US757668A - Windlass. - Google Patents

Description

No. 757,668. PATENTED APR, 19, 1904. G. W. MBNEPE. WINDLASS.

APYLIOATION FILED MAY 27, 1963.

A IODEL.

IN VEN TOR.

Mk ATTORNEK which is kept on while the drum is winding- No. temes.

atented. April. 19, 1904.

APATENT EOFFICE,

GEORGE `w. iviENEEEE, for BERKELEY, CALIFORNIA.

WI'NDLASS.

SPECIFICATION forming part of Letters Patent No 757,668, dated April 19, 19041.

vApplication. filed May 27, 1903. Serial No. 158,985 (No model.)

To ddl whom if may concern; s Beit known that I, GEORGE W. MENEEEE, a citizen of the United States, residing' at Berkeley, in the county of Alameda and State of California, have invented certain new and up its rope, which brake permits the drum to wind up the'rope, but automatically prevents its unwinding; secondly, to provide an improved device for thrusting the drum end-v wise against the driving-wheel; thirdly, to provide an improved friction-ring for imparting motion from the driving-wheel to the drum; fourthly, to provide an-adj-ustable and automatic device to cause the drum andwinding-wheel to engage with just sufficient fric.-

tion to wind up the lslack ropeslowly or to hold it from unwinding freely and at toohigh a speed under its own weight.

Some of the 4purposes to which my improvedl windlass may be putare to run `elevatojrs, to operate hauling-ropes on ships and elsewhere, and to wind up or hold fast Va rope t or chain for operating cableway conveyers. Other .uses and purposes to which my inventionma'y be 'used will readily suggest themselves.

My invention therefore resides in the novel construction, combination, and arrangement of parts for the above ends hereinafter fully specified, and particularly pointed outinthe claims.

l,In the accompanyingdrawings, Figure lis a vertical section of the windlass, the upper;-

part being taken through the end of the wind-V lass adjacent to the ,brake wheel and the lower part being takenslightly nearer to the other end toshow, `the brake-leveringfulfl.. Fig.2 is a horizontal section of `thewindlass .through the main shaft. j Fig. 3 is a side ele- 2 vation of the driving-or friction wheel. Fig.v tis a detail side view of the operating-lever. Fig. isa view of the same at right angles to Fig. 4C. Figs; and 7 are detailface views of the ratchet-toothed collars n f Referring to the drawings, 1 represents the frame of ,the windlass, comprising suitable pieces 2, securedtogether by ties 3. In said frame is revolubly mounted a shaft 4, which carries, preferably keyed thereon, as shown, at 50, a drivingfwheel 5, having gear-teeth 6 on its periphery engaged by a pinion 7 on a shaft 8, operated from any suitable source of power, In the present instance I haveshown a sprocket-wheel 9 on said shaft 8 for operating. the same from an engine at a distant point. Upon the face of `said driving-wheel are mounted the friction-ring sections 10, of wood, paper, or othersuitable materiahwhich when placed inposition form a continuous ring and are secured in position by means of a fiat band 11, of metal, bolts 12 being used to secure said band, friction ring sections, `and 'driving-wheel together. The frictionring thus formed is wedge-shapedin crosssection, as clearly shown in Fig. 2, toengage the sides of an annular trough 13', formedin the end of the winding-drum 14; Saidrdruin is movable lengthwise upon the shaft 4:so thatthe sides of the trough are broughtinto engagement with'the sloping sides of the fric,- tion-ring. Y

15 isa brake-wheel looselymounted upon a shaftand slidable thereon, having a peripheral groove 16 to receive a brake-band 17 In said groove are tted the wooden brake-blocks 18, .upon which thebrake-hand rests.l On one yside o f the brakewheel is secured a removable ring 19, which closes on one ,side thek groove in the periphery of said wheel and holds the bandl in place, and the'inner edge of said ring 19 extends inward within the periphery. of the end ofthe windingdrum14, thus preventing theY brakeLwheel lfr om ,separating from the drum. The ends of said. Lbrake-band are secured, as shownat 20,130 a disk 21, mounted upon a `shaft A22, having bearings inthe frame of the windlass, and to saidgdisk is seuredfa lever Q3 for? tightening said brake-band upon the brake-Wheel.l The points of attachment of the brake-band to the disk are so located that a downward movement of the lever draws the upper one of said points of attachment in a tangential direction relative to the brake-wheel and the lower one in a radial direction with reference thereto, so that such downward movement has the effect of tightening the band upon the brakewheel. The lever 23 is provided with a series of holes 24, by means of any one of which may be secured a clevis 25, supporting a suitable weight 26. The effect of this weight is to normally maintain said brake band tight varound the brake-wheel.

To the end of the lever 23 is attached a rope 27, which passes over a pulley 28, and thus provides means whereby' the operator can lift the lever, permitting the brake-band to slacken and taking the brake off the brake-wheel and drum, thus allowing the drum and brake-wheel to turn backward.

