US1770724A - Lamp - Google Patents

Description

July 15, 1930. F BAMFORD 1,770,724

LAMP

Filed sept, 4. 192s Z4 INVENTOR Patented July` 15, 1930 UNITED STATES PATENT OFFICE FRANK L. BAMFOBD, F DETROIT, MICHIGAN, ASSIGNOR TO C. M. HALL LAMP COM- PANY, OF DETROIT, MICHIGAN, A; CORPORATION 0F MICHIGAN LAMP l Application led September 4, 1928. Serial No. 303,780.

This invention relates to lamps .and has particular reference lto a vehicle lamp.

Anobject of this invention is to provide means for anchoring an electrical conductor I directly to the reflector of a lamp and for forming an electrical connection between the electrical conductor and the lamp bulb carried by the reflector.

A further object o f this invention isI to simplify the connection lbetween 'the electrivcal conductor and the lamp bulb of the lamp and to produce a simple and `efficient structure which may be economically manufactured o n a commercial scale.

Other objects and advantages of this invention will become more apparent as the following description proceeds, particularly when reference is had to `the accompanying drawings wherein:

2o Figure 1 is an elevational view, partly in section, of a vehicle lamp showing the invention applied to the same. v

Figure 2 is a fragmentary perspective view of a portion of the reflector shown in Fig- 2,5 ure 1.` l Figure 3 1s a-perspective v1ewof the con conductor for supplying electric current to the lamp bulb 13; As illustrated, the casing lO-wmay be provided with an opening 14 through which the conductor 12 is adapted to enter the casing.

. The reflector 11 is provided substantially centrally with'an opening 20 and this opening is surrounded by a rearwardly extending fla-nge designated generally by the refer ence character 21. The flange 21 serves a double, purpose, being adapted to form a socket for receiving the lamp bulb 13 and being adapted further to form an anchorage the flange l21 is of an uneven contour being provided with the extended portions 22 provided with bayonet slots 23 for receiving the pins 24 carried by the base of the lamp bulb 13. Adjacent the ends of the bayonet slots 23 the reflector 11 is provided with the cutaway 4portions 25 to permit the passage through the opening 20 of the pins 24 thus permitting alocking of the pins'24 in the bayonet slots 23.' In addition to the extended portions 22, the flange 21 includes the re1- atively short portions 26 provided with the radially outwardly extending lugs 27 adapted to lock the anchorage clip to the reflector 11 in a manner hereinafter to be described.. As illustrated, the lugs 27 may be formed by stamping out portions of the flange 21 and by bending these portions ,laterally In Figure 3, there is illustrated a clip designated generally by the reference character 30, this clip being-adapted to bc locked to the reflector 11 by the lugs 27. The clip 30 includes an annular portion 31 formed f cf resilient materialland bowed as clearly illustrated in Figures 1 and 4 of the drawing, for' a purpose hereinafter to be more fully described. The internal diameter o f the annular portion 31 of the clip 30 is sufliciently great to permit the clip to be slipped over 'thc flange 21 on the reflector 11 and in order to permit a passage ofthe portion 31. past the lugs 27, there are provided the diametrically opposed cut away portions 32 in the annular portion 31, through which the lugs 27may pass. Thus when the cut away portions 32 are aligned with the lugs 27, the clip 30 may lie-'slipped on the flange 21 to a` osition'betwcen the lugs-27 and the body o the reflector 11 after which the clip 30 maybe rotated to move the cut away portions 32 out ofv alignment with the lugs 27,'so that the lugs 27 will prevent an outward `movement of the clip 30 away from the'reflector 11.

In order to prevent a. rotation of the clip on the flange 21 after the same has been poportion 31 the ears form oppositely directed' cam surfaces 34 over which the lugs 27 will slide relatively easily vto positions between the ears 33; Y n

As illustrated the ears 33 are formed 1n the high portions of the annular portion 31 so that the resiliency of the portion 31 will tend to hold the ears 33 in engagement with the lugs 27. In order therefore to release the lugs 27 from engagement with the ears 33, it is necessary to' slightly flatten the clip 30 by a flexing movement of' the same, whereby the ears 33 will be moved out of the path of travel of the lugs 27 to permit a rotation of the clip 30 to again align the cut away portions 32 with the lu s 27.

