US1575327A - Headlight - Google Patents

Description

1,575,327 F. s. GARFORD Er AL March 2 1926.

- HEADLIGHT Patented Mar. `2, 1926. A

UNITED STATES FRANCIS SYDNEY GARFORD AND JOI-IN WESLEY CAUDWELL, 0F IJOGEED, ALBERTA,

1,575,321 PATENT" oFFlcE.

CANADA.

HEADLIGHT.

Application illed May 2,

To all whom t may concern.'

Be it known that we, FRANCIS SYDNEY GAnFoRD and JOHN WESLEY CAUDWELL, both subjects of the King of Great Britain, and both residing in Lougheed, in the Province of Alberta, Canada, have invented certain new and useful Improvements in Head-` lights, of which the following is a specification.4

Our invention relates to improvements in the art of illumination, and although we have specifically termed our invention as improvements in headlights, this is merely for illustrative purposes and must not be construed as limiting the application of the principle of our invention to any particular field. Obviously our invention can be used to locate landing aviation fields at night time, and in various other locations, such as headlights on locomotives, and for the illumination of areas where heavy traffic occurs at night time, whether on water or on land.

The principal object of the invention is to supersede the method now common of lighting any given area, or flashing al signal, by means of light rays reflected from bright or highly polished surfaces directly into the line of vision, by light rays reflected from any suitable non-glazed, polished, or otherwise mirror-like surface, and without the use of didusing lenses. Another object of our invention, particularly in its application to the headlights of automobiles,` is to faintly illuminate the portion of the car directly behind the headlights, and thereby assist the vision of the occupants of an approaching automobile, and in the following specification we shall describe several disclosures within our invention, and what we claim as new will be set forth in the claim forming part of this specification.- 4

Fig. 1 is a vertical central longitudinal section through our preferred form of light projector. Fig. 2 is a vertical central longitudinal section through a modified form of -our light projector: in this case the reflector is not apertured, and it is protected by a metal housing. The source of light is located within the light projector. Fig. 3 is a view similar to Fig. 2, except that the metal housing is centrally apertured, and is provided with a wire screen to cover said aperture, as well as a cupola which the reflector is provided with in this disclosure. Fig. 4 is a vertical central longitudinal sec- 1924. seriaI No. 710,512.

tion through a further modification showing a metal reflector in the form of a frustum, the smaller end of which is apertured and closed by aconical-shaped translucent member.v F ig.'5 is a View similar to Fig. 4 with the addition of a metal housing 9 for the reflector, and Fig. 6 is a vertical longitudinal section through a still further form of our light projector showing the same adapted particularly for over-head lighting. l

In the drawings, like characters of reference refer to the same parts.

Several distinct advantages flow from ou invention, and one of these is that since the .light rays are not reflected from a surface character of the reflector used is, such that the co-action therewith of the source of light used, and the reflector in front of said source of light, of suitable size, is such that the illuminated surface of said suitable reflector will not be capable of reflecting light rays in` such manner as to impair human vision.

`A is any suitable metal reflector the inner surface B of which is fiat white or its equivalent. This metal reflector is associated at its outer edge with a frame C, which frame supports a transparent closure member D. This closure member may be made of glass or crystal, or of celluloid, or any equivalent material. The central portion of the reflector A is provided with an opening E, and lclosing this opening is a translucent member F, suitably associated with the metal reflector. The rays of light pass through the translucent member F, and where this embodiment of our invention is used as a headlight for an automobile, this faint illuminaltion will assist the vision of the occupants versely of the mouth of the various forms of relectors, thus supportingthe lamps so as to utilize a much greater area of the refleeting surface of the reflector.

Located to intercept thelight rays from the lamp H forwardly2 -is a. reflector. This reflector may be assoclated with the lamp 2, spaced apart therefrom. The transparentv closure member D houses the lamp and its bracket and reflector J within the reflector A. It will be observed that the lamp bracket I passes through the housing 2 and reilector A. The reflector A may have a flat white reilectingsurface, or it may be y of flat white translucent material.

- In the yembodiment shown in Fig. 3 we have speciiically the same combination as shown in Fig. 2 except that the metal housing '3 is centrally apertured as shown at E', and over this aperture is placed a housing in the form of a wire screen 4.' By means of the spacing device 5 carried by said wire -Screen,'this screen is spaced apart from the cupola 6 of the translucent White reflector A. The lamp and its small reflector are located directly'in front of the cupola 6.

In Figs. 4 and 5 we shovsrv metal reflectors 7 in the forni of a frustum, and the reflecting surface of these reflectors is .at white or its equivalent. The rear end of each reflector 7 is closed by a conical-shaped translucent member 8, which diffuses rays of light passing therethrough. A y

vT he form shown in Fig.` 5 is provided with a metal housing 9.

In Fig. 6 we s how an embodiment of our invention for over-head lighting. '.A is a translucent white reflector carried by any suitable frame l()` adapted to be coupled to a support. The mouth of thls reflector is not closed, and the lamp is located in the correct position by an extension 1'1 of the frame 10.

It must of course be understood that the lamps when substantially positioned as disclosed in the drawings will be properly focused.

The reflector J or its equivalent is lso lof cated in respect of its associated lamp I-I that it is impossible to see the filament of the lamp from any angle.

What we claim is: y

In combination a metal reflector centrally provided at its inner end with an opening; a transparent closure member at the forward end of said'relector provided centrally with an opening therethrough; an electric lamp located in -front of said last-mentioned central opening; a bracket for said lam extending transversely of the mouth o said reflector, an invertedreilector supported by said bracket and in 'front of saidv electric lamp, and a translucentmember associated with the opening in the back of said metal reflector.

FRANCISSYDNEY GARFORD.: y. -JOHN WESLEY CAUDWELL;

Images