US2363138A - Reversible hand-operated windlass - Google Patents

Description

New 21, 1944. E. B. MOORE 2,363,138

REVERSIBLE HAND OPERATED WINDLASS Filed July 15, 1943 2 Sheets-Sheet 1 Nov. 21', 1944.

E. B. MOORE REVERSIBLE HAND OPERATED WINDLASS Filed July 15, 1943 2 Sheets-Sheet 2 w [A], 4 hwcnkw EDWAI 5.1400115,

Patented Nov. 21, 1944 i lzsssnssf REVERSIBLE, HAND-OPERATED WINDEASS;

t tq tmrati ng iohm j Edtmnd B townMoore; Newafk ohio, assignor 'to Schnler Engineeringfiompany, ewark, 01119,

Application ohm-@153; 1943, Seria1 i 4 4,81

a Clein s; (ohm-164) 1 The1presentrinventiomrelateszto improvements irr; powereaipplyinga 1 windlassesi having-. parti-cularrefenenoeitoia portablev Windlass inkwhioh: rotary motions is: imparted to: a: cableespoolingmdrumi through i pawlzandziratoh'et mechanism, theilatten being; operated hymn manually; oscillatomi lever. Such-1i windlassesm known commercially-1 as: power pullers, anei usedxadventageouslyi ini capacities requiring moving OI"1iftiIlgiOf'J hem/m equipment or obj ects-i of? many: difiereniz kindsy such as; ma -i chine; tools in theploedingwandn unloading: of freight: 011iQETfIOmTItIELIlSIIOItiLtiOH vehicles; inqz oil field operations; i'm applying tension-produce ing; forces: to: fenoing,a:telephone lines and in: various; other capacitiespin'whichypoweriiil me chemicali'foroes -ereineededs by manualioperators In priondevices:oiipthisachara'cten; considerable difficultyhas beeni encountered}. panticularlytinx stretching 0rtension-I.produoingoperations; in

controlia-bly releasing the tensioning." forces r developed by. such: a, Windlass. it "Usually this release has been effected by manually lifting the stop pawls f-rom engagement withthe ratchetteeth ofthe oable drum. uohan operation permits;

in many instances, oi a top sudden; and-uncontrolled release of the tensioning energy in the power-imparting cable of" the Windlass and oba jects or bodies "3' o ined therewith, frequent-weepsin? various types of" damage orp odncing other;

undesired operatingfjeonditions;

ventionto proyideja windless; oi gp weppuller. of the character set forth wherein H 1 m st n of the cable drum is renderedhreyersibleg bx non-1 mal operations jot the osqilleting lev ei' so that after the. drum cable has been tensioned tog a p e in egmej he 512 73 1 t e on mam relieved or removecl by theaotuation ofi levennpm 4,01 la d flw lon rpl in i element he, latter,

functioning to, release. oa ple tension-min a convt olled end iegulablenmannen,

Other. objects; of. thelineention residei me} WiIldIa SS OI. QOWQILRHHQLaOf is sturdy; compasitil and efiicient constructionnanm one composed of few and simple pents whichsane not likely tobreak, become ontof, order or to require un usual care in, their maintenance ratchet teeth.

i side bars 2.

Fig. 2 is e veftica'li, longitudinal; sectional, view, taken through the Windlass? Fig; 3 is a; sideweleilationalrView thereof; Fig. 4 is: a-wventioalitiiansvei se sectional view taken on: the planexindicated' .theiline, ,IV -IV' of-Fig.3; w l i i it Fig: 5 is a similan-iview, taken=;on;the p la-nefinclosing the drum-reversing letch theilatter being disclosed in its wonking positionpenaplin the dr-um of the Windlass to windits assoe iated caible thereon; I i Fig; 7 l is: a. similar View; disclosing the leteh in its c rki -:1 os t on permitting the un -t windingof;the cablelfrom theorem; i

F 8? s a: detail: vert cal sec ional? w is qdn ol in he. ope tion on the men-a tuated: feed1pawls, the cambeingshowna in its retracted p s ion permitting; he; fleed paw si-to enga e the; ratchet teeth ofi thevcablex-dwmx i F n 9- is. a .=s lam ewa di. c osing; t e am; in itsiadvancedapositiom in'iwhieh the feed; pa wls are? maintained out, on engegement: with the drum,

