US540572A

US540572A - Headlight

Info

Publication number: US540572A
Authority: US
Publication date: 1895-06-04
Anticipated expiration: 1912-06-04

Description

(No Model.)

G. W. BAUMHOFF. HEADLIGHT.

No. 549,572. g Patented gun@ 4, 1895.

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- ENCE@ PATENT GEORGE W. BAUMHOFF, OF ST. -LOUIS, MISSOURI.

HEADLIGHT.

SPECIFICATION forming part of Letters Patent No. 540,572, dated J' une 4, 1895.

l Application ined August 20.1894. serial N0.520.749. (Nomade.)

T0 all whom, it may concern,.-

Beit known that I, GEORGE W. BAUMHOFF, of the city of St. Louis,'in the State'of Mis-` souri, have invented a certain new and useful Improvement in Headlights, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to a headlight, intended more especially for use upon street cars, and adapted for the use of incandescent lamps, as a lighting medium; and my invention consists in features of noveltyhereinafter fully describedand pointed outfin the claims.

Figure I is a front elevation of the headlight. Fig. 1I is an end elevation showing the headlightvsecured to the roof of a car. Fig. III is a vertical transverse section taken on line IIL-III, Fig. I. Figs. IV and V are,

roof of the car by bolts 4 passing through thel roof and through a washer 5, said hangers being provided with vertical and horizontal passage-ways 22L and 3' providing concealed conduits for the insertion of electrical wires 6.

7 represents the box of the headlight, provided with a reiiector 8 projecting forward to a point at itsl central portion, and 9 is a glass door connected to the box by hinges 10, and held closed by suitable fastenings 11.

12 represents incandescent lamps, whose sockets 13 have contact connection with the electrical wires 6.

On the lower end of the hanger 2 is a hollow fixed lateral projection or journal 14, formed with a screw threaded end 14a and fitting over this projection is a sleeve 15, provided with a Yiiange 16, having suitable fastenings 16a and between which and a nut 17 on the screw threaded end one end of the box 7 is held. The sleeve 15 is mounted to turn loosely on the hollow projection 14, thus allto hold the cylinder v20 from turning;

and in the'lange 19 are depressions 23, with which the projection 22 is adapted to engage v On the cylinder 20 is an'inner flange 24, to which one end of the box 7 is riveted or bolted. j (See Fig. Il.) Tapped into the projection or journal 18 is a short screw threaded tube 12L which Vreceives the socket of a lamp. Located around the. projection 18 in the cylinder 20, and bearing against the flange at its outer end and against a nut 25, on the end of the projection 18,-is acoil spring 26.

The box of the headlight being held, as described, whe'n it is desired to turn the box, to throw the light in the opposite direction, the cylinder 2O is pressed inward with the box, thus disengaging the projection 22 from the depression 23, and allowing the cylinder to be turned until it reaches another depression to stop its movement, and as the cylinder is turned, the box is turned with it, the opposite end of the box oering no resistance, as the sleeve 15 isalways loose on the projection 14.

One of myimproved headlights is designed to be located at each end. of the car, under the roof which overhangs the platform, and the arrangement is such that the forward Vheadlight is turned to project the rays ahead of the car, while the rear headlight is turned/ to Villuminate the back platform and the rear of the car. Then if, at the end of the line, the 'car' is turned end for end, the headlights can be quickly revolved or-turned on their bearings,.so as to cause the headlight, which will then be in front of the car, to be turned outward, and the other'to be turned inward.

The object in forming the reflector 8 with the forward projecting portion at the central portion of its length is to provide a construction in which the entire reflector surface is utilized, which it would not be were the rei Hector formed straight from end to end.

I claim as my inventionl. The combination of the hangers, adapted to be secured to the root1 of a Streetcar, provided with fixed lateral extensions forming journal-henrings, and the lamp-box provided at one end with a tianged sleeve and at the other end with a fianged cylinder, and a spring located in the flanged cylinder the hangers and their extensions being formed hollow to permit of the passage of the wires and thelampbox being mounted upon the extensions so that it can be turned without twisting the vires; substantially as described.

2. The combination of the hangers adapted to be secured to the roof of a street-car, plo vided with fixed lateral extensions forming journal-bearings, the lamp-box provided at one end with afianged sleeve and atthe other end with a flanged cylinder, the short tubes tapped into the extensions and the nuts located on the extensions forsecuring the lampbox, the hangers and their extensions being formed hollow to permit of the passage of the wires therethrough and through the short tubes and lche lamp-box being mounted upon the extensions so that it can be turned without twisting the wires; substantially as described.

A headlight comprising hangers formed with lateral extensions and passage-ways 'for the wires extending through the hangers and through their extensions, a sleeve provided with a flange and mounted on one extension, a flange located on the other extension, a spring around the flanged extension, cylinder' formed with inner and outer flanges and surrounding the spring, means for detachably connecting the outer tlange of the cylinder with the extension-flange adjacent thereto, a lamp-box secured to the flange ot the sleeve and to the inner .flange of the cylinder, and nuts for limiting the movement ot' the box endwise; substantially vas described.

4. The combination of thehangers adapted to be secured to the roof of a st1-eetca1,provided with lateral extensions and forming journal-bearings, a sleeve provided with a flange and mounted on one of the extensions, a flange located on the other extension, a spring surrounding the flanged extension, a cylinder formed with an inner flange, and an outer flange having a projection engaging depressions in the extension-flange, adjacent thereto, a lamp-box secu red to the flange of. the sleeve and to the inner flange of the cylinder and nuts for limiting the movement of the lamp box endwisc; substantially as described.

GEORGE W. 'BAUMIIOFFX In presence of- ;no. XV. TAUssIG, E. S. KNIGHT.