US2272049A

US2272049A - Draft device

Info

Publication number: US2272049A
Application number: US371552A
Authority: US
Inventors: Loy D Hagenbook
Original assignee: Goodman Manufacturing Co LP
Current assignee: Goodman Manufacturing Co LP
Priority date: 1940-12-24
Filing date: 1940-12-24
Publication date: 1942-02-03
Anticipated expiration: 1959-02-03

Description

Feb. 3, 1942.

L. D. HAGENBOOK DRAFT DEVICE 4 Sheets-Sheet 1 Filed Dec 24, 1940 IIQVENTOR;

9P ATTORNEY D Feb. 1942 L. D. HAGENBOOK Filed Dec. 24, 1940 Ziz INVENTOR 22? BY 9 P ATTORNE Y Feb. 3, 1942. L. D. HAG'E'NBOOK DRAFT DEVICE Filed Dec. 24, 1940 4 Sheets-Sheet 3 7' k ATTORNEY' I z INVENTOR J0 ezzfiook J Y a Feb. 3, 1942.

L. D. HAGENBOOK DRAFT DEVICE v 4 Sheets-Sheet 4 Filed Dec. 24; 1940 INVENT R 'directionof rotation of, .t

motor to these winding drums, automaticallyr Patented- Feb; 3, 1942 I I E 1 Loy D; "Hagenbookj Chicago; 1 11.; assignjor t'o a Goodman- Manufacturing Comp ny, Qhicago, a

member. I v- Another object of my invention isjuto provide a novel drive and controlling connectionvfor 'apai rj of winding drums including means operativezto drive one drum and permit theifother. drumto, pay ofi cable against frictionlu'pon rotationgotf the drive motor therefor in'one direction; to drive the second drutnin ajWindingdiiectionQ' and permit cable tov be payed off the firsfln'ien tioned drum against friction bymerely reversing; the direction of rotation 'oi saiddrive motor.

A further object of my inventionist'o provide a draft devicein-cluding a pairof windmg'drums:

with a common motor for drivingthese drums; and a drive and controlling connection from this erable for rotatably driving one drum when motorqrotates in one direction and 'rotat driving the other drum when the direction rotation of the motoris reversed, and forposh; tivelfyholding both drums from rotation an unwinding direction, the instant the drive Other objects of my invention will appearfrorm time to time as. the following spe'cification pro ce'ed's and with reference to theaccoin drawings wherein:

Figure 1' is a view inside elevation'of a raft device construc'ted in accordance with my i errtic-n, withcertain parts broken-away-and cer f other parts shown in section; i

Figure 2 is a plan view of the device 'shownrin'. Figure l, with certain parts: broken awayt-and certain otherparts shown in horizontalisecti'onti Figure 3 is an enlarged:detailiviewiofithe con? trol: for the winding drums,. -'with certain parts broken away and certainother partsshownfizii horizontal section; J 1

Figures 4 and 5 are-enlarged. detailzviewsgiilusw trating certain details of the friction control for; the planetaries for driving th e winding drums;

Figure dis a detail View drawn to a somewhat;

i; along line l-'! of Figure 3;

Figure 10 isa sectional view taken "Th -windin i' I have fa sprocket l 9. secured tolthe outer s'ide s itten said than. Figures 4 and 5 illustrating certain details of; the control for the friction band for a: brake drum for one oi the winding drums;

Figure f1 is a sectional View taken substantially- Figure. 8 is an enlarged-sdetailviewillustrating certain details of the driving clutch for. the con. trolvmechanism for the winding drums;

'Figure 9i'ssa sectional view taken substantially along line 99 ofQ-Figure 3 and" I I substantially along line II fl l'llli of Figure 3', 1

Referring now particular to the drawings,v I the embodiment ofi'my; invention illustrated eludes generally inaba'se lli having amotor H mounted thereon, 'jad'jacent, one, end thereof; Said, base is provided s'withja pair ofparallel spaced "side trame gmembersv I2; 12 formingv a mounting fora pair of I winding drums, I5; f5, Y mounted;gb'etweenrxsaid side frame members on aligned;transverselyjextending shafts, I6; I6, and alsogformingfa"mountin'g for? the drive and contrbi means forsaid win in drums".

- The ishaitsj il 6,1 f6 arei nountedattheiri outer endsfirnsuitable supporting. osses formed inlthe 'sidejframe"meiiibersjj'z; f2, and are mounted at th'eir'inner endsfli r ia"supportingv I boss I 1 formed I8,Qproj"ett p y as herein, shown, each thereof by mea f studs and nuts; generally indicated by reference character 2 o, Said c sprockets are meshed with endless drive chains 2!, 2l', meshing with sprockets 24,. 24,. herein shown as being formed integral with s1eeves25, 25', mounted coa'xially of i a transverse drivesh-aft 26'v (see"Figure-"2),;. Each'sleeve 251s keyed to a sleeve :21, journaledfon sai'dl transverse shaft.

; Said shaft is herein shown as being rotatably driven from the'niotor H v v 19';mounted thereofiland provided with a drivby means ofia sprocket ing jaw 30'havin'g spaeedfapartiengagingjia-ces adapted toengag'e adog 3lflsecure'dto-said'shaft,

to permit. a predeterminect fi ee movementoiT said I [sprocket on said shaftzuponzreversai ofrotation ofsaid sprocket, beforesicausing said-sprocket to drive said shaft=.- The purpose of thiss'connectibn' is to permit-properspositioningof thecontr'ol mechanism for saidwinding drums before rotat ably. driving thelshaft 26, in a' manner which will hereinafter more fully'appeari-asrthis specific-a tion proceeds. A; chain andsprocketdrive: 32

serves: to connect, said sprocket; with said motor.-'

The sprocket 24, on the side' off the frame lid A brake drum 40, secured to the sleeve 25 and adapted to be engaged by a friction band 4|, is provided to hold said sprocket and the left hand winding drum from rotation. Theconstruction of the

planetaries

33 and 31 and the drive connections to the sprockets 24, 24 from these plane'- taries is similar, so only one of said planetaries need herein be described in detail.

