US996408A

US996408A - Electric-light socket.

Info

Publication number: US996408A
Application number: US60850911A
Authority: US
Inventors: Theodore E Hamby
Original assignee: Individual
Current assignee: Individual
Priority date: 1911-02-14
Filing date: 1911-02-14
Publication date: 1911-06-27
Anticipated expiration: 1928-06-27

Description

To aZl it may concern:

Be it known that I, THEODORE E. HAMBY,

-' a citizen of the United States, residing at 'Rockwood, in the countyof Roane and State of Tennessee, have invented certain new and j useful Improvements I in Electric-Light T Sockets, of which the following is a specification, reference being had therein to the accompanying drawing.

" TlfllS invention relates to electric switches and'has special reference to switches for incandescent lamp sockets.

- 'The invention has for its object to proy jvidean improved electric switch for incandescent lamp sockets so constructed'and arranged that in the operation of the contact "maker there will be no jar such as is ordinarily the case in the snap actionof a switch so that destruction or breaking of. delicate 0r fine filaments will be avoided.

v Thejnventio'n further has for its object in addition tothe above noted features to avoidshockto the filament and to provide a "to which may be applied to contact maker that will operate smoothly without any jar and-thereby increase the life of delicate bulbs and filaments used in ct tain types of'incandescent lamps.

, The invention further has for its object to'provide an improved switch for incandescent lamp sockets of the kindreferred any form of socketto-be used.

Referring'to the accompanying drawings: Figure l is a view in vertical-section ofan incandescent lamp socket provided with a snap switch constructed in accordance with this invention. Fig. 2 is an enlarged detail view in perspective of a portion of the cont-act maker. Fig. 3 is an enlarged detail view of another portion of the contact maker which is employed with the device shown in Fig. 2. Fig. 4 is an enlarged detail view in perspective of a snap switch constructed in accordance with this invention. Fig. 5 is a detail view of a portion of the snap switch .thereto.

3 indicates the filling of the lamp socket to which is secured a metallic strip 4 having.

' ELECTRIC-LIGHT SOCKET.

V Specification of Letters Patent. Pat ent-ed J 1111?; 27, 1911. Application filed February 14, 1911. Serial No. 608,509. I

one end 5 bent down and forming a bearing for one end of the switch shaft 6, which extends through and is supported in the sides curved to fit in the curved sides 10'. iof the piece 9, the ends 12 of the metallic piece '11 being flush with and conforming to the open ends of the recess 10, and forming a continuation; of the curved surface of the piece 9. Each of the pieces 9 and 11 is formed with holes 9 and 11 which are in alinement with each' other, and throughwhich extends the, shaft (3, the piece 11 being formed midway between its ends wit-h a lateral opening 13, extending transversely through the piece Hand in said opening 13 are located projections 14 on the shaft 6.

It will be seen that by means of this con-v struction, more particularly shown in Fig. 6, there will be a lost motion of the shaft 6 in the movement of the projections 14 in the recess 13, and with the contact maker is operated at the end of the throw of the shaft by the engagement of the projections 14 with the upper and lower walls ofthe recess 13. 15 indicates a spring strip having its outer end preferably formed with a transverse head, the middle portion 16 of which is curved to conform to the curvature of the piece 9 and the ends of the metallic piece 11 and having the lateral projections 17 whereby when the projections 14 act upon the piece 11 one end of the latter will drop smoothly into engagement with the curved portion 16 of the end of the spring 15. The spring 15, is mounted in any suitable manner upon the bar 4' and as here shown preferably by having a curved portion 18 fitting snugly into'the curved end 7 of the bar 4,

the end of the spring strip 15 being riveted as at 19 to the bar 4. It will be seen that by this latter connection of the spring15 with the bar 4 a resilient movement will be given to the spring 15 in the operation of the contact maker. i

It will be seen that by'means of this construct-ion, the contact maker will roll ing one end bearing on the, periphery of smoothly on the screw threaded socket 2 and that the action of the spring with the contacts 1 will be very gentle and smooth,

and that the snap actionof the switches of incandescent lamp sockets wherein an oblong contact maker is employed is avoided.

Having described the invention, what I claim is 1. In an incandescent lamp socket of the kind described, a rotary switch shaft, an

' end bearing on the periphery of said oval piece and adapted to contact with said contacts thereon.

2. In an incandescent lamp socket of the kind described, a rotary switch shaft, a piece of insulating material mounted thereon having its periphery formed with bulging sides, and with a transverse recess in said piece, a metallic conducting block mounted in said recess with its ends flush with the periphery of said piece, and a conducting spring having one end bearing on the periphery of said insulating piece, and adapted to contact with the ends of said metallic conducting piece.

3. In an incandescent lamp socket of the kind described, a rotary switch, a circular piece of insulating material slightly oblong in length and mounted on said shaft, said piece having a transverse recess, a metallic conducting piece mounted in said recess with its ends flush with the periphery of said in sulating piece, and a conducting spring havsaid insulating piece, and adapted to contact with the ends of said metallic conducting piece.

In an incandescent lamp socket of the kind described, a rotary switch shaft, a circular piece of insulating material haying an oblong recess, a metallic conducting block located in said recess and having its ends flushwith the periphery of said insulating piece, said piece and block'being mounted on said rotary shaft, and a conducting spring having one end curved and mounted in a support, and its other end bearing against the periphery of said insulating piece, and adapted to contact with the ends of said metallic conducting'block.

5. In an incandescent lamp socket of the kind described, a rotary switch shaft, a slightly oblong curved piece of insulating material having an oblong recess, a metallic conducting block mounted in said recess, said block and piece being'mounted on said rotary shaft, and bearing against one end of the threaded lamp socket, the ends of said metallic conducting block forming contacts and a conducting spring having one end bearing on the periphery of said piece of insulating material and adapted to contact with the ends of said conducting block.

In testimony whereof I'hereunto 'aflix my signature in presence oftwo witnesses.

THEODORE HAMBY. Vitnesses ROBERT H. THoMPsoN, J. N. BAKER.