US639596A - Windlass. - Google Patents

Description

No. 639,596. Patented Dec. 19,1899. v C. A. MORRISON.

' WINDLASS. (Application filed Jan. 8, 1898.)

(No Model.)

NiTEo STATES CHESTER A. MORRISON, OF MANITOU, COLORADO.

WINDLASS.

SPECIFICATION forming part of Letters Patent No. 639,596, dated December 19, 1899. Application filed January 8,1898. Serial No. 666,060. (No model.)

To all whom it may concern:

Be it known that I, CHESTER A. MORRISON, a citizen of the United States, residing at Manitou, in the county of El Paso and State of Colorado, have invented a new and useful Windlass for Mining Purposes, of which the following is a specification.

My invention relates to improvements in windlasses to be used in mining, in which the Windlass-drum and attachments can be speedily removed from the supporting-standards. The objects of my improvements are, first, to provide ball-bearing journals for the windlass-drum and its actuating means; second, to facilitate the speedy removal of the windlass-drum and its actuating means from the supporting-standards; third, to provide a j ournal-box for the shaft of a windlass-dru m,

which j ournal-box will also serve as a j ournalfor the drum-actuating machinery and as a support and journal for the pawl used in connection with such Windlass-drum; fourth, to afford facilities for securing a ratchet to each end of the Windlass-d rum,and, fifth, to provide a shaft for use in a Windlass, which will be secured against longitudinal movement without the use of collars or similar means. I attain these objects by the mechanism illustrated in the accompanying drawings, in which Figure 1 is a side view of the entire Windlass. Fig. 2 is an end view. Fig. 3 is a sectional end view of the journal-box, taken through the .dotted line 1 2 in Fig. 1. Fig. 4 is an edge view of the ratchet-wheel, showing the collar and hub attached to it. Fig. 5 is a side view of the plate for holding steel balls against the cap D. Fig. 6 is a longitudinal View of the shaft to which the crank G and pinion F are secured, showing the grooves for ball-bearings. Fig. 7 is a portion of the drum-shaft, showing the groove for the ballbearing.

Similar letters refer to similar parts throughout the several views.

The Windlass and its actuating mechanism are supported by two heavy wooden standards I I, secured by any suitable means to the curbing of the shaft. On the top of these standards rest the peculiarly constructed metal caps D, as fully appears from the sectional View as shown in Fig. 3. These caps rest loosely onthe top of the standards, so that they can be readily removed vertically. The upper portion of the cap D serves as a base of a journal-box for the shaft 6, while from the center there is a downward-projecting portion which serves as a bearing for the shaft L. The cap D has an arm 0' on one side, which serves as a journal for the short shaft f on which the pawl G rotates. The journal-cap d is secured to the cap D by means of the threaded bolts 01. There is a groove in the center of the journal-cap cl and a corresponding groove in the cap D to receive steel balls to form a bearing for the shaft 6, and the shaft 0 has a similar groove e to receive the balls. The groove 6 in the shaft serves the important purpose of keeping the shaft from moving longitudinally,

thus dispensing with a collar at either side of the journal-box and the friction which would result from the collar coming in contact with the box.

In order to provide the short shaft L with ball-bearings, provision is made for placing steel balls at each side of the cap D where the shaft passes through said cap, and the shaft is grooved, as sho'wnin Fig. 6 atZ Z, at the point where the shaft rests upon the balls to keep it from longitudinal movement. The cap D is beveled around the hole through which the shaft L passes at either side, and a plate 72, similarly beveled, is secured to the cap D by means of bolts or other suitable means, and the two beveled edges form a raceway in which the steel balls run, thus form= ing a ball-bearing at each side of the cap D for the shaft L.

The plate 71., as shown in Fig. 5, has the perforations h to receive the bolts that se= cure it to the cap D and short square lugs 71 that fit in sockets in the cap D to keep the plate from rotating and that assist in supporting the weight-pressure of the shaft against the balls when the Windlass is in operation. If it were not for these square lugs, the small bolts through the perforations it would have to support the plates and the pressure of the shaft on the balls in the sheave; but by using lugs on the plate the weight falls on them and not on the bolts, thus makinga strong and durable support for the plates. The plates are beveled around the edge of the hole through which the shaft passes, as shown by h and the cap D is similarly beveled on each of its sides around the hole through which passes the shaft L.

