US1151800A - Lamp-socket. - Google Patents

Description

caseras s. ormrmmmn, wisconsin.

Lamp-soenna.

To all 'whom t may concern Be it known that'I, CHARLES J. KLEIN, a citizen of the United States, residing at Milwaukee,'.in the county of Milwaukee and State of Wisconsin, have invented new and useful improvements in Lamp-Sockets, of which 'the followingA is a fuif. clear, concise, and exact description, reference being had to the accompanying drawing, forming a part of this specification;

This invention relates to lamp sockets and similar devices.

This 'application is acontinuation of my c'o-pending application ld Sept. 25, 1911, Serial No. 651,224: as to all the common subject-matter of the two applications.

One of the objects of the invention is to provide a lamp socket comprising few parts which may be cheaply manufactured and readily assembled.

Anotherobject is to provide a lamp socket comprising a molded insulating casing having a snap switch mechanism and a lamp shell inclosed therein.

A further object is to provide improved means for attaching such sockets to fixtures of conventional type.

ln order to more clearly disclose my in` vention have illustrated a preferred embodiment thereof in the accompanying drawing, wherein,

' Figure 1 is a side view of a lamp socket; Fig. 2 is an elevation of one section of the socket with the switch mechanism mounted thereon; Fig'. 3 is an elevation of the other section of the socket; Fig. 4 is a sectional view of the socket at right angles to Fig. 1; Fig. 5 is a bottom view and, Fig, 6 is a perspective view of a socket bushing.v

Referring more particularly to the drawing, the lamp socket shown is of porcelain or other suitable insulating material and is longitudinally and centrally divided into two semi-cylindrical sections 1 and 2. These sections are designed to fit closely together and are suitably recessed to house a switch mechanism and the current-carrying parts of the socket.

The flat faces of the two parts of the socket are provided with recesses 3 at one end, central recesses 4 and additional semicylindrical recesses 5 at its opposite end whereby when the parts are joined these recesses respectively form a conductor entrance, a substantially closed central chamber for the switch mechanism 'and an open I Specification of Lettere Patent.

.Application led January 28, 1914. Serial No. '815,048.

recess at the lower end of the socket to re- Y make or break circuit with a snap actionupon movement in opposite directions. 'I-fhf contacter 7 is pivoted upon a'spindlf-"B Patented Aug. 31,v 1915.

which also supports the operating member? 6L The switch mechanism is mounted upon the section 1 of the casing and.is1prefelcllgly' secured thereto by a supporting to the spindle 8 and dimly-seated in the cenv tral recess 4 by a screw 10 or other suitable,

means. At diagonally pposite sides of the recess 4 a pair of stations contacts 11 and 12 are secured to the casmg by means of suitable screws. A bent terminal lug 13 leads from the contact 11 through a passage 14 to a point adjacent the conductor opening in the casing. Connected tothe other contact 12 and preferably secured to the base by the same screw is a depending contact 15 passing throu h a lrecess 16 and having a. bent extremity 1 'constituting a center contact for the lamp.

A screw shell 18 is designed to snugly t within the open lower recess of thev lam socket and is supported therein on one si e loy means of a transverse ledge 19 of' the casing fitting within a cutaway portion 20 of the shell and on the other side by means of a terminal 21 preferably riveted at its lower end to the shell and leading vertically to a position adjacent the conductor en? trance 3 where it is attached to thecasing by. a screw 22. The two terminals are. prow vided with binding screws which work in suitable recesses in the base. The other part of the socket is provided with recesses 23 and 24 at opposite sides of thec'onductor entrance for receiving the lterminals on the part 1 of the socket. F rom the. recess 23 a channel 28a leads downwardly to the bottom` chamber of vthe socket and receives therein the terminal 21 when the sections are united.' The central recess 4 in this part. of the casing is provided with a well 25 within -whichfitsithe free end the spindle 8 of the switch mechanism., A transverse recess i 'entends across the adjacent faces of the l socketfparts' for accomodating the switch vflange of the screw shell, and also serve to hold the shell against rotary movement.` The twopartsof the socket are preferably secured together by .means of `a screw 30 passing j through registering openings in the base projections 27, 28 above described,A and received in a nut 31. When a lamp is inserted in the socket, andthe switchclosed, circuit may be traced from the terminal 13 across the switch to terminal 17, through the lamp, and by shell 18 and terminal 21 to the return conductor. Y

