US1870194A

US1870194A - Lighting fixture

Info

Publication number: US1870194A
Application number: US495368A
Authority: US
Inventors: Edwin F Guth
Original assignee: Individual
Current assignee: Individual
Priority date: 1930-11-13
Filing date: 1930-11-13
Publication date: 1932-08-02
Anticipated expiration: 1949-08-02

Description

Aug. 2, 1932. E. F. GUTH 1,870,194

LIGHTING FIXTURE Filed Nov. 13, 1930 I INVENTOR 353/ 7 0412/ ATTORNEY Patented Aug. 2, 1932 UNITED sTArEs EDWIN F. GUTH, OF WEBSTER GROVES, MISSOURI LIGHTING FIXTURE Application filed November 13, 1930. Serial No. 495,368.

My invention relates more specifically to that class of lighting fixtures term-ed indirect, although it will be seen from the hereinafter contained description that it is not limited thereto.

In that class of fixtures an opaque bowl is used to shield the eyes from the intense light of the present high-powered gas-filled electric light bulbs. The inside of the bowl forms a reflecting surface, or may be equipped with a supplemental reflector. In this type of fixture it is highly important for the filament of the lamp to be properly located in order to attain the greatest efliciency.

My invention has for its object, to provide means for adjusting or positioning the lamp with respect to the bowl, so as to permit of locating it, not only to secure the greatest efliciency, but to enable its adjustment so as to deliver the light rays over any desired amount of ceiling space.

My invention has for its further object, to provide means which will, in addition to providing the necessary adjustment, also form a socket cover which will cover the neck of the! lamp and prevent the specular rays reflected from the filament from striking the eyes of the observer.

A further object is, to provide means to lock said cover when positioned or adjusted.

My means for accomplishing the foregoing objects may be more readily understood by reference to the accompanying drawing, hereto annexed and made a part of this specification, in which Fig. 1 is a side elevation of a lighting fixture equipped with my improvement, a portion of the exterior being broken away to show the construction.

Similar reference numerals refer to similar parts throughout the entire description.

As shown in the drawing, the indirect bowl 1, preferably formed of suitable opaque material, is shown suspended by a plurality of wires 2, the inner ends 3 of which are secured in holes formed on a peripheral flange a formed on the fixture-supporting socket cover or shell 5. This socket cover 5 is provided with a plurality of threads 6 which fit threads 7 formed upon the outside of the socket S and extend the entire length of said socket 8. The socket 8 is shown carried by a loop 9 of a chain 10, which extends to a canopy 11, and is secured to the outlet or junction box (not shown) in any of the standard ways employed for that purpose. Though I have shown the socket 8 supported by a chain 10, itwill be apparent, to persons skilled in the art, that any desired form of suspension means may be employed.

An upper socket cover or shell 12 is provided with threads which also fit the threads 7 on the socket 8, and is adapted to be screwed down against the socket cover or shell 5 after it has been positioned, thereby locking it firmly in place.

The device is assembled as follows: The socket 8 is suspended the desired distance below the ceiling (not shown), and the lamp 15 screwed into place. The wires 2 carrying the bowl 1 are then attached to the socket cover 5 through the medium of the holes in the flange 4, when by rotating the socket cover 5 upon the threads 7 on the socket S, the distance between the inner or reflecting surface of the bowl 1 can be increased or diminished until it is positioned correctly, when the upper shell 12 is screwed tightly down against the shell 5, and the fixture-supporting shell or socket cover 5 is locked permanently at the desired position to render the greatest efliciency from the reflecting surface of the bowl 1.

Having described my invention, what I regard as new, and desire to secure by Letters Patent of the United States, is:

An indirect lighting fixture comprising suspension means, a socket carried thereby, external threads on said socket which extend through the entire length of said socket, an electrlc lamp in said socket, a socket cover having a threaded portion Which fits said threads, a skirt on said cover adapted to enclose the neck of said lamp, there being a plurality of holes in said skirt, a. bowl the inner surface of which forms a reflector, means engaging said holes and supporting said bowl and an inverted skirt-like shell threaded on the upper part of the socket to lock the socket cover in a predetermined position and to conceal the socket from view.

EDWIN F. GUTH.