US705129A - Pulley. - Google Patents

Description

No. 7o5,|29. Patented July 22,- I902.

w-.-E. PENN. r

' PULLEY.

plication filed Oct. 9, 1901.)

(lo Model.)

I EEicE.

UNITED STATES PATENT WILLIAM E. PENN, OF LAKEMILLS, WISCONSIN, ASSIGNOR TO F. B. FARGO AND COMPANY, OF LAKEMILLS, WISCONSIN, A CORPORATION OF VIS- CONSIN.

P U L L EY SPECIFICATION forming part of Letters Patent No. 705,129, dated July 22, 1902.

Application filed October 19, 1901. Serial No. 79,202. (No model.)

T (0Z5 whom it m y COW/087%: cylindrical metal bushings D D are provided, Be it known that I, WILLIAM E. PENN, rewhich fit into the longitudinal axial recesses siding at Lakemills, in the county of Jefieror channels in the cross-pieces C and form son and State of Wisconsin, have invented a metal'walls in the cross-pieces about a cen- 55 new and useful Improvement in Pulleys, of tral axial aperture adapted to receive the which the following is a description, refershaft or arbor therethrough on which the pulence being had to the accompanying drawley is to be secured. These semicylindrical ings, which are a part of this specification. metal bushings are prepared of a common The object of my invention is to provide an and constant size adapted to receive therein, 60 1o improved construction adapted for readily with more or less intervening space, the shaft and securely fastening pulleys to shafts or or arbor. The amount of this space between arbors. the shaft or arbor and the interior surface of The invention is especially adapted to be the 'metal bushing will of course depend on employed with those pulleys that are prethe size of the shaft or arbor, these varying 65 pared and sold on the market to be put on a with the different mechanism with which the shaft or arbor by a farmer or dairyman at a pulley is to be used. For use within the semidistance from any accessible machine -shop cylindrical metal bushings D D and about the or where tools are not convenient except such shaft or arbor on which the pulley is to be as are ordinarily found with a farmers outfit. fixed Iprovide semicylindrical wood bushings 7o The invention consists of the devices and E E, having an exterior surface adapted to their combinations as herein described and fit closely and accurately in the semicylinclaimed or the equivalents thereof. drical metal bushings D D. The thickness In the drawings, Figure 1 is an end view of of these wood bushings, and consequently a pulley having my improved construction, the size or diameter of the interior space in- 75 parts being broken away to show interior arclosed by these wood bushings when they are rangement. Fig. 2 is a transverse section in position in the pulley and the members of centrally across its two members. Fig. 3 is a the pulley are clamped together, so as to form detail of a bushing employed in myimproved a complete pulley, must be such as to fill the construction. Fig. 4: is a detail of a wood entire space between the metal bushingsand 8o bushing that may be employed with my imthe shaft or arbor on which the pulley is to be proved construction, the bushing in Fig. 4- fixed. For this purpose Ipurpose to provide being adapted to be employed with a shaft or wood bushings of diiferent thicknesses, and arbor of a smaller size than the shaft or arbor consequently having axial or shaft apertures with which the bushing shown in Fig. would of varying sizes, so as to adapt them to fill the 85 be used. space between the varying sizes of the shaft My improved pulley is constructed in two and the metal bushings, and thus be adapted semicircular members A A, each consisting to assist properly in holding the pulley seof a rim B and a cross-piece C, the cross-piece curely and properly in place. These bushbeing secured to the rim at both its ends and ings are made of wood, because of the yield- 90 near to the two extremities of the semicircuing character of the material under pressure lar rim. The construction of the cross-pieces and because of its capability to adhere firmly and the rim is such that when the two meme to whatever it is pressed against, whereby bers of the pulley are placed opposite each such a bushing is especially well adapted to other in such manner as to makeia complete securely fasten the pulley to the shaft or 95 pulley in form and substantially as shown in arbor.

Fig. 1 the cross-pieces will be opposite and For clamping the two members of the puladjacent to each other when the ends of the ley and their metal and Wood bushings serim approach very closely to or abut against curely to a shaft or arbor I provide'U-shaped each other. The two cross-pieces are holclips F F, advisably made of round steel rod 10c lowed out in semicircular form opposite each and having screw-threaded ends on which are other about the axis of the pulley, and seminuts G G. These clips are so bent as to fit therefor through a cross-piece of one memthereby the thus-fastened member of the pulclosely on and about the semicylindrical metal bushings D D, and their legs pass in apertures ber of the pulley, and the nuts G G are adapted to turn on the legs of the clips against the cross-piece.

In use a Wood bushing E is placed on a shaft, for which purpose a wood bushing is selected that has a concave groove of the proper size to approximately fit the shaft, and a metal bushing, D is then placed on and about the wood bushing,and around this is-placed one or more of the clips F, the legs of which are then inserted through the cross-piece of one member of the pulley, placed on the opposite side of the shaft from the bend or yoke of the clip, the proper metal bushing and Wood bushing having been previously placed in the crosspiece about the shaft. Thereupon the nuts are turned down against the cross-piece, and

ley is held securely in place on the shaft. The other member of the pulley is placed in position on the shaft, the legs of a clip around the bushings in the first-secured member being inserted through the cross-piece of this second member and the member being secured in place by turning the nuts down on the legs I of the clip or clips. It will be noted that suitable semi-annular grooves or recesses H H are provided in the concave inner surface of the cross-pieces for the reception therein of the clips F F.

What I claim as my invention is A pulley, comprising two semicircular coinplementary members each composed of a rim, a cross-piece substantially diametrical of the rim and connecting the extremities of the rim the cross-piece having a concave axial recess, ametal semicylindrical bushing of unvarying size fitting into the axial recess of the cross-piece, and a Wood semicylindrical bushing fitting into the metal bushing, and also U-shaped clips let into the cross-piece of one member about its metal and wood bushings, the legs of the clips extending through the cross-piece of the complementary member, and nuts on the legs of the clips adapted to turn against the cross-piece of the complementary member.

In testimony whereof I affix my signature in presence of two Witnesses.

WILLIAM E. PENN.

- Witnesses:

L. F. ANDERSON, ORIN K. WIN EK.

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