The end of the drum has an annular series of internal notches 33, which are engaged by dogs 34, p'ivotall y mounted upon the inner face of the brake-wheel by means of shouldered bolts 35, said dogs being normally thrown into engagement with the notches by means of springs 36. Said notches and dogs are so located with reference to each other that only one of said dogs is in engagement with a notch at the vsame time, the ends of the other dogs being at regularly-increasing distances from the notches. The effect of this is to provide that the winding-drum shall revolve backward not more than one-quarter the depth of a notch before it is arrested by the engagement of a notch with one of the dogs.

The arrangement of the springs and dogs is also so contrived that said dogs and springs can be turned over to point in the opposite direction, but at substantially the same angles with the notchesso that the operation of the brake-wheel may, if desired, be reversed in direction. y l

For the purpose of throwing on the power to operate the windlass it is necessary that the drum and brake-wheel shall be shifted longitudinally, and for this purpose I provide the following contrivance: Secured to the frame of the windlass by means of a bolt 37 is a plate 38, having secured thereto a collar 39 around theshaft 4, having four crown ratchetteeth 40. A collar 41,-similar to the collar 39, but movable upon the shaft 4, is secured to Y -a plate 42,.similar to the plate 38, and said Y being interposed between the hub of the brake-wheel and the frame of the windingdrum, thus spreading apart will have the effeet of causing the drum and the brake-wheel to move lengthwise toward the friction or driving wheel, thus bringing the annular trough in the end of the drum into engagement with the sides of the friction-ring and causing the windlass to rotate with said friction or driving wheel. I provide an automatic means for maintaining said friction-wheel in engagement with said windingdrum, said means comprising a weight 44 of any desired magnitude mountedl adjustably longitudinally on the handle. By placing said Weight at the proper position upon the handle it may be so arranged that the winding-drum will be engaged with the friction-ring with suflcient force to raise a given weight. This is of special value for raising unloaded ropes and winding the same on the winding-drum, for which purpose the Weight 44 will be moved close to the inner end of the handle; but it may also be used as an automatic device for raising heavy weights, in which case the weight will be moved to the outer end of the handle.

To prevent the endwise movement; of the shaft, the ends of the shaft 4 are grooved, as shown at 45, and a suitable set-collar 46 is provided at each end thereof, especially at the end farthest from the friction-ring.

Supposing that it is desired to wind up weight upon the Winding-drum, the first operation is to throw over the handle-bar 43,

the extended end of which rests against a stop Y 47 when the windlass is not in use. rlhe effect of throwing the handle-bar over is ,to move the winding-drum and the brake-wheel endwise against the friction-wheel, and thus to communicate motion to said winding-drum from said friction or driving wheel. It Will not be necessary to hold the handle-bar in the position to which it has been thrown, as the weight will be suiiicient to maintain it in such position, said weight being so adjusted for the purpose as to distance from the fulcrum.

To arrest the `winding movement, the handle is returned to its former position, when the winding-drum no longer revolves. The backward movement of the winding-drum is then arrested by means of the brake-wheel through the intermediate dogs and notches and-by the friction of thebrake-band on said brake-wheel, said brake-band being held tight on said wheel by means of the weightedlever 23. If, however, it is desired to allow the winding-drum to pay off rope, this can be done by raising the lever by means of the rope IOO IIO

27, which slacks the pressure of the band upon ing a connection with thek Winding-drum permitting rotary movement of the latter in one direction while arresting it inthe other, the bralie-band'around said brake-Wheel, a lever for operating said brake-band, a Weight normally holding said lever in its operative position, and means for raising the lever against said Weight to release the brake-band, substantially as described.

2. The combination of the friction or driving wheel, the Winding-drum arranged to be brought into engagement with said drivingvWheel by an endwise movement, and the brake- Wheel, mounted concentrically with the Winding-drum, said brake-Wheel and drum having, the one a series of notches, and the other a dog engaging the'notches in succession, permitting the movement of the Winding-drum in one direction While preventing its movement in the opposite direction, a brake-band around the brake-Wheel, means for normally` brake-Wheel comprising a circular series ofnotches on one of said elements and a series of spring-,actuated dogs on the other element, said dogs being unsymmetrically arranged With reference to said notches so that only one of them can be in engagement with a notch at the,

same time, substantially as described.

4. The'combination or' the friction-Wheel, the Winding-drum, the brake-Wheel having an operative connection with the Winding-drum to restrain its'rearward movement and the ring secured upon the side of the brake-Wheel and overhanging the periphery of theend of the Winding-drum, substantially as described.

5. The combination of the Winding-drum, the brake-Wheel having a connection with the winding-drum permitting rotary movement of the latter in one direction While arresting it in the other, the brake-band around said brake-Wheel, a lever. for operating said brakeband, a Weight normally holding said lever in its operative position, and means for raising the lever against said Weight to release the brake-band, substantially as described. 6. The combination of the Winding-drum, the brake-Wheel at the end of the windingdrum, and means for operatively connecting said Winding-drum and brake-Wheel comprising a circular series of notches on one of said elements and a series of spring-actuated dogs on the other element, said dogs being unsymmetrically arranged With reference to said notches so that only one of them can be in engagement with a notch at the same time GEORGE W. MENEFEE.- y

Witnesses:

FRANCIS M. VVRiGHT, Jnssin GORFINKEL.

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