US781775A - Hide-working machine. - Google Patents

Description

PATENTED PEB. 7, 1905.

A. A. HUTCHINSON.

HIDE WORKING MACHINE.

APPLIUATION FILED rms. a, 1904.

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ma lberb @Wma 1W fw No. 781,775. PATENTED FEB. 7, 1905. A. A. HUTGHINSON.

HIDE WORKING MACHINE.

APPLICATION FILED FEB. 8, 1904.

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PATEN'IED FEB. 7, 1905.

A. A. HUTGHINSON.

HIDE WORKING MACHINE.

APPLIOATIQN FILED FEB. e, 1904.

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A. A. HUTCHINSON.

HIDE WORKING MACHINE.

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Invenivr: ./lberbJdchwo APPLICATION FILED FEB. 8, 1904.

PATEN'IED FEB. 7, 1905.

A. A'. HU'ICHINSON.

. HIDE WORKING MACHINE.

APPLIOATIOEI FILED HB. 8, 1904.

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No. 781,775. PATENTED FEB. 7, 1905. A. A. HUTGHINSON. HIDE WORKING MACHINE.

APPLICATION FILED FEB. 8, 1904.

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ZAM ./fcdQ 4 lbcrl .Hutchzsom Patented February 7, 1905.

UNTTBD STATES PATENT @Trice HIDE-WORKING MACHINE.

SPECIFICATION forming part of Letters Patent No. 781,775, dated February 7', 1905,

Application tiled February 8, 1904. Serial No. 192,662.

To r// 117mm, it 'nt/ty con/cern,.-

Be it known thatl, ALnn'r A. H Uren rNsoN, a citizen of the United States of America, and

a resident of ll'inchester, in the county of vlidi dlesex and State ot' Massachusetts, have invented certain new and useful Improvements in lflide-lYorking Machines, of which the Vfollowing is a specification.

This invention relates to hide-working machines, and has for its object the production of a machine in which the supporting cylinder cooperates with a rubber-covered roll whereby the hide may be spread or worked out much more readily than in machines now in common use.

lt further provides 'for a hide-support consisting of a bed-roll and a hide-supporting roll mounted in pivoted frames which are adapted to be moved about their pivots to bring the bed-roll and working cylinder in corperating position.

Another object is to provide a simple mechanism for revolving the hide-supporting roll in opposite directions when the bed-roll is cooperating with the working cylinder and when it is not.

Furthermore, provision is made by this invention for a means Vfor moving the bed-roll support about its fulcrnm to bring the bedroll and working cylinder into contact without the use of springs or other devices liable to become inetiieient, and, linally, a device is provided which forms one ot' the principal features of the invention, whereby a radiusarm secured to the hide-support is made to cooperate with a lixed cam to force said hidesupport into position to cooperate with the working cylinders and hold the same in such position without strain upon the operator.

Vlt consists in certain novel features of construction and arrangementof parts, which will be r `adily understood by reference tothe description of the drawings and to the claims to be hereinafter given.

Of the drawings, Figure 1 represents a Yfront elevation of the left-hand side of a machine embodying this invention. Fig. 2 represents a left end elevation of the same. Fig. 3 represents a similar view with the driving-gear cul away, the cutting-plane being' on line 2% 3 on Fig. 1. Figa-1 represents a transverse vertical section of the same, the cutting-plane being on line 1 -1 on Fig. l. Fig. 5 represents a sectional plan of the driving mechanism. Fig. t3 represents a sectional elevation of the lixed eam, the end of the coaeting radius-arm, and the means for operating said radius-arm; and Fig. T represents a perspective view of a portion of the rocker-frame, secrmdary frame, and adjacent parts looking from the rear of the machine.

Similar characters designate like parts throughout the several ligures of the drawings.

