US1670330A

US1670330A - Winch

Info

Publication number: US1670330A
Application number: US747655A
Authority: US
Inventors: Wilson John Hart
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-11-03
Filing date: 1924-11-03
Publication date: 1928-05-22
Anticipated expiration: 1945-05-22

Description

May 22, 192s.

J. H. WILSON WINCH Filed Nov. e, 1924 3 Sheets-Sheet l ao: nu;

May 22, 1928 1,670,330

J. H. WILSON May 22, 1928. 1,670,330

J. H. wlLsoN WINCH Filed Nov. 3, 1924 5`Sheets-Sheet 3 Patented May 22, 1928.

Joan HART WI'LsoN, or BURKBURNETT, TEXAS.

WINCH.

Application` led November 3, 1,924. i Serial No.I 747,655.

Tlie present invention relatesto Winches, andr `more particularly to self-propelled Winches used in oil field operations in `rais-` ing 'from and lowering into oilwells tools, tubing, rods and Vother implements, al-

Y though it may be also used for general hoisting and similar operations.

`It is an object of this invention, generally stated, to provide 4an improvement. on the type ot' winch disclosed in my prior Patent No. 1,499,045 and in Athe pending applica `tion iledby ine on May 25,v 1924, Serial No.`

s mensa i, i

More Ignarticularly,` it is an object of this invention to providein a. winch construction similar to that described in the above patentk a `novel form oi reversing mechanism wwhere` V by the drum maybe positively reversed in o rderito yaccelerate lowering operations.` i

Another object oi' the invention consists in the provision of an attachment to be used on the drum for driving an auxiliary hoist- .ing mechanism. i

i A still further object ofthe invention consists in the provision of an improved bearing member for the winch drum having provision thereon for retaining one end of a booniing-dcwn chain. .It is to he understood thatxin the accompanying drawings, there is disclosed oneembodimcnt of the invention showing by way ot example the preferred embodiment thereof, butvthat thedesign and arrangement of the component parts and elements may be greatly modified without departing from the spirit and scope of the invention.

`In said drawings: Y .i

\ Figure 1 is a planview of the improve Winch mechanism attached to au Fordson tractor; f

FigureQ is a right `side elevation thereof showing the right front and rear wheels removed; y

y Figure 3 is a longitudinal vertical section on line 3--3 of Figure l; l i

Figure. 4 is a transverse vertical section on brokenlines 4 4 of Figure 3;

`Figure 5 is va side elevation partly'in vertical section oi the detachable drum sprocket;

Figure 6 is avertical section on broken `line 6-G of Figure 5;7

Figure 7 is asectionion Figf ure gand i i 'Figure 8 is a transverse vertical section through the drum `sprocket bearing taken on line 8--8 of Figure 1. Y i

The tractor .illustra-ted in the drawings is of vthe well known Fordson type, and the advantages of adapting this tractor for the ,purposes intended, from the standpoint of economy and simplicity-of construction, will be apparent to those skilled in theart. However, the invention is limited to no particular 'form of tractor, and while in the embodiment herein disclosed,`it is particularly adapted to; a` wheeled tractor, many of its Jfeatures vmay be incorporated if desired in a tractor of the track laying type. i

The cranlncase of the trac-tor is indicated at 10, its engine ,block at 11, fuel oil tank at 12, radiator at 13, rear `axle housing at 14:,

rear wheels at 15 and front Wheels at 16. `At

17 is shown the steering wheel, and at 18 the drivers seat. A number of the other features ofthe tractor which do not contribute to the operation v.oi' the present invention havebeen omitted for the sake ofclearness.