The sleeve 2'! is herein shown as being formed integral with a cage 42 of the planetary geared reduction device 33. A planetary pinion 45 is rotatably mounted insaid cage and meshes with and is driven from a sun pinion 46, keyed on the transverse shaft 26. Said planetary pinion also meshes with an'internal gear 41, herein shown as being formed integral with a casing 48 for said planetary geared reduction mechanism. Said internal gear forms a reaction member for said planetary and is held from rotation by means of the friction band 34.

A novel form of control is provided for 'said planetaries, so arranged that when the motor rotates in one direction, one of the winding drums |5 will be driven in a winding direction and cable may be payed off the other winding drum under the control of friction; and when the direction of rotation of said'motor is reversed, the other drum will be drivenin a winding direction and cable may be payed off the first mentioned drum under the control of friction. Said control includes a cam shaft 49 arranged parallel with the shaft 26 and having cams 50, 5!, 52 and 53 mounted thereon, for controlling the application or release of the

friction bands

36, 34, 39 and 4|, respectively. Saidcam shaft is driven from a sprocket 54, herein shown as being keyed n the hub of the sprocket 29, through a chain 55 meshing with a sprocket 56 keyed on a housing and driving member 51 of a friction clutch 58, coaxial with said cam shaft. Said housing and driving member'is journaled on a sleeve 69, secured to a support portion 6|, herein shown as being formed integral with one of the side frame members l2 and forming a bearing support for one end of the shaft 49 (see Figures 1 and 3).

The operating and controlling connections from the

cams

59, 52 and 53 to the

respective friction bands

36, 34, 39 and 4| are as follows:

The cam 50 is adapted to be engaged by a roller 63 on the outer end of a rocking arm 64 (see Figure l). Said rocking arm is rockingly mounted on a transverse shaft 65 (see Figure 2). Said friction band is herein shown as being in two parts, connected together by a hinge 36a (see Figure 1). The upper end of said friction band is connected with an arm 66 of a bell crank. Said arm projects angularly upwardly and rearwardlyfrom the shaft 65, and is herein shown as being formed integral with the rocking arm 64. The connection from said arm 66 to said friction band includes a connecting member 61, connected to said upper end of said friction band and extending through-said arm 66.

Lock nuts

68, 68 are provided to hold said connecting member in engagement with said arm. The opposite end of said friction band is connected to an arm 69 of said bell crank, which extends angularly downwardly from the shaft 65 in a direction towards the motor II, and is herein shown as being formed integral with the arms 64 and 66. Said arm 69 forms a seat for a preloaded compression spring 19. .The connection from said friction band to said arm includes a connecting member transversely pivoted to said lower end of said friction band and extending through 7 said seat and the open center of said spring.

A retaining member 12 abuts the end of said spring opposite from said seat and is held in engagement therewith by means of a nut 13, threaded on said connecting member. A shoulder Ila is on said connecting member H and member 61 is twice the lever arm from the center of said shaft to the longitudinal center of the connecting member H.

A lug 15 projects from the hinged portion 36a of said friction band in a direction towards the winding drums |5, I5. A tension spring 16 is connected at its lower end to said lug by means of a link 11. The upper end of said spring is connected with a member 19 threaded in a support member 19 extending across the side Walls I2, l2. Said tension spring is arranged to produce a drag on the brake drum 35 and tend to move the friction band 36 in a counterclockwise direction and initially apply said friction band. Counterclockwise movement of said friction band effected by the spring 16 rotates the

lever arms

66 and 69 about the axis of the rock shaft 65 and tightens said friction band on said brake drum by reason of the fact that the lever arm 69 is shorter than the lever arm 66 and pays out less than the lever arm 66 takes up.

The cam 50, as herein shown, is in the form of a segment of a circle, with two plane sides extending at substantially right angles with-respect to each other and connected together by a curved surface, to form a continuous regular depressed portion leading ,to a raised portion thereof formed by the periphery of the arc of the segment of the circle of said cam. When the roller 63 rides on the raised portion of said cam, the arm 66 is moved to a position to disengage the friction band 36 from its brake drum, and when said roller rides on the depressed portion of said cam, said friction band will be applied to said brake drum, by the spring 16 and the wrapping action of said band on said brake drum, to hold said brake drum from rotation in a counterclockwise direction up to.the limit of load of the spring 10.

The operating connection to the friction band 34, for applying or releasing said friction band from the casing 48, is similar to the connection for applying the friction band 36 to or releasing it from the brake drum 35 (see Figure 4) Said connection includes a rocking arm 89 mounted on the shaft 65 and having a roller 8| on the free end thereof, adapted to engage the cam 5|. Said rocking arm is provided with an upwardly extending connecting lug 82, to which is conazcaocs:

' tion has: onisaidg brake (mi ic hold said brake? nected a tension spring 82a,\.to initially engage the frictionband 34 with: the casing: "48, when.

said roller is riding on the depressed portion. of!

said-cam and toinsure release of the friction band 34 from the casing 48"when1s'aidi rollertis; riding on the raised portion of saidcam. The

connections from said rocking arm to opposite;

ends of. said friction: band", to apply said frictiom drum from 'rotation in alclockwise direction. -A

1 preloaded. compression spring 1111a is provided: to

permit said friction bandto release upon" a predetermined loadionrs'aidbrake drum (see Fig .6) f

, Aiyieldabl'e spring pressed plunger 85 isficonnected to the friction band-41' atthehinged poriband to or. releasev it from. the casing48; are.

otherwise the same as the connections to? the friction band 36, so needinot herein be described in detail. l v

The cam '5 I ,as' hereinishown, is in the form of a 'segment of a circle with one flat side so: arranged that rotation of said; cam in a counter clockwise direction from the position shown in Figure l will cause the rollerBl to ride alongzthe fiat side thereof, to permit said friction: bandito;

be engaged. with said casing by the wrappin ac--:

tion of said friction band; tohold said casing from rotation inva' counterclockwise direction up to the load limit ofrfa preloaded compression spring 81a, and rotation, of said cam in an oppo-k site direction fromthe position just described,

will cause said roller to ride'alon'g the periphery of the arc of the segment of. the circle of' said cam, to release said friction band from said.

casing.

