US1250745A - Headlight. - Google Patents

Description

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OVERTON WINSTON, OF MINNEAPOLIS, MINNESOTA.

H'EAnLiGH'rL To all whom t may concern:

Be it known that I, OVERTON Wngs'roN, a citizen ofthe United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements 1n Headlights; and Ido hereby declare the followthe pivot that is locatedabove the axis of the reflector, but in the present application,

the said socket is mounted on the pivot that is located below the axis of the reflector. lhether the best results can be obtained by placing the pivot above or below the axis of the reflector, depends somewhat on the nature of the lamp and on the form of the reilector. With the pivot below the axis ofthe reflector, when the lamp is moved upward by oscillatory movement of the socket, it will be given arf accelerated rearward movement, and when such arrangement is used in connection with a parabolic reflector, it is a fact that the light beams, at a predetermined pointrin front of the headlight will be widened when the lamp is moved above ithe axis of the reflector and at the same time, is given a rearward or receding movement toward the back of the reflector.

The invention is illustrated in the single view which is aI vertical section taken centrally through the headlight, some parts being shown in full.

Referring to the drawing: A

The numeral 1 indicates the casing of an ,ordinary headlight, Such as used on auto-v mobiles, and the numerals 2 and 3, indicate, respectively, the reflector and a glass'plate or lens of the head light.

The electric light bulb '4 is detachably mounted in a lamp supporting socket 5 which, so far as this present invention is concerned, may take various forms, but may be assumed to be of the type disclosed in my co-pending application above identified.

l"Specification of `Letters fatcntl The axis of the'i'eflector is indicated at 1/.

The lamp socket 5 isiconnected by' pivots- 16 to a hollow supporting head 17 thatv hasfa threaded shank screwed into the hub of an annular anchoring plate 18 rigidly secured on the'back of the reflector 2 and surrounds an axial passage 2L thereof. The front end of the socket 5 projects through the passage 2a and works with freedom for vertical movements therein.

For oscillating the lamp socket vertically, I provide upper and lower electro-magnets 19, both of which are rigidly secured to and carried by horizontally projecting upper and lower plates 20 of theL hollow bearing head 17.

At their inner extremities, the electromagnets are provided with pole pieces 19n and at their outer extremities with polev pieces 19?. The pole pieces 19rt act upon and limit the oscillatory movements of the rear end of the lamp socket 5, which latterl is of iron o steel and serves as an armature.

Small upper and lower lock levers 22 ar intermediately pivoted to the upper and lower plates 20 and provided at their inner end with lock -heads 23, the outer ends of the levers 22 are yieldingly pressed by a light coiled spring 24 shown as anchored to .the plates 20. The outer ends of said levers 22 serve as armatures that are adapted to be retracted by the outer pole pieces 19b of the respective electro-magnets. The circuit connections for the electro-magnets are not shown, but they are preferably independent ofthe lamp circuit and so arranged that l Patented Dec.v 1S, 1917. Appneatinn ined Aprile, i916. serial'NmasAse.

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either electro-magnet may be energized, at

cated by dotted lines in the drawing, thehot spot of the bulb filament will be at, or

approximately at the axis of the reflector,

and at the focal center thereof, and that when the lamp socket is in the tilted position indicated by -full lines in the drawing, the

lamp bulb will be raised and retracted so that its filament will then be not only above the axis o f the reector but at a point considerably rearward of a vertical line drawn through the focal center at the reflector.

This accelerated rearward movement offthe lomp is, of course, due to the location of the pivotal su port of the socket below the axis of the i-e. ector, and the movementl of the lamp above the axis of the refector. @therwise and more broadly stated, the bulb movement is on one side of the axis of the re- Hectol and the pivotal support of the socket' is on the other side of the said axis.

What I claim is:

In a headlight, the'combination with a reector, of a lamp support and am electric light bulb held thereby within said reflector, seid lamp support being mounted to freely swing in a vertical plane on a, fulcrum lo- 15 .to a position above theaxis of said reflector, 20

and conversely.

In testimony whereof l aiix my signature in presence oiV two wltnesses.

OVERTON wiNsToN. iVitnesses BERNICE G. WHEELER, HARRY D. Kimono.

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