US117089A

US117089A - Improvement in reflectors for locomotive head-lights

Info

Publication number: US117089A
Authority: US
Publication date: 1871-07-18
Anticipated expiration: 1888-07-18

Description

UNITED STATES PATENT l OEEICE.

CHARLES S. LEE AND WILLIAM M. BALDVIN, OF TROY, NEW YORK.

IMPROVEMENT IN REFLECTORS FOR LOCOMOTIVE HEAD-LIGHTS.

Specification forming part of Letters Patent No. 117,089, dated July 18, 1871.

To all 'whom it may concern:

Be it known' that we, CHARLES S. LEE and WILLIAM M. BALDWIN, of Troy, in the county of Rensselaer and State of New York, have invented a new and useful Improvement in Beectors for Locomotive Head-Lights and other purposes of ilhunination 5 and we do hereby declare that the following is a full, clear, and eX- act description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawing forming part of this specication.

Figure lis a side sectional elevation of our improvement through the line x w in Fig. 2. Fig. 2 is a front or plan view of the same.

Similar letters of reference indicate corresponding parts..

Our invention relates generally to locomotive head-lights, but particularly to the reflecting-surfaces by which the light is intensified. The object in-all such cases is to emit as many rays as possible in a direction parallel to the axis of said reiiector and at a short distance therefrom. I/Ve have approximated much more nearly than usual to a perfect attainment of this object by an im.- proved combination of reiiectors, as hereinafter fully described and subsequently specified in the claim.

In the drawing, A represents one of our imv proved locomotive head-light retlectors, supported on a stand, B, as shown. The walls or retlect- Y ing-surfaces d c are made and arranged in reference to each other, as shown in Fig. 1, so that the rays rom the lamp, which is to be of the 0rdinary kind, its flame placed at F, will strike against the reflectingsurface d and be reflected to the surface c, thence outward horizontally to the light, being thus reflected twice. Referring to Fig. 1, it will be observed that the rays of light a b strike, respectively, at *l *2 on the reliectingsurface d, are reiiected thence to *i* *4 011 the reiiecting-surface c, thence outward on the line a/ b', the rays being thus twice reiiected. Within the reiiector A is a secondary and smaller relector, C, open at its back, as shown, and secured to the reiiector A by rods D. The rays c fall upon the interior surface of the reiiector C at *5 and pass out on the lines c', as shown.

By the use of these improvements we produce a locomotive head-light having greatly-increased intensity and brilliancy. Our improvements may be adapted to various purposes of illumination.

Ve do not limit or confine ourselves to thel form of any of the parts herein shown and described, as they may be varied without departing from our invention.

Having thus described our invention, we claim as new and desire to secure by Letters Patent- In combination with an outer reiiector, A, that receives and reiiects once or twice, according' to their Obliquity, all the rays on one side of the lamp, the inner reiiector C, which allows the horizontal rays onthe other side to pass therethrough, but also reflects the oblique ones horizontally into the same pencil of rays, as and for the purpose specified.

CHARLES S. LEE. WILLIAM M. BALDWIN.

Witnesses WM. A. NUMAN, E. WoosTER.