The winch drum is indicated at D, and the axleupon which this drum is nonro tatably secured extends transversely of the tractor and its ends are journaled in the babbitt lined bearings 19. As best shown in Figure S, each bearing comprises a substantially cylindrical portion 20 having va iiattened surface 21 on the bottom thereof adapted to rest upon horizontally extending side 'ramemembers 22and `has the de-A pending iange 23 having a transverse strengthening web 24 connecting it'to the lower outer section oi' the'cylindrical pol` tionr20. This flange 23 is adapted to be boltedftofthe web of the channel member 22 forming the horizontal side frame. For convenience in babbitting the bearing, the end is closed as shown at 25 and provided with the central threaded opening 26 through which may be passed a threaded rod having a conical point ladapted to seat within the drilled centerof the end of the shaft and thus support it centrally of the bearing, and when it is in this position babbit may be poured in to form the wearing surfaces. Upon; the upper surface `of the bearing member is cast the integral lug 27 slightly outward of the ilange 23 and intended to retain in position a chain such as 28, which passes over the topy of the bearing and beneath a timber or sill as 29 for the purpose of booming down the forward end of the tractor as is well known in the art. By providing the lugs on the bearing members and passing the chains over these,

members, the strain is transmitted directly to the shaft of the drum and not upon the side frame members and the fastening means holding the bearing to these members.

The side frame members 22 are, in the particular embodiment illustrated, formed of rolled steel channels with their flat faces outward. They project for a considerable distance in advance of the tractor, and the forward portions of these members are horizontally` disposed, while the rearward portions are inclined downwardly, as best shown in Figure 2. They are provided at the lower rear lends with inwardly oil'set portions bifurcated as at 30 in order to rest on prepared seats on the rear axle housing. These ends are fastened to the rear axle by means of U-shaped bolts 31, surrounding the same, as shown in Figure 2. Atk their mid-points, the side `frame members kare supported `by the inclined upright braces 32, the lowei ends of which are bolted to the crank case flange by bolts 33, and the upper ends lo the webs of the side frame members by bolts 34.

'Laterally extending tying-in members 35 secure the top flanges of the side frame members to the head of the cylinder block to prevent lateral spreading of these members. In addition, the side frame members are connected together by a transversely extending channel member 36 in advance of the radiator 13. A V-shaped brace 37, best shown in Figures 1 and 2. which has its upper ends spread and secured to the bottom flange of the cross channel 36, extends downwardly and rearwardly and has its lower endconnected to the crank case of the tractor by meansfof a longitudinal pin 38 which passes through the junction point of the two arms'of the brace 37 and through the ilanges 39 normally provided on the crank case of the tractor for the support of the usual front axle. The brace 37 is supplemented by a vertically extending brace comprising angle irons 40 having their upper ends secured to the cross channel 36 and their lower ends supported from the front axle 41 which is moved forward for this purpose. rllhese braces 37 and 40 support the forwardly extending portions of the side frame members 22 and transmit the weight of the drum and its associated mechanismto the frame and wheels of the tractor. The axle 41 is as usual 'mounted upon a longitudinal pivot 42 carried by the bifurcated arms 43 supported by the brace 40 and the lon itudinal members 44 which con nect it to tie crank case at the flanges 39, previously described, and at the point 45 to which the radius rods are normally attached, means such as 46 being provided on these members 44 to anchor the rearward end of the radius rods. It will thus be seen that a simple and light frame mechanism 1s provided for supporting the winding drum, yet lwhich frame is braced securely against all possible strains which may be imposed upon it. This frame, in addition to supporting the winding drum, supports the brake mechanism, the counter shaft, and other members of the control mechanism, as will be hereinafter more fully brought out.

Referring now more particularly to the winding drum itself, it will be seen that this drum comprises a cylindrical barrel portion 47 having the radial end flanges 48 provided with means for mounting the drum upon the previously mentioned shaft, and having also at their outer periphery the cylindrical brake drum portions 49 provided with the outer edge flanges 50 to prevent the

brake bands

51 and 52 from slipping laterally ol of the drums. The left hand brake band constitutes the emergency brake, and the right hand one the foot brake. To the outside of the left hand flange of the brake drum is secured a drive sprocket '53 by any suitable means, whereas the right hand end is provided inwardly of the brake drum with what is commonly known as a step-up drum 54 of larger diameter than the central drum portion 47 for rapidly taking in cable.