The shaft L has a pinion F secured to it by a key, and its outer end is made square to receive the crank G, which is kept on the shaft by means of the threaded nut g, which is run up against the hub on the crank. The pinion F may be of any desired size, preferably one-half the diameter of the cog-gear E, so that two revolutions of the crank will be required to make one revolution of the drum of the windlass.

The shaft 6 has secured to its outer end the cog-gear E. This shaft after passing through the cap D extends through an inner hub Win the ratchet-wheel and into, but not through, the drum A. A pin 5 which passes through the hub Z1 and through the shaft 6, keeps the shaft from turning in the hub and causes the shaft and ratchet-wheel to rotate in unison.

The ratchet-wheel B is cast with a broad heavy collar Z2 on-one side of it and a hub in the center. The collar slips over the end of the drum, while the hub is forced into the center of the drum A. The ratchet-wheel B is cast solid, with three or more holes through it to receive long wood-screws B B which en ter the head of the drum and keep the shaft 6 and the ratchet-wheel from turning in the drum. The ratchet-wheel is constructed with the hub, collar, and screws through it and fastened to the shaft 6 and then attached to the drum. By this means the shaft c is given all needed strength without passing through the drum'its entire length.

The drum A has heavy iron hands a on each end to prevent it from cracking or splitting.

Apawl C, rotating on the short shaft f, is so constructed that it engages the teeth on the ratchet-wheel when the operator wishes to secure the bucket elevated by the windlass from falling accidentally. When not in use, the pawl can be thrown back out of engaging contact with the ratchet-wheel. 7

All the parts described are made in duplicate, and in a complete windlass one set is secured to each end of the drum in the manner above indicated, so that the windlass can be operated from either end with like results.

The standards I Ihave a deep square socket in their uppor portion to fit the cap D.

In use the caps D D, having secured in them the shafts L L, to which are attached the pawls C O, are permanently fastened to the shafts c e by means of the box-caps (Z (Z and the screws (1 cl, so that the drum A,

ratchet-wheels B B, cog-gears E E, pinions F F, cranks G G, and pawls C C will be attached together, whereby all these parts can be removed from the supporting-standards in connection with the drum when a blast is fired in the shaft below the windlass.

In operation the caps D D, to which are connected the drum and its actuating means and the two reversely-set ratchets, with their pawls, are slipped down over the supportingstandards I I until they rest securely on the top thereof. A rope, with a bucket attached to each end, is wound around the drum a num ber of times, so that one bucket will be elevated while the other descends. The operator takes hold of the crank at the end of the drum where the bucket will ascend, throws the pawl into engaging contact with the ratchet-wheel, and by turning the crank rotates the pinion F, which engages the cog gear E, causing it, the shaft 8', and the drum and ratchets to revolve. The pawl secures the bucket from accidental descent and holds its actuating machinery are removed together to a place of safety. After the blast the windlass is returned, the caps slipped down over the standards, and the windlass is ready for immediate use. Thereis no dang'er of losing the steel balls which form the bearings of the different shafts in the operation of removing and returning the drum,while the long flanges on the caps D D furnish a steady and safe means of keeping the windlass firm when in operation. The pinions F F being directly beneath the cog-gears .E E and in the center of the supporting-standards there is no side draft on the caps.

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

The combination in a windlass of the removable cap D and the journal-cap cl secured thereon, the drum A, the shaft 6 journaled in said cap D and passing into the drum A, the ratchet-wheel 13 secured to the shaft e and the drum A, the pawl O pivoted on the cap D and adapted to engage the ratchet-wheel, the pinion E on the outer end of the shaft c, and means for operating said pinion, substantially as described.

. CHESTER A. MORRISON.

IV itn esses:

JNo. L. SEMMES, JAMES A. ORR.

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