US443268A - Pulley - Google Patents

Description

(No Model.) 2 sheets-sheet 1. V. W. CODDINGTON.

PULLB/Y.

No. 443,268. Patented Deo. 23, 1890.

Witnesses: Inventor: l 'fww E@ M -m (No Model.) 2 Sheets-Sheet 2A v. woobmmToN. PULLBY.

No. 443,268. Patented Deo. 23, 1890.

Y'esses: l l i. Inventor: l l 3.00m@ a f@ mM/y l A UNITED STATES PATENT EErcE.

VANTYIIE IV. CODDINGTON, OF KANSAS CITY, MISSOURI.

PU LLEY.

SPECIFICATION forming part of Letters Patent No. 443,268, dated December 23, 1890.

Application tiled January 2, 1890. Serial No. 335,579. (No model.)

l" 0 all whom it may concern:

Be 1t known that I, VANTYLE W. CoDDrNG- TON, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Pulleys; and I do hereby declare that the following is a clear means for clamping pulleys having either radial spokes or a solid web and similar shaft attachments firmly to a central shaft, and also to enable the separable parts of the hub to adjust themselves to any distortion of the shaft-opening which may occur through the act-ion of the clamping-rods, thus forming a perfect bearing upon all sides of the shaft.

My invention consists in the novel construction and combination of parts, which will iirst be fully described, and specifically pointed out in the claims.

In the drawings, Figure l is a View in perspective of a web-pulley clamped to the shaft by means of the detachable clamping-spokes and separable hub, showing in dotted lines the position of the inner ends of the clamping-spokes when shifted by the action of the clamping-rods. Fig. 2 is a side View of a separable spoked pulley, showing the invention applied thereto. Fig. 3 is a view in perspective of the separable spoked pulley, as seen in Fig. 2, showing the separable hub and a portion of the shaft removed and in alignment with the hub-opening. Fig. I is a view in perspective of a web-pulley, showing alternate means for clamping the same to the shaft. Fig. 5 is a vertical sectional view of Fig. l, showing the spokes upon one side of the web only.

Similar letters of reference indicate corresponding parts in all the figures.

In the construction of my invention as shown in Fig. l, A represents a web-pulley, the web a of which extends from the inner side port-ion of the periphery the required diameter of the pulley, and is provided with a transverse opening a2 in line with the axis of said pulley to receive and fit loosely the shaft C. Around shaft C, contiguous to one side of the web a', is a close-fitting hub or bushing B, which is made with the circular opening Z) extending in the line of the axis of said hub and of the same radius of curvature as shaft C. The said hub or bushing is separated into four parts b b' b b', each part covering a segmental portion of the surface of said shaft. The outer side portion of each part b of the hub B is cut in aplane in the longitudinal direction of the shaft, each one of which planes is of corresponding extent, and together constitute a series of bearing-faces h2. From the face portion b2 of each separable portion of the hub B, extending an equal distance and radially to the circumference of shaft C, is a series of adjustable spokes D D D D, the contiguous end portions of which spokes bearing upon the faces b2 of the parts b of the hub B are squared and correspond in width in the longitudinal direction of shaft C to that of the faces b2 of said parts b of the hub. The other end portion of each spoke D is cut away in opposite directions and at a corresponding angle to the radius of the shaft C, so as to form inclines or shoulders d3 d3, which slope or incline inwardly. Extending through adjacent spokes D D and their shoulders d3 d3, which are in line and in one direction both above and below the shaft C, are made in parallel lines the perforations d4 di. Through the other shoulder d3, in line with each other and in a direction at right angles to the perforations d* d4, are made the registering perforations d6 d and (Z7 (Z7. Through the perforations d4 d4 are inserted the separable clamping-rods ffff. Upon one end of each rod is a head f 0, and the other end screwthreaded andprovided with the adjustingnut f3. Through the registering perforations (ZG d dT d7 are inserted the separate clam pingrods f f 2, each one of which rods is provided with ahead fo at one end and screw-threaded at the other, and to which end is fitted an adjusting-nut In a transverse direction to and through each one of the spokes D, in the direction of the web o. of the pulley, is made a longitudinal slot di. Through the slots d* and into the web a are inserted the screw-threaded ends of the bolts ha, the other ends of which bolts are provided with bolt-heads in the usual manner.

In Figs. 2 and 3 I have shown a spokcd ICO pulley in which the spokes are also a. constituent part of the means for clampingl the pulley to the shaft. In said gures the periphery of the pulley is separated into two parts, and the means for clamping the spokes to the shaft are the same as in Fig. l, the spokes G G in said Figs. 2 and 3 being extended to the periphery of the pulley. In said Figs. 2 and 3 I have shown the web in a modified form, as at l I', extending from the inner side portion of the periphery a short distance in the direction of shaft (l and increased in the line of the spokes (l. Through the ends of each one of the spokes G near said periphery is made the radial slot 71, in line with said web, to receive said extended portion of the web.

ln the application of the invention to webpulleys shown in Fig: et, l may dispense with the clamping-rods ff in 011e direction, and in their place attach to the web fixedly, or to the periphery, as preferred, on both sides of shaft C, the spokespreading blocks A A`, which extend between the outer adjacent ends of the spokes D D, which are clamped by the rodsf f2 and retain said spoke the proper distance apart. The corner portions et@ of said ends are eut away in acorresponding degree to the inclination of the sides of spokes D, upon which portions the spokes bear and have free movement. Said blocks A A? eX- tend to the rods f j 2, but all that is necessary is to afford the bearing for the spokes D l).

In securing the pulleys to the shaftthe several parts of the hub are placed upon the shaft in regular order first the separate parts b and then the spokes D-the clamping-bolts inserted, and the nuts turned on the rods j f" f2, so as to draw the bearing ends of the spokes on the faces lf2 in the direction of shaft C. In this operation the tightening of one clampinga'od has the effect to change the relation of the bearing-surfaces of the end of each spoke to the shaft, and bring to bear an unequal pressure upon each face of the separable parts of the hub, which parts slip around the shaftin the direction ofthe greatest pressure and adjust themselves to equalize the bearingvs,

1n Lig. l. l have shown in dotted lines the result of the action of the clamping-rods f fg, which distort the position of the lower ends of the spokes D D, the movement of which is resisted by the rods f f. To meet this distortion, as the separable parts of the hub slip on shaft (f the contiguous end por tions of the spokes which bear on the faces Ik ot' the separable parts Il of the hub also shift in position, and the pressure upon the shaft is made direct as the adjustments of the clamping-rods are successively made.

In clamping,` weh-pulleys to the shaft the slots d.X in the spokes permit the spokes to be moved withoutremoving-thefasteningserews.

Having fully described my invention, what I now claim as new, and desire to secure by Letters latent, isA

l. The combination, in a separable pulley, with the rim, of a series of radial spokes, a central shaft, and a hub or bushing on said shaft, composed of separable parts corresponding in nun'iber to said spokes, having the inner side portion of each part covering a portion of the surface of said shaft and its outer face portion in a plane longitudinal to said shaft, each one of said spokes havinga squared inner en d bearing upon one face of said bushing" and each spoke having opposite shoulders, clamping-rods in registering perforations of said spokes, and ad j listing-nuts on said rods bearing upon said shoulders, substantially as and for the purposes described.

2. A pulley having shaft-clamping parts, consist-ing` of a series of radial spokes adjustably clamped together in sets, and radial spoke-spreading blocks extending between said adj ustably-clainped spokes, substantially as and for the purpose described.

VANTYLE CODDIG'ION. \\'itnesses: l

S. L. C. Mossos,

M01-mis S. TowsoN.

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