On: 12/24/1912
This is an extender device for pull chains.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1053174	PULL SOCKET
View Page 1 View Page 2 View Page 3 View Page 4 View Page 5 View Page 6 Patent Class 200/51.15 Help	Patent Applied For: 06/17/1911 Patent Approved On: 02/18/1913
This was a new type of pull switch that did not go over well. It was around this time 1910-1915 that many different companies started coming out with their own versions of pull chain sockets. In fact the patent office even added/changed a category to be used only for pull chain sockets alone. It could be that Hubbell felt that his first invention took so well to the public that a new style would work in the same way, while at the same time separating himself from those that were copying his previous style. He stuck with this new style for almost two years before giving up and going back to his standard older pull chain styles.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1053175	PULL SOCKET
View Page 1 View Page 2 View Page 3 View Page 4 View Page 5 View Page 6 Patent Class 200/51.15 Help	Patent Applied For:06/17/1911 Patent Approved On: 02/18/1913
As above, this was a new type of pull switch that did not go over well. It was around this time 1910-1915 that many different companies started coming out with their own versions of pull chain sockets. In fact the patent office even added/changed a category to be used only for pull chain sockets alone. It could be that Hubbell felt that his first invention took so well to the public that a new style would work in the same way, while at the same time separating himself from those that were copying his previous style. He stuck with this new style for almost two years before giving up and going back to his standard older pull chain styles.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1053176	PULL SOCKET
View Page 1 View Page 2 View Page 3 View Page 4 Patent Class 200/332 Help	Patent Applied For:10/19/1911 Patent Approved On: 02/18/1913
As above, four months after the two patents shown above, we have yet another new type of pull switch that did still did not go over well. It was around this time 1910-1915 that many different companies started coming out with their own versions of pull chain sockets. In fact the patent office even added/changed a category to be used only for pull chain sockets alone. It could be that Hubbell felt that his first invention took so well to the public that a new style would work in the same way, while at the same time separating himself from those that were copying his previous style. He stuck with this new style for almost two years before giving up and going back to his standard older pull chain styles.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1053177	PULL SOCKET
View Page 1 View Page 2 View Page 3 View Page 4 Patent Class 200/51.15 Help	Patent Applied For:05/06/1912 Patent Approved On: 02/18/1913
Again as above, several months later, we have yet another new type of pull switch that did still did not go over well. It was around this time 1910-1915 that many different companies started coming out with their own versions of pull chain sockets. In fact the patent office even added/changed a category to be used only for pull chain sockets alone. It could be that Hubbell felt that his first invention took so well to the public that a new style would work in the same way, while at the same time separating himself from those that were copying his previous style. He stuck with this new style for almost two years before giving up and going back to his standard older pull chain styles.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1053178	OPERATING MECHANISM FOR PULL SOCKET
View Page 1 View Page 2 View Page 3 View Page 4 Patent Class 200/337 Help	Patent Applied For: 05/06/1912 Patent Approved On: 02/18/1913
We now have an add on part to go with this new type of pull switch that did still did not go over well. It was around this time 1910-1915 that many different companies started coming out with their own versions of pull chain sockets. In fact the patent office even added/changed a category to be used only for pull chain sockets alone. It could be that Hubbell felt that his first invention took so well to the public that a new style would work in the same way, while at the same time separating himself from those that were copying his previous style. He stuck with this new style for almost two years before giving up and going back to his standard older pull chain styles.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1053179	OPERATING MECHANISM FOR PULL SOCKET
View Page 1 View Page 2 View Page 3 View Page 4 Patent Class 200/332 Help	Patent Applied For: 05/06/1912 Patent Approved On: 02/18/1913
We now have yet another add on part to go with this new type of pull switch that did still did not go over well. It was around this time 1910-1915 that many different companies started coming out with their own versions of pull chain sockets. In fact the patent office even added/changed a category to be used only for pull chain sockets alone. It could be that Hubbell felt that his first invention took so well to the public that a new style would work in the same way, while at the same time separating himself from those that were copying his previous style. He stuck with this new style for almost two years before giving up and going back to his standard older pull chain styles.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1064831	PULL SOCKET
View Page 1 View Page 2 View Page 3 Patent Class 200/51.15 Help	Patent Applied For:10/03/1911 Patent Approved On: 06/17/1913
Again as above, several months later the other patents, we have yet another new type of pull switch that did still did not go over well. It was around this time 1910-1915 that many different companies started coming out with their own versions of pull chain sockets. In fact the patent office even added/changed a category to be used only for pull chain sockets alone. It could be that Hubbell felt that his first invention took so well to the public that a new style would work in the same way, while at the same time separating himself from those that were copying his previous style. He stuck with this new style for almost two years before giving up and going back to his standard older pull chain styles.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1064832	PULL SOCKET
View Page 1 View Page 2 View Page 3 Patent Class 200/420 Help	Patent Applied For:10/03/1911 Patent Approved On: 06/17/1913
Again as above, several months later the other patents, we have yet another new type of pull switch that did still did not go over well. It was around this time 1910-1915 that many different companies started coming out with their own versions of pull chain sockets. In fact the patent office even added/changed a category to be used only for pull chain sockets alone. It could be that Hubbell felt that his first invention took so well to the public that a new style would work in the same way, while at the same time separating himself from those that were copying his previous style. He stuck with this new style for almost two years before giving up and going back to his standard older pull chain styles.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1064833	SEPARABLE ATTACHMENT PLUG
View Page 1 View Page 2 View Page 3 View Page 4 Patent Class 439/646 Help	Patent Applied For: 01/02/1912 Patent Approved On: 06/17/1913
Harvey Hubbell: "This invention relates to separable attachment plugs and has for its object to simplify, cheapen, and generally improve their construction and mode of operation."

