US700517A - Lamp-hanger. - Google Patents

Description

No. 700,507), l l Patented'nay 20, |902.

T. LINDSAY 0 L. L, wHne.

LAMP HANGER.

(Application tiled Sept. 5, 1901.)

(No Model.)

0 l [NVE/vrom UNr'rJED( {SrArns PATENT OFFICE. e

THOMAS LINDSAY AND LEONARD L.l WHITE, or WILMERDING, PENN- lsvLvANIA.

LAMP-HANGER.

SPECIFICATION forming vpart of Letters Patent No. '7O,517, dated May 20,1902. Applioationfiled September 5, 1901. Serial No. 74,431. (No model.) v

T0 @ZZ whom it may concern:

Be it known that we, THoM-AsLINDsAY and LEoNARDlL. WHIrE,--citizens of the 'United' States, residing at Wilmerding, in the county of Allegheny, State of'lennsylvania, have in-` vented certain new and useful Improvements in Lamp-Hangers, of which the lfollowing is a specification, reference being had therein to" the accompanying drawings'.

This invention relates to `lamp-hangers, and@- particularly to a construction embodying a spring-drum adapted to have wound thereon the suspending device or cord for the lamp.

. The invention has for its object to provide means independent from the drum for guiding the winding of the supporting cord or device upon the drum in order to prevent the overlapping or entanglement thereof-in the raising or lowering movement of the lamp supported by the hanger.

A further object of the invention is to provide a spring-actuated guide adapted to move transversely to the face of the drum in order to place a constant tension against the cord-. as the same is wound upon thedrumlface,

causing the winding in a continuous? spiral line and avoids the necessity of any grooving of the face of the drum.

A further object of the invention is to profA` vide an improved meansforl supportingithe Winding-spring Within the body of thev drum.

\ Other objects and advantages of the inven-V tion will hereinafter appear inthe following description, and the novel featuresthereof willbe particularly pointed lout in the appended claims. i

In the drawings, Figure 1 represents a perspective of the invention with the inclosing" case removed. Fig. 2 is an end elevationV ing-wires form the supporting cordvor medium.

- The invention is further intended as an improvement upon Patent No. 669,283 of March` 5,1901, granted to! Thomas Lindsay, and is Aandv expensive construction of grooved drum by substituting therefor a drnmhaving au smooth periphery and an'improvedy form of guiding device which is'entirely independent ofthe movement of the drum.

g In the' drawings, the letterA represents a frame, which may be of any suitable' configuration and in the complete article is adapted to be inclosed in a casing. The opposite side members A of the frame are secured together by cross-bars A2 at their upper` and lower portions, while between these bars a spindle or axle A3 is held against rotation by the frame in any suitable manner-for instance, by means ofv a pin A5, passed through opposite lugs A4, formed on the side bars A', and

through an aperture in the end of the axle.

Upon-this axle a drum B is rotatably mountedv and visprovided with a continuous plain periphery upon which the supporting.. device for the lamp-is adapted to f be wound. In order to guide and dispose this supporting Vcord orf device -toathe ,center of the drum,` -th'e` ends of the side bars A are provided -withrollers A6, rotatably supported upon pins '-Ai, connectingvthe side jbars A', so` that the ,cordin approaching the drum is directed to `a centralposition lengthwiseof the drum. Itwillibe understood that one end of this -'cordjor suspending device is connected to a fxed support,while the opposite end sup- 'ports the lamp or device to be carried by the hanger, and the cord C is preferably a continuous piece andis passed through the drum in a line from one side to the diametrically opposite side, openings or apertures B being provided for this purpose atgthe edges,so that the winding movementzis'fromrthe outenedge of the drum inward upon both endsof the cord. j 1:' 'v 1 2 v In the winding of the cordit is desirable that each strand or winding should lie in-close contact with the preceding and adjacent one, so as to produce a continuous spiral winding IOO 55 adapted to'dispense with the more difficult to prevent the entanglement of the cords or the ovcrlappingof the same and to economize in the length or capacity of the drum necessary for any particular length of cords. The improved construction ot' guide for exerting a pressure upon the cord transversely of its length and of the drum B consists of the finger D, which may be segmental or of any other preferred configuration, and is slidably mounted by a collar D upon the crossbar A2 at each side of the drum, while surrounding this bar a spiral spring DL is disposed in order to normally press the guide toward one end of the bar, while the accumulation of the cord woundY upon the drum gradually forces the guide against the tension of the spring, thus producing the desired pressure to force each strand or Winding of the cord into contact with the adjacent one. This produces a structure entirely independent of the drum and obviates the necessity of the spiral grooving on the drum, which has not been found desirable in the use of a sheet-metal drum as herein illustrated. i

By reference to Fig. l it will be seen that the guides D move in opposite directions upon the two windings upon the drum in order that the strands of each Winding may be pressed toward the edges 'of the drum.

