US1469038A

US1469038A - Lamp socket

Info

Publication number: US1469038A
Application number: US386767A
Authority: US
Inventors: Erikson Leonard
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-06-05
Filing date: 1920-06-05
Publication date: 1923-09-25
Anticipated expiration: 1940-09-25

Description

Sept. 25, 1923. l 1,469,038

L. ERlKsoN LAMP SOCKET Patented Sept. 25, i923a naires stares meeste i erstes.

LEONARD ERIKSON, OF MALDEN, MASSACHUSETTS.

LAMP socxjnr.

Application filed .Tune 5,

and useful Improvement in Lamp Sockets,

of which the following is a specification.

My invention relates to incandescent lamp sockets and more especially in sockets adapted for use in show-case reflectors, and its object, generally speaking, is to improve and simplify the construction of the same in the manner hereinafter set forth. 1

Specifically my object is to provide a twopart socket, the members of which may be clamped together and used for two lamps, or one member of which may be clamped to a base for useV with aV single lamp; to provide simple means fory clamping the members of the socket together; and to provide means for attaching the socket to theV reT flcctor. l

n With these objects in view my invention contemplates. the use of two juxtaposed blocks of insulating material, one or both of which have lamp-receiving chambers at their outer ends, and longitudinally aligned side recesses, a bridge in each side recess and means electrically and mechanically connecting one bridge with one or both of the threaded metallic tubes placed in said chamber or chambers for receiving the lamps, and other means electrically and mechanically connecting the other bridge to one or both of the spring contact members lwhich make contact with the central terminal ofthe lamps, together lwith means, such as an elongated nut in a longitudinally extending recess in one of the socket members and longitudinally disposed screws passing through said members and engaging said nut for clamping the socket members together, and means forsecuring thesocket tothe reflector orother support, such as a flat nut in a laterial recessin one socket member and a screw threaded to said-nut land having its head projecting above the socket.

j My invention will be bestY understood by reference to the drawings ywhich accompany and form av part of this specification in which Y Figure 1 is a vertical longitudinal section of a double socket and show case reflector embodying my invention, said section being taken on the line 1 1 of Fig. 4. lFig. @is an end view. Figs, 33nd 4 are trans- 1920. senti m4386376?.

verseV sections taken on the lines'B-S and 4 4 respectively. Fig.l 5 is a horizontal longitudinal section taken on the line 5 5. Fig. 6 is a vertical Alr'mgitudinal section of a single reflector embodying my invention, the section being taken on the line 6 6. Fig.

7 is an end view of the base end of the socket shown in Fig. 6. Fig. 8 is an end. view of the chambered end of l In the particular drawingsV selected for more fully disclosing the principle of my invention 10 represents the' top member of the reflector which as shown in my application Serial No.`386,768 filed simultaneously the socket shown in herewith is substantially horizontal when in use, 11 is the substantially vertical' side member of said reflector and 12 the downturned end portion' in which the top meinber terminates. A conduit having' its base 13 resting on the reflector and the ends of its side members 14 resting on the reflector is suitablysecured to thelatter, as forexv ample, by screws 14 which pass through the reflector and are threadedto'the base of the conduit in the' manner disclosed in my application aforesaid, although it will be understood that any suitable means may be employed. Vfor this purpose. A saddle 15 having its top portion disposed opposite and parallel to the'base of the conduit andthe ends of its side members resting on the latter so that a space ,is provided for electrical .conductors between said base and saddle, is clamped to the socket by the screw Altthe end of which is threaded to the flat nut 17 in a lateral lrecess vin one of the are connectedy to the ,conductors in said j socket, vas these features Yhave been" claimed in my application above-.referred to.

As shownin Fig. l'myuimproved socket consists of two blocks of

insulating material

30, 31,. the latter]beingmprovjded withan axial recess and the former with a correspondingly shaped projection 32 fitting therein. Theouter ends of each block receive the threadedmetallic tubes 34 and the spring contact members 35, 3G respectivelyr which make contact in the usual manner with the cylindrical surface and the vcentral terminal of an incandescent-lamp plug. For the purpose of mechanically connecting the two blocks as well as electrically connecting the metallic tubes and spring clips respec tively l employ'metallic bridges located in the side recesses and screws which cooperate with the latter and with the respective blocks. The screw 37 passes through the block 30, its head enga-ging the tube 34 and its end being threaded to one end of the bridge 38V in the side recess 39 of the lblock 31, and the screw 40 passes through the block 31, its head engaging the tube 33 and its end being threaded to the other end of the bridge 38. The screw 41 passes through the block 31, its head engaging the spring ycontact member 35 and its end being threaded to one end of the bridge 42 located in the side recess 43 of the block 30, and the screw 44 passes through the block 30, its head engaging the spring contact member 36 and its end being threaded to the other end of the bridge 42.

While the arrangement above described.

joins the two sockets mechanically I prefer to strengthen the structure by means of an elongated n nut 45 in a longitudinally extendingFK recess of the block 31 andthe longitudinally disposed screws 46 and'47 which pass through the lower portions of the

blocks

30 and 31 respectively, the heads of said Y screws engaging the

tubes

34, 33 respectively.

