US603237A

US603237A - morrison

Info

Publication number: US603237A
Authority: US
Publication date: 1898-04-26
Anticipated expiration: 1915-04-26

Description

(No Model.) 2 Sheets8heet 2.

0 A. MORRISON & J. MO'RA WINDLASS. No. 603,237. Patented Apr. 26,1898} 5 V a E v Wfliweww aware/M005 UNITED- STATES PATENT -O IcE.

CHESTER A. MORRISON AND JOHN MORAN, OF MANITOU, COLORADO; SAID MORAN ASSIGNOR TO, AND SAID MORRISON ASSIGNOR OF PART TO, LAURA E. MORRISON, OF SAME PLACE, AND WILLIAM WHELAN, OF EL PASO COUNTY, COLORADO.

WINDLASS.

SPECIFICATION foriningpart of Letters Patent No. 603,237, dated April 26, 1898.

Application filed June 24, 1897.

To all whom it may concern.- Be it known that we, CHESTER A. MORRI- SON and JOHN MORAN, citizens of the United States, residing at Manitou, in the county of 5 El Paso and State of Colorado, have invented a new and useful Improvement in Windlasses, of which the following is a specification.

Our invention relates to' improvements in windlasses used for hoisting purposes, and I specially adapted to be used where blasting is required in the excavation under the wind- 1ass,such as in shafts and wells sunk in rocky formations.

The objects of our improvements are, first, I to provide a Windlass-drum with a ratchetwheel on each end; second, to provide a pawl to set the ratchet-wheels which willbe safe and secure; third, to arrange for the instantaneous removal of the drum of the Windlass from the supporting-standards by providing a metal box to fit over the top of the standards; fourth, to reduce friction in operating the Windlass by providing adjustable boxes with ball-bearings. We attain these objects by means of the mechanism illustrated in the accompanying two sheets of drawings, in which-- Figure 1 is an end view of a Windlass constructed in accordance with our invention. Fig. 2 is a section of the drum of the wind lass, taken through the dotted line 2 2 in Fig. 6. Fig. 3 is a section showing the end of the box and the location of the balls which serve as a bearing for the shaft of the drum. Fig. 3 5 4 is a plan View of the bottom of the box, and Fig. 5 is a similar view of the top of the box. Fig. 6 is a plan view of the top of the entire Windlass. Fig. 7 is a detailed side elevation of the pawl; and Fig. 8 is a View of the under side ofthe pawl, showing the lips thereon. Fig. 9 is a side View of the entire Windlass. Similar characters of reference refer to the same parts throughout the several views.

The Windlass-drum B is supported .byv two standards A A, which are mortised in and secured to the curbing at the top of the shaft or well. The drum B has a collar 1) at each end to prevent the rope from I winding up Serial No. 642,042. (No model.)

against the ratchet-wheels C C, which are secured bymeans of screws or other suitable devices to the ends of the drum B, so that the ratchet-wheels will be turned in conjunction with such drum. The ratchet-wheels C C have their teeth pitch in opposite directions, so that when the drum is being turned in one direction one of the pawls E will engage one ratchet-wheel and when the drum is turned in the opposite direction the other pawl will engage the other ratchet-wheel.

The rope G has the buckets H and H at tached to its'respective ends, and the rope is wound around the drum a number of times to prevent it from slipping, and the ends of the rope descend from opposite sides of the drum, so that when one bucket ascends the other descends. The purpose of having the ratchet-wheels secured to each end of the drum is to facilitate the operation of the windlass by one person by having the bucket ascend at the end of the drum next the operator and near the ratchet-wheel, so that the operator can conveniently take hold of the bucket with one hand and disengage the pawl with the other when removing the bucket, whereas if the ratchet-wheels were both on the same end of the drum one of the buckets would be elevated at the end of the drum farthest distant from the operator or from the ratchet- .wheels, and the operator could not hold the bucket and at the same time disengage the pawl, but he would have to place something under the bucket to keep it from descending and then go to the opposite end of the drum and disengage the pawl and return to remove the bucket.

The pawl E has the lips e e at either side of the point which engages the ratchet-wheel,and these lips are designed to rest against the edges of the ratchet-wheel to prevent the pawl from slipping off of the ratchet-wheel in the event that the joint 6 should become worn, so as to allow the pawl to have lateral a fiat-faced pawl will slip off the side of the ratchet-wheel when under heavy strain and allow the bucket to fall.

The pawls and their supports consist of two partsthe half-circular arms E and the pawls E. The pawls E rotate on the joints 6' e and can be raised and lowered at will. The arms E are stationary and are held in proper position by bolts passing through them and the standards A at the point E The stationary arms E serve to raise the pawls E high enough to allow them to drop down and rest on the ratchets, so that there is no danger of their becoming disengaged when the ratchets are turned, whereas if the pawls were made of one piece and rotated at the point E they would be liable to be thrown out of engaging contact with the ratchets by their rapid rotation. The shafts b extending from each end of the drum B, have metal boxes consisting of the bases F and the caps f, secured to them by means of the bolts f so that the boxes will remain on the shafts b when the drum is removed from the supporting-standards A. The purpose of having the boxes permanentlysecured to the shafts b is to facilitate the instant removal of the boxes inconnection with the shafts when the Windlassdrum is taken away to be out of the Way of a blast in the shaft or well.

The bases F have downward projecting flanges f at their ends and sides, whereby deep recesses are formed in the bottom of the bases to fit over the top ends of the supporting-standards A. The purpose of constructing the bases of the boxes with deep recesses in them is to prevent them from slipping oif the ends of the standards horizontally and yet allow them to be raised vertically and be thus removed from the standards at the pleasure of the operator.

The bases F are countersunk on their under surfaces to receive the heads of the bolts f so that the bottom of the bases will be smooth, while the bolts will be kept from turning.

The bases F and the caps f have a narrow groove in them, extending around the bearing of the shaft,for the reception of the small steel balls f and the shafts rest upon these balls, thereby greatly reducing friction when the Windlass-drum is operated.

XVe construct the boxes as above described and fasten them permanently to the shafts b to prevent the loss of the steel balls when the drum is hurriedly removed from the supporting-standards, as it must be to avoid injury when blasting in shallow shafts and wells.

The Windlass is provided with a crank D, which can be slipped on the shafts Z2 at either end of the drum.

Having described our invention, what we claim, and desire to secure by Letters Patent, 1s

1. The combination in a Windlass of two reversely-set ratchets, and two pawls having the lips e, e, at their ends which engage the teeth, the joints 6 near the centers, and the eyes E at their base ends, substantially as described and for the purpose set forth.

2. The combination in a Windlass of two deeply-recessed, countersunk bases F, two caps f and bolts f with the drum-shafts b to which they are permanently attached, and adapted to slip over and rest loosely on the ends of the supporting-standards A, substantially as described and for the purpose set forth.

CHESTER A. MORRISON. JOHN MORAN. \Vitnesses:

IlUeo PEYDLER, A. 'l. McDILL.