US403460A - cowles - Google Patents

Description

(No Model.)' 2 Sheets-Sheet 1.

G. 0. OOWLES.

DRIVE PULLBY.

No. 403,460. Patented May 14, 1889.

J2 y fgzo 2 Sheets-Sheet 2. G. G. GOWLES. DRIVE PULLEY.

(No Model.)

Patented May 14, 1889.

UNITED STATES.

PATENT OFFICE.

GEORGE C. COXVLES, OF EAST SAGINAWV, MICHIGAN, ASSIGNOR OF ONE-HALF TO ED\VARD GERMAIN, OF SAME PLACE.

DRlVE-PULLEY.

SPECIFICATION forming part of Letters Patent No. 403,460, dated May Ia, ruse.

Application filed October 11, 1888. Serial No. 287,825. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE C. CowLEs, a citizen of the United States, residing at East Saginaw, in the county of Saginaw and State of Michigan, have invented certain new and useful Improvements in Drive-Pulleys; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to I 0 which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of of this specification.

This invention relates to drive-pulleys, and particularly to the construction of parts whereby the pulley is made self-gripping to the shaft, and also in the construction of the parts whereby a section of the pulleymay be readily removed, so as to enable removing the pulley from the shaft without disturbing the shaft in its bearings or any other pulley that may be upon the same shaft.

The features of this invention are illus- 2 5 trated in the drawings as applied to what is known as a wood pulley. The rim and web are made up of layers of thin wood glued together so as to cross the grain of each layer, thus forming a light and strong pulley.

The essential features of this invention will be pointed out particularly in the claims.

In the accompanying drawings, forming a part of this specification, Figure 1 is a side plan of the pulley mounted on a shaft, some 3 5 parts being in section. Fig. 2 is an enlarged central section of Fig. 1, taken on the dotted line a: so. Figs. 3 and at are detail plans of the locking-heads. Fig. 5 is a perspective of the pulley having the detachable part removed. Figs. (3, 7, 8, and 9 are perspective views of the locking and detachable parts of the pulley, all of which will be fully hereinafter set forth.

As indicated in the drawings, D represents the pulley; R, the flange; V, the central supporting-web. To said web and at the center of the wheel is secured on each side of the web a C-shaped metal flange or plate, F, as shown in Fig. 5, in which d represents the rivets. The flange-plates F are provided with the toothed or notched surfaces 11, and said plates have integral therewith the journal box m, in which latter is placed the wood bushing 17'.

In Fig. 5, K represents the opening formed in the pulley by the removal of the part B of Fig. 6. The Web W is provided at the opening K 5 5 with the channels or grooves z, and the main rim Rof the pulley is provided withthe transverse grooves o", which, when the parts are coupled as shown in Fig. 1,1'eceive the transverse lips .2 on the detachable portion of the pulley. This detachable section B is provided with a webbed portion, \V, to register with the web \V of the main portion of the pulley when the parts are coupled as shown in Figs.

1 and 2. The web I is provided on its edges with the tongues f, which fill the grooves .2 when the pulley is in its completed condition.

In Fig. 8, H represents a locking plate or head having on its opposite faces the toothed or notched surfaces n,which register and engage with the teeth of the flange-plates F, as shown in Fig. 1. S is a coupling-head having the central screw-threaded hole, 0, This coupling-head has a stem, V, which passes through the locking-head H and is riveted or upset at 2. (See Fig. Projecting from the opposite face of the coupling-head is a screw-threaded stem, V.

In Fig. 7 is shown a second locking-head, H, which is constructed the same as the head H, having the chamber 0. These lockingheads are secured together by passing the stem V of the head S through the hole h of the locking-head H and applying the nut as shown in Figs. 3 and 4.

Fitting into the chamber c, formed within the joined locking heads or plates, are the upwardly-extending wings 5 of the metal saddle or yoke S. The horizontally-projecting ends 4 of the yoke are concave-convex. The 0 curvature or concave at 8 is of less diameter on a horizontal than a vertical line. (See Fig.

1.) The object will be hereinafter set forth.

In Figs. 1, 2, and 6 it will be observed that the web W is provided with an opening, t, 5 leading horizontally through the web. Passing vertically through the web and at right angles to. the opening is the hole 7. This hole receives the upper end of the bolt B, having the nut a. At or near the center of I00 the bolt B and made fast thereto is the collar or nut a. The lower screw-threaded end, 3'', of this bolt enters the hole 0' of the coupling-head S, as shown in Figs. 1, 2, and 4, whereby all parts are locked together, as shown in Figs. 1 and 2..

In Figs. 1 and 2, 0 represents the main or drive shaft, to which the pulley is made fast by placing under the yoke S and on the shaft 0 the metal corrugated or friction roller P. The detachable parts being removed from the wheel, as shown in Fig. 5, the wheel is applied to the shaft 0 by passing it so as to allow the shaft to pass through the opening K and meet the journal-box, as shown in Figs. 1 and 2. The saddleS is then placed over the shaft, with the corrugated roller P centrally under it, as shown in Fig. 1. The locking-heads H H are then engaged with the teeth of the flanges F, the bolt B being screwed into the coupling-head S, as shown in Fig. 2. The detachable section B is then dropped into place, closing the gap. The nut a being applied to the upper end of the bolt B, the locking-heads and section are firmly and rapidly secured together, thereby completing the pulley and the attaching of it to the shaft.

It will be observed on looking at Fig. 1 that greater space between the saddle and the shaft for the roller P to lie in is directly at the center over the shaft, and that the curvature of the saddle at 8 is shorter or less than at the shaft 0. By this arrangement a partial rotation of the pulley on the shaft causes the roller P to travel in the narrow space,

' whereby the pulley becomes firmly attached to the shaft and maybe released by a partial rotation, so as to bring the roller P back to the position shown in Fig. 1. In this position the pulley may be moved along on the shaft to change its location horizontally on the shaft.

To remove the pulley from the shaft it is first rotated, so as to loosen the roller P. Then the nut a is removed from the bolt B. The part B is then drawn out of the pulley, as shown in Figs. 5 and 6. The lockingheads and the saddle are then removed, when the pulley may be removed from the shaft and without disturbing any of its bearings or supports.

Having thus fully set forth my invention, what I claim as new, and desire to secure by Letters Patent, is

l. A pulley having an opening leading from its periphery to its center, which opening is adapted to receive removable parts, the C- shaped and toothed flange-plates having the journal-bearing formed integral therewith, the yoke, the toothed locking-heads, the coupling-head, the detachable section B, and bolt coupling said section to the coupling-head.

2. In a removable and self-gripping pulley, the main portion having an opening leading from the peripheryto its center, the web W, having the grooves z, the toothed flangeplates F, having the journal-box m, the wood bushing therein, the yoke, the corrugated roller, the toothed locking-heads, the coupling-head, the section B, having the tongues f attached thereto, and the bolt and nut coupling thepart B to the coupling-head, as and for the purposes specified.

3. The herein-described pulley, comprising the following elements: the main portion having the central web, W, provided with the channels 2 therein and the transverse grooves 13 in the rim, the flange-plates having the toothed faces n and journal-box m, the wood bushing, the metal yoke S, the roller 19, the locking-heads having the toothed faces n, the coupling-heads S, the section B, having the lips z and the tongues f, and the bolt B, adapted to pass through the web of the section B and having a nut at .its upper end, the lower end of said bolt engaging with the coupling-head, substantially as and for the purposes specified.

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

GEORGE c. OOWLES.

Witnesses:

GEORGE P. ROBBINS, EDWARD W. GLYNN.

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