US1160859A

US1160859A - Electric-lighting fixture.

Info

Publication number: US1160859A
Application number: US83429914A
Authority: US
Inventors: John H Dale
Original assignee: Individual
Current assignee: Individual
Priority date: 1914-04-25
Filing date: 1914-04-25
Publication date: 1915-11-16
Anticipated expiration: 1932-11-16

Description

income.

JOHN H. DALE-03F NEW YURK, NIY.

2T0 all wkomsit may concern:

szen of the United States, residing at the city of .New York, in the:borough.of Manhattan -andiState of'New York, have invented certain :new and us.eful Improvements in Elec- -";'.tr' i'c-Lighting Fixtures, of which the follow in is a full, cleansandexactdescription.

r This invention relates to electric lighting systems and has special reference to that style of lighting fixture which is used in indirect lightingsystems.

The object of the invention .is to provide afixtureofthis class which will, to the-least extent,:obstruct theraysof light which are projected upward toward :the ceiling from the slampsthat areattac'hed to the fixture.

Another obj ect of the invention isto -.pro-

videin asimple and compact fixture means -for usingfpull-sockets, and. a still further ob- 1j ect of the invention is ito provide. a fixture of'thisclasszinuwhich theshade can be read- .ily zremoved and .replaced for cleaningpurposes by a simple operation and without disturbing the lamps.

"With these and other objects in view, the

- general construction ofmy improved fixture comprises the combination of a=hollow hub and a shade supporting .pan detachably secured -.thereto,=thehub and pan being connected :tO-ihe center or lowermost point of the shadeand. being adapted to support .the lamps intan :upwardly and outwardly inclined position, and to accommodate the .pull-c'hains Oft'll8.-S0Ok9ilS ofsaid lamps by i pel'mittingtthem to pass :through the hub anditheapan for convenient manipulation at -apointbelow-the shade. The'hub and pan are supported at the lower end of ai'tubular stem, whichstem is the only part of the fix- ;tureinterposed betweenthe lampsand the ceiling.

My invention also includes other details and constructions which will be fullyhereinafter described and particularly-pointedout in the claims.

In the accompanying drawings: Figure l The fixture :comprises two rma'in parts, -=a

hollow hub 1:;and-apan2. These parts may Specification of Letters Patent.

usual sizes of openings at the center.

stantially concentric therewith.

ELECTRIOLIGHTING FIXTURE.

beeither cast, or formed of sheet metal; as

:thread. The pan 2 is provided with a central upwardly extending neck 6 having an external screw-thread adapted to engage with thethread in the boss 5. A passage 7 Patented Nov. 16., T9156. .Applicationfiled April 25,1914. 'Seria1No.83e,299.

leads through the neck 6 and affords free communication-tothe interior of thehub '1.

'The upwardlyextending sides 8 ofthe pan 2 'lucent, making the fixture semi-indirect.

In any case the central or-lowest point of the shade is provided with an opening which may or may not be surrounded by a flange or neck 10. Shades of this character are usually provided with such a flange for which reason it is shown inthedra'wing. These openings or flanges are of different stock sizes and my fixture is designed to receive and support shades which have any of the The shade isadjusted to the fixture by first unscrewing the pan 2 'from the hubl and then placing the shade in the position shown in Figs. 1 or 3 so that its inner surface willrest against the under wall of the hub and sub- The pain is then screwed into the hub until its bottom. or side flange 8 comes in contact with the exterior of the shade. The external diameter of the boss 5 issuch that the shade having the smallestopening will neatly fit around it while the internal diameter of the side flange 8 of the pan is such that the flange 10 of a shade having the large size of opening will neatly fit into it. Whena shade having openings of either ofthese two sizes isused,it will bemaintained firmly in a concentric position either by the boss 5 or the v to the fixture, such, for instance, as shown in ing of an intermediate size is to be'adjusted Fig.1, 1 use a spacing ring. or collar 11 which rests freely in the pan 2 and which fills the spacebetween the external surface of the boss 5 andthe internal surface'of the flange 10 and thereby centers and maintains the position of the shade.

