US1737995A - Headlight - Google Patents

Description

Dec. 3, 1929. H. L. COOKE 1,737,995

HEADLIGHT Filed Nov. 16, 1925 2 Sheets-Sheet l I Q I g 4 I? 73 q 59 75 3 .MWM

FTTOF/VEXS Dec. 3, 1929. H. L. COOKE 1,737,995

HEADLIGHT Filed Nov. 16. 1925 2 Sheets-Sheet 2 MPLW FTTOF/VE'YS Patented Dec. 3', i929 \INITE nnnnwann LESTER GOOKE, or rnrnon'ron, new. annsnir, Assrenon ro COOKE rar- ENTS INCORPORATED, OF NEW YORK, N. Y., A CORFORATION OF DELAWARE nnannrenr Application filed. November My present invention has to do with headlights of the type used on vehicles, and has special reference to the provision of an improved casing or container for a type of electric light bulb which l have devised and which is the subject of one or more pending applications; However, it -will be understood 7 ring and band being broken away;

Figure 8 is a side elevational view corresponding to Fig. 1, but not in section;

Figure 6t is a view of the left end of Fig. 1 showing the arrangement of the parts and tlie means for securing the lens or glass in ace p F ig ureb is a view in front of the bulb showing an alternative means foradjustably holding the bulb socket;

Figure 6 is a view corresponding to Fig but in longitudinal section;

Figure 7 shows still another means for adjustably holding the bulb socket;

Figure 8 shows a ball and socket arrangement similar to Fig. 7., but having an alterna tive means for accomplishing the adjustment of same; and t Figure 9 shows a further means-of adjustably hclding'the lamp socket.

Referring now to Fig. 1, 10 denotes an open ended centrally enlarged casing having secured therein a lamp socket 11 by means of a bracket 12 passing around same and secured to the casing by means of rivets 1313.

Casin 10 has means for receivin the usual' plug 14, (shown in Fig. 3) establishing an electrical connection withthe lamp, such means comprising an electrical conductor 15 insulated from the bracket by insulation not shown, and establishing connection between the internal conductor of plug 14: and that of the neck of the electric light bulb. For one 16, 1925. Serial No. 69,238.

end of casing 10 ll preferably provide a cover 17 which may be detachably secured to casing 10 by means of ears 18 stamped out of the flange 19; of said cover and engaging bayonet slots 18 in the end of the casing 10.

At the front end of casing 10 ll provide means for detachablysecuring in place a glass or lens 20 which advantageously may be provided with vertical striations 21 to give the desired horizontal spreading of the light rays. Such means preferably comprises an annular retaining member 22 having a flange 22 similar to flange 19 to cover member 17, and provided with ears23 which engage bayonet slots 24 in a similar manner to cover member 17., In order to prevent the lens 20 from slipping back into the casing I may provide stop 3 members 25, preferably three in number and symmetrically disposed, stamped out of the casing, while for preventing rotation of the lens l have also provided a finger 26, likewise stamped out of the casing, and engaging a small slot 27 in the lens 20. For afiording a spring connection between the lens and the cover member I have equipped the retaining member 22 with stamped out fingers 28 which bear upon the lens 20 with a spring action and thus serve to hold same firmly against the stops and in a manner which efiectively insures against loosening and rattling of the lens.

For securing lamp casing 10-to the vehicle ll preferably provide a strap member 30 passing around the body of the casing 10v and. having meansfor attachment to a standard 32 on the vehicle, such means preferably COH1- prising a flange 33 engaging a reduced portion 34: of the standard 32. Preferably for' thepurpose of preventing rotation of the casing with respect to the strap I provide a stud 35 on standard 32, said stud being engaged by slot 36 in the casing. The structure thus far described will suffice to prevent rotation of the casing with respect to the strap;

,in order, however, that ll may insure against the casing being unintentionally removed from .thestandardeither by accident or theft, 1 provided the stud 35 with a nut 37, or make 'saidstud 35 in the form of'a rivet. Strap member 30, which is of resilient material, may

be secured to the casing conveniently, by means of a locking arrangement consisting of a toggle member 39, engaging bearings on one end of the strap and a bearing 41 on said other end. It will be evident when the toggle member 39 is brought toward the casing, past its dead center, that the ends of the strap will be securely bound to the casing, assuming the strap to be of the proper length. The centrally enlarged portion of the casing, or at least the bearing portion thereof, is preferably of the shape of a sector of a sphere, this shape permitting the casing to have limited universal movement within the strap, as the parts constitute in effect a ball andsocket. Such movement however is resisted by the pressure of the strap against the casing whereby the relation of the parts cannot easily be disturbed once adjustment has been made.