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1064834	PULL SOCKET
View Page 1 View Page 2 View Page 3 Patent Class 200/51.15 Help	Patent Applied For:05/06/1912 Patent Approved On: 06/17/1913
Again as those shown above, we have yet another one of these new types of pull switch sockets that did still did not go over well. This was the last one before giving up and changing the style back to the popular known Hubbell pull chain sockets.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1107951	INCANDESCENT LAMP SOCKET
View Page 1 View Page 2 View Page 3 Patent Class 439/753 Help	Patent Applied For:05/31/1912 Patent Approved On: 08/18/1914
A Hubbell version of a Wrinkle socket shell.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1121348	ELECTRIC LAMP SOCKET - BRYANT PATENT
View Page 1 View Page 2 View Page 3 Patent Class 439/753 Help	Patent Applied For: 12/12/1913 Patent Approved On: 12/15/1914
Hubbell used this Bryant Patent for their Wrinkle Shell. For more information see the research section at this link.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1107951	INCANDESCENT LAMP SOCKET
View Page 1 View Page 2 View Page 3 Patent Class 439/753 Help	Patent Applied For:05/31/1912 Patent Approved On: 08/18/1914
This looks to be the first version of the Wrinkle socket shell.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1135019	SHADE HOLDER
View Page 1 View Page 2 Patent Class 362/440 Help	Patent Applied For: 04/02/1912 Patent Approved On: 04/13/1915
This shade holder was made to improve the way that they work in that using a clamp shades would be safer and not fall out and break as they did many times with older shade holders.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1135020	SHADE HOLDER
View Page 1 View Page 2 View Page 3 Patent Class 362/440 Help	Patent Applied For:08/23/1912 Patent Approved On: 04/13/1915
Harvey Hubbell: "The present invention has for its object to provide in combination with a screw or cam means for contracting the ring, means for preventing undue movement of the ring in in the support or holder, without affecting its resiliency or interfering with its free contraction and expansion.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1138292	LOCKING LAMP
View Page 1 View Page 2 View Page 3 View Page 4 Patent Class 439/307 Help	Patent Applied For: 02/01/1913 Patent Approved On: 05/04/1915
This device once added to the light bulb would break the conductor if removed. This had to do with theft of bulbs. If anyone steals the bulb, they would not be able to use it. Harvey Hubbell: "More specifically, and in accordance with one feature of the invention, said invention contemplates the provision of a lamp base which may be screwed into an ordinary lamp socket but which can not be unscrewed therefrom without first performing an operation which will destroy the usefulness of the lamp."

