US1915975A

US1915975A - Lighting fixture

Info

Publication number: US1915975A
Application number: US656137A
Authority: US
Inventors: Harold A Breeding
Original assignee: General Electric Co
Current assignee: General Electric Co
Priority date: 1933-02-10
Filing date: 1933-02-10
Publication date: 1933-06-27
Anticipated expiration: 1950-06-27

Description

June 27, 1933. H, A BREEDING 1,915,975

LIGHTING FIXTURE Filed Feb. 10, 1933 Inventor: Hccrod A. Bree ding,

bg WM His Attorney.

Patented June 27, 1933 UNETED srATEs PATENT OFFICE HAROLD A. BREEDING, 0F SCHENECTADY, NEW YORK, ASSIGNOR TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK LIGHTING FIXTURE Application filed February 10, 1933. Serial No. 656,137.

My invention relates to lighting fixtures for decorative and advertising purposes, and more particularly to supports for color hoods used in such fixtures.

L, It has been heretofore customary in electric advertising fixtures, or signs, to mount a color hood upon the ends of the electric incandescent lamps. This practice resulted in the breakage of lamps in that the weight of the hood broke the lamp bulb from its base. Other arrangements included the enlarging of the color hood so as to enclose the entire lamp and permit fastening the hood onto the lamp socket or onto the body of the figure. This latter arrangement necessitated an expensive hood and resulted in an inefficient distribution of light.

It is, therefore, the principal object of my invention to provide in a lighting fixture an 20 improved support for a color hood which prevents breakage of the lamps due to the weight of the hood and at the same time provides for an efiicient distribution of the light emitted by the lamp.

My invention will be better understood from the following description, when considered in connection with the accompanying drawing, and its scopewill be pointed out in the appended claims.

Referring to the drawing, Fig. 1 illustrates a lighting fixture having a color hood and support therefor made in accordance with my invention, the latter being shown in cross section; Fig. 2 is an assembly view of the color hood and support; Fig. 8 is an enlarged view of the bail-catch on the hood, and Fig. 4 is a bottom view of the support illustrating the flange by means of which the support is fastened to the fixture.

Referring to the figures in detail, 10 is a support for a color hood 11. It comprises a tubular section 12 surrounding the lower neck portion of an incandescent lamp 13 and a flared reflector portion 14 which is highly J polished on its inner surface and reflects the Illlight of the lamp outwardly through its open end. The shape of this reflector portion depends, of course, on the particular light distribution that is desired. The reflector illustrated is parabolic and throws diametrically opposite and are large enough for the heads of screws 26 to pass through them. Slots 28 extending from the holes 27, respectively, are wide enough to accommodate the bodies of the screws 26 and thereby permit a slight turning of the support after the screw heads project through the holes 27. The support can then be locked in place by tightening the screws against the portion 01": the flange which is between the screw heads and body 18. By this arrangement the hood is supported independently of the lamp, it being supported by the body 18 of the fixture.

The hood 11 is held in place by a spring bail 20 which is hooked into the support 10 at each end and held in looking position by a spring-catch 21 on the hood 11. The spring-catch 21 comprises a spring washer 22 provided with a hooked extension 23 over which the bail is held when in the locking position. The washer 12 is held in place by a bolt 24 and nut 25, the bolt extending through the wall of the color hood.

Resilient washers

29 and 30 are used between the nut and the bolt on the two respective sides of the color hood to hold the assembly tightly against the color hood.

The support I have thus described is inexpensive to manufacture and provides an eflicient light distribution. The color hood can be attached thereto and released with a 1. In a lighting fixture, the combination of a color hood, a support therefor, and meansfor fastening said hood to said hood support comprising a resilient bail attached to said support and a spring catch for said bail mounted on said hood.

2. In: a lighting fixture, the combination of an incandescent lamp, a color hood and a support therefor surrounding said lamp, said support being mounted on said fixture independently of said lamp, and means for fastening said hood to said support comprising a resilient bail attached to said suppo t and a spring catch "for said bail on said hood.

3. In a lighting fixture, the combination of a color hood and a support therefor, said support comprising arefiector, means for fastening the hood to: said reflector comprising a resilient bail attached to the support, and a spring catch for said bail mounted on said hood.

4. In a lighting fixture, the combination of an incandescent lamp, a socket therefor attached to saidfixture, a color hood and support thereforsurrounding said" lamp, said support being attached to said fixture and including a reflector portion, said color hood enclosing the open end of the reflector portion of said support, and means for fastensaid color hood to said support comprising'a resilient bail attached to said reflector portion and a spring catch mounted on said color hood.

In Witness whereof I have hereunto set my hand.

HARQLD A. BREEDING.