The cam 52 is shaped similarly to the cam' 51;,

andis adapted to be engaged by a roller 83 onthe free end of a rocking arm 84, which rocking arm is freely mounted on the transverse shaft 65; Said rocking" arm, and roller are arranged to engage the underside of, saidzcam 52, as may clearly be seen with reference to Figures 3' and4.

The reason for this is; that the motor H is re-.

versed to drive the left hand winding drum; f5.- Accordingly, cable must be wound on the left hand winding drum [51in a-direction'opposite to which it is Wound on the right hand winding drum, in order that said drum may wind cable thereon when driven :by said moton; Thus the compressionspring and lever-mechanism for applying the frictionband 39 must be inverted from the position of the mechanism for applying or releasing the friction band 34. A pre-loaded 'tion thereof; Said spring pressed plunger is mounted in the support member'l'afl for slidable movement with respect thereto, and is adapted tov initially; apply the friction. band 4| to' the brake drum 4.0 to hold. said brake drum from ro'- tation. in an unwinding or clockwise direction:

I when the: roller B'kri'de's on the low part of the cam 53r-and to place a slightdra on said'brake' drum when said friction'ban'd has been released byrthe arm: 88-, toprevent free unwindin of the lefat'hand-druml5p 7 when in: a neutral position, the roller'sp63 and 81 will: be: on the reduced portions of, their" respec tive cams 53 and; 53 to: permit the friction (bands 36 and 4| to be appliedto ctheirtrespectivebrake drums; to hold'thejwindingl drums from .rotation in an unwinding direction; and the rollers;

"B l and 83 will be-0n= the raised-portions of their respective cams, 13011031156 the friction bands 34 t "and 39 to be released from their respective plan the: limit; of the etary casings. Whenin this position there will be; no drive throughcthe' planetaries and-both,

winding drums: will be I held: from rotation" up' to preloaded} springs 10' and 810,-,

respectively; I

' When the cam shaft 49 turnedflajpredeter mined amou'ntfrom a neutral position, the friction band 34' will be: engaged with the casin 48,

compression spring 83d has connectionwiththe upper end of said friction band, instead of the lower end thereof, as withthe friction bands 36;

and 34. With the exceptionof thisdifference inlocation of parts, the connection to said frictionband is the same andacts in the same. manner to" hold-said; casing: from rotation and to-form a drive connection to the righthand winding-drum torelease: the friction band 39; from the planetary 31,, andtheroller 8.?! will been; the high. portion ogflthe oam. 53, tocause the friction band 4i torbelreleasedtfrom the braked. rum 43; and. to

- permit} notation of; said drum ina counterclockas the connections tothe friction band 36, so will not herein be described. in'detail. Av lug 84a depends from the 'rockingarm 84' and has a tension spring 84b connected thereto, to hold the, "roller 8! in engagementwith the cam 5| and to initially apply said friction band to hold. the. casing for the-planetary 31 from rotation in a' clockwise direction.

The cam 53 for applying the friction b nd. Mv

to or releasing it from the brake drum 4!)" is of a roller 81 disposed beneaththe shaft 49' and mounted on the free end'of a rocking arm 88.

. the same form as the cam 50', but is engagedlby v v Said cam 53 is so-arran'gedon theshaftM that said friction band will be applied when the friction band 39 is released, and vice versa', except when all of the cams are in an off position,in which position all of the friction bands are in a released position; Said. roller and rockin arm' are adapted to release said; friction band 4:!" from the brake drum 4!] when riding on the high apart of; the cam 53,- or to permitv saidband to be ap v plied thereto byjthe wrapping action-of" said fric-,;

wise or. unwinding direction under a slight fric'- tional resistance-caused by the drag of said fric- Q tion band; onsaid, brake drum. imparted by the spring as; 1

, vWhe'n.,-the cam shaft is rotated 'a predeter; c

mined di'stance in anop posite' direction from that justi'described, which is r herein shown as. being appr'oximal'lely degrees, the roller 8|, willbe on the: raised 'POItiCIl of the cam. f 5! .to,' release.

the. friction band. 34 from 'the'casing 48, as shown in! Figure 4,, and'fthelro ller 83will be on'the reduced portion. of." the cam 52,.to. permit thefric on tion band. 39 to hold "the casing of .the planetary 31, from rotation This will drive the left hand druml5l, At the same time} the roller 81 willg beor the depressed portion of the cam 53,: to c ause'saidjbrake drum and the: associated I winding drum l 5 to. be positively held from rotation-iri-an unwinding; direjctiQmEbut to permit said-winding: drumrtoibe driven in a windin direction; The 1101181 63-willbe on the raised portionoffthecam 50;,110- cause th friction band 36" to be released from the brake drumc35,. and to:

permit said drum to rotate in a clockwise direction under sufiicient frictional resistance, to prevent the free unwinding of cable from the right hand winding drum I5. It is thus obvious that either drum may be separately driven in a winding direction, by simply reversing the direction of rotation of the motor I I.

The control for the cam shaft 49 and the

cams

50, 52 and 53 and the drive to said shaft is so arranged that rotation of said shaft will be stopped when said cams are positioned to cause driving of either one or the other of the winding drums I5, depending upon the direction of rotation of said shaft, and the sprocket 56 and driving member 51 will continue to rotate when rotation of said shaft is stopped. Continued rotation of said sprocket and drive member after rotation of said shaft has been stopped, also tends to hold the cams 50, 5|, 52 and 53 in the proper position for operating their respective friction bands. Said control and stopping means will be more fully explained as this specification proceeds.