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1138293	LOCKING LAMP
View Page 1 View Page 2 View Page 3 View Page 4 View Page 5 View Page 6 Patent Class 439/307 Help	Patent Applied For:04/09/1913 Patent Approved On: 05/04/1915
This device (as the one above) once added to the light bulb would break the conductor if removed. This had to do with theft of bulbs. If anyone steals the bulb, they would not be able to use it. Harvey Hubbell: "More specifically, and in accordance with one feature of the invention, said invention contemplates the provision of a lamp base which may be screwed into an ordinary lamp socket but which can not be unscrewed therefrom without first performing an operation which will destroy the usefulness of the lamp."

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1146938	ATTACHMENT PLUG RECEPTACLE
View Page 1 View Page 2 View Page 3 View Page 4 Patent Class 439/223 Help	Patent Applied For: 07/23/1914 Patent Approved On: 07/20/1915
This was a new adapter that would adapt any of the past attachment plugs to now standard plugs or knife blade plugs of which both had become common use in those days.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1180648	ATTACHMENT PLUG
View Page 1 View Page 2 View Page 3 Patent Class 439/679 Help	Patent Applied For: 03/15/1915 Patent Approved On: 04/25/1916
This was a new plug that could only be plugged in one direction. This was the first Hubbell plug to prevent reverse polarity.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1181451	SWIVEL CORD GRIP FOR ELECTRIC FIXTURES
View Page 1 View Page 2 View Page 3 Patent Class 439/462 Help	Patent Applied For: 09/20/1915 Patent Approved On: 05/02/1916
This was a new plug part that would lock the cord and keep it from twisting.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1229463	ELECTRIC SIGNALING SYSTEM
View Page 1 View Page 2 View Page 3 View Page 4 View Page 5 View Page 6 View Page 7 View Page 8 View Page 9 Patent Class 315/217 Help	Patent Applied For:08/10/1916 Patent Approved On: 06/12/1917
This was a signaling system used for large factories, mercantile houses, etc. which would send a signal being audio or visual or both to a selected department or office.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1229464	PULL SOCKET
View Page 1 View Page 2 View Page 3 View Page 4 Patent Class 200/420 Help	Patent Applied For: 11/29/1916 Patent Approved On: 06/12/1917
This marks the date that we see Hubbell going back to their older styles of sockets again. So in patent no. 1053174 which was applied for on 06/17/1911 until this patent applied for 11/29/1916 we have about five years in which the concept was finally given up on. During this time there is no doubt that the original switches from patent number 994518 from June 6th 1911 as well as others were still being sold to the public. This patent was in relation and/or to improve patents 565541 (1896), 693799 (1902) and 994518 (1911)

