US1401460A - Electric fixture - Google Patents

Description

F.'L. BUTLER. ELECTRIC FIXTURE. .APPLICATION FILED 06]'. 2. \920.

Patented 1m 27, 1921.

UNITED sTATss raffiner OFFICE.

ELECTRIC FIXTURE.

Specification of Letters Patent.

Patented Dee. 27, 1921.

VApplication led Detobcr 2, 1920. Serial No. 414,211.

To all 'whom it may concern.'

Be it known that I, Fawn l'iowum;J Bur LER, a citizen of the United States. and a residentof Chicago, in the county ot' Cook and State of Illinois, have invented a new and useful Improvement in Electric Fixtures, of which the following is a full7 clear, and exact description.

My invention relates to imyn'oveinents in electric fixtures, and it consists in the combinations, constructions,4 and arrangements herein described and claimed.

Anobject of my invention to provide in` an electric fixture an insulated stein adapted to insulate a lighting fixture or the like that depends therefrom from a fixed support without it being necessary to provide the usual insulating joint.

A further object ofniy invention is to provide a device of the type described that 1s at once simple in construction, ornamental in appearance, and effective for the purpose intended.

A furtherobject of my invention is to provide a device of the type described that `can be readily manufactured in large quantities at a relatively small cost, and which is thoroughly practical commercially.

Other objects and advantages will appear in the following specieation, and the novel features ofthe invention will be pa rt'icnlarli7 pointed out in the appended claims.

My invention is illustrated in the accom panying drawings, forming part of this ap plication, in which Figure l is a central section through the device,

Fig. 2 is a plan view of a portion of the device,

Fig. 3 is a side view of the portion of the device shown in Fig. 2.

. In carrying out my invention, I make use of a suitable fixed support, such as a gas pipe l, that ordinarily depends from a ceiling 2. The pipe 1 is threaded. exteriorly at ftlireaded lower portion of the coupling 3. lhe tubular insulatil'ig member 5 is also threaded adjacent itsI lower end to receive a ri'intlitlmt supports a casing T. The casing i tightly lncases the tubular insulating member 5 for a portion olf the length ol the latter and serves a double function of preventing expansion of the tubular insulating member on account of inherent defects in the material or extraneous influences, such as teinperatine changes.

The nut G has a depending 'harmed with a central bore Q andV has its wall then ,Fashioned into link l() to which suitable suljiporting members. such as the linkv l1, .for supporting a lighting: iixtnre (not shown) may be secured.

The tubular insulating member 5 has an pliliquely directed lateral aperture extending through its wall above the upper end oif the casing i' at a spaced distancenbelow the lower end oile the coupling The upper and lower walls of the aperture l2 are het eled at 17 and 18. respectively. A plug 19 bereled at i9 that entirely iillsy the bore l-i of the tubular insulating member 5 is secured within the same with its beveled wall in alinement with the beveled upper wall of the aperture l2 as shown. Electrical conducting wires fi-43 vfrom a lighting fixture or the like (not shown) passed int-o the here lfl ol.' the insulating member 5 through the bore 9 of the extension 8 areguided when moved upwardly through the aperture l2 and may then be connected to the wires (not shown) that ordinarily project from the ceiling 2.

The usual canopy 15 is mounted on the casing 7 and secured in adjusted position therealong, as shownJ by means of a set screw 1.6. The coupling 3 in the form of the device illustrated is hexagonal in shape, as best seen in Fig. 3 and therefore adapted to be engaged by an ordinary wrench or the like.

From the foregoing description of the various parts of the device, the operation thereof may be readily understood and requires no detailed description. The device is simple in construction and at the same time meets all the commercial requirements for an electric Xture provided with an insulated stem, without it being necessary to provide the usual insulating joint. The tuextension 8 bular insulating member is entirely coneealed from view by the casing 7 and the canopy 15, Wherefore the device may be ornamental in appearance or formed in any desired manner to match other ixtures, While being at'the same time ell'ective for the purpose intended.

One of the principal advantages obtained when the device is used in its preferred form lies in the fact that the electrical conducting` Wires 13-13 can be passed from the bore of the stem through the aperture 12 Without the diilicultv that was usuall;7 encountered in accomplishing this result prior to my invention.

claim:

l. In an electric fixture, an insulated stem consisting` of a tubular insulating member threaded exteriorly at each end and formed With an obliquely directed lateral opening through its -Wall a predetermined distance from the upper end thereof, a coupling screwing on the upper end of said insulating member and adapted for connection with a fixed support, a casing arranged to cover the lower portion of said insulating member to a point adjacent the lateral opening, a nut screwing on the lower end of said tubular insulating` member and 'formed to provide a seat for said casing, said nut being formed with a depending extension having a central bore, said depending extension having a portion formed into a link adapted Vto support a lighting fixture element, electrical conducting Wires arranged to enter the bore of the tubular insulating member through the central bore in 'the depending extension to said nut and to pass therefrom through the obliquely directed lateral opening, and means disposed in the bore of the insulating member above the obliquely di-A rected opening for divertingr the electrical conducting wires through said opening.

2. In an electric llxture, an insulated stem consisting of a tubular insulating member having a bore, said tubular insulating member beine lorlned with an opening through its Wall at spaced distance trom the upper nd thereof, said opening haring beveled upper and lower walls, means connecting with the upper end of said insulating member for connecting tho latter to a (ixed support3 means carried at the lower end oi said insulating member for supportingl a lighting ixture element, electrical comluctiug wires for connection with the lighting lixture and arralwed to enter the here of the insulating` member, and means Yfor guiding the electrical conducting wires from the here of the insulating member through the opening in its Wall.

In an electric fixture, an insulated stem comprising a tubular insulating member uniiform in diameter for its entire length and having a lateral opening through its Wall, a plug inserted into the bore of' said tubular insulating member at the upper end thereof and disposed Within the bore in position to divert a flexible member from the bore of the tubular insulating member through the latu'al opening, said plug being formed with the lower end thereof heveled to extend from a lower horizontal plane to a plane located above the lateral opening, means connecting with said insulating member at its upper end for securing the latter to fixed support, and meanseonnecting with the insulating member at its lower end for supporting a lighting fixture element.

FRANK LOWELL BUTLER.

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