The drive to said cam shaft is illustrated in particular in Figure 3 and includes an annular friction disk 9| mounted on a flange 92 of a driven member 93 of the clutch 58 and adapted to have engagement with the driving member 51. A compression spring 95 is provided to engage said friction disk with said driving member. Said spring is housed within and engages a seat formed in the inner end of an inwardly extending cylindrical portion 98 of said driven member. Said spring is held in compression by means of a retaining member 91, abutted by a pair of oppositely disposed

rollers

98, 98, mounted on an engaging member 99 by means of threaded pins I00, I08 (see Figures 3, '7 and 8). Said pins are threaded within said engaging member and extend therethrough and their inner ends have engagement with slots or keyways IOI, |8|, formed in the sleeve 80, to hold said engaging member from rotation. A nut I02 is provided to hold said engaging member in position on said sleeve.

The retaining member 91 has oppositely disposed machine screws |03, I03 threaded therein, the heads of which slidably engage keyways I04, I04 formed within the inner periphery of the cylindrical portion 96 of the driven member 93. Said retaining member has a pair of oppositely disposed recessed portions I05, I05 formed therein and herein shown as being of a substantially V-shaped formation, with a flattened. bottom.

Said recessed portions are adapted to be engaged by the

rollers

98, 98, and are so arranged that' they will receive said rollers whenever either of the cams 5| or 52 are positioned to permit either of the

friction bands

34 or 39 to be engaged with its respective planetary, to relieve the pressure with which the spring 95 engages the annular friction disk 9| with the driving member 51, and to permit slipping of said driving member with respect to said friction disk, but to exert a rotative force on said driven member and cam shaft. Said rotative force is only great enough to hold said cam shaft in position, thus relieving unnecessary drag on said clutch and the motor. Said shaft is driven from the driven member 93 by means of a member |06, secured to a reduced flattened outer end of said shaft by means of a nut I01. Said member has oppositely disposed machine screws I08, I08 threaded thereon, the heads of which are adapted to engage the keyways |04, I04. v

Referring now to the novel means for con-' trolling movement of the cams 50, 5|, 52 and 53, a hand lever I09 is keyed on the end of the shaft 49, opposite from the friction clutch 58 (see Figure 3). Said hand lever is provided with a hand grip I|0 having a spring pressed plunger II I mounted thereon. Said plunger is adapted to register for engagement with an aperture 3 formed in a stationary centering frame 90, or an aperture ||5 formed in an arm H6. When said plunger is engaged with the aperture 3, said cams are positively held from rotation and are so positioned that all of the

friction bands

36, 34, 39 and 4| will be released from their respective drums, and when said plunger is engaged with the aperture ||5. said cams may be rotatably moved to their several operative positions through the friction disk clutch 58. Said arm extends from a disk ||1, freely mounted on the shaft 49.

The disk 1 is provided with an inwardly extending jaw I20 adapted to engage either end of a jaw |2| formed on the outer end of a sleeve 22, mounted on the cam shaft 49, for free rotation with respect thereto (see Figures 3 and 9). When the jaw I20 is rotatably moving in one direction and engages one end of the jaw I2|, it will rotatably move said jaw until said jaw I20 engages a jaw I23 which will stop further rotation of said jaw I20. Said jaw I23 is herein shown as being formed integral with a sleeve I 24, mounted on said sleeve I22, for free rotation with respect thereto. When said jaw I20 is rotatably driven in an opposite direction, it will engage the opposite end of the jaw I23 and will rotatably move said jaw and the sleeve I24until it engages the opposite end of the jaw |2I, which will stop further rotation of said jaw I20.

' A flange I25 is herein shown as being formed integral with the end ofthe sleeve I22 opposite from the jaw I2|. A stop I30 projects outwardly from the periphery of said flange and is adapted to abut one side of a stop 89, projecting from the centering member towards the clutch 58. Said flange is abutted by the end of an annular portion I26 of a flange I240, formed integral with the inner end of the sleeve I24. A stop |3| projects outwardly from the outer periphery of the annular portion I28 and is adapted to abut the side of the stop 89 opposite from the side thereof which is abutted by the stop I30. The flange I25, annular portion I28, and flange |24a form an enclosure for a spiral spring I 21 connected between said flanges in such a manner as to cause rotation of either one or the other of said sleeves and their associated stops in a direction towards said stop 89 when one or the other of said stops has been moved away from said stop 89 and power has been relieved from the shaft 49. The purpose of this, spring is to return the cams 50, 5|, 52 and 53 to a neutral position, and to pivotally move the retaining member 91 a distance sufficient to cause the

rollers

98, 98 to ride out of the recessed portions I05, I05 onto the face of the retaining member 91 and compress the spring 95 to form a positive drive,

for the cam shaft 49, through the driving member 51 and friction disk 9|. Said spring I21 is secured at its inner end to a lug I 28, formed integral with the flange 25, and is connected at its outer end to a lug I29, formed integral with the flange |24a (see Figure 3).

When the hand lever I09 is locked in the off position shown in" Figure 3, or when said hand lever is locked to the arm I I6 by the plunger I I amma;

and power aimed off. of the, motor Il, t he stops I30 and 'I3I will be in engagement with opposite sideslof the stop 89. When vsaid hand lever is inthis last" named position, it may: r-

' tatably drive said arm and the disk I I1, upon pivotaltmovement of the cam shaft 49. 'Movement-of 'saidhand lever, however, from the .aperture '3 to the aperture II will 'rotatably move the camshaft 49, 180 degrees and positionethe earns 50, 5|, 52 and 53 in a neutral position, so

that bothfriction bands will be released 'from their respective planetaries and both' brake I bands will'engage their respective brake drums." Assuming'said hand lever is moved inalignment with the arm II6'and the plunger III is .in engagement with the aperture II5,:rotation 0f the shaft 49 in one direction will engage the jaw I with the jaw IZI', and. rotatably'mo-ve said jaw and the sleeve I22 until the jaw I20 engages the jaw I23 (see Figure'Ql, This will".

