US2138075A - Lighting unit mounting - Google Patents

Description

Nov. 8- r IA. N. TAYLOR EI' AL 2,

LIGHTING UNIT MOUNTING Filed Feb. 8, 1937 FIGJ INVENTORS ARNOLD N.TAYLOR BY NORBERT nwonosu Aromv EYE Patented Nov. 29, 1938 UNITED STATES LIGHTING UNIT MOUNTING Arnold N. Taylor and Norbert P. Worden, De-

troit, Mich., assignors Detroit, Mich Company, Michigan to C. M. Hall Lamp a corporation of Application February 8, 1937, Serial No. 124,765

3 Claims (01. 240-415) This invention relates generally to lamps for motor vehicles and refers more particularly to that type designed for use as head lamps.

In the past it has been customary to form such lamps with an outer casing of the desired configuration and to mount within the casing as a sub-assembly the essential elements of the lamp such as the reflector, bulb socket and the electrical terminals or connections. The front of the lamp was either a plain glass panel or a lens which was usually secured separately to the lamp casing. However, the development of lamps has progressed to such a point that it is now desirable to use a filament instead of a bulb as the lighting element and to mount within the lamp casing as a hermetically-sealed lighting unit a reflector, filament, lens and electrical terminals or connections. Thus, it has been necessary to redesign the mountings for such elements.

In view of the foregoing, it is an object of the present invention to provide the hermetically-- sealed units with mountings that permit the units to be adjusted so that the beams of lfiht projected therefrom may be properly directed.

Other objects, advantages and novel details of construction of this invention will be inade more apparent as this description proceeds, especially when considered in connection with the accompanying drawing. wherein:

Figure 1 is a fragmentary vertical sectional view through a lamp structure embodying our invention;

Figure 2 is a front elevation thereof.

Referring now to the drawing, A is the lamp casing, B is the hermetically-sealed unit, and C is the mounting embodying our invention for said unit.

In the present instance, the casing A may have any desired contour and may be mounted-in any suitable-manner upon the motor vehicle. Preferably the casing A is open at its forwardend and is provided with a door D. As shown, this door D is sleeved upon an inwardly oflfset annular flange l of the casing A and is provided with an opening 2 that receives the unit B. p

The. hermetically-sealed lighting unit B may be made in any suitable manner and JPIBfIflblY has a shell 3 of heat-resisting glass, known in the trade as Pyrex, provided with front'andrear walls [and 5, respectively, and an annular head 6 at the juncture of said walls. The front wall 4 comprises the lens, while the front face of the rear wall 5 has a coating of suitable material forming a reflector 1. A suitable filament 8 is carried by the rear wall 5 at the center thereof and is provided with suitable electrical terminals 8 for connection with electrical conductors (not shown).

The mounting C for the unit B preferably comprises a pair of cooperating rings In and II, respectively, adjusting screws l2, l3 and I4, supporting lugs I 5 for said screws, one for each I screw, and coil springs l6 sleeved upon the screws,

one on each screw between the lugs l5 and the ring I I. As shown, therings l0 and H embrace the head 6 of the unit B and are connected together at spaced points thereof by suitable screws I'l. Preferably the inner ring ll constitutes the supporting member for the unit B and is. adjustably mounted within the offset annular flange i of the casing. The adjusting screws l2, l3 and M are located between the spaced screws l1 and cooperate with the springs IE to adjust the unit 13 relative to the casing. Preferably the heads I8 of the adjusting screws are between the rings l0 and H and are provided with conventional slots I9 that are accessible through openings 20 in the outer ring Ill. The shanks 2| of the screws threadedly engage nuts 22 carried by the lugs l5 and the latter are rigidly secured to the casing A. Thus, by adjusting the screw l2, the beam of light projected from the unit B may be raised and lowered in a vertical plane; by adjusting the screw l3, the beam 'of light may be tilted to the left; and by adjusting the screw H, the beam of light may be tilted to the right. Whatwe claim as our invention is: t

1. A lamp having a casing provided with an opening, a light unit for projecting light rays through said opening, and an'adjustable connection between said unit and the side walls of, said casing, including lugs fixed to said side walls, cooperating clamping rings gripping said unit, nuts fixed to said lugs, and screws threadedly engaging said nuts and having their heads between and accessible through one of said clamping rings.

2. A lamp having a casing provided with an opening, a light unit for projecting light rays through said opening, and a connection between said unit and easing including a lug fixed to said casing, cooperating members gripping-said unit, a

a nut flxed to said lug, and a screw threadedly engaging said nut and having its head between and accessible through one of said gripping members.

3. A lamp having a casing, a light unit within said casing, and a mounting for said unit including a part fixed to said casing, cooperating mem-

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