Referring more particularly to the drawings; the Windlass comprising the; present, invention; is formed to} inolude a substantially-e rectangula r e 1 em dy nggspaiped side; bars 2 whiphterminate at their fonwand; ends in] av ltansy ersei fronthar 31and at their} res-r; ends iin ayti ans-l verse rear; ban 4, the front beg-being provided; with an apentuiye Stthmugh which is pesseda-y 35 oa,b1e 6.-- Therean bari ltis formedmithap opene,

ing L in which the shank. Q1 0L a mounting hook 9iis-swiveledn In the useoe the Windlass, iihlSu hook; may be attached;' to: any suitable support so that the Windlass maybe maintained: suhstene tially stationary during itsi-operation. i

A stationary d umaxl H! ghas itse d; p r ions: received in transversely alignedopenings pro videdrintermediatelyl; of: the length; of the fname ,Mountedw for: -1: otetion! on; the axle, luv-is a cable-spoofing drum. It, to: which the innerwend of the cable 6- is; securely attached as; atZI ZQ The cable is adapted; to; be wound-or unwound on or from; the drum H; and extends through the aperture 5 to a suitable object or For elf urther undei standing of the invention body tvO WhiChg a; pulling fonee isto beepplied.

reference is to be had to the following descrip tion and the aocornpanying drawings, whereim In Fig. 1 of the; drawings the; cable, hasgheen shown as extending; around-the: pulley ot a; sheave-H block I3; having its outerendseeuredvto.a hOOk- I4 removably engaged with thei iront ban 3,

1 pawls 3 I.

tration and the cable may be otherwise connected or arranged to perform particular tasks.

In a preferred form of the invention, the sideforming walls I5 of the drum have their outer peripheral portions formed with ratchet teeth I 6. Engageable with these teeth are the outer ends of a pair of feed pawls I'I. These pawls may be integrally formed at the ends of a tube I8, the latter being rockiably mounted on a journalling rod I9, which has its ends positioned in the side arms of a lever yoke 2|. The lower ends of the arms 20 are pivotally united as at 22 to the side bars 2 of the frame I at positions immediately above the drum axle Ill. The upper end of the yoke terminates in a socketed extension 23 and the handle 24 of the operating lever has removable threaded engagement with the extension 23. A coiled spring 25 surrounds the tube I8, and one end of the spring engages with a finger extension 26 formed with said tube mid way ofits length while the other end of said spring is engaged with a pin 2! extending inwardly and laterally from a detent 28, the latter being pivotally supported by one end of the tube I8 and its function will be described hereinafter. The spring 25 by being thus mounted serves to maintain positively the feed pawls in contact with the ratchet teeth I6 of the drum, or to urge the pawls toward such engagement when actual engagement is-prevented.

Extending transversely of the frame I to the rear of the axle I0- is a rod 29, the latter having its ends supported in openings provided in the side bars 2 of the frame I. Mounted on the rod 29 is a tube 30, the latter being formed at itsends with-integral forwardly extending stop These pawls have their outer ends normally engaged with the ratchet teeth I6 of the cable drum, in order to prevent reverse rotation of said drum when the cable 6 is being wound thereabout. Such engagement may be positively maintained, although the force of gravity may be used, by providing the tube 30 with a coiled wire spring 32, one end of said spring engaging with one of the stop pawls, while the other end of;

the spring is connected to the rear bar 4 of the frame I.

Theconstruction thus far described is 3 that which is employed commonly in power windlasses of the manually operated type. For example, reference may be had to m former Patent No.

1,206,019, issued November 28, 1916. Such a Windlass will apply the necessary force to its cable so that one man may perform the work usually required ofseveral men. It will be seen that upon the forward oscillation of the lever. the

feed pawls will engage with the ratchet teeth of the/cable drum to rotate the latter in a direction winding the inner portions of the cable about the drum. The stop pawls function to hold the drum' against reverse rotation when the operating leveris being rocked rearwardly on its idle stroke. If a cable of such an ordinary Windlass is under tension, difficulty is frequently encountered in releasing or reducing such tension: Heretofore, this has been done by manually rockingthe feed or stop pawls to hold the same out of engagement with the ratchet teeth of the cable drum.