In order toadapt the socket yfior use with fixtures of the conventional type, I provide a metal bushing 32 within the conductor entrance of the casing. As shown, this bushing comprises an interiorly threaded nozzle 33 having depending tongues-34 and 35 on opposite sides. The tongue 34 is preferably .substantiallyrectangularl and is secured to ,the part 1 of the socket by means of' two "screws passing through a metalv connecting `lHflkB countersunk in a recess on the exte- -irybr ofthe casing'. The `other tongue 35 is.

ieferably arranged to receive' a single crewextending` through the other section j `of the casing. v

i Attachment of the'iocket to .a 4fixture is accomplished readily and without danger to the frangible casingby first attaching the section 1 of the socket which carries the switch parts and thereafter fastening the other. section of the socket thereto. In this manner the opposite tongues 34 and 35 of the bushin `provide stops or fulcrums between whic 4.a screw driver or any suitable i tool .may be inserteglmolgl the bushing strain upon the'casing. The tongue 35 may screwedl uponv the -rfltie nipple without be provided with recesses 37 on its sides so that accidental slippage of the operating tool is prevent@ while the socket is being attached to the'fh'xture.

The socket described is of sturdy and subvstantial construction comprising a` small number f parts which may be very cheaply manufactured. Furthermore, the device may be finished as desired to harmonize with all styles of fixtures. The switch mechanism 1s securely mounted and all conducting parts are thoroughly insulated from each other and from the exterior of the casing. Furthermore, the switch mechanism and din the casing when made. The several interfitting v,projections and recesses of the socket parts, in addition to their constituting effective insulation walls, also serve to" interlock the parts and minimize the strain upon the screw connecting the sections.

What I claim as new and desire to secure by Letters Patent is:

1. A lamp socket comprising7 in combination, a longitudinally divided casing of moldd insulat ion having complementary recesses in the adjacent faces of its parts forming a conductor opening at one end and a lamp receiving recess at the other end and an intermediate substantially closed chamber, snap switch mechanism within said chamber, a conducting shell Within said lamp receiving recess and binding ,posts within said conductor opening, said .mechanism, said shell and said binding posts be-` ing mounted on one part of said casing, and the other part of the casing being detach` ahleto .expose said current carrying elements.

2. In combination, a longitudinallydivided insulating casing having a conductor opening at one end and a central chamber land a lamp-receiving recess at the other end, a switch mechanism .mounted Within said central chamber and having one terminal. extending adjacent said conductor opening and a second terminal extending within said lamp-receiving recess' and constituting a center contact therein, and a threaded conl,ducting shell mounted within said lampreceiving recess and having a terminal extending adjacent said conductor vopening at a 'threaded conducting `shell mounted within. nothetof said recesses, terminals for 5,55% .mechanism and "said conducting snel extending adjacentv a third of said recesses, and means tionstogether.

4. In combination, va longitudinally die.

forsecuring said secvided two-part insulating casing having a 12 conductor opening lat one end and a substantially closed .central chamber and a lamp-receiving recess at the other end, a switch mechanism mounted in said chamber and a conducting shell mounted in said lamp-receiving recess, the parts of said casing havingL complementary projections interfxttin ,suppntln'g the latter and for holding the sameagalnst rotation.

within'recesses in said shell for 5. Inl combinationa longitudinally dil'vided' insulating casing Ahaving complemenmounted within said lamp receiving charnber and ,having'cutaway portions, the sections of said casing having complementary projections interfitting within said cutaway portions of said shell to hold the latter against rotation and to insulate saidcenter contact from said shell. v

G. A longitudinally divided tw0part insulating casing having a conductor open*- ing at one end and ya metallic bushing fixed to one sect-ion of said easing Within said conductor'opening and having a pairof oppositely disposed portions adapted to re- 'ceive an opcating tool: for rotation of the bushing.

7 In combination, a sectional socket easing of molded insulation and a metal bushing carried thereby for attaching the same yto a support,,saidb-ushing,havinglstrain ej i ceivingimen's. for"y enablinglit's rotatie direct exertion thereon, and said casing having. a section detachable to expose said means. y i

8. In combination, a sectional socket eas ing of molded insulation and a strain receiving bushing carried thereby for attaching the same to a support, said casing hav- I ing a section detachable to render said'bushing accessible from the side for man1pula tion. .f

9. In combination, a sectional socket casing of molded insulation, va metal bushing carried thereby for attaching the same to a support, saidbushing having a forked por-p tion to receive an operatingtool, and means for detachably securing one of the sections of said casing to said bushinggesaid section being detachable from the other section to render said forked portion, of said bush ing accessible to 'receive the operating tool.

vISO

In witness whereof, I havehereuntoy suby scribed my name in the presence' of two witnesses.

, CHARLES J. KLEIN.

Witnesses:

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