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1275691	MEANS FOR LEVELING AND ALINING FACE PLATES
View Page 1 View Page 2 View Page 3 Patent Class 174/58 Help	Patent Applied For: 11/17/1915 Patent Approved On: 08/13/1918
Walls in these days were 'roughly' and 'unevenly' finished. This face plate was designed to mound evenly.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1275693	CONVERTIBLE CAP FOR ATTACHMENT PLUGS
View Page 1 View Page 2 View Page 3 View Page 4 Patent Class 439/173 Help	Patent Applied For: 12/17/1917 Patent Approved On: 08/13/1918
This cap allowed the contact blades to be removed and the positions switched around.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1352604	ELECTRIC SWITCH MECHANISM
View Page 1 View Page 2 View Page 3 View Page 4 Patent Class 200/420 Help	Patent Applied For: 06/17/1919 Patent Approved On: 09/14/1920
This was a new switch that clicks faster and snaps which was designed for ceiling switches.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1409000	MACHINE CONTROLLING TREADLE
View Page 1 View Page 2 View Page 3 View Page 4 View Page 5 View Page 6 View Page 7 View Page 8 Patent Class 74/473.16 Help	Patent Applied For: 09/13/1920 Patent Approved On: 03/07/1922
This is an update to Hubbell's Tap or drill machine from the original patent 576404 on 02/02/1897.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1460246	LOCKING LAMP
View Page 1 View Page 2 View Page 3 View Page 4 View Page 5 View Page 6 Patent Class 439/302 Help	Patent Applied For: 06/18/1921 Patent Approved On: 06/26/1923
This is an update to the locking lamp in which can not be removed from the socket without breaking one of the electrical connections to the filament within the bulb.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1480072	SEPARABLE ATTACHMENT PLUG
View Page 1 View Page 2 View Page 3 Patent Class 439/646 Help	Patent Applied For: 02/16/1921 Patent Approved On: 01/08/1924
Harvey Hubbell: "This invention relates to separable attachment plugs and has for its object to simplify, cheapen, and generally improve their construction and mode of operation." This plug also uses screws and spring plates. Most other plugs of this nature in this era were using rivets which made them hard to repair or work with.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1486896	MEANS FOR ATTACHING FIXTURES TO OUTLETS
View Page 1 View Page 2 View Page 3 View Page 4 View Page 5 Patent Class 174/54 Help	Patent Applied For: 03/01/1921 Patent Approved On: 03/18/1924
In this era two skilled technicians were needed for wiring a house. This invention made it so that when the house was wired, someone with less skill could wire in the electrical device.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1504761	CLASP
View Page 1 View Page 2 View Page 3 View Page 4 Patent Class 24/116A Help	Patent Applied For: 05/31/1923 Patent Approved On: 08/12/1924
Though the patent for this finial was applied for in 1923, there are earlier examples of crimp on acorns predating 1909. However this example that uses the slide in clamp is most common and is is dated post 1922 more info....

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1525134	TAPPING MACHINE
View Page 1 View Page 2 View Page 3 View Page 4 View Page 5 View Page 6 View Page 7 View Page 8 Patent Class 476/26 Help	Patent Applied For: 11/08/1922 Patent Approved On: 02/03/1925
This is an update providing an improved electrical drive and other improvements.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1575992	LOCKING LAMP
View Page 1 View Page 2 View Page 3 View Page 4 View Page 5 View Page 6 Patent Class 313/318.04 Help	Patent Applied For: 03/26/1925 Patent Approved On: 03/09/1926
This is an update to the locking lamp in which can not be removed from the socket without breaking one of the electrical connections to the filament within the bulb. This new version shorts the lamp because of some flaws in the previous versions where the filament was not broken.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1579865	FOUR-DOOR DUPLEX FLUSH RECEPTACLE
View Page 1 View Page 2 View Page 3 View Page 4 Patent Class 439/138 Help	Patent Applied For: 05/15/1920 Patent Approved On: 04/06/1926
This wall plate has spring doors that are open when a device is plugged in and snaps shut when unplugged.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1603255	MEANS FOR ATTACHING FIXTURES TO OUTLETS
View Page 1 View Page 2 View Page 3 View Page 4 Patent Class 439/347 Help	Patent Applied For: 04/09/1921 Patent Approved On: 10/12/1926
In this era two skilled technicians were needed for wiring a house. This invention made it so that when the house was wired, someone with less skill could wire in the electrical device. This new patent updates some features in the old patent 1486896