stop' movement of the cam shaft '49., 7 During such movement of the sleeve I22, the stop I I j V .applyethe friction bands i 36 randy :to, eachibrake willmove away from the stop 89.' Since thestop I3I is in'engagement with the stop 89, thismove ment of the stop I30 will wind the spring I21,

and the frictional resistance caused by slippage between the 'driving'memb'er 51 and friction disk 9 I will maintain said spring in a'wound' 'condi 'tiont Whenzthe arm Ilfihasvbeenfrotatedtoa position where the jaw I20 engages the jaw I23, the friction band 34 will be engaged with" the casing for the planetary 33, to=hold said casing from rotationand'to'form a drive connection to the right hand winding drum15' controlled by the 'frictionibandlfl'. The cam will beposi tioned to cause the friction band. 36 to' beapplied' :tolthe brake drum 135' to hold said righth'and I winding drum from rotation-in an unwinding direction, but'to permit said drum is rotate in "a'winding direction. The earns 52 and 53 will'be in position to'jrelease the: friction. band 39 from the -planetary' '3l and the friction band 4I';ffro 1'n the brake drum 140, to permit cable to payoff of the le'ftihand winding drum Iiiunder a slight frictional resistance, ashashereinbefore been described. The instant power is relieved froin said driving member, however, said spring drum, to positivelytholdfs'aid br 'k e'. dru

cause ithe frictionLband. 39 toiiengage its respecing may thus be positively driven by :the f motor: H in a winding directionwhich :is reverse 2t0s1the=dircti0n the, right hand winding drum is 'driven, and 1 the: Jrightihan'd winding J drum; may

z freelygirotate on its supporting shaft; A ti' the same time, the cam-'50 will berpositioned to disengage. the friction; band" i363 from the brake :drum :35, -and the scam :v53ewill be in "apositionto cause-the friction. band 4alicto'hold the left hand winding d-rum" :-from rotation in "sanunwinding directions Theinstant power is turned ,Iofi ofgthe -motor. -I I, the springal 211T, willsret'urn the stop 1-:I3I to aposition winlengagem'ent with: thejstop .895 This will imove theicams;li0,':15" "'52'and 53 to 121161 neutral position 'be'fore m tioned; and, will release power fromfboth winding drums and 1 from rotation. r j

' It. should hereibevnoted amen en winding drum 'I 5 V is "being driven and Jthead'ifrectioni'of :rotation of the motor 'I.Ifis reversed to 'drive the other winding" drum, jth'at' the sprocket 1:54? and shaft 149 i will i-bei-rotated a distance suflicient i to properly ,positionTthe cams 50 5| 52 and 53 -to drive either of, "said 'iwindin'ga mums;- before- "the j aws30 will engage thef'd'og 3I, rotatably drive ovel and simplified form of drive and controlling either drum may be: dr-iven;by;=merel$ reversing tend. to move the stop "I30 in ajdirection to emgage the stop 89 and return the cams 50, 5I',-52 and 53 tea-neutral position so both friction bands will be released from their respective planetaries land both-brake bands'willwbe applied to their respective friction drums, to hold the associated winding drums fromrotation in an unwinding direction.

where the jaw I20 engages the jaW=IZ3J 'andis stopped by said last mentioned jam-the retain-t ing member'91v will have been rotated by the drivenmember 93. distance 'suflicient to cause the

rollers

98, 98 to ride in the-recessed portions I'05,II05 of said retaining member 91.. This will relieve the force with which the spring 95 Jen-' gages the disk 9| with the driving member 9'1.

When the direction ofrotation of the motor H "55 When the jaw I2I has moved to a position is reversed, the spring IZI willvmove the; stop I30 until it engages the stop 89; The jaw I20 willnthen, engage the jaw I23 and rotatably'move the sleeve I24Vand stop I3I ina directioniaway from the vstop 89, and'wind up the spiral spring I21 until'the jaw I20 engages and is stoppedv by the jaw I2I This will *rotatably move the retaining member 91 a distance sufficient-to cause the

rollers

98, 98 to rideinto the recessed por I tions I05, I05 of'theretaining member 91*as' h'as payout cable at substantially thees flame rate cable i's wodnd 'in' by the'iethl drurn aj'revepsji 'ble motor, drive' connect ns' fromi said rnotor'to 75, each' of said windin parts" I may be altered-.-wit

-l'claim'asmyinvention r :1 1..Inwa= :drafti device s-of the class describ d-F draft .'='device.'iisI;particularly/adapted to conveyerhpifrithe type disclosed :in a companion application serial N oi 1 371,553,? filed December 24,1940; across a:coal face in1.opposit directions "to pick up Qmaterial' "therefrom; one; feed .=cab1e beingqattachedto each side'aofgthe loading dc:

vice, and, to hold Said "pickY-up memberlfrom' =lat-' eral xmovemen't when desired, .;as .in vcaseszwhere the device isworking across a, 'laterallypitchingseam and it is desired: to hold theipickeupine'mber imposition diiringithegathering operation. I While- I have herein' showrr and described one form in which my invention :may be embodied, y it will betunderstood rthatgtheconstruction =the'reor and the arrangement oif the'flvarious houtlde'parting from the spirit ,and scope thereof. '1 Furthermore "I not wish to be construedisas"limitingflmy in 'tion to the specific" embodiment"illustrated; ex

imited in the appended cepting as it-ma ":-.-be11 claims.

pair-of? winding drumsone' ofj which is adapted o "nec'zti'o'n'sfor said drive connections,"'an'd drive 'ib'ejforeabeen idescribed. It will also Ip'ivot" the cams s50, :.5.I-,' '52: and 753 "an amount suflicient to do, Y

"controlling; "con connections from said motor to said controlling connections operative to position said controlling connections to cause one of said first mentioned drive connections to drive one of said winding drums in a winding direction and permit the other to pay off cable, when said motor rotates in one direction, and to position said controlling connections to cause said other drive connection to drive the other of said winding drums in a winding direction and permit the first mentioned winding drum to pay off cable, when said motor rotates in an opposite direction.