The. above described casing is adapted to receive a bulb 43 of my invention in which a reflecting surface 44 is provided, which in effect is integral with the support for the filament thereby insuring that the reflecting surface will not be moved, either by jarring or otherwise, with respect to the filament placed at its focal center. A shield 44* is disposed in front of the filament to cut off the direct rays and preferably to reflect them to the main reflecting surface. As will be evident, thebase of the filament is disposed opposite the reflecting surface, the region in the front centerof the bulb being occupied by a the neck .and socket 11, and the bracket 12.

It will be seen that several important advantages are had by thus mounting the bulb' socket at the front instead of at the rear of the bulb. In the first place the filament shield 44, the filament support and the interior portion of the neck of the bulb may be made integral. Secondly, by having the portion of the bulb bearing'the reflecting surface free from attachment to the neck, the obtainment of an accurate reflecting surface is facilitated. Thirdly, an area in front of the bulb is utilized which is otherwise not of thedirect rays is eliminated.

In Figures 5 to 9 I showadditional means for ad usting the position of the bulb bearing bracket whcreby'the direction of the light beam maybe varied. In Figures 5 and 6, the

bracket member has an up and down movement by virtue of a lunged joint denoted v generally by 51, which in turn has a swivel mounting 53 whereby universal movement of the bulb socket, is accomplished, the two ad ustmentsbemg made by use of a bolt 52 and a screw- 54; respectively, the latter operat ing to bring together the members of the split bearing (shown best in Fig. 6) comprising 5 the swivel mounting 53. The above arrange- It will further be ment, as well as the modifications described below, has the advantage that adjustment may be accomplished independently of the shows the same type of adjusting arrange- 1 ment as Figure 7, with the difference that a long shanked adjusting bolt with head is provided which may be operated outsideof the casing 10, said shank passing through a slot 61 in the casing. In Figure 9 a bracket 65 hearing the lamp socket is pivoted in an upstanding member 66 which is riveted to the casing 10, said member having a portion 67 serving as a stop for the screw nut 68 in threaded engagement with the bracket 65. It will be seen that by turning the head of the screw 68 that the bracket '65 will be given a limited rotation, thereby affording a vertical adjustment to the bulb. It will be understood that this vertical adjustment is more important than the horizontal adjustment and that the latter may, if desired be dispensed with.

. It will be evident from the'foregoing that I have provided a lamp casing for my improved electric bulb which is simple and practical, and of neat and attractive appearance. Furthermore, my improvedcasing is easily assembled and may be cheaply and '1. In a headlight, an open ended casing, I

means for .detachably holding a glass or lens over one end thereof, a detachable cover for for holding the bulb, means securing said casing to a standard of a vehicle comprising a strap securable to said standard, means for preventing rotation of said casing in said strap, comprising a stud on said standard and a slot in said casing engaging said stud, said slotallowing for adjustment in a longitudinal direction. a

2. In a headlight, an open ended, casing having cylindrical end portions and a middle portion of the approximate shape of a sector of a sphere, means for detachably holding a glass or lens over one end thereof, means for detachably holding a cover over the other end thereof, socket means in said casing for securable to said standard and passing around said middle portion of-said casing,

said other end, socket means in said casing whereby said casing may have universal movement with respect thereto.

3. In a headlight, an open ended casing, means for detachably holding a glass. or lens over one end thereof, a detachable cover for said other end, socket means in said casing for holding the bulb, means securing said casing to a standard of a vehicle comprising a strap securable to said standard, said strap being of springy, resilient material and detachably and resiliently holding said casing and also having a single means locking the ends thereof independent of the means attaching same to the standard whereby said casing may be removed independently of the strap attaching means, and positive means for preventing rotation of said casing in said strap.

In testimony whereof I have aflixed my signature to this specification.

HEREWARD LESTER COOKE.

Images