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Publication numberUS322515 A
Publication typeGrant
Publication dateJul 21, 1885
Filing dateMay 12, 1885
Publication numberUS 322515 A, US 322515A, US-A-322515, US322515 A, US322515A
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
John young
US 322515 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

(No Model.)

J. YOUNG. APPARATUS FOR SUSPENDING ARC LAMPS. No. 322,515. Patented July 21, 1885.

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SPECIFICATION forming part of Letters Patent No. 322,515, dated July 21, 1885.

Application filed May 12, 1885. (No model.)

invented a certain new and useful, Improvement in Apparatus for suspending Arc Lamps, of which the following is a full, clear, concise, and exact description, reference being'had to the accompanying drawings, forming a part of this specification.

My invention relates to suspending electric arc lamps; and it consists in a drum around which the flexible conductor which supports the lamp is wound, a cord wound about the r 5 central portion of the drum, apawl-aud-ratclr et device operated by the cord, and means for maintalmng the circuit through the bearings of the drum between the exterior circuit and the portion of the circuit included in the flexi- 2c ble conducting-cords.

My invention is illustrated in the accompanying drawings, in which Figure 1 is a perspective view of my device. Fig. 2 is a detailed sectional view upon line 00 x of Fig. is a detailed view showing the manner of maintaining the circuit between the outside wire and the suspending conductor.

Like parts are indicated by similar letters of reference in the different figures.

The wires a and I) are portions of the main circuit on different sides of the suspending device.

The conducting cords or cables 0 and d are 5 attached, respectively, to the hooks of the 0 ported by the metallic brackets f g, which are screwed to the support 71-, attached to the ceiling. 7

The cord 2' is wound about the central portion of the drum in the opposite direction 5 to that of the suspending-conductors c and (I,

so that when the cord iis pulled down and turns the drum, the conducting-cables c and (I will be wound up, thus raising the lamp.

The pawl k is held toward the ratchet Z by The drum is thus held from turning back. The arm 7.: of the pawl eX- tends downward, as shown.

By pressing the cord against the arm as the arm is pulled down the pawl will be lifted from engagement with the ratchet Z, permitting the drum to turn, thus winding up the cable and raising the lamp suspended thereby.

I11 order to lower the lamp it is only necessary to press the cord against the arm sufficiently to disengage the pawl, and, holding onto the cord, allow the lamp to descend, its weight being sufficient to turn the drum against the slight tension of the cord.

The drum is preferably smaller at the cen ter,which. receives the cord, than at the ends, which carry the cable. A greater length of cable is thus wound or unwound at each revolution of the drum than of the cord.

I provide a longitudinal groove, 0, in the drum for the cables. Each cable is thus carried outwardly from the center, and electrically connected with the metallic caps 12 1), as shown.

I claim- 1. In a device for suspending electric arc lamps, the combination of a drum around which the flexible conducting-cables which support the lamp are wound, the metallic caps through which current passes to the cables, and the cord-and pawl-andratchet device for raising and lowering the lamp.

2. A support for electric arc lamps consisting of a drum upon which the cables are wound, the cables to which the lamp is atattached,electrically connected with the main circuit through the metallic brackets f g and plates 1) p, the said brackets and plates, and. the cord and pawl-and-ratchet device by which the lamp is raised and lowered or held in any desired position, substantially as and for the purpose specified.

3. In a support for electric arc lamps, the combination of a drum smaller in the center,

'where the cord for raising and lowering the lamp is wound, than at the ends, where the conducting-cables are wound, the said cord,

and the pawland-ratchet device operated by the cord, whereby the lamp may be raised or lowered or held in any desired position.

In witness whereof I hereunto subscribe my name this 9th day of May, A. ,D. 1885.





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US5280880 *Jul 18, 1991Jan 25, 1994Kone OyUnitary hoist drum for hoist ropes and an electric cable
US5448853 *Mar 7, 1994Sep 12, 1995Harman; Benjamin J.Plant growing apparatus
US5551658 *Aug 15, 1994Sep 3, 1996Chief Manufacturing, Inc.Projector lift system
US6073892 *Jun 11, 1996Jun 13, 2000Chief Manufacturing, Inc.Modular projector lift
US6585214Mar 28, 2001Jul 1, 2003Chief Manufacturing IncorporatedExtended travel lift mechanism for a flat panel display
US20070176524 *Dec 12, 2006Aug 2, 2007Plano Anders IStorage system with storage container and supporting framework
Cooperative ClassificationF16M13/00