US311370A - richardson - Google Patents

Description

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

S. T RICHARDSON.

WINDLASS.

No. 311,370, Patentd Jan. 27, 1885.

(No Model.)

2 Sheets-Sheet 2. S. T. RICHARDSON.

WINDLASS.

No. 311,370. Patented Jan. 27,1885

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SAMUEL T. RICHARDSON, OF BALTIMORE, MARYLAND, ASSIGNOR TO THE RICHARDSON MANUFACTURING COMPANY, OF SAME PLACE.

WINDLASS.

SPECIFICATION forming part of Letters Patent No. 311,370, dated January 2'7, 1885.

To all 1072 0112, it may concern:

Be it known that I, SAMUEL T. RICHARD- soN, a citizen of the United States, residing at Baltimore, Maryland, have invented new and useful Improvements in Vindlasses, of which the following is a specification.

This invention relates to windlasses for use on shipboard in dropping and weighing anchors, and for analogous purposes in various IO situations.

The machine represented in the drawings may, if desired, be arranged between decks and it consists of a pair of barrels or drums mounted loosely on a shaft supported in suitable bearings, means being provided for con necting one or both of said barrels rigidly to the shaft, so that they may rotate together, or so that only one can be used, if required. The machine also embraces mechanism for convertin g an oscillatory movement into a continuous rotation of one or both barrels, and means for arresting or retarding the backward rotation of said barrels in paying out the cable.

The invention consists in certain peculiarities in the construction and arrangement of parts, as hereinafter more fully set forth.

,In the annexed drawings, illustrating my invention, Figure l is a front elevation of my improved windlass,partly in section, and Figs.

2 and 3 are sectional detail views.

The rotating axis or shaft A of this windlass is supported centrally in a bearing, a, secured to a post or standard, B, and its ends are journaled in bearings provided therefor in standards or posts G G.

On the shaft A are loosely mounted a pair of Windlass-barrels, D D, and a pair of bevelgears, E E, the latter having elongated hubs b, that abut against the central bearing, a, of

40 the Windlass -shaft. The inner ends of the loosely-mounted barrels or drums D D are provided with an annular series of ratchetteeth, 0, and the outer faces of the loose gears E E have pivoted thereto a number of gravity- 5 pawls, d (1, adapted to engage with said ratchetteeth. The outer end of each Windlass barrel or drum D has a flanged periphery, e, and a hub, f. This hub is recessed on its outer side, as shown in Fig. 1, for the reception of nuts 0 g 9, that are screwed upon a threaded portion,

(No model.)

h, of the shaft A, so as to prevent lateral movement of the Windlass drum or barrel.

To each end of the shaft A is keyed a sliding clutch, F, having jaws or lugs 15 'i, for en- I gaging corresponding lugs, i t", on the barrelhub. The clutches F are each provided with an annular groove, 70, for the engagement of a collar, m, attached to a lever, G, that is pivoted in bearings on the post or standard 0, in which the end of the shaft is journaled. It 6 will be seen that by shifting the clutches F into proper position, either or both Windlassbarrels can be connected rigidly to the shaft A, so as to rotate together or independently, as required. The pawls d d on both bevel- 6 gears E E are arranged to point or work in the same direction, and are alternately brought into engagement with the ratchet-teeth c on the opposite drums or barrels I) by the oscillatory movements of the gears E. These bevel- 7 gears E are actuated by an intermediate bevelgear, H, that is j ournaled in any suitable manner in a plane at right angles with the gears E E and meshing therewith. The bevel-gear H may be oscillated by detachable levers inserted in sockets I on the outer face of said ear. g It is obvious that when both Windlass-barrels D D are connected to the shaft A by the I clutches F F a continuous rotary movement will be imparted to the barrels and shaft by the oscillating movements of the gears H and E E. When one gear E is moved forward by the gear H, the opposite gear E is moved back, and as the pawls d d point in the same 8 5 direction on both gears E it is apparent that as one set of pawls come into engagement with the adjacent ratchet-teeth c the other set of pawls are moved back with a sliding movement over their ratchet for a new hold. Power 0 is thus applied'alternately to the barrels D D; but While both are connected rigidly to the shaft A a continuous rotary movement of both barrels will be produced.

