US 1762388 A
Description (OCR text may contain errors)
June 10, 1930.
E. A. EVERETT LIGHT SIGNAL SUPPORT Filed Aug. 24, 1928 INVENTOR.
Patented June 10, 1930 UNITED STATES EDWARD A. EVERETT, OE LONG ISLAND CITY, NEW YORK LIGHT-SIGNAL SUPPORT Application filed August 24, 1928. Serial N'o. 301,881.
This invention relates to signal lights and has for an object to provide lights of this type adapted for electric lighting by a dctachable reflector and light bulb and a further object of the invention is to provide a light support by a ball and socket connection which is universally adjustable; other objects of the invention will appear from the following specification and the accompanying drawings in which, Fig. 1, is a front elevation of a signal light embodying my invention and Fig. 2 is a sectional view taken on the centre of the source of illumination and on the centre of the ball and socket support.
It is common practice to provide headlights with reflectors supporting an electric bulb on the axial centre of the reflector and so arranged that the bulb and reflector are an integral unit. In the present invention this reflector combination is used, but the reflector is detachable, having a flange on its outer edge engaging a groove in the housing and held on this seat by a spring so that the bulb and reflector are easily removed through the door of the housing.
It is established practice to support lamp housings of this type by a right angle bracket, the vertical portion of which usu ally slides in, a groove of the housing. In order to obtain a universal adjustment for the direction of the beam projected from this lamp, I provide a ball and socket mounting for the housing which is adapted to slide on the vertical arm of the bracket and may be clampedin any position thereon. This signal light may be applied to the existing lamp brackets on semaphore signals thereby securing a universal adjustment in the direction of the projected beam.
In the drawings 11 is the lamp bracket, usually clamped to a semaphore signal, which terminates in the vertical arm 12. This bracket is rectangular in section as indicated in Fig. 2 and has the cleat 13 slidably mounted thereon and clamped in position by the set screw 14. A projection 16 formed integral with the cleat engages the pad 17 of the bracket to act as a stop in the downward movement of the cleat.
The signal light is indicated at 18 with the roundel 19 and with the door 20 openin to the rear to expose the interior, the g ass roundel 21 closes the opposite end of the.
housing. The reflector 22 has an outwardly formed flange at 51 on its outer edge which seats in the groove 52 of the housing. The reflector is formed in two stages of curvature as indicated at 22 and 23 to make the projected light effective over a long range. The reflector is formed in a socket at 25 which receives the insulated bushing 26 supporting the base of the lamp bulb 24 in the axlal line of the reflector. These parts are clamped together by the clamp 25 and the position of the bulb is adjustable relative to the reflector. The terminal block 27 may be used to make the electrical connections to the lamps.
The cleat 13 is formed with a concavoconvex projection terminating in the spherical surface 15 and which engages a corresponding concave spherical surface at 31 formed in the side of the housing. A brass or bronze plate 33 formed to the. spherical contour is placed on the cleat and a corresponding plate 32 is placed against the housing. These plates form the bearing surfaces between the engaging parts and when applied in this way it is not necessary to machine or finish these surfaces and rusting is substantially avoided.
The bolt 38 secures the cleat to the housing and is tightened by thev nut 35 on the inside of the housing. An aperture is formed at 36 in the outside wall of the cleat for entering the head of the bolt which is provided with spherical shoulders at 34 to match the concave spherical surface of the cleat. When in position, it will be noted that the bolt head clears the bracket 12 and a free movement is provided for the bolt in the cleat as the cleat is moved out of parallel relation with the housing.
Ball and socket mountings have been preposed for signal lights but the present invention embodies the novel feature of securing this mounting in a slidable cleat and which is secured to the side of the signal device.
Having thus described my invention, I claim:
In a light signal support, the combination, a lamp bracket comprising a solid rectangular vertical member, a cleat with a rectangular opening sliding on said vertical member and clamped thereto and having on one side a spherical projection with an aperture for a bolt on the axis of the sphere and having an aperture for a bolt head in the outer wall of the cleat opposite said spherical projection, a housing having a spherical depression on its side matching the spherical projection of said cleat, said cleat being secured to said housing by a bolt passing through said apertures with the head located in the depression formed within the spherical projection of the cleat and prevent-- ed from falling out of said cleat by said vertical member.
In testimony whereof I afiix my signa- EDWARD A. EVERETT.