US787739A - Signal-light. - Google Patents

Description

PATENTED APR. 18, 1905.

E. A. EDWARDS.

SIGNAL LIGrH'I'.

APPLICATION FILED NOV. 26, 1901.

'2 BHEBTSSHEBT l.

PATBNTED APR. 18, 1905.

E. A. EDWARDS.

SIGNAL LIGHT. v APPLIOATION FILED NOV. 25, 1901.

2 SHBETSBHBBT 2.

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UNITED STATES Patented April 18, 1905.

PATENT OFFICE.

EDGAR A. EDWARDS, OF CINCINNATI, OHIO, ASSIGNOR, BY MESNE AS- SIGNMENTS, TO METROPOLITAN TRUST & SAVINGS BANK, TRUSTEE,

A CORPORATION OF ILLINOIS.

SIGNAL-LIGHT.

SPECIFICATION forming part of Letters Patent No. 787,739, dated April 18, 1905.

Application filed November 25, 1901. Serial No. 33,533-

To all whom, it may concern:

Be it known that I, EDGAR A. EDWARDS, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Signal-Lights, of which the following is a specification.

My invention relates to locomotive-headlights and to the signal-lights thereof, so constructed that a portion-of the light from the lamp is projected upwardly to constitute a signal; and my invention consists in so constructing the parts as to utilize the rays of light passing backward from the lamp, as

[5 fully set forth hereinafter and as illustrated in the accompanying drawings, in which- Figure 1 is a sectional elevation of suificient of a locomotive-headlight to illustrate my invention; and Fig. 2, a sectional plan on the line 2 2, Fig. 1.

A represents. the casing of a locomotiveheadlight of any suitable construction provided with a lamp B, which may be of any suitable character, but as shown an arc lamp 2 5 is illustrated, and C is the usual reflector, of such a character as to reflect the light-rays from the lamp forward through the usual goggle-glass D. p

It has been found desirable not only to pro- 3 ject the light-rays from a locomotive-headlight forward, but also to throw a portion of the same vertically upward, to thereby enable them to be seen at a greater distance than in some cases it would be possible to perceive the horizontal rays, as set forth in Letters Patent granted to S. H. Harrington April 18, 1893, No. 495,938.

In order to avoid the necessity of obscuring in any way the passage of light through the 4 goggle-glass, I arrange a supplemental reflector E at the rear of the lamp and cut away the reflector C, forming an opening as, through which the light-rays passing to the rear of the lamp or a portion of the same may be thrown upon the supplemental reflector E, the latter being so arranged as to reflect said light-rays upward in a more or less vertical direction, as desired.

In order to preserve the parallelism of the reflected rays from the reflector E, the latter 5 is properly curved to a curve approximating a parabolic curve in most instances, and while the supplemental reflector may be stationary I have shown it as connected to a cross-shaft 1, provided with an arm 2, to which is connected a rod 3, which may be operated from any suitable reciprocating portion of the engine-a s, for instance, an arm A, mounted upon an extension of the sliding valve-shaft 5. This arrangement, however, is only indi- 6O cated as one of many possible arrangements which may be employed for securing a vibrat-f' ing action of the reflector, which has been found to be desirable in some cases.

The reflector E may be arranged outside the 5 casing A, or the casing A may be extended, as shown, so as to inclose the reflector E, in which case there is an opening w in the top of the casing for the passage of the rays projected upward from the reflector E, said open- 7 ing being covered by a glass at. This arrangement of tWo reflectors Within a casing having an upper glass-covered opening may be employed with difl'erent arrangements of auxiliary reflector from that shown.

Without limiting myself to the precise construction and arrangement of parts shown or to a headlight arrangement of any specific character, I claim as my invention 1. The combination witha headlight, and its lamp and reflector, of an opening permitting the light-rays to pass to the rear of the reflector, and a supplemental reflector arranged to receive such rays and project them upward, substantially as described.

2. The combination with the casing of a locomotive-headlight, of a lamp, a concave reflector having an opening at the rear of the lamp, and a supplemental reflector at the rear of said opening arranged to reflect upward 9 the light-rays passing through said opening, substantially as described.

3. The combination with the casing of a lo-v comotive-headlight, of a lamp, a concave reflector having an opening at the rear of the lamp, and a supplemental parabolic reflector at the rear of said opening arranged to the supplemental reflector, substantially as 10 With an opening in the top of the casing above described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

EDGAR A. EDWARDS.

Witnesses:

H. M. GILLMAN, J r., W. CLARENCE DUVALL.

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