If desired, either one of the Windlass-barrels 9 5 can be rotated without moving the other. This is accomplished by sliding one of the clutches F out of engagement with the clutchjaws 13 i on the adjacentbarrel and by holding the pawls 1 (1 of the gear E on that side of the Windlass out of engagement with the ratchetteeth on the barrel that is to remain stationary. In order to enable the pawls d d to be raised simultaneously out of engagement with the ratchet, they are connected by means of a curved bar, 19, Fig. 3, that is pivoted to the central pawl. This bar 19 has slotted ends for engaging pins on the outer pawls of the series, so that when the bar is raised all the pawls are disengaged from the ratchet c. Corresponding perforations, s s, are made in the bar 1) and gear E, for the ,reception of a pin that holds the bar and attached pawls away from the ratchet. Either one of the Windlassbarrels D can thus be disconnected from its actuating-gear E and from the shaft A, so as to remain stationary while the other barrel or drum is being rotated.

Beneath each barrel or drum D is a guide roller, K, having several annular grooves for guiding the cable while being wound, so that it will be laid on the drum or barrel in regular coils.

Then it is desired to unwind the cable or allow it to pay out freely-in lowering an anchor, for instance-the drum or drums D D may be permitted to rotate backward on the shaft A by disconnecting the clutches F F and by elevating the pawls d d, as before described. The backward rotation of the drum or drums under the weight of the anchor will thus exert no action. on the shaft A or gears E and H.

In order to control the speed of the unwinding cable, friction is applied to the drum or drums D by means of a metallicfrictionband or brake-strap, L, Figs. 1 and 2. This brakestrap or friction-band is placed in a groove formed in the flanged peripherye of the outer end of the drum.

band or strap being By reference to Fig. 1 it will be seen that a portion ofthe friction-band is slotted, as shown at t, and another portion is reduced in width to pass through said slot, one portion of the turned upward and the other portion down, as shown in Fig. 2. The upper end of the strap L is connected to the lower end of a rod, M, that is pivoted to a plate, 1), secured overhead. Thelower end of the strap L is attached to the upper end of a rod, the lower end of which is screw-threaded and inserted in the threaded hub of ahandwheel, P, that is connected to the upperscrewthreaded end of a rod, Q, the lower end of which is pivoted to a plate, w, that is secured to the deck or floor. The rods N and Q are screw-threaded in opposite directions, one being right hand and the other left, so that the band L can be tightened orloosened according to the direction in which the wheel P is turned. By this means asufticient degree of friction can be readily applied to the drums Dto arrest or retard their backward rotation and thereby,

7 control the speed of unwinding the cable.

WVhile the windlass is designed principally for use on shipboard in dropping and Weighing anchor, it is obvious that it can be applied to advantage in other situations and for various purposes.

Having thus described my invention, what I claim is- I 1. The combination, in a Windlass, of the shaft supported in bearings, the clutches sliding on the shaft, the two loose drums having at their adjacent ends the annular series of ratchet-teeth and provided with clutches at their other ends, the loose gear-wheels on the shaft, the gravitating pawls 011 the outer faces of the gear-wheels for automatically engaging the annular series of ratchet-teeth and the intermediate gearwheel, substantially as described.

2. The combination, in a Windlass, of the shaft mounted in bearings the two drums loose on the shaft and provided with the annular series of ratchet-teeth, clutches for rigidly connecting one or both drums to the shaft, the gear-wheels loose on the shaft, the pawls on the gear-wheels automatically engaging the ratchetteeth on the drums, and means for operating the gear-wheels to impart a continuous rotary movement to one or both drums, substantially as described.

3. The combination, in a Windlass, of the shaft, the two drums loose thereon and provided with the annularseries of ratchet-teeth,

clutches for rigidly connecting one or both drums to the shaft, the gear-wheels loose on the shaft, the pawls on the gear-wheels automatically engaging the ratchet-teeth on the drums, the intermediate gear for operating the gear-Wheels and imparting a continuous. rotary motion to one or more drums, and the friction-brakes acting on the drums, substantially as described.

4.. The combination, in a Windlass, ofa shaft, two drums loose thereon and each provided with an annular series of ratchet-teeth, a pair of gear-wheels loose on the shaft and carrying pawls automatically thrown into engagement with the ratchet, means for holding the pawls of either gear-wheel out of engagement with its ratchet, and gear for oscillating said gearwheels, substantially as described.

5. In a Windlass, the combination of the shaft A, drums or barrels D D, having ratchetteeth a 0, the loose bevel-gears E E, carrying pivoted pawls d d for engaging said ratchets, the bars p p, and the intermediate bevel-gear, H, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

SAMUEL T. RICHARDSON.

Witnesses:

A. H. NORRIS, J os. L. OooMBs.

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