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Publication numberUS1865347 A
Publication typeGrant
Publication dateJun 28, 1932
Filing dateFeb 5, 1930
Priority dateFeb 5, 1930
Publication numberUS 1865347 A, US 1865347A, US-A-1865347, US1865347 A, US1865347A
InventorsWilliams Thomas Harrison
Original AssigneeWilliams Thomas Harrison
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Lamp socket
US 1865347 A
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Description  (OCR text may contain errors)

June 28, 1932 1-. H. WILLIAMS LAMP SOCKET Filed F' b. 5. 1930 760/2745 //i/z7/z'ams ATTORNEY the button by As will be seen, invention provides Patented June as, 1932 U ITED STATES'PATIEN .1? orncs rnolus mmarson wrnnmusoa cr caao, InnnroIs Lm socnn' Application filed February 5, 1880. Berta! Io. 480,117.

This invention relates to lamp sockets used for lights connected in series, such as Christmas tree lamps, the general object of the invention being to provide means for short- ,circuiting any one of the-lamps when it is desired to test the string of lamps to find out which lamp is dead.

This invention also consists in certain other features of construction and in the combination and arrangement ofthe several parts, to be hereinafter fully described, illustrated in the accompanying drawing and specifically pointed out in the appended claim.

Indescribing the invention in detail, reference will be had to the accompanying drawing wherein like characters denote like 'or corresponding parts throughout the several views, and in which Figure 1 is a sectional viewthrough oneof the sockets.

Figure 2 is a top plan view. Figure 3 is a bottom planview.

In these views, the numeral 1 indicates the: socket which is provided with the usual threaded member 2 to receive the threaded part of a lamp and with the usual central contact 3, this contact 3 being connected with the conductor 4, as shown at 5, and the member 2 being connected with the conductor 6, as Ishown at 7. I l

11 carrying out my invention, p ace a button 8 in an opening formed in the top of each socket, the inner end of the button being fastened to a spring 9 which is fastened by a screw 10 to a part of the member 2, this screw also acting to fasten the conductor 6 with said member 2. The spring is fastened to a screw 11 which is arranged directl above the u per end of the contact 3, so t at when the button is depressed, the

' screw will engage the contact 3 and thus short circuit the lam placed in the socket.

Thus it will be seen that when one or more of a number of lamps in a string or series of lamps is dead, the dead lamp can be easily and uickly found by depressing the buttons e sockets.

means for shortcircuitin' the sockets one at havin a threaded lining for receiving the threa ed part of a lamp, a contact protruded centrally of the lining, atap for a lead connected with the contact, a ta for a lead connected with the lining, and a lautton resiliently projected from the shell body and havin a connection with the last named tap an adapted to be engaged with the contact on i pressing inwardly upon the button for shortcircuiting a. lamp in the socket.


atime,sothatthedead mpcanbeeasily.

whereof I aflix m signature.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2439500 *Dec 16, 1946Apr 13, 1948Richard T WoodBridging switch for testing series light circuits
US2756384 *Nov 21, 1951Jul 24, 1956Indeal Ind IncFluorescent circuit tester
US2976484 *Aug 30, 1957Mar 21, 1961Smith Kline French LabCircuit fuse locator
US4808865 *Oct 8, 1987Feb 28, 1989A.O. Smith CorporationFault detector for electric motor and control
U.S. Classification200/51.11, 315/185.00S, 315/193, 307/157, 324/537, 439/666
International ClassificationF21S4/00
Cooperative ClassificationF21S4/001
European ClassificationF21S4/00E