US1272517A - Lamp. - Google Patents

Description

L. L. PFEIFER.

LAMP.

APPLICATION FILED DEC-8. 1916.

1 ,272,5 1 '7 Patented July 16,1918.

c the lens ring locked in such abutting relation. .connection, it is another object of my inven- 1 come more apparent after a further detailed a of Ohio, havev invented LAMP.

To all 'wlwm u may concern Be it known that I, LEO L. PFEIFER, a citizen'ofthe United States, residing at C0- lumbus, in the county of Franklin and State certain new and use ful Improvements in Lamps,-of which the following is a specification.

This'invention relates to lamps for use primarily as'headlights for motor vehicles. Specifically, my invention relates to the relative cooperation between the lamp'body, its reflector and the lens ring, whereby these three are securely held in their assembled position. In this connection, it is my object to so arrange'the parts that dust and moisture will also be excluded as nearly as is physically possible from coming into contact with the polished surface of the reflector. A further object of my invention resides in the structure and arrangement whereby and reflector are resiliently In this tion to also resiliently lock the lens ring in connection with the lamp body, this being preferably efiected by a partial turn of the ring after it has been properly applied to the lamp body.

Other obje ts of the invention will bedescription of the accompanying sheet of drawings in which similar characters of reference designate corresponding parts, and in which: 7

Figure 1 shows a familiar form of auto mobile headlight in side elevation.

Fig. 2 is an enlarged cross section taken on line 2-2 of Fig. 1, and also represented line 2-'2 of Fig. 6.

Fig. 3 is a section taken on line 3 of Fig. 2.

Fig. 4. is a cross section taken on line 1 of Fig.2, but shows the locking spring in side elevation.

Fig. 5 is a similar View represented by line 5 of Fig. 2, and

Fig. 6 is a cross section taken approximately on line 6-6 of Fig.3.

In the drawings, the lamp1 body or casing portion is represented. by t ere erence numeral 1. As shown in Fig. 2, the outer edge of the body 1v terminates in a cylindrical portion 2, to which the angular member 3 is securely fastened so that one leg thereof forms an inwardly projecting shoulder 4.. Within this lamp body there is located a v Specification of Letters Patent.

Patented July 16, 1918.

1 Application filed December 8, 1916. Serial 1 10. 135,883.

conventional type of parabolic reflector 5,

which reflector is provided with a laterally projecting flange 6 at its outer edge and this flange is designed to rest upon the shoulder leg l so that when assembled, the reflector 1s immovable inwardly of the casing.

The flange 6 of the reflector is also pro vided with an annular groove or channel 7 in which a packing strip packing strip is arranged to cooperate with the inner or bottom wall 9- of the lens ring 10 in such manner that all air and moisture is excluded from'the reflector polished surface. As shown in Fig. so shaped to overlie the cylindrical portion 2 of the lamp body, as is shown at 11 and is also shaped to receive the lens 12, this lens being held in position by tongues 13 punched out of a portion of the.ring and turned over, as is shown particularly clear in Figs. 2 and 3; As shown inFig. 2, the lens ring is preferably made of two metallic strips, an imperforate outer strip which forms the trim and an inner strip which latter is provided with a plurality of slots 14. These slots agree in number with the number of spring hooks 15 each formed from a single section of spring material 16. This spring material is sheared as is shown and one corner'thereof is then bent up to hook shape and its extreme outer end turned up, as shown at 17. Each of these spring strips I the shoulder leg 4 and each shoulder leg is provided with a plurality of slots 18 through which the hook Also, the laterally projecting flange of each reflector is provided with a plurality of slots 19 large enough to pass over each of the hook springs.

When it is assuming the hook springs to havebeen properly attached to the shoulder leg 4, the reflector is placed in such position that its slots 19 pass over thd hook springs and this reflector is then given a partial turn, which brings its latera ly projecting flange under the ends 17 of the hook portions 15. In this springs 15 and this lens ring is then given 8 is located. This.

2, this lens ring is portion passes.

desired to assemble the parts,

focal alinement is rigid 1 secured to the underside of 4 ends 17. As shown in Fig. 6, the ends of each of the slots 14 of the lens ring are provided with a humped portion 20 so designed to cooperate with the bent portions 17 of each of the hook springs, so that any addition to the tension exerted by the spring, that is, to parts 17 and 20, cooperate to resiliently lock the. lens ring in its proper position. It will be noted from an inspection of the figures that the flange on the reflector and the bottom Wall of the lens ring are of such Width that the slots 19 and 14 respectively do not interfere with the packing strip 8. Therefore, by this arrangement, there is provided an annular packing strip and this strip is compressed by the influence of the springs upon the inner side of the bottom wall of the lens ring.

It will, therefore, appear that I have provided a structure wherein the lens ring and reflector are resiliently pressed together to exclude dirt and moisture and also that the lens ring and lamp body are resiliently locked together. In addition to this, the reflector is positively mounted in its position within the lamp body, inasmuch as it is incapable of inward movement.

What I claim, is:

1. In a headlight, a lamp body, a reflector therein, a. laterally projecting flange on said reflector, means carried by said body on which said flange directly. rests to prevent inward movement ofsaid reflector, a lens ring provided with an inner annular flat portion adapted to rest on said' flange, and spring means carriedby the lampfor resili-' ently holding said flat portion and said flange together when said ring is in locked position on said body.

- 2. In aheadlight, lamp body, a reflector therein, a laterally pro ecting flange on sald reflector, means carried by said body on which said fl-ange directly rests to prevent inward movement of said reflector,-a lens ring provided with an inner annular flat portion adapted to rest on said flange, and a plurality of springs carried by said'body and projecting into the interior of saidring to resiliently press said flat portion into engagement with said flange when said ring is in locked position on said body.

3. In a headlight, a lamp body, an inwardly projecting flange on said body, a plurality of hook-shaped springs carried by said flange, a reflector within said body resting directly on said flange and having its inward movement thereby arrested, and'a lens ring provided with an inner or bottom wall having a plurality of slots through which said hook springs are adapted to pass and which serve to resiliently lock said'ring on said body when the ring is given a partial turn.

4. In a headlight, a lamp body, an inwardly projecting flange on Said body, a plurality of hook-shaped springs carried'by said flange, a reflector within said body, a laterally projecting flange on said reflector arranged to rest directly in physical engagement with said first-named flange and formed with a series of slots to fit over said springs, said reflector being held in position by a partial turn to bring its flange under said springs, and a. lens ring provided with an inner or bottom wall having a plurality of slots through which said hooksprings-are adapted to pass and which serve to resiliently lock said ring on said body when the ring is given a partial turn.

5. In a lamp, a body member having an inwardly projecting flange formed adjacent to the open end thereof, a plurality of hook shaped springs carried by said-flange and disposed in substantially the same plane as the latter, a reflector within said body, a laterally extending flange on the reflector and arranged to rest directly in physical en-' gagement With said first mentioned flange and formed with a series of slots to receive said springs, and a lens ring including an inner lens strip having spring receiving slots formed therein and adapted to be constructed in alinement with the slots in the reflector flange, whereby upon the partial rotation of said reflector and ring said springs Will engage the inner wall of said, strip to retain said reflector and ring in secured relation with said body member.

In testimony whereof I aflix my signature in presence of two Witnesses.

LEO L. PFEIFER.

Witnesses:

WALTER E. L. BooK, A. L. PHELPs.

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