US442124A

US442124A - Latulip

Info

Publication number: US442124A
Authority: US
Publication date: 1890-12-09
Anticipated expiration: 1907-12-09

Description

UNITED STATES PATEN'i OFFICE..

FREDERICK LATULIP, OF SYRAOUSE, NE\V YORK, ASSIGNOR OF ONE-HALF TO GEORGE B. LEONARD, OAF SAME PLACE.

PU LLEY-COVERING.

SPECIFICATION forming part of Letters Patent No. 442,124, dated. December 9, 1890.

Application iled November 23, 1889. Serial No. 331,303x (No model.)

To @ZZ whom it may concern.-

Be it known that I, FREDERICK LATULIP, a citizen of the United States, residing at Syracuse, in the county of Onondaga and State of New York, have invented a new and useful Improvement in Pulleyoverings, of which the following is a specification.

This invention relates to pulley-coverings composed of rawhide. f

I-leretofore rawhide has been applied to the periphery of pulleys in the form of a flat band or strip with the ends of the band or strip overlapping each other or abutting against each other, and this band was secured by means of rivets which passed through the covering and the pulley-rim. This,however, is objectionable, as the shrinking of the rawhide tends to tear the covering where it is secured to the pulley-rim by the rivets, and also tends to V4open the seam or joint where the ends of the band meet.

The object of my invention is to overcome these difficulties; and my invention consists of a seamless tubular covering of rawhide which is attached to the periphery of the pulley, as hereinafter fully described, and pointed out in the claims.

In thc accompanying drawings, Figure l represents the rawhide disk as it is cut preparatory to being softened. Fig. 2 is a transverse section of a pulley, showing the rawhide disk placed against the side of the pulley preparatory to stretching the disk over the rim. Fig. 3 is a side elevation, partly in section, of a pulley provided with my improved covering. Fig. 4: is a transverse section of the pulley, showing one means for securing the covering. Fig. 5 is a similar section showing a :modified means for securing the covering on the pulley-rim.

Like letters of reference refer to like parts in the several figures.

A represents the pulley, which can be of any suitable construction, and ais the rim thereof, to the outer side of which the rawhide covering B is attached. The latter is formed and applied in the following manner: A disk of suitable diameter is cut from a piece of rawhide and provided with acentral opening O, so that the rawhide disk has inner and outer annular edges c d, respectively. This disk is softened by immersing it in hot water or some suitable chemical solution which will render it pliable and capable of being distended or stretched. It is then placed against one side of the pulley and axially in line therewith, so that the annular outer edge of the disk extends beyond the rim a of the pulley, as represented in Fig. 2. The outer annular edge is then stretched and drawn across the face of the pulley until a portion of it projects beyond the opposite side of the pulley, as shown by dotted lines in Fig. 2. The iiat rawhide disk is in this manner converted into a seamless tubular covering which has it-s edges arranged on opposite sides of the pulleyrim. These edges are bent inwardly and secured to each other on the inner side of the pulleyuini by means of cords e, arranged in the form of lacing, whereby the edges of the tubular covering are drawn tightly together and the covering is stretched smoothly over the peripheral face of the pulley, as shown in Fig. 4. rIhis soft rawhide covering shrinks and becomes exceedingly hard in drying on the pulley, which causes it to adhere with a firm grip upon the pulley, and the anirular edges of the covering, which have been bent under the pulley-rim when dry, cling to the same and assist in holding the covering securely in place on the rim.

If desired, the lacing-cords which connect the edges of the covering may be removed at'ter the covering is` dry, as represented in Fig. 5, as the latter is incapable ot becoming disengaged from the pulley.

A coating of glue may be applied, if desii-ed, to the periphery of the pulley to aid in retaining the covering thereon "when subjected to very severe usage, and several coverings may be secured, one above the other, as shown in Fig. 5, the number heilig increased or reduced in accordance with the nat-ure of the work demanded of the pulley.

This manner of applying a rawhide covering to pulleys avoids the use of a seam or joint on the face of the pulley, which is apt to destroy the utility of the covering.

The method of lacing the annular ends of the covering on the inner side of the rim permits the covering to shrink with perfect frccdom, and therebyavoids the tearing resulting IOO lill

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lar Covering` of rawhide, having its edges bent r 5 over the edges of Lhe pulley-rim and laced together on the inner side of the rim, substantially as set forth.

In witness whereof I have hereunto set my hand and affixed my seal this 19th day of zo November, 1889.

h`s FREDERIGK LA'rULIP. [1.. s]

mark

Witnesses:

THOMAS HOGAN, C. W. PHILLIPS.