2. In a draft device of' the class described, a pair of winding drums one of which is adapted to pay out cable at substantially the same rate cable is wound in by the other winding drum, a reversible motor, drive connections from said motor to each of said winding drums, means for holding said winding drums from rotation in an unwinding direction, and controlling connections for said drive connections and holding means, said controlling connections being driven by said motor and being operative to cause one of said drive connections to drive one of said drums in a winding direction and permit the other to pay off under the resistance of friction when said motor rotates in one direction and to cause the other drive connection to drive the other of said winding drums in a Winding direction and permit the first mentioned winding drum to pay off cable under the resistance of friction when said motor rotates in an opposite direction.

3. In a draft device of the class described, a pair of winding drums one of which is adapted to pay out cable at substantially the same rate cable is wound in by the other winding drum, a reversible motor, drive connections from said motor to each of said winding drums, means for holding said winding drums from rotation in an unwinding direction, and controlling connections for said drive connections and holding means, said controlling connections being driven by said motor and being operative to cause one of said drive connections to drive one of said drums in a winding direction and permit the other to pay oiT under the resistance of friction when said-motor rotates in one direction and to cause the other drive connection to drive the other of said winding drums in a winding direction and permit the first mentioned winding drum to pay off cable under the resistance of friction when said motor rotates in an opposite direction,and said holding means being automatically operable to hold both of said winding drums from rotation upon stopping of said motor.

4. In a draft device of the class described, a pair of winding drums, a reversible motor, drive connections from said motor to each of said winding drums, a friction band associated with each of said drums, for holding said winding drums from rotation in an unwinding direction, another friction band associated with each of said drums, for controlling said drive connections, and controlling connections for said friction bands, controlled by the direction of rotation of said motor and operative to cause one of said drive connections to drive one of said winding drums in a winding direction and permit the other to pay off cable when said motor rotates in one direction and to cause said other drive connection to drive the other of said drums in a winding direction and permit the first mentioned drum to pay off cable when said motor rotates in an opposite direction, and said controlling connections for said friction bands being automatically operable to hold both of said winding drums from rotation upon stopping of said motor.

5. In a draft device of the class described, a pair of winding drums, a reversible motor, drive connections from said motor to each of said winding drums, a friction band associated with each of said drums, for holding said winding drums from rotation in an unwinding direction, another friction band associated with each of said drums, for controlling said drive connections, and controlling connections. for said friction bands operative to cause one of said drive connections to drive one of said winding drums in a winding direction and permit the other to pay off cable when said motor rotates in one direction and to cause said other drive connection to drive the other of said drums in a winding direction and permit the first mentioned drum to pay 01f cable when said motor rotates in an opposite direction, and said controllingconnections for said friction bands being automatically operable to hold both of said winding drums from rotation upon stopping of said motor and including acam shaft driven by said motor and cams on said shaft arranged to control operation of said. friction bands.

6. In a draft device of the class described, a pair of winding drums, a reversible motor, drive connections from said motor to each of said winding drums, a friction band associated With each of said drums, for holding said winding drums from rotation in an unwinding direction, another friction band associated with each of said drums, for controlling said drive connections, and controlling connections for said friction bands operative to cause one of said drive connections to drive one of said winding drumsin a winding direction and permit the other to pay ofi' cable when said motor rotates in one direction and to cause said other drive connection to drive the other of said drums in a winding direction and permit the first mentioned drum to pay off cable when said motor rotates in an opposite direction, and said controlling connections for said friction bands being automatically operable to hold both ofsaid winding drums from rotation upon stopping of said motor and including a cam shaft driven by said motor and cams on said shaft arranged to control operation of said friction bands, and means for returning said cams and shaft to a position to cause said holding means to be applied to hold said drums from rotation, upon stopping of said motor.

'7. In a draft device of the class described, a pair of winding drums, a reversible motor, drive connections from said motor to each ofsaid winding drums, a friction band associated with each of said drums, for holding said winding drums from rotation in an unwinding direction, another friction band associated .with each of said drums, for controlling said drive connections, and controlling connections for said friction bands operative to cause one of said drive connections to drive one of said winding drums in a winding direction and permit the other to pay off cable when said motor rotates in one direction and to cause said other drive connection to drive the other of said drums in a winding direction and permit the first mentioned drumto pay off cable when said motor rotates in an opposite direction, and said controlling connections for said friction bands being automatically operable to hold both of said winding drums :cams onsaid Eshaft arranged to controlbperation of said friction bands, and means for ?re'- turning said cams and -shaftito aposition tonause said holding :means-to berapplied to hold said drums from rotation, upon :stopping of said motor, said means including a spring adapted to be wound by said motor,- to store ;up'l;energy therein, upon movement"of-saidcamsto agiposition .tocause either of said windingudrums' to :be driven by said motor, and adapted torotat-- :ably move saidacams in an opposite direction upon stopping :of .said motor.

