US1643790A

US1643790A - Electric-lamp socket

Info

Publication number: US1643790A
Application number: US679051A
Authority: US
Inventors: Harold E Slade
Original assignee: Beaver Machine & Tool Co
Current assignee: Beaver Machine & Tool Co; Beaver Machine & Tool Company Inc
Priority date: 1923-12-07
Filing date: 1923-12-07
Publication date: 1927-09-27
Anticipated expiration: 1944-09-27

Description

- 1,643,790 Sept 27,1927 H E SLADE ELECTRIC LAMP SOCKET 'Filed Dec. v, 192s Mmmmlm l INVENTOR kwa/ZZ ,/dfle ATTO NE-YS y the manufacture 25 connected to the Patented Sept. 27, v1927.

UNITED STAT lasv PATENT oFFIcE.

HAROLD E. SLAEE, OF NEWARK, NEW JERSEY, ASSGNOR T0 BEAVER MACHINE &; TOOL COMPANY, INC., 0F NEWARK, NEW JERSEY, A CORPORATION 0F NEW JERSEY.

ELECTRIC-LAMP SOCKET.

Application filed December This invention relates to an electric lamp socket and more particularly to the keyless type of electric lamp socket. Heretofore, lso far as I am aware, it has been customary in of keyless 'electric lampA sockets to connect the screw thread terminal and inmany structuresalso the center terminal to the base of the lamp socket by screws or bolts which pass into or lon- 10 gitudinally through the base of the socket. The -parts of the socket involved in this construction are attached to the base with more or less difficulty as well as being unnecessarily numerous. One` of the objects of my invention, therefore, is to overcome this difculty by simplifying the construction as well as the manner of assembling and connecting the partsl byaproviding a screw socket terminal adaptedin part at least to spana-portion of the socket base and to be connected thereto by a member passing transversely through (che fbase.; The construction is. also such that one of the line terminals .and the center contact are also base by a memberntransf. vversely assoclated with the base. In the construction of heretofore manufactured, various means have been employed for attaching the 4cap to the shell so as to be readily removable therefrom and to prevent the base andvparts t associated therewith from turning relativel ly to the shell and its cap. The present invention also includes a simplified structure for accomplishing this purpose whichI structure includes suitable apertures provided in the peripheral portion of the cap adapted to be engaged by bosses provided for this purpose on the 4o shell together with a notch in the edge of the shell adapted to receive a lug on the casing to prevent a relative turning movement be- `tween these parts, the said notch beingcontinued in the shell in the form of a centrally'- disposed slot of sufficient extent to provide the required resiliency in the end of the shell for compressing the same in separating the captherefrom. Thesel and other features of my improved keyless socket will 1 5o. be hereinafter more particularly described.

Y In the drawing.

Fig. 1 vis an elevation of my improved part each adapted to vings 12 tosecure Also as illustrated the cap may be y keyless lamp sockets, asl

peripheral portion of the* 7, 1923. Serial N0. 679,051.

keyless' electric lamp socket 'illustrating a of the cover or cap broken away to show the formation of the notch and slot in theshell. r Fig. 2 is an 'elevation of the base and parts associated therewith.

3 is an enlarged central longitudinal section.

` Fig. L is a plan ofthe socket with the cap removed, and

F ig. 5 is an inverted-plan with the shell removed. 4 lReferring' to the made in accordance with this inventionk includes the usual shell 10 and the cap member 11 adapted to fit over one` end ofthe shell to be connected thereto. As illustrated, the cap 11 is providedv with a series of spaced apertures 12 which are preferably semi-circular andthe peripheral portion of the shell at one end thereof a corresponding number of bosses13; each' is -provided with .x

of which is preferably 'semi-spherical and 4made of any suitable materialforthe purposes intended. The shell is adapted to receive a baseand the electrical conducting members associated therewith as hereinafter described` and at the cap end of the shell l-a notch 17 isi provided in the periphery thereof to 'receive alug, 'as hereinafter described, on the base member to prevent the relative rotation of these parts. The peripheral portion of the shell is cut away in a substantially rectangular configuration to provide the notch 17. At theinner end of the notch the same includes recesses 18 eX- tending circumferentially of the shell and the notch also includes a centrally disposed preferably gitudinally of 'the shell a vsuiiicient` distance to make they adjacent portions of the Ashell resilient enough to be compressed to readily eeot the removal of the cap when this is necessary or desirable, it .being understood V-shaped slot 19 extending lon i 65 drawings, the socket that when the parts are in position the pe-v ripheral portion of the cap is vprevented fromparticipating in this resilient action throughfthe lug on the base, as hereinafter described. Furthermore the edge portionsv of the'shell atl the notchedend thereof'are inturned to provide ears indicated at and 21 and the corresponding portions of the insulating. lining with ears ,22 and 23 for engagihg the sides of the lug on' the base. w

The base of the lamp socketis indicated at`24 and as'isl customary this is made of porcelain or. anyother similar and equally good insulatingmaterial. The base isfitvted with a screw' socket terminal 25 adapted to receive the screw terminal ofalamp bulb and provided with oppositely disposed longitudinally extending lugs 26 and 27 adaptked respectively to` be received in and to lie which is' indicated at 30 and'is fitte'dwithY transversely through' a bore provided for.