To support the working parts of the machine, a main frame is preferably provided, made up of end frames 1t) 11) and tie-girths ll 11. ln the frames lo is mounted a shaft l2, and in the left-hand frame is mounted a short stud 13. The shaft l2 extends beyond the left-hand frame, and upon this and the stud 13 is secured a plate 11, which is provided with short studs l5 115 1T. On the studs 15 and lo' are mounted long-toothed gears 18 and 12), meshing' together. The gear le is driven by a spur-gear 2l), secured thereto and meshing with a pinion 2l on the stud 1T. This pinion 21 is driven by a driving-pulley 22, keyed thereon.

On the shaft 12 outside of the frames 1l) are pivoted rocker-hivers 2&3, having provided in the free ends thereof bearings 21 for trunnions .25 of the side or secondary Vframes 2o. rlhese side frames 2li are provided with bearings in which is mounted a hide-supporting roll L28, the left-hand trunnion Lt) of which has secured thereto a long-toothed gear 3l), adapted to mesh with the gears 18 1%) and which is driven therefrom. The drivingpulley 2") is driven continuously in the direction indicated by the arrows on Fig'. :2, and it is obvious that the gears 18 19 are thereby driven in opposite directions. lVhen the rocker-lever "23 is in the position shown in Fig. 2, in which position it is adapted to receive a hide, the gear 3o meshes with the gear 1S) and is driven thereby in a direction indicated by the arrows on Fig. 2 to revolve the hide-supporting roll in a direction to jfeed the hide into position to be operated upon by the working cylinder 31.

On the trunnions 29 of the hide-supporting roll are mounted arms 32, in the free ends of which is mounted a rubber-covered bed-roll 33. rlhis bed-roll 33 is mounted in suitable boxes 34 in the frame 32, and said boxes 34 are controlled by suitable tension devices 35, of ordinary construction, tending to keep said bed-roll in contact with the working cylinder 31 when said bed-roll and cylinder are cooperating. rl`he side frames 32 are adjustably connected at 36 to the secondary frames 26.

Above and to the rear of the hide-supporting rolls 28 are mounted in suitable boxes 37 38 the feed-rolls 39 40. The boxes 37 38 are provided with suitable spring-tension devices forcing said feed-rolls into position to cooperate with the hide-supporting roll 28. The working cylinder 31 is mounted on a shaft 41, upon which is a driving-pulley 42, by which said Working cylinder may be driven at any desired speed.

To the outer ends of the rocker levers or frames 23 are pivoted radius-arms 43, the opposite ends of which are forked, as at 44, and provided with a pin 45, on which is mounted rollers 46. The pin 45 extends through a slot 47 in an arm 48, keyed to a shaft 49,' upon which is secured a treadle 50, by which said arm 48 is operated.

To the side frames 10 are secured cam-plates 51, with which the rolls 46 cooperate.

The normal position of the rocker levers or frames 23 is as shown in Fig. 2, the treadle 50 being in its uppermost position, the rollers 46 being at their extreme rear position, the hide-supporting roll 28 being at its extreme forward position, and the hide-supporting-roll-operating gear 30 being in mesh with the gear 19 and revolving in the direction indicated by the arrows to feed the hide into position to be operated upon by the working cylinder 31. When a little more than one-haltl of the hide has been fed into position, so that the center of the hide is just below the working cylinder, the operator places his foot upon thetreadle 50, and theslotted portion oi' the arm 48 operates against the pin 45 and forces the lower end of the radius-arm 43 toward the front of the machine into the position shown in dotted lines in Fig. 4, causing the rocker-levers 23 to move about their pivots toward the working cylinder 31. During this operation the radius-arms 52, secured at 53 to the side frames 10 and the opposite ends or' which are pivoted at 54 to the arms 55, projecting downwardly from the side or secondary frames 26, change the inclination of said side frames, so that the hide-supporting roll 28 is brought into position to cooperate with the feed-rolls 39 40, and at the same time the bed-roll 33 is brought into position to cooperate with the working cylinder 31. At the same time as the rocker- 'frames 23 move about their pivots the gear' 3() leaves the gear 19 and meshes with the gear 18 and is moved thereby in the opposite direction to feed the hide upon the hide-supporting roll 28 outward or toward the operator, while the working cylinder 31 is revolving rapidly at a high rate of speed in the direction indicated by the arrow in Fig 4 to operate upon the hide. When the operator has depressed the treadle into the position shown in Fig. 4, the radius-arm 43 assumes a position substantially perpendicular with the roller 46, resting upon a Hat portion ofthe cam-plate 51, and thereby causes the rocker'- lever 23 to be held firmly in rigid position, with the rubber bed-roll 33 cooperating with the working cylinder, and is maintained in this position without strain upon the operator until pressure is removed from said treadle when the counterweight 56 will operate to move said rocker-levers 23 toward the operator, and thereby cause the rollers 46 to move toward the rear of the cam-plate 51, to permit the parts described to 'assume their normal position.

