US745633A - Lamp-hanger. - Google Patents

Description

PATENTED DEC. 1, i903.

No. 745.633. T. LINDSAY & L. L. WHITE.

. LAMP HANGER.

APPLICATION FILED FEB. 10. 1903.

No mmm.

INI /ENTORE ne: nous mns on.. matouvo.. wAslgnnG-rou. n c.

UNITED STATES Patented December 1, 1903.

PATENT OFFICE.

THOMAS LINDSAY AND LEoNAnD I.. WHITE, or wILMEnDINe,

PENNSYLVANIA. y

LAM P-H'ANG ER. p

srnoIFicArIoNforming para of Leners Patent No. 745,633, daten December 1, 190s.

Application filed February 10, 1901il Serial No. 142,704. (No model.) n

To all whom t may concern:

Beit known that we, THOMAS LINDSAY and LEONARD L. WHITE, citizensof the United States, residing at Wilmerding, in the county of Allegheny, State of Pennsylvania, have invented certain new and useful Improvements in Lamp-Hangersof which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to a lamp-hanger, and particularly to a construction embodying a spring-drum upon which the supporting-cable for the lamp is adapted to be wound.

The invention has for an object to improve the construction of this drum and also of the manner of mounting the casing upon the same, so that the cable when wound thereon will be retained in proper position to prevent twisting or interference of one strand with another.

A further object of the invention isgto provide a pivotally-mounted 'guide-roller above and below the drum, so as to convey the cable into proper alinement as it is successively Y is too great to be safely borne thereby.

Other and further objects and advantages of the invention will be hereinafter set forth, and the novel features thereof defined by the appended claims. f

In the drawings, Figure l is a central vertical section through the hanger; Fig. 2, a similar view upon the line 2 2 of Fig. l and at a right angle thereto; Fig. 3, a plan with the top casing removed; Fig. 4, an elevation showing the hanger and lamp supported by an independent cable from the conductingwire; Fig. 5, a detail perspective of one section of the drum, and Fig. 6 a similar view of the auxiliary cable wound with the strands of the conducting-wires.

the drum is formed with an inclined Wind ing-surface A8, having at its outer edge a ret-aining-ange A, and the two sections of the ldrum when joined form a structure conical in cross-section, upon one face of which the cable from below the hanger is wound and upon the opposite surface the upper cable.

The cable B is adapted to pass downward through an aperture B in one section of the drum, thence laterally through an aperture B2 to the opposite side thereof, said aperturesy together by a plate C3, through which the of rotation ofl the drum, a suitable bearingl surface Ci being providednpon the periphery of the drum for this purpose.

The winding-drum is inclosed within a casing formed of an upper and lower section supported from the shaft of the drum. The lower section D is provided Ywith bearing-boxes Dl at its upper portion secured thereto by suitable set-screws D2 and adapted to receive the ends of the drum-axle A5, while the lower portion of the casing D is provided with the usual opening D3 for the passage of the con? ducting cord B. The upper section D4 is formed at its upper end with an opening D5 and at its lower open end D6 is fitted over the upper portion of the lower section and adapted to fit around the screws D2, and thus `be held against rotation. By thus mounting the shell or casing the weight is borne by the axle and removed from the ends of the yoke within which the drum is carried.

The conducting-cable B, as herein shown,

is composed of two strands twisted together as usual for supporting incandescent lamps, such as indicated at B4, While twisted with these strands of conducting-cord is an independent supporting-cable B5, which extends for the length of the conducting-cord from the ordinary'fuse-box B6 to the lamp B4. This cable may be of any desired material of a Iiexible character and is secured atits upper endto a xed support B7, from which the weight of the hanger and lamp is borne, thus relieving the conducting-cord of the strain thereof. This supporting-cablemay be of small diameter and wound between the strands of the conducting-cord,so as not to increase the diameter of the cable upon the drum.

In the operation of the invention it will be seen that as the lamp is raised or lowered the cord is wound upon or unwound from the drum in equal amounts from each side thereof, while the arrangement of the inclined su rface to the drum with the pivoted guide-roller securesan accurate winding in a spiral path upon the surface of the drum. Theindependent supporting-cable removes the strain from the conducting cord, as hereinbefore explained, While the mounting of the casing or shell upon the axle of the drum supports the same in the most desirable manner to prevent interference with the feed of the supportingcable. It will be obvious, however, that the form of this casing may be altered and changes made in the details of construction and coniiguration of the invention without departing from the spirit of the same as defined by the appended claims.

Having described our invention and set forth its merits, what we claim, and desire to secure by Letters Patent, is-

1. ',In a lamp-hanger, a winding-drum having its periphery inclined in opposite directions and provided with a lateral aperture extending between the opposite lower portions of the inclined periphery, a supporting-cable extending through said aperture and adapted to be wound upon said drum from opposite lower portions upwardly toward the center thereof, and guide-rollers having frames pivotally mounted at the apex of the drum andupon the opposite sides thereof.

2. In a lamp-hanger, a winding-drum hav ing its periphery inclined in opposite directions, a supporting-cable adapted to be wound upon said drum and guide-rollers pivotally mounted in pivoted frames at opposite sides of said drum to swing in a plane parallel with the axis thereof to direct said cable into place upon the periphery of the drum.

3. In a lamp-hanger, a winding-drum having its periphery inclined in opposite directions, a supporting-cable adapted to be wound upon said drum, guide rollers pivotally mounted in pivoted frames at opposite sides t of said drum to swing in a plane parallel with the periphery of the drum.

4. In a'lamp-hanger, a winding-drum having its periphery inclined in opposite directions, asupporting-cable adapted to be wound upon said drum from opposite lower portions upwardly toward the center thereof, guiderollers pivotally mounted in pivoted frames at opposite sides of said drum to swing in a plane parallel with the axis thereof to direct said cable into place upon the periphery of the drum, a yoke supported from the axle of the drum upon which the frames of said guide-rollers are mounted, a friction-spring adapted to bear upon the periphery of the drum, a casing for said drum, and bearingboxes carried by the interior of said casing to surround the ends of the axle ofthe drum.

5. In a lamp-hanger, a winding-drum composed of opposite sections provided upon one face with a spring-recess and having an outer inclined periphery, a supporting-shaft for said drum, aspring within said recess secured at one end to the drum and at its opposite end to said shaft, a bearing-plate carried upona face of each section of the drum and resting upon said shaft, and retaining-anges Vat the lower portion of lthe inclined faces of the drum-sections.

6. In a lamp-hanger, a winding-drum having oppositely-inclined faces thereon and retaining-flanges at the lower portions thereof, a yoke surrounding said drum, guide-rollers at opposite sides of the yoke above the apex of said inclined portions, and a support-ingcable passing through said drum from the lower portion of one inclined face to the lower portion of the opposite inclined face.

7. In a lamp-hanger, a winding-drum having oppositely-inclined faces thereon and retaining-Hanges at the lower portions thereof, a yoke surrounding said drum, guide-rollers mounted in pivoted frames at opposite sides of the yoke above the apex of said inclined IOO TIC

portions, @supporting-cable passing through In tesbimony'whereof We affix ourl sgnasaidedrum from the lower portion of one intures in presence of two Witnesses.

@lined face to the lower portion of the oppo- THOMAS LINDSAY. site inclined face, a friction-spring supported LEONARD L. WHITE. by the yoke and adapted to bear npon the Witnesses:

apex of said drum, and a casing surrounding J. C. FOREMAN,

said drum. MARTIN STARK.

Images