' openingv in the lead wire terminal .against the bases of the recesses or grooves 28 and 29.l provided therefor inopposite positions-in the base 24. TheA socket is also provided with lead wire terminals,.one 0f va binding screw 31 adaptedt engagea lead wire to secure the same in position against the terminal 30. Also as illustrated fthe-terminal .30 lies in the recess 29 and is 'e provided with a boss 'adapted to be' received '27. Av tie-bolt 33 passes through an openin an vopeninglprovided therefor in the lug ing providedther'efor in the lug 26, passes this purpose in the base 24 .and Vat its opposite end is4 threaded to engage artapped 30 to secure these-partstogether.

, v-Thecentral Contact of the socket is indi-' cated at 34.'l This ismade integral with a lead wire terminal 35. which passes through an opening- 36 provided in the wallsof the screw socket 'contacty25 for this purpose so"l that the -central'contact 34may assume a central position. relatively tol the screw lsocket contact'andthe base.y The other end ofthe lead wire terminal 35 lies in a recess 37 provided in .the sideof the base 'for this purpose, the1 recess. 37 being separated from terminal. This lead wire-terminal 35 isl secured .in position, being connected to the base 24 by av tie-bolt 41, .the head of whichliesin a recess '42 while the shank extends through a transversel bore provided in the'- base'24 for this purpose .in order to permit -the' screw nthreadedy end'vof the tie-bolt to engage a-.tapped'opening in the lead wire 4terminal by which engagemend' as will be understood,y the'leadfwire terminal ismaintained in position.

' A 'sclearly seen lin-Fig.. 5 thescrew socket contact 25 is -provided with an inturned end portion 43vadapted to lie against the inner end of the base 24 and is notched to engage the sides of a lug 44 projecting from the inner end of the base 'in order, to assist in lmantaining the relative positions of these parts and for the t'same purpose'on the opposite side the screw socket contact 25 is provided with 'an' in'turned end 45, the edges of which are adapted to engage alug 46 at distant from the notch 17, thebase 24 is provided with a rib 47. in the upper or outer end of which thereisa lug 48 adapted to extend through and" to lie within the notch 17 to prevent'a rotary shifting of the .base and its associated parts relatively to the shell. The vperipheral portions of the base 24 adjacent'the rib '27. are' preferably flattened faces as indicated at 49' and, 50

for' the purpose of providing said rib and;

,effecting an economy in the `use of the material from whichthe base is made. Similarly lo nl the opposite side of the base there is a -rib 51 which, however; is not provided with acorresponding lug, but-on either side of. which the base has flattened faces 52 and 53., while adjacent theflattened face 53 there is a flattened face 54 along'w-hichthe longitudinall portion of. the vlead wire terminal 35 extends y y -Fromthe foregoing description it will be understood that the number ofpartsof the `socket is reduced' to a'minimum and .the

facility with which the parts may be assembled is increased by making it possiblev to pass the tie-bolt transversely through the base to secure the terminal and contact members in position,while the shell and base are maintained in their relative `places and the lshell is lmade sufhciently resilient to permit of the ready removal lof the .cap by-beinfr.

'. depressible on either side ofthe lug which,

when the' parts are in place, maintains the peripheralportion of the cap in position by I Claim asI my invention: 1. In an ,electric lampl socket, an

provided" therefor onthe said base, a lead to enter arecess 'provided ltherefor in vone iof the said lugs, land. a unitary means passpreventing vthe samel fromy being depressed.l a

insulat- 4 ing base', a lamp terminal screw contact havlng lugs extending therefrom adapted to eny vgage substantially oppositely Adisposed faces 126 `wireterminal having a bossv thereon adapted I ing through the safid'base transversely, and

engaging-one of the said lugs to secure the said lamp terminal 'screw contact to said base, and/also engaging the said lead-wire terminal to secure the same andthe other of the. said lugs to thesaid base.'`

2.v In an electric' lamp socket,. an2 insulatbase, and also engaging the terminal to secure the same and the other of ing base, a lamp terminal screw contact having lugs extending therefrom adapted to engage substantially oppositely` disposed faces provided therefor on the said base, a

lead wire terminal having a boss thereon.

l the said lugs tofthe said base, a lamp termil gaging the said extension to fix the for on the said base,

nal center contact Ahaving an extension adapted tovlie against a face provided thereand means also passing transversely through the said base for en'- ing base', `ing lugs extending therefrom adapted to ensame and the said lamp terminal 'center' contact thereto. y

3. In an electric lamp socket, an insulata lamp terminal screw contact havgage substantially oppositely disposed faces provided therefor on the said base, a lead wire terminal adapted to contact with one of the said lugs of the lamp terminal screw contact, and a unitary means passing .through said base transversely and engaging oneof the lugs to secure the said lamp terminal screw contact to said base and also engaging the` same lead wire terminal to secure ,the same and the other of the said lugs to the said base.

Signed by me this 20th day'of Sept., 1923. HAROLD E. SLADE.