US986274A - Light-fixture. - Google Patents

Description

M. F. FINKELSTEIN.

LIGHT FIXTURE.

APPLICATION FILED FEB. 23, 1910.

Patented Mar. 7, 1911.

WITNESSES.

ATTORNEYS if 5 i 0 F2 LIGHT-FIXTURE.

Specification of Letters Patent.

Patented Mar. 7, 1911.

Application filed February 23, 1910. Serial No. 545,371.

To all whom it may concern:

Be it known that I, Mourns F. Fmxnn- STEIN, a citizen of the United States, and a resident of the city'ofl New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved Light-Fixture, of which the following is a full, clear, and exact description.

This invention relates to light fixtures for use in connection with certain incandescent electric, and other lights, and has reference more particularly to a light fixture comprising a part having means for securing the fixture to a support, and a part having means for carrying a lamp, and a resilient connection between the parts, permitting a limited freedom of the relative movement thereof, one of the parts being enlarged to receive the slack of a conductor extending through the fixture to the light, when the parts are in their normal, relative positions.

The object of the invention is to provide a simple, strong and durable light fixture for use with fragile incandescent electric and other lights, which is compact in form and attractive in appearance, which lends itself readily to ornamentation, and which provides a resilient support for the light, and acts as a shock absorber to protect the light from injury due to jarring or vibrat10n.

The invention consists in the construction and operation of the parts to be more fully described hereinafter and particularly set forth in the claims.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views, and in which- Figure l is a longitudinal section of an embodiment of my invention; Fig. 2 is a partial longitudinal section of a modified form of my invention; Fig. 3 is a longitudinal. section of a further modified form of the light fixture; and Fig. i is a partial longitudinal section of another modified form of the fixture.

Before proceeding to a more detailed explanation of my invention, it should be clearly understood that while the fixture is designed particularly for use with so-callcd tungsten electric lamps, it can also be advantageously employed with other fragile lights, which are preferably resiliently sup-- ported so that shocks are absorbed to prevent injury to the filaments or other parts of the lights. My invention consists of a fixture of two relatively movable parts which are resiliently connected, one of the parts serving to carry a lamp, and the other serving for the attachment of the fixture to a ceiling or wall bracket, or any other suit able support. The resilient. connection between the parts serves as a shock absorber, and permits of a limited relative movement: of the parts. In my fixture, one of the parts is enlarged so that thc fixture can contain a comparatively large amount of the slack of the conductor carrying current to the lamp, when the parts are in their normal positions. This permits the parts to separate against the tension of the spring, without stretching the conductor. If the conductor is not slack in the normal position of the parts, the conductor itself serves to support the light and the resilient connection is practically aborted. Certain of the details of construction form no part. of the invention and can be varied in accordance with individual preference and special conditions, without departing from the underlying spirit of the invention.

Referring more particularly to the drawings, in Fig. 1 I have shown a form of the invention comprising a shell 10 fashioned from brass or any other suitable metal, and having any desired ornamental form. It is preferably of circular cross-section, and has at the lower reduced end, a threaded sleeve 11 adapted to have the lamp socket attached thereto in the usual manner. The shell 10 comprises two portions 12 and 13, the latter of which is tapered. The portion 12, at its upper rim, is outwardly offset, and has a flange. 14 adapted to engage a correspond ingly formed flange 15 on the portion 13, these flanges serving to hold the portions together.

I employ a sleeve 16, having at the lower end a laterally extended flange 17 and carrying at. the upper end a head 18. The head has a threaded portion 19 by means of which the fixture can be secured to a suitable support. The head, further, has a laterally extended part 20 forming a shoulder adapted to seat at the upper rim of the portion 13 of the shell. \Vithin the shell is located a helical spring 21, seating at one end upon the flange 17, and at the other end against the flange 15 within the flange 14. The

spring tends to hold the head 18 of the sleeve 16 seated against the rim of the por tion 13 of the shell. I p

,The conductors 22 which carry current to the lamp (not shown) 'pass through the sleeve 16, into the shell 10,'in which the' slack 22 of the conductors is located. The conductors extend through the threaded sleeve 11, to the light socket. 'When the fixture is extended, owing to the weight of the lamp, or for other reasons, the shell moves downwardly against the tension of the spring upon the sleeve 16. This movement is not interfered with by the conductors. Owing to the slack 22, shocks are absorbed by certain movements of the shoulder and the sleeve, in the direction of the length of the sleeve, and in this case, too, the slack 22 insures complete freedom of movement within the limits of the device.

