US402221A - Split pulley - Google Patents

Description

(No Model) H. BAUTE.

SPLIT PULLEY.. v

Patented Apr; 30, 1889..

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" UNITED ST TES PATENT OFFICE.

'I'IENRY BAUTE, OF BENTON HARBOR, MICHIGAN.

SPLIT PlJLLEY.

SPECIFICATION forming part of LettersPatent No. 402,221, dated April 30, 1889. Application filed August 13,1888. $erial No. 282,562. (No model.)

To all whom it may concern.-

Be it known that I, HENRY BAUTE, of Ben: ton Harbor, in the county of Berrien and Stateof Michigan, have invented certain new and useful Improvements in Split Pulleys;

and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which formpart of this specification, in which Figure lis aface View of my improved split pulley. Fig. 2 is a cross-section of the same.

Fig. 3 is a vertical sectional View through one of the pulley-sections.

This invention is an improvement in split pulleys; and its objects are to improve the construction of the pulley-sections and to pro-- posite sections of the pulley. Section A has a transverse spoke-bar, C, which connects the opposite ends of its rim-section a, and o is a spoke connecting the central portion of bar 0 with the central portion of rim-section a.

Section B has a similar transverse spoke-bar,

D, and spoke (Z united. to its ri1n-section Z), as shown.

In the inner face of spoke-bar C and centrally thereof is formed a rectangular recess, E, and c is a similar but opposite recess in bar D. hen the pulley-sections are united, the shaft would pass through the opening formed by said. recesses.

F F are lugs projecting from. the inner face of bar D at the ends of recess (2, and ff are shoulders formed in the inner face of bar 0 at the ends of recess E, which lugs F F engage when the pulley-sections are united. G G are lugs projecting from the inner face of bar 0 outside of the shoulders f f, and engaging corresponding shoulders or recesses, g g, in the inner face of bar 1), as shown. The spoke-bar D is widened between its lugs F and shoulders g, as shown at H H, and bar 0 is widened between its lugs and shoulders f,

as shown at i 2'. Through the widened portions of the bars are made transverse openings J J, which coincide when the pulley-sections are brought together, and through these openings pass uniting-rods K K, the outer ends of which are screw-threaded and engaged by nuts 7; k, which, when the parts are properly adjusted, draw the bars C D toward each other'and firmly unite the sections.

L L are similar bushing-blocks inserted in recesses E 6 before the rods are tightened. The inner faces of these blocks are longitudinally ovally concaved, and when bound upon a shaft within the sections they will bite the shaft at two diainetrically-opposite points. As the are of the oval concave is much greater than the circumference of any shaft that could be inserted through the opening formed by recesses E e, and the opposite inclination of the extremities of the concave surface would cause the shaft when the blocks are bound thereon to ride up to the exact center of the blocks, (which is the exact center of the pulley on the parting line thereof,) the pulley can be centered exactly on different sizes of shafting; but to do this I employ packingblocks or sheets M M, which are inserted between the backs of blocks L and the insure accurate joints of the rim of the pulley, and they also relieve the rods of any lateral strain and prevent the sections being thrown eccentric to each other by the strain of the belt in starting and running, thus serving a very important function, so that the only strain on the rods is that necessary to draw the sections together on the diametrical line of parting. By having but the two points of contact between the two bushing-blocks and the shaft, and these points being diametrically opposite each other, less strain is necessary to firmly bind the pulley to the shaft than where there are four or more points of contact between the bushings and shaft, and there is less liability of the uniting bolts or f and g, and lugs G and F, to prevent disf g, and having opposite angular recesses in placement of the sections when. united, and the uniting-rods and nuts for said sections, substantially as specified.

2. In a split pulley, the combination of the opposite sections having transverse spokebars 0 D, united to the rim-sections near the ends thereof and provided on their meeting faces with engaging-lugs G F and shoulders their meeting faces, with the ovaled faced bushing-blocks L in said recesses, and the uniting-rods, substantially as specified.

3. In a split pulley, the combination of the opposite sections having recesses E e, for the passage of the shaft in their meeting faces, with the bushing-blocks L L in said recesses, having oval concaved faces, and the packingblocks M M, placed in recesses E (2 below blocks L, and uniting-rods and nuts, all sub- 1 stantially as described. i

I. The combination of the opposite sections having transverse spoke-bars formed with recesses E e in their meeting faces for the passage of the shaft and having engaging-1n gs G F and shoulders f g, substantially as described, with the uniting-rods and nuts, and the ovaled concaved faced bushing-blocks L in the recesses of the bars, and the packingblocks M M therein, substantially as set forth.

5. The combination of the opposite pulleysections having transverse spoke-bars formed with central angular recesses, and with pairs of engaging shoulders and lugs on their meeting faces and widened between said shoulders, and lugs on opposite sides of the central recess, with the oval concave-faced bushingblocks mounted in said recesses, the packingblocks therefor, and the uniting-rods passlng through openings in the widened portions of the spoke-bars, and tightening-nuts thereon, all constructed and arranged substantially as described.

In testimony that I claim the foregoing as my own I affix my signature in presence of two witnesses.

HENRY BAUTE.

Witnesses:

THOMAS MoNmsH, THOMAS FERGUSON.

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