US1878084A - Lighting apparatus - Google Patents

Description

Sept. 26, 1932- F. c. WINKLER LIGHTING APPARATUS Filed Dec. 3. 1930 Patented Sept. 20, 1932 e FBEDERIC C. WINKLER, OF LAKEWOOD, OHIO, ASSIGNOR TO WESTDIGHOUSE ELECTRIC & MANUFACTURING COMlPANY, A CORIEORATION F EENNSYLVANIA.

LIGHTING APPARATUS Application filed. December a, 1930. Serial-No.439fi06.

My invention relates to lighting apparatus and particularly to hangers for interior lighting purposes.

It is deslrable to have a hanger for a globe of such character that the globe may be easily taken off and cleaned and such that one person may perform all the operations.

An object of my invention, therefore, is to provide a hanger for interior lighting in 7 i which the globe may be removed by holding it with one hand and releasing it from the hanger with the other, by turning the looking portion of thehanger a short distance.

Another object of my invention is to provide a holder that shall be adaptable to sev- 'eral different thicknesses of globeswithout increasing the number of parts and without increasing the cost of manufacture. Y

7 A further object of my'invention is 'to provide a two-point hanger having a strap pro vided with relatively long arms for holding the globe so that the resiliency of the arms will make breaking of the glob e less likely in case of a blow or excessive vibration.

Another object of my inventlon isto provide a hanger of such construction that the incandescent lamp will set' sufli'ciently forward in the holder to give the greatest amount of illumination. v V

1 A still further object of my invention is to provide a holder which may be easily detached from a wall in order that repairs may be made to the socket and the electrical connections. V a a w I 7 Other objects and advantages of the inventionwill be readily apparent from thefollowing description and the accompanying drawing in which Figure 1 is a sideview, partly in section, of the top part of the holder,

Fig. .2 is a' front elevational view of r Fig. 3 is a perspective view of the metal stamping which is fastened to the ceiling,

" -Fig. 4 is a perspective view of the metal stamping which hold the strap and socket rigidly to the top of the unit,

Fig.5 is a perspective view of the springmetal strap for holding the'globe, and

Fig. 6 is a perspective view of the assembled holder. f

According to my invention, the lighting unit comprises two cylindrical pieces of sheet metal, the lower or movable portion sliding intothe upper or fixed portion and being adapted to be turned and held in place by a 'pin-and-slot connection of the bayonet type.

The. U-shaped two-prongstrap for holding the globeis fas'tenedrigidly at right angles to. a set of flanges provided in a supporting means that is rigidly fastened to the upper sheet-metal cylinder. The lamp socket is held by the. same supporting means, but lower v in the unit, by a separate'set of flanges.

A bayonet slide, designed to allow for dif ferent thicknesses of glass, is placed on the lower sheet-metal cylinder. 5 Bayonet pins are Referring specifically to the drawing, 1 designates a cylindrical sheet-metal casing having a flange 2 at the top which is provided with two holes 3. A metal bar or strip 4 is fastened to the ceiling by screws or other suitable means which project through slots 5 therein. Screws 6 project through holes 7 in the metal bar or strip 4 and the holes 3 in the flange 2. Nuts 8 cooperate with the screws 6 to holdthe unit to the bar hand thescrews 6 also. project through the'holes 9 and 10 in flanged metal stampings 11 and 12 which are thus fastened to the casing 1.

A U-shaped strap 13, having outwardly 'flangedends 26, is attached to lips 16 and 17 the provided on the stampings .11 and 12, by means of screws l i which project through holes 15 in the strap 13, and holes 16 and 17 in the lips 16 and 17, respectively.

The socket 18 is fastened to the metal stampings 11 and'12 by screws 19 and 20 which project through holes 21" and 22' It will be noted that the flanges 21 and 22,

cleaning globes.

provided for holding the socket, are spaced below the lips 16 and 17 in order that the 1nc-andescent filament of the lamp may not be hidden by the casing and, at the same time,

permit the strap 13 to be relatively long. The

hole 25 in the flange 22 of stamping 12 may be used for a lar e socket, a corresponding hole 25 in flange 21 of stampingll being provided,

A cylindricalsheet-metal member 27 fits in:

side the cylindrical sheet-metal casing 1. A plurality of sets of bayonet slots, one of which is shown at 28, are engaged by bayonet plus 29. Any desired number of setseof bayonetpins and slots may be provided in spaced relation around the walls of the respective cylinders, Each of the bayonet slots comprises a vertical portion 30, ahorizontal portion 31 and an inclined portion 32.