It will be seen, however, that with this mode of operation, if the'cable is under any considerable degree of tension, the release of the pawls from engagement with the ratchet teeth will cause the drum to rotate rapidly, unwinding the cable therefrom. This rapid release of the cable is often undesirable and is apt to result in injury to objects or bodies connected therewith. As previously stated, it is one of the purposes of the present invention to provide improved means for effecting a controlled release of the cable while it, is under tension, either at the conclusion of a given operation, or if an excess amount of tension has been applied to the cable, to reduce such tension to a, desired degree,

Such a controlled release of cable tension is obtained by the provision of a reversing latch indicated at 33. This latch may be formed from a flat metallic plate, which is provided with a circular opening 34, enabling the latch to be journaled on the hub extension of the cable drum II, so that the. latchinay rock about the longitudinal axis of said drum. The latch is positioned between one end of the drum and one of the side bars 2 of the frame I, as shown more particularly in Figs. 4 to 7, inclusive, of the drawings; The outer or peripheral edge of the latch is provided with a slot shown at 36. This slot is shaped to receive a turnable crank element 31, the latter being fixed to or formed with the inner end of" a journalling stud 38 carried by one of the frame side bars 2. The outer end of the stud is formed with an operating arm 39, which may be manually operated to rock the element 3'! and thereby permit of the shifting of the latch between active and inactive positions, as shown in Figs. 6 and 7. Further, the periphery of the latch includes an pawls'3I, in order'that the latch will'serve to hold the stop pawls out of engagement with the ratchet teeth of the drum to permit of the rotation of said drum in a cable unwinding direction.

When the latch is inactively positioned, as illustrated in Fig. 6, and the drum II is rotated to wind the cable thereabout, the crank element 31 prevents oscillation of the latch when the lever is oscillated forwardly on its active stroke through the contacting of the pin 4| with the finger 44 of the latch. By so limiting. movement of the latch, the latter cannot rock about the axis of the drum I I to cause engagement between the pin 43 of the stop pawl and the indentation or socket 42 of the latch. Therefore, the stop pawls will be maintained in normal engagement with the ratchet teeth of the drum, preventing reverse rotation of the latter to unwind the cable. However, when it is desired to release or reduce cable tension, the crank element 31 is rocked so that it will assume the position disclosed in Fig. '7. When in this position, a longer forward stroke may be imparted to the lever, permitting the pin M to engage the finger '44 of the latch and rock the latter downwardly beyond its position as illustrated in Fig. 6. This enables the rear portion of the latch to be moved upwardly so that the socket or indentation 42 engages with the pin 43 of the .stop pawl, thereby rocking the stop pawl assembly and removing the same from engagement with the ratchet teeth of the drum, as in Fig. '7.

During this reversing operation, it is also necessary to maintain the feeder pawls I I out of engagement with the drum ratchet teeth upon forward oscillation of the operatinglever, and

yet' to permit the feedlpawls to engage with said ratchet teeth when the lever!ismekedmanwardlya: so that the dnuml maytumrin unison 1 with the: rearward movement ofthe leveniz This: is done? bwmeans of' a-canr 4 5w Thelatter mayberormedl from" a flat) plate of metal shaped so that its; pe'-- ripheryprovides -aw lift section 462 a: shoulder: shown at 4'l 'and aspin-receiving recess 4'85. Gene trally, the body of the cant is formed with alcire' cular opening? in which} is received onefend ofiftliei drum hub; the cambeing disposed on the opp'o site side of said drum asregardsz the latch wii 'I'hecam is urged to rotate in ananti '-c1ockwvise= direction, as it is viewed in Figsz 8 and'9; by;meanss of a wire spri'ng 492: One end'of this 'spring isE anchored to a stud 50; carried Iciy the fran'ie'z1; whilethe outer orfre'e end ofi th'espriiig has coirtact" with an indenta-tion 5 provideddn; the outei" margin of the-cam; Afinger -52 formed atgthe= outer end- 'ofthe detent "2 8; is: adapted for 'engage 1 ment with ithe shoulder fl ofthetcam wheng-the ment" between thzouter ends of the: feed? pawls anditheratohet teethtakes place. Then; when;

the operatingleven isswungsrearwardly, reverse 7 rotation. either drum: is effected throughl thezten with. the swinging" of the lever onmits rearward:

stroke. When. the. cable tensionz isibeirig. released; or reduced; it is necessaryito rock the lever rear+ wardly to itsrextreme limit so: that thedetent? l'ever is 'rocked towardstl ie rearfofthe-fnameysush i rearward movement or theleverl oausingr the detent to press downwardly on the shoullien'of thef Cami revolvingthe latter sothat? it will assume when the lever-reaches substantially thevend of its rearward inactive or return stroke". In this position, the feed pawls 'havenormalengagement with the ratchetteeth ofthedium; so that'whem the? leveris rocked forwardly on itsaetiv eor operating lever is rocked' to j the" extreme limit of its rearward :or returnstrol re: When thisoccurs;

gagement'with thegshou'l'der M of the camthrough an automaticoperat ncausedbytheridingof'a upperted ge and at the reaiforone ofthe sidebars 2,!sgeiFi'g: 3.. The wipingengagement "between of; its spring 49,, so that the cam-moves to its active position as shown'in" Figrllj turning rnovement" of the cam inresponse 'to the action the" spring 49: being limited hy the engagement of the shoulder; of the oamwith a stationary stop 55, the latteflprojecting"inwardly and laterallyl from the adjoining framefiside' bar. When in: the; position shown in Fig." 9'; unwinding-ofthe cable is prevented by the stoppawls 39% forward swinging movement of thedever; tl'ie feed pawlsf I T are "kept I out of engagement with the at its'outer'end with a laterallydirected stud 5 maybe released fromzengagement with the shoulfn. der of the scam kithroughthe: actionlof the" pins- 53 'and the inclinedframe surface 54; This) is; done in: order that thecam: Willi be:re'leasede from engagement" with the 'detentv andiwill turn: forwardly under the action of; its: springzxdfi; to raise the feed pawls prior to: initiation! ofv forward? swinging movement on the part of: the operating: lever; When the Windlass is beingtluseditox wind? or wrap the cablegabout thedrum, the lever'isznot" swung backquite as far om its inactive: stroke is done when'the cable l'S tOabEl unwoundi from:

the drum, since irrtlie \vindinguoperation, the n feed pawls :are; maintained "atlalll times in con? tactwith' the ratchetvteeth of the; drum, and the cam merely rocks to a: sufficient? extent about itsl journal support to movelin unison; both forwardly and backwardly; with the -operating: lever. v

In releasing'tensiom orload ozrf'the cable-dtha operation may be summarized as follower The adjustable stop.- or cranki element 31', through manipulationof the:armv39, is. rocked: toaassuma the position disclosedin: Fig: 7, so thatwhen the:

handlerfl of the operating lever: ZIuis swung'fullyi forwardlyina clockwise direction, asiiviewedini Fig: 7, the pin 41 engages the latch finger. 41handi slightlyrocks the latch' aboutits' fulcrum mountzin'g Hi. This rocking movementpf' thelatclr'is sufficientto bring 'theindentation 42; on thezup' per marginal edge of the latch; intoregistration't with thexpin' fl of the stoprpawlsd Ir. "Ihis actionr results in elevating the" outer-l sends ofuthe stop! pawl's; so that theyarewremoved from engagement with: the teeth lfilofrthe: cable drum, thereby admitting of turningmovementv of the" drum: in.

amanti-clo'ckwise direction; asVieWe'd in: Fig; 2;;

to release-or. reducetension. or load'ton tlie cabletfii Following? adjustment of. the orankrelement: 351

to provide for the operations: describedxin) the."

immediately preceding? paragraphp and before forward movement of the handle; the latter isa first moved to its'ext'reme rearward limit of move;-

*mentin anpanti-elockwise direction; as viewed in 1 to 3; so=thatthe pin fi3 'will' engage the-i sharply incli'ned surface id of the frame" I. This moved from engagement with: thefshoulderflfofi the cam 45, withithezresu'ltthatsaidcam turns forwardly, independently of the operating lever; in an anti clockwiseadirection'; ais;VieWed im Fig? 8",.

I underthe action ofthspring 49;tliisindependa cam; thereby-' spacing the fe'edpawIs from'the ratchet teeth of the "cable drum) Before the op erating lever reaches the end or its forward t Atj this time; the feed pawls willhave cl'ea-red theliftsect'ion of the cam 45, so thatreengageem? movement of thei earn: being: limited? by" the" engagement of the shouldenfiit: with the frame carried stopt pin 56". When: thereafter; the level? 2| i's rocked forwardly iri an anti-clockwise di motion; as viewediin F'lg: ejthesurt region toot the cam isilocated so that'it is' engaged by thew pin 5'l off the feeding pawl I l; maintaining the latter'substantially throughout the full extent of such forward movement; removed from contact" with the ratchet teeth l6 ofwthetc'able dltunn thereby preventing the drum iromkrotatingtimai direction winding the cable thereabouti;