8. Ina drafttdevice, a pair of winding-drums, a motor, and a drive connection fromsaid-motor operative to drive one of I said winding drums .in

a winding direction and .to permit the other'to pay off cable when said motor rotates. in one direction and to drive the -other of said; drums in a winding direction andpermit the first men.-

tioned drum to pay off cable when said motor rotates .in an opposite -:direction including a sepiior-uidrivingj-said drums, each of saidepicyclic sgear'ftrains"including .a reactionrmember rand friction :means for holding said reaction member from rotation,- brake meansfor each bf said -drums, and means driven by said motor for applying one M said friction means and releasing the other when saidlm'otor rotates in onedirecQ- tion and for applying-said other friction means and-releasing said firstmentioned friction means .by changing the direction of rotation :ofsaid motor, said means beingautomatically operable to .apply both of said brake means and release :bo'thof said friction means from'itheir respective reaction members as soon as rotation of said :mo-

tor is stopped. e

.11. In a draft :device, anreversiblemotor,.afpair I ofnwinding drums, either one of which may wind I inlcabletandseither -.of the other of which may arate epicyclic gear train-for each of said-windin-g drums; each of said gear trains includinga reaction member,-rneans tori-holdingsaidreac releasing said holding means from said first re action member and applying said holding means tosaid second reactionmembemwhen said motor is-rnr-i-ning in an opposite direction;

9. In a draft device, a pair of winding drums, a motor, and a drive connection from saidjmotor for drivin'g one-of said winding drumsin'awinding direction and permitting the other '-to ;-pay off-cable under frictional resistance, by causing said motor. to rotate in'one direction'fand for driving the other "of said drums in a winding di to "pay off cable under frictional resistance by reversing the direction of rotationiof said' motor including a separate epicyclicgear train fasso:

ciated with each of said windingf'drums, each of said motor rotates'in one'fdirection'and "for ap plying said other friction means to said other reaction member and releasing said first mentioned friction means from said first reaction member when the direction of rotation of I said motor is reversed. g 1

- -10. In a draft device, a pair of winding drums, one of which is adapted to wind inca'ble and the pay off icableattthe same rate cable .is wound in 'by the other drum; one of said drums being .adaptedqto be driven-lbysaid motor in a winding direction when said motor is rotating in one direction and the other of said drums being adaptedito be driven by said motor in" a windingdirectioni when said motoris rotating in an opposite j direction, anda drive connection from said motor to I said "winding "drums including a separate planetary-drive connection for each of saidvwind- 'ing, drums; each of said drive connections ineluding-a reaction member, a common member driveniby said motor; for driving said planetaries,

andflcontrolnmeans' driven by said motor and adapted to hold one of'said reaction members ,jfrom' rotation to cause' one of said-drums 'to be driven by-sa'id "motorini-a winding direction, when said rnotor is rotating' in onedirection and to hold said other: reaction member from rotation,

., toijcau'se theother of said drums to be driven by In said motor in a winding direction, when said mo- {rection and permitting the first-mentioned drum Y tor is rotating in an opposite direction. g I

1 a draft device, a reversible motor, a

pair of winding i-drurnshaving flexible cables wound thereon' and each'being adapted to wind 1 in' their respective cables-by rotation in a resaid'epicyclic gear trains'having'areactionmem verse direction, aseparate planetary geared reduction device having driving connection with each .of saidwinding drums, each of said planetaries' includingjareaction member and means for holding said reaction member from rotation, a drive connection from said motor to said planetaries including a drive shaft, and a drive connection from saidmotor for releasing said holdother of which is adapted to pay off cable atthe same rate cable is wound in by the other drum, a motor, and a drive connection from said motor fordriving one of said winding drums in a-winding direction and permitting the other drum to pay off cable by causing said motor to rotate in one direction and for driving the other of said drums in a winding direction "and *permitting the first mentioned drum to pay 'off cable lay-causing said motor to rotate'inaniopposite direction including a separate epicyclic .gear train associated with each or said winding drums,

'ing means from one reaction member upon r0- 13. 'In a draft device, "a reversible motor, a

pair of winding drums having flexible cables wound thereon. and each= being adapted to wind in their respective cables by rotation in a reverse direction, a separate planetary geared reduction device having driving connection with each of said winding drums, each of'said planetaries including a'reaction member and means for holding said reaction member from rotation, a drive connection from said motor to said planetaries including'ja drive shaft, and a drive connection from said motor for releasing said'holding means from on'ereaction member'upon'rotation of said motor, in one direction and forreleasing said holding meansfrom said other reaction member upon the reversal of rotation of said motor including a cam shaft rotatably driven by said motor, cams on said shaft having operative connection with said holding means for controlling operation thereof, and other means having connection with said cam shaft, for turning said cams to a position to release both of said holdin means when rotation of said motor is stopped.

14. In a draft device, a reversible motor, a pair of winding drums having flexible cables wound thereon and each being adapted to wind in their respectivecables by rotation in a reverse direction, a separate planetary geared reduction device having driving connection with each of said winding drums, each of said planetaries including a reaction member and means for holding said reaction member from rotation, a drive connection from said motor to said planetaries including a shaft, brake means for holding each of said winding drums from rotation, control means driven by said motor, for applying said holding means to one reaction member upon rotation of said motor in on direction and releasing said holding means from said other reaction member upon rotation of said motor in another direction, and other means for releasing both of said holding means and applying both of said braking means when rotation of said motor is stopped.

15. In a draft device, a reversible motor, a pair of winding drums having flexible cables wound thereon and each being adapted to Wind in their respective cables by rotation in a reverse direction, a separate planetary geared reduction device having driving connection with each of said winding drums, each of said planetaries including a reaction member and means for holding said reaction member from rotation, a drive connection from said motor to said planetaries including a shaft, brake means for holding each of said drums from rotation, control means driven by said motor, for causing said holding means for one planetary to be applied to one reaction member upon rotation of said motor in one direction and causing said holding means for said other planetary to be released from said other reaction member, upon rotation of said motor in another direction including a cam shaft rotatably driven by said motor, cams on said shaft for controlling operation of said holding and brake means, and means for stopping rotation of said cam shaft when said cams are positioned to cause either of said winding drums to be driven in a winding direction.

16. In a draft device, a reversible motor, a pair of winding drums having flexible cables wound thereon and each being adapted to Wind in their respective cables by rotation in a reverse direction, a separate planetary geared reduction device having driving connection with each of said winding drums, each of said planetaries including a reaction member and means for holding said reaction member from rotation, a drive connection from said motor to said planetaries including a shaft, brake means for holding each of said drums from rotation, control means driven by said motor, for causing said holding means for one planetary to be applied to one reaction member upon rotation of said motor in one direction and causing said holding means for said other planetary to be released from said other reaction member upon rotation of said motor in another direction including a cam shaft rotatably driven by said motor, cams on said shaft for controlling operation of said holding and brake means, means for stopping rotation of said cam shaft when said cams are positioned to cause either of said winding drums to be driven in a winding direction, and said drive connection from said motor to said cam shaft being adapted to permit continued rotation of said motor upon stopping rotation of said cam shaft and to hold said cams in position against said stopping means'due to continued rotation of said motor.

