US1391611A - Electric fixture - Google Patents

Description

F. L. BUTLER. ELEGTRIG FIXTURE.

APPLICATION FILED NOV. 12, 1920- .1 39 1 ,6 1 1 Patented Sept. 20, 1921.

UNITED STATES PATENT OFFICE.

FRANK LOWELL BUTLER, or CHICAGO, ILLINOIS.

ELECTRIC FIXTURE.

To all whom it may concern:

Be it known that I, FRANK LownLL BUTLER, 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 F ixtures, of which the following is a full, clear,

"tive thereto by means of a nut screwed on the lower end of a rod that extends entirely through the tubular member and has its upper end engaging with a cap secured 'to the insulating member, said improvement consisting in the provision in an electric fixture of a novel form of stem.

A further object of my invention is to provide in a device of the type described, a stem that comprises the fewest number of parts consistent with effective operation in the service for which intended. V

A further object of my invention is to provide a device :of the type described that is simple in construction, ornamental in appearance, not likely to get out of order easily, and thoroughly practical commer Y r provide shoulders adapted to rest upon the ciall 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 claims. I

My invention is illustrated inthe accompanying drawings, forming part of this'application, in which Figure 1 is a central vertical sectional view of the preferred form of the device.

Fig. 2 is asimilar View of a fragmentary portion ofa modified form of the device.

Fig. 3 is aperspective View of a portion of the device.

Fig. 4 is a view similar to Fig. 1 of a fragmentary portion of another modified form of the device.

. In carrying out my invention, I make use Specificationof Letters Patent.

Patented Sept. '20, 1921.

Application filed November 12, 1920. Serial No. 423,638.

of a fixed support, such as a gas pipe 1 that ordinarily projects from a wall 2 and place on the threaded end thereof a coupling 3. The coupling 3 is formed with a transverse partition 4:, as shown. The stem of the device, in its preferred form, consists of an upper insulating member 5 that is threaded exteriorly at 6 for engagement with the coupling 3. Theinsulating member is preferably tubular, as shown, for lightness and economy, but obviously may be 'solid and formed as desired. A tubular .member 7 is fitted on the insulating member 5 and incases the lower portion thereof. A sufiicient length of the insulating member remaining uncased to effectually insulate the tubular member 7 from the coupling 3.

The lower portion of the insulating member 5 is preferably unthreaded and the tubular member 7 is secured in fixed relation therewith by means of a pin 8 that is projected through registering openings 9 and 10 in the walls of the tubular member 7 and the insulating member 5, respectively. This method of securing the tubular member 7 to the insulating member 5 obviates the necessity of threading exteriorly the tubular member 7 andtherefore permits the use of a tubular member having a relatively thin wall.

The tubular member 7 is formed with an inwardly extending flange 11 at its lower end. A washer 12 placed within the tubular member 7 rests upon and is supported by the flange 11, which is turned upwardly slightly along its edge. A link 13 formed of material having spring qualities and havin its remote walls reduced at i l-14 to Washer 12 is placed in the position illustrated in Fig. 1. This is accomplished by moving the ends of the link 13 together and then inserting the link within the tubular member 7 at the upper end thereof, wherefore the spring quality of-the link will maintain the same in the position shown. It will be understood that a chain or the like (not shown) is connected to the link 13 to depend therefrom. A lighting fixture or the like will be supported by such a chain.

The tubular member 7 has an opening 16 in its side wall adjacent the upper end thereof. A curved guiding clip 17 that has in general an oblong shape is formed, as best seen in Fig. 3, and is arran ed to enter the opening 16 until the end thereof contacts with the opposite inner wall of the tubular member. A guiding clip 17 is formed with an extension 18 adapted to extend upwardly along the tubular member 7 exterior of the opening 16. The extension 18 has an opening 15 therethrough and consequently the guiding clip 17 is maintained in a fixed position relative the tubular member 7 in the preferred form of the device by the pin 8, which is projected through the opening 15 prior to its insertion through the registering openings 9 and 10.

Electrical conducting wires 19 are projected into the tubular member 7 through the open lower end thereof and are guided therefrom by the guiding clip 17 through the opening 16 into position suitable for operative connection with the wires (not shown) that are ordinarily installed in the wall 2. A canopy 20 is slidably disposed on the tubular member 7 and is secured in adjusted position therealong by means of a set screw 21.

From the foregoing description of the various parts of the device, the operation thereof may be readily understood, and requires no detailed explanation. The device comprises relatively few parts and is therefore capable of being manufactured with economy in time, labor and material. At the same time, the device comprises all parts necessary for the efiective functioning thereof in ordinary service and in its assembled condition has the appearance of a more complicated and expensive electric fixture. Referring now to Fig. 2, I show a modified form of the device. Like reference numerals have been applied to like parts throughout need notbe insulated in the service for whichintended or for engagement with any suitable fittlng, (none being shown,) such as an ordinary insulating joint or the like.