The bottom cylinder 27 is shown in normal position in Fig. 6, in which the pins 29 are in the inclined slot portions 32, and the globe 34 is clamped between the flanges .26 and the beaded portion 33 of the cylinder 27.

If it is desired to remove the globe, the bottom cylinder 27 is turned until the bayonet pins 29 enter the vertical slot portions 30, and it is then pushed up into the casing 1 until the bayonet pins are inhorizontal alinement with the slot portions '31. The cylinder may then be turned until the pins 29 enter the slot portions 31. The globe 34 may then be removed without holding the cylinder 27 up by hand. i i

35 It may be seen'irom the foregoing desc'ription that my invention provides a hanger of simple and sturdy construction which may be cheaply manufactured and which maybe operated easily for changing lamps and It will also be seen that, because of the strap construction and place- =ment, a spring effect is obtained which acts as a shock absorber for the globe, andthat this result is accomplished with" maximum *efliciency from the source of light by placing the; socket near the bottom of the unit, so that no part'of the incandescent filament of the lamp will be hidden by the casing' Although I have shown and described speciflc embodiments of my invention, it will be understood that modifications may be made by those skilled in the art without departing from the spirit and scope of the appended F claim-s; I Iclalm as my invention:

' 1. In a lighting'fi'xture, the combination of two cylindrical shells slidably mounted one within the other, a flanged supporting member attached to one of said cylindrical shells. a metal globe-supporting yoke fastened-to: one flange of said member, and an electrical socket attached to anotherlower flange of said member.

2. In a lighting fixture, a yoke consisting of a single piece of material having its ends turned outward and adapted to support a globe, two cylindrical shells one of which is slidably mounted on the other, an electrical socket, and a plurality of flanged supporting members attached to the fixed-shell, said said supporting member, one of said cylindrical shells being provided with aplurality of bayonet pins and the other-shell being provided with slots adapted to engage the bayonet pins and also adapted to permit adjustment and clamping of the movable shell.

4. Ina lighting fixture, the combination of a yoke consisting of a single piece o'fma- .terial having its ends turned outward and adapted to support a globe, two cylindrical shells. one of which is slidably mounted on the other, and an electrical'socket, a plurality of flanged metal pieces attached to the uppercylindrical shell, said yoke being attached to the upper flanges and said socketbeing attached to the lowerflanges of said pieces.

5. In a lighting fixture, the'oombination of twocylindrical shells, one of which is slidably mounted on the other, one of said cylindrical shells being provided with aplurality 'of bayonet pins and the other shell being provided with slots to engagethe bayonet pins and adapted to permit adjustment and to clamp the adjusted shell in either of two positions, an electrical socket, a plurality of flanged metal pieces attached to the upper cylindrical shell, a yoke consisting of a single piece of material having its ends turned outward and adapted to support a globe, said yoke being attached to the upper flanges of said flanged metal pieces and said socket be -ing attached to the lower flanges of said flanged metal pieces. 6. In a lighting fixture, the Icombinatio of two cylindrical shells one of which is slidably mounted on the other, one of said cylindrical shells being provided with a plurality of bayonet pins and the other shell being provided with slots to engage the bayonet pins-and adapted to allow relative adjustment and clampingof the two shells, an

electrical socket, a plurality of flanged metal pieces attached to the upper cylindrical shell,

a yoke consisting of a single piece of material having its ends turned outward and adapted to support a globe, saidyoke being attached to the upperflanges and said socket being attached to the lower flanges of said pieces,

and adjustable means comprising a metal bar or strip adapted to be fastened to av ceiling and adapted to have the whole unit mounted cylindrical shell, a yoke having out-turned ends and adapted to support a globe, said yoke being attached to the upper flanges of said flanged metal pieces, and said socket being attached to the lower flanges of said flanged metal pieces. a

In testimony whereof, I have hereunto subscribed my name this 24-.th day of November,

FREDERIC C. WINKLER.

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