USRE15737E

USRE15737E - Sheave

Info

Publication number: USRE15737E
Authority: US
Publication date: 1923-12-25

Description

M. E. NEENAN Dec. 25. 1-923.

SHEAVE Original Filed Aug. 1

v ATTORNEY in Sheaves, of

-Reissue d Dec. 25, 1923.

UNITED; STATES PATENT OFFICE.

MIOHA'EL E; NEENAN, or NEW Yonx, N. Y., lassrenon fro NEENAN ELEVATOR COR- PORATION, ncoaronarron on NEW YORK. C

- SHEAVE.

Original in. 1,4 42,899, dated a citizen of the UnitedStates, and a resident of the city of New York, in the county of -New York and State of New York, have invented certain new and useful Improvements specification.

V The invention relates to improvements in sheavesapplicable toielevator utilities, having associated therewith a radially disposed fiber peripheral traction tread arranged to receive ropes and cables of any material which latter forms their own grooves on frictional engaging surfaces Oneobject'of the invention is the provid ing of a peripheral traction tread for sheaves or like articles of manufacture, made up of a plurality of twisted tarred fiber portions or other like material radially disposed with relation to the axis of the sheave, and per.- Inanently pressed into position upon the reception drumof said'sheave by means of a locking'orclamping plate in order to insure. an. 1ncreasedtract1ongripping and wear resisting surface.

Another object of the invention resides in the fact, that by providing a traction tread of the type as set forth, that cables and other like units of sustenance, wear or cut their own grooves or channels therein,-

and by reason of the difference in material,

retard wear and injury to the engagingfaoes of the units, and further a. traction tread that when worn out, and requiring readjustment,suc'h parts may be discarded and an entire new tread supplied at very little cost and trouble.

In the following is described in connection with the accompanying drawings, one embodiment of the invention, the features thereof being more practically pointed out hereinafter in the claims.

In the drawings, 1 is an end view of a sheave part thereof being shown in vertical sectional view illustrating the invention after the grooves have been cut thereinby reason of the engagement therewith of cables, ropes, etc.; Fig. 2 is a detail vertical sectional view of the sheave and fiber frictional treadillustrating the disposition of the units of materialcomprised in said tread and Fig. 3 'i an elevation of a sheave part of its edge being broken away to show the, pe-

January 23, 1923. Serial No. 492,896, filed August 17, 1921. reissue filed May 28, 19 23. Serial No. 642,125.

which the following is a- Application for ripheral tread of fibrous material applied thereto.

Similar numerals of reference indicate I similar parts throughout the several views. In the drawings 1 designatesfthe body of a sheave comprising a sleeve Zoom 2 having formed therein an aperture 3 arranged toreceive a shaft and a series of spoke 4 carrying at their outer ends a female drum 5 provided at its edge with a channeled shoulder 6.- The inner wall of shoulder 6 1s tapered inwardly at 7 toform a reception housing for the peripheral fiber tread.

8 indicates a locking plate provided with a channeled shoulder 9 and a tapering wall 10 to form the outer side of the sheave channel 11.

' 12 designates a multiplicity of fiber ro'e' .ends, set on their respective ends on t e housing formed by the female drum 5 and thetapered innerwalls 7 and 10 pf the cable housing or channel 11', and when said fiber ends are properly disposed thereon, a series of boltsl3 are inserted in holes, 14 and nuts -15 placed thereon, and the plate 8 is forced inwardly to a proper tension, the compression created by seating said locking plate 8 causes the fibrous fillers to become a compact hardened tractional tread, with a flush -wear -resisting surface 16. Said surface 16 within channel 11 is depressed between the respective shoulders of the sheave, thereby providing guides for the units in operative connection therewith. The action on said tread by cables, ropes or sheave actuating units, form in said peripheral tread grooves 17 in which said units run untilthe fibrous filler is worn out or destroyed, at which time an entire new tread may be inserted with a minimum of time and expense.

The twisted tarred fiber rope ends disposed on the body of the sheave as above described, constitute in effect a tread portion for the sheave, composed solely of a mass of separate individual fibers extending lengthwise of each other side by side, which tread portion presents a flush, wear resistant, tractive surface composed solely of the outer ends of the fibers. The tar of the rope ends forms a viscous binder which permeates the -mass of fibers, so that when the fiber mass is clamped between the shoulder and the locking plate of the reception housing, it will become compacted into a hardened tractional tread body of such character that the cables or ropes in their action on the flush wearresistant surface, will form the peripheral tread grooves 17 before alluded to, whereby the ropes or cables willbe grip..

comprising a sheave supporting body, a re-- cept'ion drum [formed thereon, a series of twisted tarred rope ends set radially to the axis of said drum adapted to form a peripheral traction tread therefor, and a locking plate mounted on said drum and engag- ,ing said traction tread arranged to hold said tread in position thereon.

2. A device of the character described including a peripheral ,traction tread' for sheaves, compnsing a plurality of twisted tarred rope ends disposed radially with relation. to "the axis of said sheave, a reception drum formed on said she-ave adapt-' ed to receive said tread, and a locking plate mounted on said drum and engaging said tread adapted to compress said tread into substantially a solid fibrous mass into which a plurality of cables may form a plurality of grooves. v v v 3. A sheave provided with a tread portion composed solely of separate individual fibers extending lengthwise of each other side by side substantially radially of the sheave A and confined on the periphery of the sheave as a unitary body, and presenting a flush, wear resistant, tractive surface, .composed solely of the outer ends of the fibers.

the sheave, with their 4. A sheave provided with a tread portion "composed solely of amass of separatein dividual fibers extending lengthwise of each other side by side radially of the sheave, the said mass of fibers being confined on the sheave as a unitary body, and presenting a flush, wear resistant, tractive surf-ace, composed solely ofthe outer ends of the fibers.

5. A sheave consisting of abody portion having a peripheral supporting surface and provided with 'a' tread portion composed solely .of a mass of individual separate fibers extending lengthwise 'of each other side by side radially of the sheave with their inner ends seated on said supporting surface, and their outer ends presenting a flush, wear resistant, tractive surface com posed solely of the outer ends of the fibers.

6.. A sheave provided with a tread'portion composed solely of an aggregationof separate individual fibers extendin lengthwise of' each other'sideby sidera iallyof the sheave and compacted into a hardened mass presenting a flush, wear resistant, tractive surface composed solely of the outer ends of the fibers. j 7. A sheave provided with a tread portion composed of a mass of separate individual fibers and apermeating viscousbinder, the

said fibers extending lengthwise of each other side by side radially of the sheave and confined fixedly on the periphery of the sheave as a unitary body, and presenting a flush, wear resistant, tractive' surface, com posed solely of the outer ends of the fibers.

8; A sheave provided-.with a peripheral tractive portion composed of a mass of fibers madeup of a series of bundles of individual fibers extending substantially radially of I outer ends presenting a tractive surface.

- MICHAEL-E. NEENAN.