17. In a draft device, a reversible motor, a pair of winding drums having flexible cables wound thereon and each being adapted to wind in their respective cables by rotation in a reverse direction, a separate planetary geared reduction device phaving driving connection with each of said winding drums, each of said planetaries including a reaction member and means for holdin said reaction member from rotation, a drive connection from said motor to said planetaries including a shaft, brake means for holding each of said drums from rotation, control means driven by said motor, for causing said holding means for one planetary to be applied to one reaction member upon rotation of said motor in one direction and causing said holding means for said other planetary to be released from said other reaction member upon rotation of said motor in another direction including a cam shaft rotatably driven by said motor, cams on said shaft for controlling operation of said holding and brake means, means for stopping rotation of said cam shaft when said cams are positioned to cause either of said Winding drums to be driven in a winding direction, and said drive connection from said motor to said cam shaft being adapted to permit continued rotation of said motor upon stopping rotation of said cam shaft and to hold said cams in position against said stopping means due to continued rotation of said motor, and means for rotating said cam shaft, to a position to cause release of said holding means from said reacion members and the application of said brake means to hold said winding drums from rotation upon the stopping of rotation of said motor including a spring adapted to be Wound by said shaft when said shaft is rotatably driven by said motor in either direction, to position said cams in an operative position, to store up energy therein, and adapted to rotatably drive said shaft in a direction opposite to which it has been driven by saidv motor, upon stopping of said motor.

18. In a draft device, a reversible motor, a pair of winding drums having flexible cables wound thereon and each being adapted to wind in their respective cables by rotation in a reverse direction, a separate reduction device having driving connection with each of said winding drums, each of said reduction devices including a reaction member and means for holding said reaction member from rotation, a drive connection from said motor to said reduction devices including a common drive shaft, brake means for holding each of said drums from rotation, and control means driven by said motor for applying said holding means to one reaction member upon rotation of said motor in one direction and releasing said holding means from said other reaction member upon rotation of said motor in a reverse direction including a cam shaft having cams thereon, for controlling operation of said holding and brake means, and a fraction slip drive connection from said motor to said cam shaft, adapted to slip when said cams are positioned to cause either of said winding drums to be driven in a winding direction and to hold said cams in such a position by rotation of said motor,

19. In a draft device, a reversible motor,- a

verse direction, a separate reduction device having driving connection with each of said winding drums, each of said reduction devices including a reaction member and means for holding said reaction member from rotation, a drive connection from said motor to said reduction I devices, brake means for holdin each of said driven by said motor for applying said holding means to one reaction member upon rotation of winding drums from rotation, and control means said motor in one direction and releasing said holding means from said other reaction member upon rotation of said motor in another direction including aplurality of cams, for controlling operation of said holding and. brake means, and a friction slip drive connectionfrom said motor to said cams, adapted to slip when said cams are positioned to cause either of said winding drums to be driven in a winding direction and to hold said cams in such a position by rotation of said motor, said friction slip drive connection including a driving member, adriven member, yieldable means for holding said members in driving engagement with each other, and means for relieving the pressure with which said yieldable means engages said driven member with said driving member, upon a predetermined amount of rotation of said shaft.

20. In a draft device, a reversible motor, a pair of winding drums having flexible cables wound thereon and each being adapted to wind in their respective cables by rotation in a reforrelieving the pressure with which said yield,- able 'means engages said driven member with said driving member, upon a predetermined amount of rotation of said shaft, and other means for increasing the pressure with which said yieldable means engages said driving member with said driven member upon the stopping of rotation of said motor.

'21. In a draftdevioe, a reversible motor, a pair of winding drums having flexible cables woundf thereon and each being adapted to wind in their respective cables by rotation in a reverse direction, a separate reduction device having driving connection with each of said winding drums, each of said'reduction devices including a reaction member and means for holding said reaction member from rotation, a drive connection from said motor to said reduction devices,'brake means forholding each of said winding drums from rotation, and control means driven by said motor for applying said holding means to one reaction member uponrotation of said motor in one ,direction and releasingsaid holding means from said nection from said motor to said cams, adapted other reaction member upon rotation of said to slip when said cams areposi'tioned to cause either of said winding drums to be driven in a winding direction and to hold said cams in such a 'position by rotation of said motor, said friction slip drive connection including a driving member, a, driven member, yieldable means for holding said members in driving engagement with each other, and means for relieving the pressure with I which said yieldable means engages said driven said reaction member from rotation, a drive connection from said motor to said reduction devices, brake means for holding each of saidwinding drums from rotation, and control means driven by said motor forapplying said holding means to said cams, adapted to slip when said cams are positioned to cause either of saidwinding drums to be driven in a winding direction and to hold said cams in such a position by rotation of said motor, said friction slip drive connection including a driving member, a driven member, yieldable means for holding'said members in driving engagement with each other, and means,

member with said driving member, upon a predetermined amount of rotation of 'saidshaft, and other means for increasing the pressure [with which said yieldable means engages said driving member with said driven member upon the'stopping of rotation of said motor including a tension 'member .operatively connected with said shaft 1 and adapted to store up energy upon rotation of said shaft when driven by said motor in either direction of rotation thereof, and'to rotatably drive said shaft in an opposite direction upon stopping of said motor. 7

22. In .a draft deviceof the class described,apair said motor to drive one of saidwinding drums in,

awinding direction when said'rnotor rotates in onedirection and to cause said motor to drive said 7 other winding'drum in a winding direction when the d rection of rotation of said motor is reversed.

LOY D. HAqEnBooK.