In Fig. 2 I have shown a form of fixture in which the shell 23 is substantiallycylindrical and has secured within the rim thereof, the li ht socket 24, which may be of any suitable Torin. A sleeve 25 through which the electrical conductors 26 pass, has at the lower end a laterally extended flange 27, and is movably arranged in an opening 28 at the upper end of the shell 23. A spring 29 surrounds the sleeve 25 and engages the flange 27 and the inside of the upper end of the shell. The latter receives the slack 26 of the conductor, as does the shell 10.

In Fig. 3 I have shown a further modified form of the invention, in which I employ a shell 30 of circular cross section, having a flange 31 by means of which it can be screwed or otherwise fastened to a ceiling. The shell is tapered toward the lower end, where it has an inwardly disposed rim 32 about an opening 33. Within the shell is a partition 34 having an opening 35 through which theconductors 36 pass. A sleeve 37 has at the upper end a laterally extended flange 38, and extends through the opening 33, havin at the lower end a rib extension 39 adapted to seat at the end of the shell. It is also provided with a threaded part 40 to which the lamp socket can be secured.

Within the opening 33 is an insulating ring 41, the edges of which are outwardly disposed to receive therebetween the rim" 32. An insulating seat 42, annular in form and of t. cross-section is positioned upon the rim 32 within the shell, and has the inner edge received by the rim of the insulating member 41. A spring 43 encompasses the sleeve 37 and rests upon the seat 42, engaging at the upper end, the flange 38. The slack 36 of the conductors 36, is located within the shell, preferably above the partition 34.

In Fig. 4 I have shown a modified form of fixture, in. which a substantially cylindrical shell 44- has an outwardly disposed rim or flange 45, by means of which it can be secured to a support. The lowerend of the shell is inwardly disposed and has surrounding an I approximately central opening, an inwardly offset rim 46. A collar 47 is mounted within said opening and at the inside has a laterally-extended flange 48. Within the shell is an insulating lining 49 conforming to the shape of the lower end of the shell, and having its inner rim seating at the rim 46. An insulating ring 50 of mica or other suitable material, is positioned between the flange 48 and the rim 46, and extends over the inner rim of the insulating lining 49.

The collar 47 has an outer, laterally disposed rim flange 51,-between which and the rim 46, is positioned an insulating ring 52, of mica or like material. It will be understood that the flanges 48 and 51 serve to secure the ring 47 in place, and also hold the insulating rings 50 and 52 at opposite sides of the rim 46 of the shell. A sleeve 53, similar to the sleeves 16 and 37, is movably positioned within the ring 47, and has mounted around it a spring 54, seating against the insulating lining 49 at the end of the shell, and against a flange 55 at the upper end of the sleeve The conductors 56 pass through the sleeve, as is the case with the other forms of my invention. The sleeve has a collar 57 which engages at the outside of the ring 47 and limitsthe inward movement of the sleeve. It isalso provided with means for securing thereto a light socket.

Having thus described my invention, I claim as new, and desire to secure by Letters Patent 1. A light fixture, comprising a shell, means for carrying a light, a sleeve within said shell and projecting therefrom, means for securing the fixture to a support, and a spring engaging said sleeve and said shell, said shell being extended about said sleeve, to receive the slack of a conductor extending through said shell and said sleeve, said sleeve engaging said shell to limit the movement thereof.

2. A light fixture, comprising a shell having means for carrying a light, a sleeve arranged within said shell and projecting therefrom, said sleeve having a head adapted to engage said shell, a spring within said shell and engaging said shell and said sleeve, to maintain said head in engagement with said shell, and a conductor extending through said sleeve, said shell being extended to receive the slack of said conductor.

3. A light fixture, comprising a shell having means for carrying a light, a sleeve movably arranged within said shell and projecting to the outside of the same, said sleeve having a head adapted to seat against said shell, said sleeve within said shell having a flange, and a spring surroundlng sa1d sleeve and engaging said flange, said shell having an abutment against which said spring seats, whereby said spring serves to maintain said head seated against said shell, said shell being formed to receive the slack of conductors extending through said sleeve and said shell.

4.91, light fixture, comprising a shell adapted to be secured to a support and hav- &

ing at said rim, and an insulating seat within said shell about said opening, and having 5 name to this specification in the presence 20 of two subscribing witnesses.

MQRRIS F. FINKELSTEIN.

Witnesses v JOHN K. BRAOHVOGEL, PHILIP D. ROLLI-IAUS.

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