Extending transversely between the side frame members 22 and beneath the radiator reserve tank, is the counter shaft 55 having its ends rotatably mounted in bearings 56 bolted to the side frame members. Free to rotate onthis shaft is a sleeve 57 having rigidly connected therewith the sprocket 5S connected by chain 59 with the sprocket 53 on the end of the winding drum, the inner face of this annular sleeve constituting a clutch face. A second sleeve 60 is splined to the shaft 55, and the outer face of this sleeve constitutes a corresponding clutch face adapted to cooperate with the face of sleeve 57. Due to its splincd connection, sleeve G0 rotates with the counter shaft at all times, and may be moved longitudinally thereof by means of a bell crank `lever (il having a bifurcated end 62 the arms of which lit in a circumferential groove63 in the sleeve G0. This lever is pivoted at 64 to a bracket on the tying-in member 35, and the transversely extending arm 65 shift lever 6G, pivoted conveniently near the drivers seat to the left hand frame member 22, through the link 67. Movement of the i sleeve into engagement-"with the sleeve 57' Loman@ causes operative conneetionrof the shaft 55 on `the winding drum through the "chain 59,

ofthe handlever 66; n Upon `shaft 55 at` the thereof and just inside of the bearing inem- "ber 56, there is keyedor 0therw`ise .suitably secured, 4a largesprocket 68 which. is con nected by means of a chain 69 with `al smal-l sprocket 70 on the power take-oli shaft 7l ofthe tractor. Powerzis therefore communicated through the two chains 69and 59, counter shaft 55 and the clutch` mechanism to the drum, and becauseof the construction of the' clutchmechanism, the operator may quicklyi andA conveniently connect the `power shaft 7l tothe drum at any time.

Atitimes, it may be `desirable to take power from 4the `coilnter shaft `55, since this runs at a slowerv speed than the power take-olf ofy the tractor, and- `forfthis purpose the shaft 55 `is extended on the right hand end beyond the bearing and provided with acat` head 72 or anyother suitable means.

any suitable composition, such as compressed paper` clamped between two reinforcing discs 74 all mounted u on a vbeasrin@r sleeve 75 which is preferably `formed of bronze. The inner end of this bearingsleeve, i as' v shown in `Figure 4, has rigidly attached thereto a small sprocket 76 which is adapted to be driven by the chain 77 from` Ythe sprocket 8 mounted upon the counter shaft 55 closely `adjacent `the large; sprocket 68 thereon, by means of which it is driven from the power takeoff.`

`This friction member or disc, it will be ob#- served, is driven at all times fromvthe countershaft, but is adapted to be `engaged with the surface of the brake drum 'on the right hand end of the hoisting drum only at such times as the clutch members 57 and 60 are disengaged. For the purpose of engaging and disengaging the ,friction disc with the surface of the brake drum, as shown in Figure, the bearing sleeve 7 5 is journaled upon the shaft 79which has the `eccentrically disposed, reduced ends 8() journaled for'rotation in the two 'vertically disposed portions ofthe bracket y81', which `will be'laterdei right hand end scribed. `The outerreduosd end isfex-f tended and provided* with a vertically extending actuating arm 82 which is connected by means of' a` link B25-tothe!y hand ,lever `84 plvoted `at k upon the outside of the right hand framefmember 22nea'r the; drivers sent.