rl`he counterweight 56 is mounted on a lever 57, pivoted at 58, said lever being provided with a short arm 59, extending in opposite direction to the main lever 57, and is connected by a link 60 to the rocker-levers 23. The connector 60 is made adjustable to vary the relative positions of saidcounterweight and levers. The radius-arm 43 is also made adjustable to vary the relative positions of said rocker-levers 23 and the cam-plate 51. In the position shown in Fig. 2 the tendency of the weight 56 is to drop and cause the lever 23 to be moved into the position shown in Fig. 3. This movement of the lever 23 is, however, prevented by means of the radius-arm 43, which at that time has its roller 46 in a depression in the cam 51, the resistance being such as to overcome any tendency of the weight 56 to drop and move the lever 23 until the operator depresses the treadle 50 and moves the roller 46 out of the depression in the cam 51 and moves it into the position shown in Fig. 3, when the radius-arm 43 will will be in practically a vertical position and lock the lever 23, with its bed-roll 33, in position to cooperate with the hide-working cylinder 31. In reaching this position the weight 56 has been carried beyond a vertical line drawn through the pivot of its supportingarm and is held in that position as long as the operator retains his foot upon the treadle and keeps the roller 46 in the position shown in Fig. 3. As soon, however, as the operator removes his foot from the treadle the tendencj7 of the weight 56 would be to move into a position immediately below the pivot 13, and in so doing the upper end of the radiusarm 46 would be moved toward the front of the machine, bringing said radius-arm into an inclined position and allowing the roller IOO si@ to pass down the inclined cam 51 to regain its normal position, as indicated 1n Fig. l lt is obvious, therefore, that the weight when on l either side of the pivot of its supporting-arm tends to move the bed-roll into coacting position and out of c r acting position, as the case may be.

The boxes 3T 3S, in which the feed-rolls E19 o revolve, are mounted in frames 61, pivoted at 62 to the side frames l0, and are adapted to be, moved out of position to cooperate with the hide-supporting roll 2e and clamped in adjusted position by bolts G3.

When the hide is in soak and has hair on, it is a great ad Yantage to feed the hide without wrapping the same around the hide-supporting roll 28, and to accomplish this the feedroll i() is thrown out of contact therewith, and the feed-roll 3S) being' at right angles with a line drawn between the axis of said roll and said bed-roll feeds the hide without wrapping the saine around the roll, and therefore permits the hide to be spread much more readily than it otherwise would be, preventing any injury of the hide when it is fed between 'the bed-roll and working cylinder.

By means of this construction a machine for operating upon hides is provided of very simple construction and without springs, toggle mechanism, and expensive gearing, which is liable to get out of order and prevent a i proper operation upon the hides.

The cam-plate 51 is pivoted at one end at T0 to the side frame 1l) and is provided at its opposite end with a slot T1, through which said plate may be clamped in various positions i about said pivot Tt) by means of a clampingbolt TQ. This adjustment ofthe cam-plate l allows for a variation in the action of the rocker-frames and other parts in an obvious manner.