Fig. 3'shows a shade havingthe' smallest size of 'openingan'd, as described, -is c,entered by direct contact with the boss 5. It will be seen that when the shade is attached to the fixture in the manner described it is held firmly between the pan and the hub in a perfectly concentric position; it is held in place without screws and the only part .of the fixture necessary to remove in order to remove the shade for cleanlng purposes,

is thepan 2 which can be readily and quickly unscrewed. This method of supporting the shade I believe to be novel in indirect lighting systems where the usual practice is to attach the upper edge of the shade either to a spider extending from the central stem or by means of chains or rods leading upward from the outer edge of the shade. All such contrivances are objectionable because they obscure the light from the lamps which are inclosed withinthe shade.

The lamps 12, any suitable number of which may be used, are supported directly by the hub 1 from the upper wall of which they radiate in an outwardly and upwardly inclined position. Being thus disposed no part of the fixture except the central stem 4 is located between the lamps and the ceiling, not even the sockets 13 of the lamps themselves are above the lamps, the result of which is that the full benefit of the candlepower of the lamps is obtained for illuminating purposes and shadows and spots are avoided. The lamp sockets are sustained by means of the usual threaded nipples 14 fixed in the upper wall of the hub 1 and adjacent to each nipple a perforation 15 through the Wall of the hub is provided through which to 0. ss thechains 16, when pull-sockets are used, for controlling the respective lamps. These chains after passing through the perforations .15, lead through the interior of the hub 1 and thepassage 7 in the pan to a suitable pointbelow the fixture in a convenient position to be reached and manipulated. All of the chains thus lead through one central opening and become less conspicuous than if they were widely separated or extended over the upper edge of the shade, as is often done.

The hollow hub 1 also has the additional function of housing the wiring of the fixture. The two main wires 17 and 18 lead chains leading from the sockets inside of are spliced to branch wires 19 and 20, one

pair leading to each of the lamps and passing thereto through the nipples 1 1. This wiring is shown conventionally in Fig. 1.-' but in practice it will be understood that the wires being heavily insulated and having taped joints, willoccupy considerable of the space within the hub. They can, however, be so packed into the hub as to leave sufiicient space for the pull-chains to pass through.

While I have referred herein to the part 1 specifically as the hub and the part 2 as a pan attached thereto, it is to be understood that this hub and pan when taken together constitute a single hub or hub-like structure, which engages with the central point of an upwardly extending shade and from which the lamps radiate upwardly and outwardly and that this hub constitutes a housing for the wires and 'afi'ords a passage for the the shade to the exterior thereof.

\Vhat I claim is:

1. An indirect electric lighting fixture comprising a shade, a hub detachably connected therewith at its central portion, lamps supported by said hub, said hub being provided with a central passage and pull-chains for controlling said lamps and leading through said passage.

2. An indirect electric lighting system comprising a two-part hub, the members of which are detachably secured together, one ofsaid parts being adapted to support a' shade and the other part being hollow and supporting lamps, the wiring of said lamps being housed within the said hollow part.

said hub being provided with openings and pull chains leadingthrough said openings.

3. An indirect electric lighting fixture comprising-a hub having a passage therethrough; a plurality of pull-sockets at tached to said hub, pull-chains extending from said sockets through the passage of saig. hub and a shade mounted upon said hu 1. In an electric light fixture the combination of a shade having a central opening; a pan adapted to support said shade, said pan having a central neck and a peripheral flange, and a spacing ring inserted between the edge of the opening in the shade and the central neck of the pan for the purpose set forth.

In witness whereof I subscribe my signature, in the presence of two witnesses.

JOHN H. DALE.

itnesses VICTOR D. BORST, WVALDo M. CHAPIN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. 0.