A spring 86 serves to retract the connecting` rod 83' and so position the eccentric shaft' 79 that the face ofthe frictionl disc73` is with` drawn from contact with vthe face of theA brake drum. When the operator desires te` reverse the direction ofV motion of tliewinding drum, he firstv disconnects, by meansof:

the lever 66, the: two parts 57 and 60 ofthe forward drive clutch, and then pulls rear-3 wardly on the-lever 84 andthus ,rotates the eccentric shaft 79l in a counterfclockwiee direction, as viewed in Figure 3, and thus causes the face of theI friction disc` 73m engage the face of the brake drum 49; and rotate the windingY drum in a@ direction op-E posite to that normally transmitted toit byf means of` the chain59, sincethe" friction disc 73 is driven in the same direction as? the counter shaft and transmits motion in an1 opposite direction to the* brake drum.` The effort to maintain contact'between the two" members of the friction drive is supplied by the operator so that immediately upon release of the lever 84, the spring 86 will` retract the lever 82 and disconnect the fric tiondisc and the brake drumv The lowerend of each brake band 51 and. 52 is connected by suitable rivets to a rod 87 disposed tangentially to the braking surface and having its outer end threaded and exi-- tending through a suitable aperture in: a bracket 88 riveted to thecross channel member 36. i Suitable nuts 89 on'oppositesides of brackets `88 permit rods? to be longietudinally adjusted so that the tightness od' the brake bands may be: quickly adjusted. The upper ends of the` brake bands are looped, and that of the left "hand one 552 ex? tends around a pin passing 'through aper-u turesin the parallel arms 90 rof theshort brake lever 91, which is loosely mounted upon the brake shaft 92 which .extends traneversely of the machine and has its ends rotatably mounted in bearings 93 and 9emespectively. Bearing 93 is mounted upon the left hand frame member, while: bearing' 94 forms a part of the member which supportsl the friction drive. Collar 9'5 is secured by a set screw on the shaft 92' teprevent lungi@ tudinal movement of the member 91, which is provided with a lever army 96, theend' of! having a suitable latchl and quadrant for retaining it in any desired position.

The right handbrake .51 has its upper end loopedand` extended 'around` the pin 99 pivoted betweenthe spaced arms 100 of the brake lever 101 whichis securely keyed or otherwise suitably `fastened .to the short brake shaft 102 pivoted in the upwardly extendingbearingmembers103 integral with the members which form the bearings for the friction' drivel disc. The shaft `102-is connectedfor rotation withthe brake shaft 92by meansof thelever

arms

104 and 105 rigidly secured to the two shafts respectively,"n0rmally parallel and connected together at their ends by the link'105 so that any partial rotation given 4to shaft 92 will be trans mitted` to shaft 102 and thence .to the pin 99 to effect operation lof the brake. Shaft 92 is rotated by means ofthe arm 106 securely fastened thereto outside ofthe bearing member 93. To thefupper endiof'this arm 106 is pivoted theforward end `of a link `107,the rear end of which is in tur-n pivoted to the upper endl of arocker arm 5108 rotatably mounted upon a'sliaft 109 supported in bearings 110 secured to the side frame member. Rigidlyv connectedfbyfmeans -of the short shaft109 with rocker arm 108, but at a slight angle thereto, is a vsecond rocker arm 111,*and to the upperend ofthisarm is pivotally connected a link 112, the lower end of which is in turn pivotally connected tov the'downwardlyextending flange 113 of a foot pedal 1141which is mounted to `rock on a short shaft 115 suitably supported be tween the rear axle housing and one of the side members of `the frame. A- spring 116 having one end vconnected to the'drum shaft bearing and the other end connected to lever 106 tends to draw the lever forwardly and the foot pedalupwardly from its limiting stop, not illustrated, torelease the brake. Depression of the foot brakeI pedal causes tensioning ofthe spring and applies the foot brake, and upon release of the pedall by the operator, the spring will 'act to `draw lever 106 forwardly and hence to cause release of the foot brake'.- f