The tubular member 7 is fitted'on the lower portion of the tubular metallic member 30 and is secured in fixed relation thereto by means of the pin 8 that is projected through registering openings 9 and 82 in the walls of 'the lower tubular member 7 and the upper tubular metallic member 30.

In the modified form of the device illustrated in Fig. 2, a guiding clip 33 is arranged within the bore of the tubular member 7 in the manner described and has an extension 34 arranged exterior of the opening 16, as shown, such extension being maintained in adjusted position relative the tubular member 7 in any suitable manner, as by being soldered to the wall thereof.

Referring now to Fig. 1, it will be noted that I may dispense with the washer 12 when the stress incident to the service for which the modified form of the device is intended will not be sufficient to overcome the resistance of a flange 40, which consequently need not be turned upwardly at its edge. A U-shaped link 41 having spring qualities has the end portions thereof inserted within the lower ends of the tubular member 7 and are provided with kerfs 42-42 in the remote walls thereof adapted to engage at diametrically opposed points the flange 40. On account of the spring qualities of the material composing the U-shaped link 41, the latter will be maintained in a fixed position relative the stem 7. The operation of each of the modified forms of the device as illustrated in Figs. 2 and 4, is identical with the operation of the preferred form of the device illustrated in Fig. 1 and consequently no detailed description of the operation of the modified forms is required.

I claim:

1. In an electric fixture of the type described, a fixed support, a tubular insulating member having diametrically opposed openings through its wall adjacent the lower end thereof, means for securing said tubular insulating member to the fixed support, a second tubular member arranged to incase the lower portion of said tubular insulating member and to depend therebelow, said second named tubular member having diametrically opposed openings through its walls adjacent the upper end thereof arranged to register with said first named openings, having an aperture through its side wall at a spaced distance below said first namedopenings and being formed with an inwardly extending flange at its lower end turned upwardly at its edge, a guiding clip disposed within the bore of said second named tubular member and having a p'ortion extending through said second named opening and arranged to lie along the outer wall of the second named tubular member, said extension being formed with an opening registeringwith said openings through the insulating member and the first named openings through said second namedtubular member, a pin projected through said registering openings to maintain said second named tubular member in fixed rela-' tion with said tubular insulating member and said guiding clip in adjusted position relative the-second named tubular member, a washer disposed within said second named tubular member and supported" by said flange, a link projected within the bore of said second named tubular member and hav-' ing a reduced portion thereof depending below the lower end of the latter, said link being supported by said washer, electrical conducting wires arranged to enter said sec- 0nd named tubular member and guided by said guiding clip through said aperture in the side wall thereof.

2. In an electric fixture of the type described, a fixed support, a stem comprising an upper tubular member secured to the fixed support, a second tubular member incasing the lower portion of said first named tubular member and depending therebelow, said second named tubular member being formed with an opening through its wall adjacent the upper end thereof and with an inwardly turned flange at its lower end, means for securing said second named tubular member in fixed relation with said first named tubular member, electrical conducting means arranged to enter the lower end of said second named tubular member, means for guiding said electrical conducting means through the opening in the side wall of said tubular member, and a link partly disposed within the lower end of said second named tubular member and supported by said inwardly turned flange, said link being suitable for supporting a light ing fixture element.

3. In an electric fixture, a fixed support, a tubular insulating member having diametrically opposed openings through its wall, a second tubular member arranged to incase the lower portion of said tubular insulating member and to depend therebelow, said sec- 0nd named tubular member having diametrically opposed openings through its walls adjacent to the upper end thereof arranged to register with the first named openings and having an aperture through its side wall at a spaced distance below said registering openings, a guiding clip disposed within the bore of said second named tubular member for guiding a flexible member through the lower aperture, said clip being provided with a portion extending through said lower aperture and arranged to lie along the outer wall of the second named tubular member, said extending portion having an opening therethrough adapted to register with the said registering openings, and means projected through the registering openings for maintaining the said elements in assembled position.

4:. In an electric fixture of the type described, a stem embodying a tubular member having an aperture through its wall at a spaced distance from one end thereof, means for supporting the tubular member, a guiding clip disposed within the bore of the tubular member and arranged to extend obliquely across the bore in position to guide a flexible member from the bore through the aperture, said clip being formed with an extension arranged to project through the aperture and bent to lie close to the outer wall of the tubular member, and means for securing the extension in adjusted position relative to the tubular member.

FRANK LOWELL BUTLER.

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