For rigidly securing t e conductors 12 to the clip 30, the annular portion 31 of the vclip is provided with the laterally extending lip 35 and the conductor is provided on its end with a metallic terminal 36 adapted to be secured to the lip 35 as at 37. The connection 37 may either be a screw connection orV a rivet and the conductor 12 may be insulated from the lip 35 as by the insulated pads 38 and 39.

For forming an electrical connection between the conductors 12 and the bulb 13, there is provided a contact finger designated generally by the reference character 45. This contact finger comprises the body portion 46adapted to be clamped between the terminal 36 and the insulation 39, whereby the same is electrically connected to the conductor 12. The body portion 46 of the finger 45 is bent upwardly as at 47 and then forwardly as at 48 to provide the extended portion 49 loverlyin the annular portion 31 of the clip 30. he finger 45 is formed of resilient metal whereby the end 49 will be resiliently held in contact with the contact 50 of the bulb 13 wheny the latteris locked in the socket by engagement ofthe pins 24V-in the bayonet slots 23.

From the above it is believed that the manner in which the structure embodying the inventive idea functions, will be readily apparent. The conductor 12 is adapted to be secured to the clip 30 by virtue of the connection 37 which may be either a rivet or a small bolt. The conductor 12 will thus be electrically connected to the contact finger 45 and will be insulated from the annular portion 31 of the clip 30. The clip 30 may be f positioned on the flange 21 and in back off' the lugs 27 by first aligning the cut away (iii orton 32 of the clip with the lugs 27 and y thenvmoving the clip 30 inwardly to the tative movement to disengage the lugs 27 from the ears 33 and to then align'the lugs V27 with the cut away vportions 32. The eX- tension 49 of the Contact finger 45 overlying the opening 20 will be in a position to engage the contact 50 on the bulb 13 and the resiliency of the finger 45 will tend to hold its extension 49 in engagement with the Contact 50. Thus the conductor 12 will be firmly locked to the reflector 11, while an electrical connection will be formed between the conductor 12 and the lamp bulb 13.

lVhile one form of the inventive idea has been disclosed with considerable detail, it is to be clearly understood that the description is forthe purposes of illustration only.

The right is therefore reserved to make such changes in the details of construction and arrangement of parts as will fall within the purview of the. attached claims.

lVhat I claim as my invention is: v 1. In a vehicle lamp,'a reflector having a rearwardly extending flange, a clip sleeved upon the flange for anchoring an electrical conductorto said reflector, and means p'ro- Jecting laterally vfrom the flange for holding the clip thereon.

2. In avehicle lamp, a reflector having an opening, a flange formed on said reflector around said opening, said flange forming a socket for receiving a lamp bulb, and a clip for anchoring an electrical conductor to said reflector, said clip being adapted for detachable locking engagement with said yflange. 3. In a Vehicle lamp, a reflector having 4a socket for receiving a lamp bulb, and a clip for anchoring an electrical conductor to said socket, said clip comprising an annular memadapted to be locked thereto.

4. In a vehicle lamp, a reflector having an` opening and a flange surrounding said opening, said flange forming a socket for receiving a lamp bulb, radially outwardly extending lugs formed onsaid flange, and a clip for anchoring an electrical conductor to said socket, said clip including an annular member adapted to be locked under said lugs.

5. In a vehicle lamp,` a reflector having an opening and a flange surrounding saidk open ing, said flange forming a socket for receiving a lamp bulb, radially outwardly extending lugs formed on said flange, and a clip for anchoring an electrical conductor to` said socket, said clip including an annular member adapted to be locked under said lugs, said annular memberhaving cut away portions When the clip 30 is inv for receiving said lugs whereby 'said annular membermay be positioned under said lugs.`