It will-be noted that theeonstruction of the left or hand'brake is exactly similar to that disclosed -in the above mentioned application, but .itl has beenn found necessary to' change the construction of the right hand or footbrake to provide means for the accommodationcf the friction drive mechanism whiclroperates at the `point on the brake drum occupied by the brake band. v The` member. which combines the bearings for the-friction drive dise and the brake shaft 102 comprises a unitary castng 81 having the pair of parallel sides 117 and 118 connected together near their bottoms by T- sectioned bar 119, and at theirrear side, in the same horizontal plane as the friction disc bearings, by the T-shaped member 120 and near the top by thefbar 121. The side members 117 and 118 are provided with the

feet

122 and 122 respectively, the latter of which has the downwardly projecting flange 123 whichis adapted to be secured to tie outer face of the side frame member, while the foot 122 rests upon and may be bolted to the upper flange of this side member. An additional right-angled bracket member 124 has one arm thereof bolted to the inner face of the transverse channel 36 and is provided with the reinforcing web 125 between the vertical and longitudinal arms. The upper face 126 of this reverse bracket member is adapted to support the foot 122 which is bolted thereto in any suitable manner. The edge of this foot 122 which is in front of the channel 36 is provided with a vertical hole throu h which passes the bolt 127 provided with t xe nut at the upper endlthereof and the ring shaped lower end through which the bolt 128 which fastens the bracket124 to the channel member 36 passes, thus serving to hold down the inner forward corner of this bearing member. gral therewith the bearing member 94 for the brake rod 92. The two sides 117 and 118 of the main bearing member are provided of the length of the machine in order that any wear on the friction disc may be taken up by sliding its bearing member toward the brake drum. In order towmore readily effect this sliding, a bracket 129 is secured to the upper face of the right hand frame member and provided with the bolt 130 threaded into thevertical arm thereof, which bolt bears against a projection on the side 118 of the bearing member to press it forwardly, a lock nut being provided to retain the bolt in its desired position. There is sufficient slack provided in the chain 77 to allow this adjustment and also to allow for the rotation of the eccentric shaft'of the friction disc to bring it into engagement with the brake drum.

As previously mentioned, it is sometimes foundk desirable to drive an additional drum separate from the winding drum on the winch, since this may give an added gear reduction and considerably increase the pulling power of the winch. For this purpose a sprocket may be mounted on the winding drum of the winch and an additional sprocket on the drum or bull wheel of the derrick. Since` this bull wheel is usually of rather crude construction, the reverse previously described is necessary to drive it when it is desired to unwind cable therefrom. In Fig- The bracket 124 has formed

inte uros

1,5, 6 and 7 is disclosed `an auxiliary lsplit sprocket which maybe conveniently mounted upon .the winding drum when it is desired to use the construction 'just eX- plained..` i

The auxiliary sprocket 131 is provided with the elongatedV hub 132 having the circumferential end flange 133, and both'the `hub and sprocket are divided in two parts along a diametrical plane, `as shown at 134 in Figure 5, in orderv that thcy'may be readily fitted over the barrel 47! of thewinding drum, the bore `135 through the hub being of such a diameter as tol closely fit upon this drum. The flange 133 is widened at four points, such as at 136 and longitudinally drilled for the reception of bolts, by means* of `which the flangefcanabe lboltedto the inner lefthand end of th-e brake drumstructure to retain the sprocketin position and prevent it from yrotating in respect to the drum.

The .two halvesof `the inner orsprocket ,end offthe construction are adapted to be held :ber 137 adapted tofit into aislot138 inthe together by the interlocking mechanism disclosed in vterlocking constructions are aprovided, one at leach radial .joint 134, but one of which `illustrated for thewsakeiof example since they are identical.` vOne portion of theigures 5, `Brand?. Two such in- `sprocket` is provided :with 'a projecting memcorresponding member, so that the two halves `may be brought `together about the dfrum`147 *and allow'. thevprojectionl 1137 to ernterthe slot 138,.afterwhicha tapered pin `139 may `he passedllon itudinally through correspondingholes in t e sides .of the part formlng the slotandinthe projection 137,

this pin `being retained in `position by cotter pri 140, as best .shown in Figure 7. c It is lieved that `this *construction is clearly illustrated in tliefclunvings` andfurther de-v scrlpt'ion isnot necessary. However,it `may bey stated that `thetwo parts of the sprocket Fon theiwinch drum as :for pulling rods,