At the end of this forwardly advanced stroke of the lever 20, the back pawls 3l'are lifted from engagement with the ratchet teeth it by the movement of the latch ,33 to the position shown in Fig. 7. is removed from engagement with the lift region 46 of the cam 45, and the outer ends of the feeding pawls H, by the action of the spring 25, are reengaged with the ratchet teeth of the cable drum. The tension or load forces on the cable are then operative to rotate the cable drum in a direction to reduce or release cable tension. However, such forces are resisted or regulated by the operator manipulating the handle 24, who

permits the handle to be gradually rocked in a rearward direction, clockwise as viewed in Fig. 9. Before the rearward movement of the handle or yoke lever is initiated, the finger 52 of the detent 28 will have established reengagement with the shoulder 41, so that as the handle is permitted to swing rearwardly, the cam 45 will move in unison therewith until its movement is finally arrested by the lowermost of the shoulders 55 contacting the stop pin 56. If further release of cable tension is desired, this cycle of operations is repeated until a desired state of tension in the cable has been reached or until all tension latter about the drum, it will be understood that the rearward oscillating strokeyof the lever 2!} is not as long as the same stroke when employed to release cable tension. The short stroke prevents the finger 52 of the detent 28 from being disengaged from the shoulder 41 of the cam 45, thereby causing the cam to swing on its axis H1 in unison with the forward and rearward swinging movement of the operating lever.

It will be evident that the present invention provides an improved hand-operated cable windlass in which controlled rotation of the cable drum is effected in both cable winding and unwinding directions. Tochange over from one operation to the other, it is merely necessary for the operator 'to turn the crank element 31 so Concurrently therewith, the pin 5'1.

that the latter will occupy one or the other of I its two operating positions. Otherwise, the operation of the Windlass is effected through the manual oscillation of the lever. Such reversal in the operation of the cable drum is obviously highly desirable in portable manually operated windlasses of this category, the reversible feature adding materially to the usefulness of such tools.

The bottom of the ratchet wheel I6 may be covered by an arcuate guard 60, shown in dotted lines in Fig. 2. This guard is adapted to be carried by the frame I and is used to prevent dirt or other foreign matter from collecting in the teeth of the ratchet wheels when the Windlass is dragged over or rests on the ground.

While I have described and illustrated apreferred form of my improved Windlass, nevertheless, it will be understood that the same is subject to considerable variation in its structural design, and I thereforedesire to include within the scope of the invention all such variations or modifications falling within the scope of the appended claims. i

I claim:'

1. A-windlass comprising a frame, a cablecarrying drum rotatably mounted in said frame, said drum being provided with peripheral ratchet teeth, an oscillating lever pivoted at one end to said frame, a feed pawl movably carried by said lever for engagement with said ratchet teeth and operable upon the oscillation of said lever through its active stroke to rotate said drum in a cable winding and tensioning direction, a-stop pawl movably carried by said frame and cooperative with said ratchet teeth to hold said drum against rotation during oscillation of said lever through its inactive stroke, a manually adjustablelatch.

actuated by said lever and operable when actively positioned for maintaining said stop pawl out of.

engagement with said ratchet teeth during movement of said lever through its return stroke, and cooperative cam-controlled means for maintaining said feed pawl out of engagement withsaid ratchet teeth when said lever is oscillated on its forward stroke, said cam means being such as to reestablish engagement between said feed pawland said ratchet teeth at the end of the forward stroke of said lever.

2. A Windlass comprising a frame, a cable carryin drum rotatably mounted in said frame, said drum being provided with peripheral ratchet teeth, an oscillating lever pivoted at one end to said frame, a feed pawl movably carried by said lever for engagement with said ratchet teeth, a stop pawl movably carried by said frame for cooperating with said ratchet teeth, a reversing latch movably supported in said frame adjacent to said stop pawl, manually adjustable means for positioning said latch so that in it active position of operation said latch contacts with the stop pawl to withhold the latter from engagement with said ratchet teeth, a detent pivotally carried by said lever, a cam turnable about the axis of said drum, spring means tending to rotate said cam in one direction, said cam being, rotated against the action of said spring on, the return stroke of said lever through the engagement of said detent therewith, and means operable upon oscillating movement of said lever on its return stroke to move said detent out of engagement,

with said cam, whereby to cause the latter. to rotateunder the influence of said spring means to a position lifting said feed pawl from engage-,

ment with the ratchet teeth of the cable drum upon forward movement of said lever.