6. In a vehicle lamp, a reflector having a fiange forming a socket for receivm a lamp bulb, radially outwardly extending ugs carried by said flange, and a clip for anchoring an electrical conductor to saidlange, said clip comprising an annular member having 'cut away portions for receiving said lugs whereb said annular member may be positione on said fiange beyond said lugs, said clip being adapted tov be rotated on said ian e to move said cut away portions out fiange. l Y v7. In a vehicle lamp, a reector `having a flange' forming a socket for receivin a lamp bulb, radially outwardly extending ugs carried by said iange, and a clip for anchoring an electrical conductor to said flange, said clip comprising an annular member having cut away portions for receiving said lugs whereby said annular member may be positioned on said flange beyond said lugs, said clip 'being' adapted to be rotated on said flange to move said cut away portions o ut of alignment with said lugs, and means for locking said clip against rotation on' said flange, said lmeans including ears struck from said annular member for engagement with lsaid lugs.

8.`1In-a vehicle lamp, a reflector having a` flange forming a socket -for receivin a lamp bulb, radially outwardly extending u s car-y ried by said flange, and a clip for anc o'ring an electrical conductor to said flange, said clip comprising an annular .member having cut away portions for receiving said lugs whereby said annular member may be posi tioned on said flan e beyond said lugs, said clipbeing adapte to be rotated on said Bange to move said cut away portions out of alignment with said lugs, and emeans for locking said clip against rotation on said flange, said means including ears struck from said annular member for engagement with said lugs, said annular member being resilient and being bowed whereby the same may be iiexed to move said ears out of engagement with said lugs.

9. In a vehicle lamp, a reflector having a socket for receiving a lamp bulb, and means for detachably securing an electrical conductor to said socket and for forming'an electrical connection between the conductor and lamp bulb, said means comprising a clip sleeved on said socket, said clip and socket having portions adapted for interlocking engagement u on a predetermined rotative movement oi said clip on said socket.

10.' In a vehicle lamp, a reflector having a socket for receiving a lamp bulb, and nieansfor detachably securing an electrical conductor tosaid socket and for forming an electrical connection between theconducton and lamp bulb, said means includin a clip detachably engageable with said soc et and a resilient contact finger arranged diametrically of said clipfor engagement with thelamp bulb.

11. In a vehicle lamp, the combination with a lamp socket for receiving a lamp bulb, and` an electrical conductor, of a clip fixed to said conductor and detachably connected to said lamp socket for anchoring said conductor to said lamp socket and for forming an electrical connection between the electrical conductor and the lamp bulb.

12. In a vehicle lamp, a lamp socket, a lug formed on the outer periphery of said socket, and a clip adapted for locking engagement with said lug for anchoring an electrical conductor to said socket.

13. In a vehicle lamp, a lamp socket, lugsformed on the outer periphery of said socket, and a resilient clip surrounding said socket and adapted to be sprung under said lugs for anchoring an electricalconductor to said socket. y f

14. In avehicle lamp, a reiector'having ,an opening for receiving a portion of a lamp bulb and provided about the opening with a flange that forms a socket for receiving the portion aforesaid `of the bulb, that forms a seat for an electrical conductor attaching clip,

and that has means cooperating with the re- 1G. 'In a vehicle lamp, a reflector having an opening for receivinga portion of a lamp bulb-and provided about the opening withr means for anchoring the bulb in the opening' and .having other means for* anchoring an electrical terminal attaching clip upon the 're- Hector adjacent the opening. y

17. In a vehicle lamp, a reflector having an opening for'receiving a portion of a lamp bulb and provided about the openingwithy means'for embracing the portion aforesaid ofl the bulb, said means being provided with means for anchoring the portion oi the bulb inthe opening.

. 18. Ip a vehicle lampgfa reflector having a flange forming a socket for a portion of a lamp bulb, an electrical terminal attaching..

clip in the form of a ring sleeved upon the flange, and a lug'projecting from the fiange holding the ring thereon. y

19. In a vehicle lamp, a reflector, and an Aelectrica-l conductor attaching clip having a iso ring portion detachabl'y connected to the reiector, and a spring Contact arm having a bulb engaging portion disposed substantially parallel to the ring portion at approximately the center thereof.

In testimony whereof I affix my signature.

FRANK L. BAMFORD.

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