US1393079A - Electric fixture - Google Patents

Description

F. L. BUTLER.

ELECTRIC FIXTURE.

APPLICATION FILED Nov. 2e. I92o.

Patented Oct. 11, 1921.

/NVZNTOE UNITED STATES PATENT OFFICE.

ELECTRIC FIXTURE.

Specification of Letters Patent.

Patented oct. 11, 1921.

Application filed November 26, 1920. Serial No. 426,495.

T o all whom t may coacem Be it known that I, FRANK LOWELL BUT- LER, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Electric Fixtures, of which the following is a full, clear, and exact description.

My invention relates to improvements in electric fixtures, and it consists in the combinations, constructions and arrangements herein described and claimed.

An object of my invention is to provide an improvement over the electric fixture disclosed in my l prior application, filed October 2, 1920, said improvement consisting in the provision of an electric xture that is more simple in construction and at the same time equally effective for the purpose intended.

A further object of my invention is to provide a device of the type described that can be manufactured cheaply, consists of relatively few parts, and is thoroughly practical commercially.

Other objects and advantages will appear in the following specification, and the novel features of the invention will be particularly pointed out in the appended claim.

My invention is illustrated in the accorpanying drawings forming part of this application in which- The figure is a vertical section through the preferred form of the device.

Referring now to the figure, 1 make use of a fixed support, such as a gas pipe 1, projecting from a ceiling 2. An interiorly threaded coupling formed with the transverse partition 4 intermediate its length is fitted on the threaded end portion of the gas pipe 1. A tubular insulatingl member 5 is threaded exteriorly at 6 for engagement with the bushing 3. The insulating member 5 is also threaded interiorly at 7 adjacent its lower end to receive the threaded portion 8 of a bushing or plug 9 that is screwed therein until the flanged portion 10 thereof abuts against the lower end ofthe insulating member 5. Theflanged portion 10 of the bushing is provided with an annular slot in its peripheral wall to define a shoulder 11 against which the upper end of a tubular metallic member 12 abuts.

Thetubular metallic member 12 is formed with .an inwardly extending flange 13 at its lower end. The tubular metallic member 12 is maintained in adjusted position relative the bushing 9 by a rod 14 that is extended entirely through the former and has its threaded upper end 15 engaging the threaded bore 16 of the bushing 9,v the lower end portion of the rod 14 being fashioned into a U-shaped link 17 having slots 18 and 19 in the remote walls thereof to provide horizontally alined shoulders 2() and 21 respectively, adapted to support the flanged end of the tubular member 12. It is obvious that the tubular member 12 is maintained rigidly in the position shown when thev rod 14 is turned, as by grasping the link portion 17 thereof, until a tight connection is established between the shoulder 11 and the upper end of the stem and between the flange 13 and the shoulders 20 and 21. The link 17 is adapted for connection with the links of a chain or the like, not shown, which may be depended therefrom to support a'suitable lighting fixture not shown. Electrical conducting wires 22 adapted for connection with the electric lighting fixture referred to are passed into the relatively open lower end of the metallic tubular member 12 and therefrom through lateral apertures 23 adjacent the upper end thereof, being then connected to the electrical conducting means, not shown, ordinarily installed in the ceiling 1. A canopy 24 that is slidable along the metallic tubular member 12 is secured in adjusted position by means of a set screw 25.

From the foregoing description of the various parts ofthe device, the operation thereof ymay be readily understood. The device comprises relatively few parts and can be assembled and installed with economy in time and labor. The insulating member 5 provides an adequate means for insulating the bushing 9 and the parts located therebelow from the fixed support 1. 1t will be noted that the rod 14 has a double function in that it serves as a support for the elements of the electric lighting fixture that will be attached thereto and at thev lsame time maintains the parts of the device in assembled condition. I thus provide a simple and effective device that has the appearance of a. more complicated and costly fixture.l

In an electric fixture, the combination of a fixed support, a tubular insulating member threaded interiorly adj'acentione end, means for securing the other end of said insulating member to the fixed support, a bushing having a portion engaging the nteriorly threaded portion of the insulating member, a second tubular member having one end thereof abutting against said bushing, and means connecting with said bushing and extending through said second named tubular member for maintaining the latter in adjusted position relative the bushing and for supporting any suitable electric lighting fixture arranged to depend therefrom, said last named bore of the bushing and being formed adjavcent its opposite end into an open link, said link having its side members fashioned to provide shoulders adapted to abut against the adjacent end Wall of said second named l tubular member.

FRANK LOWELL BUTLER.

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