US1644926A

US1644926A - Electric-light fixture

Info

Publication number: US1644926A
Application number: US111916A
Authority: US
Inventors: George B Kurtzon
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-05-27
Filing date: 1926-05-27
Publication date: 1927-10-11
Anticipated expiration: 1944-10-11

Description

' Oct. 11,1927. 1 ;'644,926

, G. B. KURTZON ELECTRICLIGHT FIXTURE Original Filed May 27. 1926 Patented Oct. 11, 1927.

GEORGE B. KUBTZON, OF CHICAGO, ILLINOIS.

ELECTRIGLIGI-I'l FIXTURE.

Application filed ,May 27, 1926, Serial No. 111,916 Bcnewed June 22, 1927,

My present invention has to .do with improvements in electric light fixtures and relates particularly to that variety of fixture which comprises not only a socket for the bulb and a support for the socket, butalso a refiector and a casing which contains the elements above enumerated, and also functions as a conduit to receive and, contain the conductors for supplying the bulb with the necessary power. Such fixtures are usually employed for illuminating showcases, cabinets and other like places where the room available for installation is restricted, and it is desired to direct as much as possible of the light produced in a definite direction and throughout a restricted space. My'particular objects have been not only to produce a simple and effective structure of the kind mentioned, which can be economically manufactured and marketed at an attractive price, but also to produce such a structure in which the reflector may be removed and replaced for cleaning or replacement without disassemblingthe structure or disturbing the other elements, and also to provide support for the elongated bulb employed in such structures in addition to and remote from the support afforded by the bulb socket. The reasons that render these pan ticular features desirable are,-first, that the efiectiveness of such a fixture depends to a large extent upon the condition of the re fiector which should be capable of easy removal and thorough cleaning, and, second, the long bulbs and long filaments used in such fixtures unless supported at their remote ends, as well as their bases, are subject to vibration which considerably reduces the life of the filaments.

I attain the foregoing objects by means of the structure illustrated in the acco1npanying drawing, in which g. 1 is an elevation or view looking into the opening or fenestra of the fixture;

Fi 2 a similar view as that shown in 1 of xactly the reverse or back of the Fig. 3 is a longitudinal central section on line 33 of Fig. 1;

Fig 4 is a transverse section on line l4 of Fig. 1, and

Fig. 5 is an end view of the structure.

Similar reference characters refer to similar parts throughout the several views.

The casing or body of the fixture upon and within which the other parts are mounted consists of an elongated rectangular blank of sheet metal 10, of requisite thickness rolled or formed transversely so as to, have preferably a parabolic cross-section. It will be noted that this casing is deeper than the reflector. hereafter to be described, so as to be spaced therefrom except at the outer and forward edges of these parts, to permit ventilation and dispersion of heat, and also to receive the conductor wires. The longitudinal edges of the casing are turned or bent inwardly and. back upon the blank, or seamed as at 11 and 12. The ends of the casing are closed by end pieces comprising spaced plates, 13, connected at their forward edges by a web, 14, the central por tion of which is ordinarily out out, as at 15, and the ends of which are slightly extended beyond the plates 13 and bent forwardly to enter the

seams

11 and 12, which seams are then pressed down tightly at the places where the ends of the webs 14 enter them, thereby effectively retaining the ends of the casing in position without solder or other mechanical expedient. If desired, the ends may be further strengthened and finished by screwing to the web 14: a cover plate, 16, the ends of which extend up and over the

seams

11 and 12. The outer plate 18 at one end of the casing is perforated for the passage of the conductors, 17, and to receive the end of the conduit, 18. The inner plate 13 at the opposite end of the casing is also perforated for the passage of the conduits and to receive a nipple, 19, upon which the bulb socket, 20, is'inounted.

If desired, a piece of metal, 21, of inverted U-shaped section may be extended between and secured to the inner plates 13 at the respective ends to receive and more perfectly conduit and protect the conductor wires.

One of the seams, say 12, between the end closures, is left open to receive a forward edge 22 of the reflector, 23, the opposite edge 24 of which is seamed outwardly and flat for finish and stiffening. The seam 11 of the casing is also close or flattened throughout its entire extent.

The reflector, 23, may be of any desired conformation. I have shown a polygonal conformation which serves very well but which shape is not essential to the practice of my invention. As will be seen the reflector may readily rotate either into or out of assembly with the casing without disturbing the assembly of any of the parts heretofore described.

About one quarter of the length of the reflector from the endopposite the location of the socket 520 I secure thereto by means of a rivet, 25, the light spring clip,

26, for engaging and holding against vibration the outer or remote end of the electric light bulb, 27. lhe reflector is held in assembly With the casing by 'means of the slide plates or latches, 28, provided With slots, 29, for the passage of headed screws, 30, passing through bores provided in the cover plates, 16, and, screwing into tapped openings in the Webs, 14.

Having described my invention, What I claim as new and desire to secure by Letters Patent is:*

'1. An electric light fixture comprising a casing having a fenestra and double spaced Wallend closures, a bulb receiving socket mounted upon an inner Wall of one of said out of said casing about'said socket and spaced from said casing except at the respective longitudinal edges of said casing and reflector, and releasable means for securing said reflector in assembly With said casing.

2. An electric light fixture-comprising a casing having a fenestra and double spaced Wall end closures, a bulb receiving socket mounted upon an inner Wall of one of said end closures, a reflector rotatable into and out of saidcasing about said socket and spaced from said casing except at the respective longitudinal edges of said casing and reflector, a spring clip secured transversely of said reflector opposite the location of said socket, and releasable means for securing said reflector in assembly with said casing.

GEORGE E. KURTZON.