US1426859A

US1426859A - A cobpobatioh

Info

Publication number: US1426859A
Authority: US
Publication date: 1922-08-22
Anticipated expiration: 1939-08-22

Description

C. E. GODLEY. FOCUSING DEVICE FOR HEADLIGHTS.

Patented Aug. 22,- 1922.

APPLICAHON FILED JAN.10,192I- i t I I I NV EN TOR.

A TTORNE Y.

UNITED STATES CHARLES E. GODLEY, 0F DETROIT,

PATENT OFFICE.

MICHIGAN, ASSIGNOR 'I'O EDMUNDS & JONES FOCUSING DEVICE FOR HEADLIGI'ITS.

Specification of Letters Patent. Patented Aug; 22 1922.

Application filed January 10, 1921. Serial N0. 436,098.

To all whom it may concern:

Be it known that I, CHARLES E. GoDLnY, a citizen of the United States, and residing at Detroit, in the county of Wayne and State of Michigan, have invented a new and 'Improved Focusing Device for Headlights, of which the following is a specification.

This. invention relates to the supporting devices for light bulbs used in headlights and other lamps provided with reflectors, and its object is to provide a device of this character which may be adjusted both longitudinally and transversely of the axis of the reflector.

This invention consists in the details of construction illustrated in the accompanying drawing and particularly pointed out in the claims.

In the drawing, Fig. 1 is a longitudinal central section of a headlight provided with one form of myimproved focusing device. Fig. 2 is a similar section of a modified form of mounting for a focusing device of the same character. Fig. 3 is a section on the line 3-3 of Fig. 2.

Similar reference characters refer to like parts throughout the several views.

In Fig. 1 I have shown a cup-shaped lamp body 1 having a flattened rear end2 provided with a central aperture 3. The reflector 4 within the body has a central aperture 5 and a connector sleeve 6 extends through these apertures and is of so much less diameter than the apertures that it can move laterally in any direction. This connector sleeve is of any desired construction, the sleeve shown by the Knauif Patent No. 1,059,617, dated April 22, 1913, being a good example of what may be used.

The base 7 of the light bulb 8 may be mounted in the forward end of the connector sleeve, while the plug 9 may be secured in the rear end. A plate 10 having a flange 11 fits against the outside of the apertured part 2 of-the body, while a second flat plate 13 fits on the inside thereof. These plates are connected by means of screws 14 (preferably two) which pass through holes (not shown) in the part 2 of sufiicient size to permit as much lateral movement to these screws as the aperture 3 permits the connector 6.

Mounted in these plates is a short tube 15 in which is slidable the connector sleeve 6. A screw 16 is mounted in the plates 10 and 13 and engage in a threaded hole in a small bracket 17 attached to the sleeve 6. A sprlng 18 1s mounted on the screw and holds the connector sleeve forward. v

The sleeve 6 and the light bulb-may be moved longitudinally in or parallel to the axis of the reflector 4: by means of the screw 16. But it is necessary sometimes to move the light bulb transversely to the axis of the reflector, either to bring the active portion 17 into such axis, as when the light bulb is incorrectly made and a concentrated ray is des1red, or to carry this active portion away from the axis, as when diffused light is desired. In such case the screws 14: are slackened and the flange 11 of the plate 10 is firmly pressed in the direction it is desired to move the lamp bulb. When the lamp bulb has been properly positioned the screws 14: are screwed down to lock the parts in position.

In Figs. 2 and 3 I have shown the body 1 formed with a spherical end 2 having an aperture 3*. A spherical plate 10 has a flange 11 and fits the outside of this spherical end 2 while another spherical plate 13 fits the inside thereof. A tube 15 has a circumferentia-l rib 21 which serves as an abutment for the plate 13= and the rear end of the tube 15 is threaded to receive the plate 10, which, when'screwed down, grips the metal around the aperture 3*. This tube 15 may be of any desired length.

Slidable in this tube is a connector sleeve 6 which supports the light bulb 8 and the plug 9. The middle of the. aperture 5 in the reflector 4; is the center of curvature of the end 2? of the body 1*. The light bulb may be shifted in any direction by unscrewing the plate 10 and shifting it laterally in the opposite direction from that in which the bulb is tobe moved. A- screw 16 is mounted in the plates 1O and 13 and in the bracket 17 on the connector sleeve and on this screw is a spring 18 to hold the connector sleeve forward. The forward end of the screw may be split and expanded after the parts are assembled to prevent the bracket from being removed from the screw.

The outer plate 10 is provided with a circular slot 22, indicated in Fig. 3, to permit the plate to be turned relative to this screw when the connector sleeve is to be shifted. After being shifted, the plate is tightened down again. The spring 18 not only holds the tube 6 forward but it also prevents the several parts from rattling.

The several details of construction and their proportions may all be changed by thoseskilled in the art without departing as set forth I other on the inside thereof, a tube connecting said plates and being in threaded en-. gagernent with one of'thern, a connectorsleeve slidablein the tube, a screw carriedvby'the plates to slide the connectorsleeve -longitudinally, means on the sleeve with-which the screw engages, and a springto holcl, the screw and sleeve forward.

p 2; In a headlight, abody-havin'g-a spherical portion and an. aperture therein, a pair of platesin slida-ble engagement with said spherical portion, "a tube connectingthe bracket on the sleeve withwhich the screw engages, anda; spring on the screw to hold the sleeve and screw forward.

3. In a headlight, a body having; a spherical portion and an aperturetherein, a pair of plates in slidabler engagement with said spherical portion, a tube connecting the plates, a connector sleeve slidable in; the;

tube, a v screw mounted in; said plates, a

bracket. on the sleeve with which the screw: engages, and a spring onthe screw: tohold;

the sleeveand screw-forward, one oifsaid plates having "ascrew-thread engagement,

with the tube andhaving a circular slot through which; the screw extends r-to permit rotary movement relative. to theconneoto y v sleeve.

oHARLEs sooner.-