US476303A - Pulley - Google Patents

Description

(No Model.)

J. L. POTTER. PULLEY.

' No. 476,303. PatentedJune 7,1892.

WITNESSES: mvmmn @msx M W w W I BY ATTOIR N EY me nomus PETERS co., mow-mum. WASNINGYDN D c UNITED STATES PATENT OFFICE.

JOSEPH L. POTTER, OF FORT WAYNE, INDIANA.

PU LLEY.

SPECIFICATION forming part of Letters Patent No. 476,303, dated June '7, 1892. Application filed May 14, 1891. Serial No. 392,780. (No model.)

To all whom it may concern:

Be it known that I, JosnPH L. POTTER, a citizen of the United States,residing at the city of Fort WVayne, in the county of Allen, in the State of Indiana, have invented certain new and useful Improvements in Pulleys; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawing, which forms part of this specification.

The accompanying drawing is a side View of the preferred form of construction of my pulley.

The construction is as follows: Two arms 3 and 4 are attached with two of their ends 7 and 8 near each other, preferably in contact, as shown, to the rim 5 of the pulley in such position that they are inclined from each other, preferably at an angle equivalent to that of an equilateral triangle. The opposite ends 9 and 10 of these fixed arms are attached at two other points, respectively, on said rims, preferably by dovetailing, as shown. The three points of attachment of said arms to said rim are preferably equidistant from each other, with the point of joint attachment opposite the removable section 2. Onehalf of the hub is attached or formed upon these arms, preferably integrally in two sections, as shown in the drawing, and there is a small space 11 cut out between the arms 3 and 4, extending down to the points of junction 7 and 8, so that when the bolt 17 is tightened it will have a tendency to draw the arms together at that place and clamp not only the shaft 14, but also have a tendency to draw the ends of the rim 5 firmly against and in engagement with the removable section 2. The removable arm 6, with the other half of the hub attached or formed thereon, preferably integrally, as shown, is so constructed that when placed upon the shaft 14, with the other parts of the hub, formed on the arms 3 and 4, there shall remain the spaces 13 and 14 between them, so that when the hub and removable arm 6 are drawn. down upon the same by the bolts 15 and '16 the shaft is not only firmly clamped thereby, but the ends 9 and 10 of the arms 3 and. 4 are drawn toward each other, carrying with them the V-shaped ends of the rim 5 against and in engagement with the removable section 2, thereby greatly assisting to firmly hold it in place. It will be seen by this construction that all the fastening and bracing rods 15, 16, and 17 perform, by reason of the spaces 11, 13, and 14, two functions. They not only clamp the hub firmly upon the shaft 14, but they also mutually aid each other in firmly clamping and holding the removable section 2, thus bracing the entire pulley. There the hub portions of these arms are not formed integrally, such hub portions may be attached to the arms in any way desired and in such manner as will readily occur to those skilled in the art; butI prefer the integral construction shown for all pulleys, not exceeding twenty-four inches in diameter.

The operation is as follows: The bolts 15 and 16 are removed and the cap 6 takenout. The bolt 1.71s loosened and the removable section 2 is removed. The pulley is then placed on the shaft, the cap, bolts, and section 2 are replaced, and the parts are firmly clamped together on the shaft by means of the bolts and the burrs, thereby clamping the shaft and bracing all parts of the pulley together in a new manner and with greatly-increased efficiency, while the construction of the parts is such as to preserve the equilibrium of the pulley almost perfectly.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a pulley having a non-continuous rim and a single removable section for the admission of a shaft, the combination of two arms adapted to form half of the hub, which arms are attached to three points or places in the rim, two of the ends of said arms being adjacent and the othertwo ends of said arms attached, respectively, in two other points or there being provided. the spaces 11, 13, and 14 16 places, and a removable arm adapted to form between the arms, and the bolts 15, 16, and. 17. the other half of the hub and with said fixed In testimony whereof I hereunto subscribe arms an equilateral triangle, and means to my name,in the presence of two Witnesses, this clamp the same upon the shaft. 3d day of March, 1891.

2. In apulley having anon-continuous rim JOSEPH L. POTTER. and a single removable section for the ad- Witnesses: mission of the shaft, the combination of tWo ALBERT BAKER,

arms 3 and 4, the removable arm or cap 6, l H. O. HARTMAN.

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