`may ,be readily separated `by withdrawing ythe two taperedV ypins 139 and removing the fioul' bolts which hold the flange 132 against jthebrfalre drum'.l The hub `portion is elon gated', as shown, in order .to space the sprocket :inmaterial distance rinwardfrom the brake" .drum `flange `to providefaplace for carrying spare cable or line when such a line is used The surplus line` which is not` used ,t `inthe operation; is always iii-fthe way, and

fitha'sWbeen fusual tofprovide'on the drum a divider, but in this case `the function is equally well 'performed by the sprocket.

slipping around onto the main "The tractor above on the end'` of the cable.

ferstep-uplmay be obtained.V

described may be driven; rapidly from `one oilwell or scene of op- `from an elevated block or fpulley `to the winch drum. The three controls of the winch mechanism proper may be easily operated by an inexperienced person. By engaging the clutch, the cable may be wound on the drum, andvwhen the clutch is released, the drum under .ordinary conditions -will automatically unwind due to the weight The speed of` lowering the tube or .rod will depend` upon the rotar-ding action which the operator .exerts on thedrum `by means of the bra-ke. By` means of thefemergency or hand brake,

kthe drum may be locked' at `any time. l In such cases where the weight upon the cableA is not su'liicient or where the friction of an additional winding drum will not cause unwinding .of the drum when the clutch lis released, .the operator by pulling uponthe lever 84 can effect engagement between the friction drive dise and the right hand bra-ke drumand cause the drum to be driven positively in a reverse direction, which motion may be stopped at any time by merely releasing the lever `84 which is then vpulled forward by the spring and applyingv the brake `if necessary. The use of the chain and sprocket connection between the power take-off shaft and the drum gives a lexi. bility and smoothness of operation not here- -tofore realized in selfspropelled Winches,

additional drum on a stationary derrick may be operated, if desired, by passing a chain between the two, and additional pow As previously |pointed out, the principles of the invention may be carried out in different ways, andthe self-propelled winch, above described and `illustrated in the accompanying drawings, is `given by way of ,example only. The design and arrangement of the component elements of the invention maylbe varied and modied considerably without departing from the spirit and scope of the invention. i i Hav-ing thus described my invention what ,IV claim as new and desire to be secured by `Letters Patent is: L` Tfhespare line, when itis :desired touse a part of it, may besi'mplycrossed over be-* tween the teeth of thesprocket which pre` vente4 it from drum.`

vtion, a winding drum journaled for rotation about a fixed axis, a, brake drum rigidtherew1th,:a` brake band surroundingthe maior portion of ksaid brake drum and .adapted to 'i cooperate therewith to retard or 4stop its movement, asource of power, a countershaft driven thereby, means including clutch mechanism to drive said drum in the same direction as said countershaft, a friction dise constantly driven from said counter-shaft, and means enabling said dise to be brought into engagement with said brake drum at a portion of its periphery free from said brake band, to drive said drum in a reverse direction.

2.A self-propelled winch mechanism of the class described, including in combination, a rotatably mounted winding drum, a

brake drum rigid therewith, a brake band surrounding the major portion of said brake drum and adapted to cooperate therewith to retard or stop its movement, a source of power, a counter-shaft driven thereby, means including clutch mechanism to drive said drum in the same direction as said counter-shaft, a friction disc constantly driven frompsaid rcounter-shaft, an eccentrically mounted shaft for said disc, and means to rotate said shaft to engagefsaid disc with said'brake drum, where it is free from said brake band to drive it in a reverse' direction.