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1617521	CANOPY SWITCH
View Page 1 View Page 2 View Page 3 View Page 4 View Page 5 Patent Class 200/457 Help	Patent Applied For: 10/29/1924 Patent Approved On: 02/15/1927
Hubbell's first toggle switch.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1645952	CANDLE PULL SOCKET
View Page 1 View Page 2 View Page 3 View Page 4 Patent Class 200/51.01 Help	Patent Applied For: 05/09/1923 Patent Approved On: 10/18/1927
It took almost five years for this patent to become approved. Because of this, you will find many of these pull sockets with either no patent date at all or simply a pat appl for mark on the bottom of the frame of the socket. The socket uses the acorn patent 1504761 with a smaller size chain and acorn finial.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1685361	CAP AND SHELL FASTENING - HARVEY HUBBELL JR.
View Page 1 View Page 2 View Page 3 View Page 4 View Page 5 Patent Class 439/753 Help	Patent Applied For: 05/07/1927 Patent Approved On: 09/25/1928
This year also ended Harvey Hubbell's patents. He died on December 17, 1927. His son succeeded him as President of Harvey Hubbell, INC. Harvey Hubbell III was 26 years old at this time and had already spent years working in his fathers business. Though his father had not passed on for about seven more months, this was Harvey Hubbell Jr's first patent.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1686813	SOCKET SHELL
View Page 1 View Page 2 View Page 3 View Page 4 Patent Class 439/753 Help	Patent Applied For: 09/29/1923 Patent Approved On: 10/09/1928
Do not confuse this wrinkle shell with the one that is so common today. See the Hubbell research page for more information about the Wrinkle shell see this section. This patent took over five years to become approved while the shell had been in use and sold to the public during this time.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1736285	INDICATING PULL SOCKET
View Page 1 View Page 2 View Page 3 View Page 4 View Page 5 Patent Class 200/51.15 Help	Patent Applied For: 09/21/1926 Patent Approved On: 11/19/1929
This is the most common pull switch that we see today.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1771636	CAP AND SHELL FASTENING - HARVEY HUBBELL JR.
View Page 1 View Page 2 View Page 3 View Page 4 Patent Class 439/753 Help	Patent Applied For: 05/28/1929 Patent Approved On: 07/29/1930
This is a patent for a shell and cap that Harvey Hubbell Jr. did almost two years after his father passed away. We believe that this shell was in prototype years before this because of us having an early hammered down version of the shell base. It could be that Harvey Hubbell Jr. was re visiting some of his own previous ideas that never got off the ground, or maybe some of his fathers notes. It does not appear that this shell was produced in any volume during this era. If you have this shell example, we would like to purchase it from you.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
1774014	CAP AND SHELL FASTENING - HARVEY HUBBELL JR.
View Page 1 View Page 2 View Page 3 View Page 4 Patent Class 439/753 Help	Patent Applied For: 03/15/1928 Patent Approved On: 08/26/1930
This is almost the same patent as above with only a few minor differences to the shell cap. If you have this shell example, we would like to purchase it from you.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
2051857	ELECTRIC PULL SOCKET - HARVEY HUBBELL JR.
View Page 1 View Page 2 View Page 3 View Page 4 Patent Class 200/51.15 Help	Patent Applied For: 07/17/1930 Patent Approved On: 08/25/1936
First Hubbell Bakelite Switch This is a new style of pull socket that Harvey Hubbell Jr. came out with. This switch did get some use and can still be found commonly. Through the many years of Hubbell's history, there were more of the older switches made then these. This is the reason that these Bakelite switches do not come up for sale as often and may even seem to be more rare.

Patent No. / Links	Patent Title / Date / Notes	Patent Picture
2116518	REINFORCING JACKET FOR SOCKET SHELLS - HARVEY HUBBELL JR.
View Page 1 View Page 2 View Page 3 Patent Class 200/303 Help	Patent Applied For: 06/10/1935 Patent Approved On: 05/10/1938
What a great idea. This invention would have gone far if Harvey Hubbell would have thought of it back in the days when pull chain sockets were in every day use. People were looking for this solution and this would have solved their problem easily. This goes to show how Harvey Hubbell Jr. had his fathers mind and heart in this business. If you have this shell jacket, we would like to purchase it from you.

EPILOG

After this point in patents, Harvey Hubbell Jr. goes on coming up with some truly great electrical inventions!
His father would have been proud to see him following in his footsteps and becoming such a great inventor.
With the many patents that came after this point, we could go on forever adding to this section.
However we must keep on topic and stick with the antique sockets that this site is all about.

If you find any pre-1925 patents missing from this section, please report the patent number, item and date of the patent to us.
We will promptly add it to this section.

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