In order to provide a construction of winding-spring which will not interfere With the suspending cord or device or injure the insulation thereof when the electric conductor is used, a spider E is provided and supported Within the drum in any desired manner-for instance, by screws E passing through the drum. The spring E2 is secured at one end to the lip or lug E, carried by the spider and at its opposite end to the fixed axle or spindle .A3 ofthe drum, so that theunwiudingof the cord from the drum rotates the end of the spring carried bythe cage to place the spring under tension, and thus restore the parts to their initial position when relieved of the Weight of the lamp. The tension of this spring is varied or determined according to the Weight of the lamp or other device supported by the hanger.

From the foregoing description the operation of the invention Will be apparent, and it will be seen that in the beginning of the winding action upon the drum the cord' eX- teuds from the aperture B to the guide-rollers opposite the center of the drum, while the sliding guide D presses against the cord during the Winding movement, thus causing the same to be disposed in a spiral position with the strands in close contact with each other. In the unwinding movement of the cord the guide D follows the cord by means of the spiral spring D2, so that this guide is constantly in engagement with one side of the strand or cord to control and guide the Winding action of the same.

It will be obvious that changes may be made in tho details of construction and configuration Without departing from the spirit of the invention as defined by the appended claims.

Having described the invention, what is claimed isl. In a lamp-hanger, the combination with a spring-actuated drum, of a supporting-cord adapted to be wound thereon, a guide-finger independent from the drum and adapted to move longitudinally thereof, in contact with the cord wound thereon, and means independent of the drum for imparting yielding pressure ofthe guide-finger against the cord-Windings; substantially as specified.

2. In a lamp-hanger, the combination with a spring-actuated drum, of a supporting-cord adapted to be Wound thereon, a guide-finger independent from the drum and adapted to move longitudinally thereof, and a spring for normally forcing said guide toward one edge of said drum; substantially as specified.

3. A lamp-hanger comprising a frame, a spring-actuated drum `rotatably mounted therein, a supporting-cord Wound upon said drum, a cross-bar at one side of said drum, a guiding-iinger adapted to contact with said cord and slidably mounted upon said crossbar, and a spring for pressing said finger in one direction; substantially as specified.

4E. A lamp-hanger comprising a frame, a spring actuated drum rotatably mounted therein, a supportingcord Wound upon said drum, a cross-bar at one side of said drum, a guiding-linger adapted to contact with said `cord and slidably mounted upon said crossbar, a spring for pressing said nger in one direction, an opposite guide-finger upon the opposite side of drum, and a spring for pressing said opposite finger in the direction opposite to that of the first-mentioned nger; substantially as specified.

5. A lamp-hanger comprising a frame, a spring actuated drum rotatably mounted therein, a supporting-cord Wound upon said drum, a cross-bar at one side of said drum, a guiding-finger adapted to contact with said cord and slidably mounted upon said crossbar, a spring for pressing said finger in one direction, an opposite corresponding guidenger upon the opposite side of the drum, a spring for pressing said opposite finger in the direction opposite to that of the first-mentioned finger, and guide-rollers supported by the frame adjacent to the longitudinal center of said drum; substantially as specified.

6. In a lamp-hanger, the combination with a supportingdrum, a cord adapted to bc Wound thereon and passed therethrough, of a spider having arms adapted to be removably secured to said drum and carrying the outer end of the actuatingspring for the drum at a distance from the inner face thereof,a spindle for said drum to which the opposite end of said spring is secured, and means for securing said spindle against rotation; substantially as specified.

7. In a lamp-hanger, the combination with IOO IIC

specified.

a supporting-drum and cord adapted to be Wound thereon,of a spider havin g arms adapted to be secured to said drum and carrying one end of the actuatingspring for the drum at a distance from the inner face thereof, a spindle for said drum to which, the opposite end ofsaid spring is secured, a frame for said gers lidably mounted u pon said cross-bars, and

a coiled spring surrounding said cross-bars and adapted to forcesaid lingers toward the opposite ends of the drinn; substantially as 9. A lamp-hanger comprising al:'raine, a

.spring-actuated drum centrally ymounted therein, cross-bars at opposite sides of lsaid drum, a supporting-cord'extending from the opposite edge portions of saiddrum, guidefingers sli dably inountedupon said crossfbars,

a coiled spring surrounding said cross-bars and adapted to force saidngers toward the opposite ends of the drum, and'oppositelydisposed guide-rollers carried by` said frame at each side of 'said drum and at the longitudinal center thereof; substantially as specified.

In testimony whereof we affix our signatures in presence of two witnesses. x

THoMAs LINDSAY. i LEONARD L. WHITE.

Witnesses: l J. M. PoLLoCK, l ALBERT R. TREVAsKIs.

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