3. Apself-propelled winch, including in combination, a rotatably mounted winding drum, a brake drum fastened thereto, a brake band adapted to cooperate with said brake drum, a source of power, a countershaft adapted to be constantly driven thereby, a sprocket thereon, a sprocket attached to said windingk drum, a chain connecting said sprockets, means to free said vfirst sprocket from said counter-shaft, a friction discadjacent the periphery of said brake drum, a sprocket attached thereto, a second 'sprocket on said counter-shaft, a chain connecting said sprockets, and means to, at will, engage said friction disc with said brake drum. f i

4. A 4self-propelled winch, including in combination, a rotatably mounted winding drum,v a brake drum fastened Ithereto, a brake band adapted to cooperate withsaid brake drum, a source of power, a countershaft adapted to be constantly driven thereby, a sprocket thereon, a sprocket attached to said `winding drum, a. chain connecting said sprockets, means to free said first sprocket from said counter-shaft, a friction disc adjacent the periphery of said brake drum, a sprocket attached thereto, a second sprocket on said counter-shaft, a chain connecting said sprockets, and shiftable means supporting said .friction disc for rotation thereon, wherebyfsaid disc may engage the periphery of.l said brake drum to rotate said winding drum, said chain having sufiicient slack to allow movement of said disc.

5. A self-propelled winch, including in combination` a tractor, a source of power therefore, side frame members carried by "neve-,aac

`to said brake drum, means to continuously drive said disc from said counter-shaft,and means to at will engage said disc to 'drive said drum. A

6. A self-propelled winch, including in combination, a tractor, a source of power therefor, side frame members carried by said tractor, a winding drum rotatably supported between said frame members', a brake drum securedto one end 'of said winding drum, a

`brake band therefore having one end secured to one of said frame members, a countershaft driven from said source of ower,dis connectible means for driving said winding drum from said counter-shaft, a friction disc rotatably supported in bearings on one of said side frame members adjacent to said brake drum, means to continuously drive said disc from said counter-shaft, and means to at will engage said disc to drivesaid drum, the opposite end of said brake bandy having a connection said disc. t f

7. A self-'propelled winch, including in combination,- a tractor, a source of power therefor, side frame members carried by said tractor, a winding drum rotatabl supported between said frame members,a rake drum -with the bearings for -secured to one end of said winding drum, a.

brake band therefor having one end secured `to one of said frame members, a counter-t shaft driven from said source of power, dis- ,connectible means for driving said winding n drum from said counter-shaft, a friction disc rotatably supportedin bearings on yone of, `said sideiframe members adjacent to said brake drum, means to continuously drive said dise from said counter-shaft, and means to at will engage said disc to drive said drum, the opposite end of said brake `band lhaving a link connectionwith thebearings for said disc, andmeans to tension said band about the drum. i i

8. A self-propelled winch, including in combination, a. tractor, a source of power therefor, side frame members carried by-- said tractor, a winding drum rotatabl supported between said side frame mem ers, a brake drum ateither end of saidwinding drum, a brake band for each drum, each band having one` end secured tota frame member, disconnectible means for driving said winding drum from said source of power, a friction disc driven from` said source of power, bearing bracketsI mounted on one of said frame members and Isupportconnected to one of said brake bands, a sec-- ond brake shaft journaled between one of said brackets and the opposite frame mem ber, and means to rotate one brake shaft fromthe other.`

9. A self-propelled winch, including in combination, a tractor, a source of power therefor, side frame members carried by said tractor, a winding drum rotatably'supported between said side frame members, a brake drum at either end of said Winding drum, a brake band for each drum, each band having one end secured to a frame member, disoonneotible means for driving said winding ZU drum from said source of power, a friction disc driven from said source of power, bearing brackets mounted on one of said frame members and supporting said disc in proximity to the periphery of one of said brake drums, means to engage said disc with said drum to drive it ina reverse direction, a brake shaft journaled in said brackets, a brake lever on said shaft connected to one of said brake bands, a second brake shaft jour- `naled between one of said brackets and the opposite frame member, means to rotate one brake shaft from the other, a sleeve on said y second shaft, a lever thereon connected to In testimony vwhereof I hereunto allix -my signature.

JOHN HART WILSON.