US432965A - Electric-light fixture - Google Patents

Description

r (No Model.) 2 sheets-sheet 1. I E. II. ALDEIGH.

ELEGTEIG LIGHT EIXTUEE.

No. 432,965. Patented July 29. 1890.

-mz mams versus co., Pnoumo., wAsmNnTcN, n, c.

NITED STATES PATENT OFFICE.

FREDlI. ALDRlCI-I, OF CADILLAC, MICHIGAN.

ELECTRIC-LIGHT FIXTURE.

SPECIFCATION forming part of Letters Patent No. 432,965, dated J' uly 29, 1890.

Application filed September 16,1889. Serial No. 324,016. (No model.)

To all whom it may concern.-

'Ze it known that I, FRED lI. ALDRCH, a citizen of the United States, residing at Cadillac, in the county of VeXford and State of Michigan, have invented a new and useful Electric-Light Fixture, of which the following is a specification.

This invention relates to fixtures for electric lights; and it has for its object to provide a fixture which shall enable an incandescent light of ordinary construction to be conveniently moved to different parts of the room.

The invention consists in the improved construction, arrangement, and combination of parts, which will vbe hereinafter fully described, and particularly pointed out in the claims.

In the drawings hereto annexed, Figure l is a vertical sectional view of an electric-light fixture embodying my improvements. Fig. 2 is a horizontal sectional view of the same, taken on the line fr in Fig. l, parts being broken away for the purpose of showing the construction more clearly. Fig. is a View showing the parts comprising the invention separated from each other. p

Like numerals of reference indicate like parts in all the figures.

l designates a cylinder provided near its lower end with a horizontal circular disk or plate 2, which is firmly attached to the said cylinder, and which is provided at its outer edge with teeth or spurs 3, circumferentially arranged upon its upper side and at its outer edge. The cylinder l is provided with interior ribs or keys 5 to engage grooves G, formed in a shaft Y, to the lower end of which the incandescent-light fixture 8 is attached. The shaft 7 may thus be fitted in the cylinder l, so as to rotate with the latter.

9 designates a circular plate corresponding in size to the disk 2, and having at its outer edge a rim l0, which is exteriorly screwthreaded to engage the correspondinglythreaded lower end of a shell or casing 1l. The disks 2 and f), the rim l0, and the outer side of the cylinder l form a casing, in which is coiled a helical spring l2, the ends of which are attached, respectively, to the cylinder l and to the rim l0. The shell ll is provided with bearings 13 on its inner side for a vertically-sliding stem 14C, the lower end of which is provided with a catch l5, adapted to engage the teeth of spurs 3 of the disk 2. The stem 14 is forced in a downward direction by means of a suitablyarranged spring 16, and it has an arni or thumb piece 1.7, extending through a slot 1S in the shell ll, and by means of which the said spring-catch may be conveniently operated.

The insulated wire 19 ext-ends from thelightor bulb S through a vertical perforation 2O in the shaft 7, and thence through slots 2l in the said shaft and cylinder l into the casing or shelll l,where it passes over suitably-arranged guide-pulleys 22 and out through an opening 23 at the upper end of said shell and to the ceiling of the room, where it is made fast in the usual manner. A sufficient quantity of the said insulated wire is, however, first wound upon the cylinder l to enable the light to be carried to any part of the room in which it is located.

The upper end of the cylinder l is provided with an annular disk 2% to prevent the wire from slipping off the upper end of said cylinder, and a brace 25, arranged transversely in the upper part of the shell ll, is provided with a bearing for a spindle 2G at the upper end of the shaft 7. The said shaft is provided near its lower end with ashoulder27 adapted to bear against the under side of thc circular plate or disk 9.

The operation of this invention will be readily understood froin the foregoing description, taken in connection with the drawings hereto annexed. l.Vhcn it is desired to extend the wire for the purpose of lowering the light or carrying itto a remote part of the room, the thumb-piece is operated so as to release the catch l5 from the teeth or spurs 3. rl"he wire may then be unwound from the cylinder l, the spring l2 being at the same time wound within its casing. By releasing the thumbpiece 17 the springcatch l5 will again be caused to engage the teeth or spurs 3 andthe parts will be retained in the position to which they have been adjusted. In order to shorten or take up the wire, it is simply necessary to release the springe-(itch 15 from the teeth and to carry the light-fixture toward the point where the wire is made fast. The spring 12 IOO will then automatically rewind the wire upon the cylinder l.

While I have herein described what I consider to be the preferable construction of my improved electric-light fixture, I desire it to be understood that I do not limit myself as to the details of the same, but reserve the right to make any modifications which may be resorted to Without departing from the spirit of my invention.

Having thus described my invention, I claim and desire to secure by Letters Patent of the United States-H 1. The combination of a vertically-perforated shaft having a slot in one side, the electric-light xture at the lower end of said shaft, the conducting-Wire extending through the perforation and slot in the latter, and spring- 'actuated mechanism for automatically winding the wire around the said shaft, substantially as set forth.

2. The combination of a vertically-perforated shaft having a slot in one side, an electric-light fixture at the lower end of said shaft, the conducting-wire extending through the perforation and slot in the latter, spring-actuated mechanism for automatically winding the wire around said shaft, and a sprin g-actuated catch to arrest said Winding mechanism at any desired point of adjustment, substantially as set forth.

3. The combination of a shell or casing, a rotating cylinder arranged within the same andhaving an annular toothed disk, a springcatch to engage the latter, a plate secured to the lower end of the said shaft by an annular screw-threaded rim, a helical spring arranged in the casing thus formed and having its ends attached, respectively, to the cylinder,` and to the screw-threaded rim, a shaft arranged Within and keyed to the cylinder and carrying an electric-light fixture at its lower end, the conducting-Wire extending through a Vertical perforation in the shaft and through slots in the latter and in the cylinder, upon which latter it is wound, guide-pulleys arranged within the shell or casing, and an opening at the upper end of the latter for the passage of the said conducting-Wire, all arranged and operated, substantially as and for the purpose herein set forth.

1l. In an electric-light fixture, the combination, with a slotted cylinder, of a surrounding rotating shell or casing having an opening for the passage of the conducting-Wire andinteriorly-arran ged guide-pulleys for the latter, and spring-actuated mechanism for rotating the said shell to wind the conducting-wire upon the said cylinder, substantially as and for the purpose set forth.

5. In an electric-light fixture, the combination of the shell or casing having an opening for the passage of the conducting-Wire, interiorly-arranged guide-pulleys for the latter, and atrausverse brace, an in teriorly-arran ged cylinder having a flange at its upper edge and provided near its lower end with an annular disk having a circuinferentially arranged series of teeth or spurs, a spring-actuated catch arranged within said shell to engage the said teeth, a helical spring having its ends secured to the said cylinder an d to a rim secured in the lower end of the shell, a shaft arranged within the said cylinder having a spindle j ournaled in the transverse brace of the upper end of the shell and carrying an incandescent-light bulb at its lower end, and the conducting-wires passing through a vertical perforation in said shaft, through slots in the said shaft and cylinder, over the guidepulleysin the shell, and through the perforation at the upper end of the latter, substan tially as and for the purpose herein shown and specied.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses. A

FRED H. ALDRICH.

Vitnesses:

JAMES E. HENDERSON, SAMUEL F, LONG.

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