3. A Windlass comprising a frame, a cable drum rotatably mounted in said frame, said drum being provided with peripheral ratchet teeth, an opere ating lever pivoted at one end to said frame, a

a feed pawl movably carried by said leverand adapted for engagement with said ratchetteeth, a stop pawl movably carried by said frame and adapted for engagement with said ratchet teeth,

ward stroke of said lever when said latch device.

is actively positioned.

i. A portable ratchet operated Windlass, comprising a frame, a cable-carrying drum rotatably mounted in said frame, said drum being formed 2,363,138 with peripheral ratchet teeth, an oscillatory operating lever pivoted at one of its ends to said 1 frame in offset relation to the longitudinal axis of the drum, a feed pawl pivotally mounted on said lever, said pawl having its outer end movable into and out of engagement with said ratchet teeth, a laterally projecting element provided at the outer end of said pawl, a stop pawl pivotally carried by said frame and cooperative with 10 in said frame forturning movement about the said ratchet teeth, a cam pivotally mounted \m'thaxis of saiddruni, said cam being formed peripherally with a lift section, a detent pivotally carried by said lever having its free end engaged 1 with said cam to cause rotation of the latter when said lever is oscillated in one direction; spring means opposing rotation of said cam by said detent and lever, and means operative upon the lever reaching the end of its cam-turning stroke to release the cam from engagement with said detent, whereby to cause the cam to return to its normal position and during such return to bring its lift section into contact with the laterally projecting element of said feed pawl-in order to hold the latter out of engagement with said ratchet teeth during the next succeeding stroke of saidlever.

5. A Windlass comprising a frame, acable-carrying drum rotatably mounted in said frame, said drum being provided with peripherally disposed ratchet teeth, an oscillating lever pivoted at one end to said frame, a feed pawl movably carried by saicllever for engagement with said ratchet" teeth, a stop pawl movably carried by saidframe and cooperative with said ratchetteeth, the outer end. of said stop pawl being provided with a lateral extension, a latch arranged between one end of said drum and said frame for limited osciltion through adjustment of said crank element,

the movement of said lever at the end of its'active stroke will cause said, pin to engage one of the endwalls of said recess to rock said latch to a position causing the socket of said latch to receive the lateral extension of said step pawl,

thereby removing the latter from and holding i the same out from engagement with said ratchet teeth. y

6. A Windlass comprising a frame, a cablecarrying drum rotatably mounted in said frame, said drum being provided with peripherally disposedratchet teeth, an oscillating leverpivoted at one end to said frame, a feed pawl movably ,vided with a lateral extension, a latch arranged i 1 carried by said lever for engagement with said ratchet teeth, a stop pawl movably carried by said frame and cooperative with said ratchetteeth, the outer end of said stop pawl being probetween one end of said drum andsaid frame for limited oscillatory movement about the axis of shift said latch between stop pawl actuating and releasing positions, saidlatch being further providedwith a pin-receiving recess, a pin projecting laterallyfrom said lever for movement in said recess, whereby when said latch occupies its pawloperating position through adjustment of said crank element, the movement of said lever at the a d end of its active stroke will cause saidpin to engage one ofthe end walls of said recess to rock i said latch to aposition causing the socket of said latch to receive the lateral extension of latory movement about the axisof said drum, one

end of said latch being formed with a socket for the reception of thelateral extension formedon said stop paw1, a frame carried manually turnable crank element disposed in a slot provided in saidlatch and operable to shift said latch between stop pawl actuating and releasing positions, said latch being further provided with a pin receiving recess, and a pin projecting laterally from said lever for movement in said recess, whereby when said latch occupies its pawl-operating posij said stop pawl, thereby removing the latter from and holding the same out from engagement with said ratchet teeth, and cam means arranged between the; other end of said drum and frame, said cam means being mounted for limited oscil- 3 latory movementabout the axis of said drum and operable automatically to maintain said feeding pawl out of engagement with said ratchet teeth upon movement of said lever inone direction hen said lever is actuated to turn said drum it in a direction releasing cable tension.

, EDWARD BROWN MOORE.

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