. Conducting

clips

48, 49 are soldered to the

bridges

38, 42 respectively for receiving the

conductors

18, 19 respectively.

InFig. 6 the base 50 is provided with a side recess 51 in alignment with the recess 43 of the block 3() and receives the bridge 38 i the ends of which are threaded to receive

screws

37 and 40 which pass through Vsaid block and said base respectively. In this case the base and block are mechanically Y joined by the bridge 38 and its co-operating screws while the tube 34 is electrically connected to said bridge and the spring contact member 36 is electrically connected to the bridge 42 bythe screw 44 Vas in the case of the double socket shown in Fig. 1. The base and block 30 are clamped together by means of the nut 45 and the

screws

46 and 47.

' It will be apparent that the block 30 shown in Fig. 6 as clamped to a base to form a single socket is identical with the correspondinglynumbered element shown in Fig. 1 as clamped to a similar block for the purpose of lmaking a double socket.

Each block, and also the base 50 is provided witha projection 52 which fits into the slot 53` cut into the base of the conduit member 13 for properly positioning the socket with respect to the latter. The inner1 surfaces ofl said projections are beveled inwardly las shown at 54 to prevent a sharp bend in the conductors as they pass from the conduit to the

clips

48, 49, respectively.

After the conductors have been soldered to their clips the side recesses 39, 43 or 51, 43, as the case may be, are filled with insulating cement. d

It will be understood'that while I have described one illustrative embodiment of my invention with some particularity, various modifications may be *made therein withoutdeparting from the scope of my invention as set forth in the appended claims.

I claim:

1. A show-case-reiector lamp-socket comprising in combination two blocks of insulating material, the juxtaposed inner ends ot said blocks being provided respectively with an axial recess and a correspondingly shaped axial projection .tting into said recess, and with longitudinally extending aligned side recesses, the outer ends of each block having a chamber, a metallic tube for engaging the cylindrical surface of a lamp plug and a contact member for engaging the central terminal thereof in each said chamber, a bridge in each side recess, a screw passing through one block and having its head engaging Vthe metallic tube in the chamber thereof and its end threaded'to the bridge in the side recess of the other block, afs'crew passing through the second block and having its head engaging the metallic tube in the chamber thereof and its end threaded to said bridge, a screw passing through the first block and having its head engagingthe contact member in the chamber thereof and its end threaded to the bridge in the side recess of said block, a screw passing through the second block and having its head engaging the contact member in the chamber thereof and its end threaded to the bridge in the side recess of the first block, and means for clamping said blocks together.

2. A show-case-reflector lamp-socket comprising in combination two blocks of in'sujlating material, the juxtaposed inner ends of said blocks being provided respectively with an axial recess and a correspondingly shaped axial projection fitting .into said recess, and with longitudinally extending aligned side recesses, the outer ends of 'each block having a chamber, a metallic tube for engaging the cylindrical surface of a lamp plug and a contact member for engaging the central terminal thereof in each said chamber, a bridge in each side recess, a screw passing through one block and having its head engaging the metallic tube in the chamber thereof and its end threaded to the bridge in the siderece'ss of the other block, a screw passing thri'igh the second block and having its head engaging the metallic tube inthe chamber thereof and its end threaded to said bridge, a screw passing'through the first 'block and having its head engaging the VvContact member inthe gse chamber thereof and its endthreaded to the bridge in the side recessI of said block, a screw passing through the second block and having its head engaging the contact member in the chamber vthereof and its end threaded to the bridge in the side recess of the first block, an elongated nut in a longitudinally extending recess in one block, and longitudinally disposed screws passing l through said blocks and engaging said nut.

8. A show-ease-reflector lamp-socket comprising in combination two blocks of insulating material, the juxtaposed inner ends of said blocks ybeing provided respectively with an axial recess and a correspondingly shaped axial projection fitting into said recess, and with longitudinally extending aligned side recesses, the outer ends of each block having a chamber, a metallic tube for engaging the cylindrical surface of a lamp plug and a contact member for engaging the central terminal thereof in each said chamber, a bridge in each side recess, a screw passing through one block and having its .head engaging the metallic tube in the chamber thereof and its end threaded to the bridge inthe-side recess i of the other block, a screw passing through the second block and having its head engaging the -metallic tube in the chamber thereof and its end threaded to said bridge,a screw passingthrough the first block and having its head engaging the contact member in the chamber thereof and its end threaded to the bridge in the side recess Aof said block, a screw passing through the -secondblocl and having its head engaging Ythe contact member in the chamber thereof and its end threaded to the bridge in the side recess of v the first block, means for clamping said blocks together, a flat nut in a lateral recess in one block below the side recess thereof,

and a screw passing throughsaid side recess and having its endthreaded to said nut, the

head of said screw projecting above said block for securing the socket to a support.

In testimony whereof, I have hereunto subscribed my'name this 3rd day of June,

LEONARD ERIKSON.