Having thus described my invention, I claim-- l. The combination with a working cylinder, of a feed-roll located above the upper snrface of said cylinder, a pivoted frame, a hidesu pporting roll and a Vfreely-reveluble bed-roll both having bearings in said frame at somedistance Vfrom the pivot thereof, a yielding surface interposed between said bed-roll and said working cylinder and moved by said bed-roll, and means for movingl said pivoted frame to cause said bed-roll to cooperate with said working cylinder and said hide-supporting roll to move i toward said feed-roll into position to cooperate therewith.

.. The combination with a working cylinder, of a feed-roll located above the upper surface of said cylinder, a pivoted frame, a hidesupporting roll and a freely-revoluble rubbercovered bed-roll both having bearings in said pivoted frame at some distance from the pivot thereof, and means for moving said pivoted frame to cause said bed-roll to cooperate with said working cylinder and said hide-supporting roll to move toward said feed-roll into position to cooperate therewith.

il. 'lhe combination with a working cylinder, of a feed-roll located above theuppersurface of said cylinder, apivoted rocker-frame, a secondary frame pivoted to said rocker-frame, a hide-supporting roll and a rubber-covered bed-roll mounted in said secondaryY frame, n ams for moving said frames about their pivots to cause said bed-roll to cooperate with said working cylinder and said hide-supporting roll to move toward said feed-roll to cooperate therewith, and means for limiting the movement of said secondary frame about its pivot.

4f. 'lhe combination with a working cylinder, of a pivoted frame, a hide-supporting roll and a rubber-covered bed-roll both having bearings in said pivoted frame at some distance from the pivot thereof, means for moving said bed-roll freely about its axis independently of the other rolls until in a position to cooperate with said working cylinder,

' and means for rotating said bed-roll when co- The stud 16 is made of sufficient length to i V perating with said working` cylinder so that their cooperating surfaces will be moved in opposite directions.

rlhe combination with a working cylinder, of a pivoted frame, a hide-supporting roll and a rubl)er-covered bed-roll both having bearings in said pivoted frame at some distance from the pivot thereof, means for moving said bed-roll freely about its axis independently of the other rolls until in position to cooperate with said working cylinder, means for rotating said bed-roll when coi'perating with said working cylinder so that their cooperating surfaces will be moved in opposite directions, and a yielding device for moving said pivoted frame about its pivot and said bed-roll into position to cooperate with said working cylinder.

6. llhe combination with a working cylinderof a frame .pivoted to the framework of the machine, a hide-supporting, roll and a rubbercovered bed-roll pivoted in bearings movable with the free end of the pivoted frame, means permitting said bed-roll to freely move about its axis, means for moving said pivoted frame into position 'for said bed-roll to cooperate with said working cylinder, means for rotating said bed-roll when cotiperating with said working cylinder so that their cooperating surfaces will be moved in opposite directions, and a yielding device operating upon said pivoted frame to insure contact between said support and said working cylinder.

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7. The combination with a working cylinder, of a pivoted rocker-frame, a secondary frame pivoted to said rocker-frame, a rubbercovered bed-roll mounted in the free end of said secondary frame, means for moving said rocker-frame about its pivot, and a radius-arm connecting said secondary frame to a stationary part.

8. The combination with a working cylinder, of a pivoted rocker-frame, a secondary frame pivoted to said rocker-frame, a rubbercovered bed-roll adjustably mounted in said secondary frame at some distance from its pivot, treadle mechanism for moving said rocker-frame about its pivot, and a radiusarm connecting said secondary frame to a stationary part.

9. The combination with a working cylinder, of a pivoted rocker-frame, a secondary frame pivoted to said rocker-frame, arms adjustably secured to said secondary frame, a rubber-covered bed-roll mounted in the free end of said arms, and means for moving' said rocker-frame about its pivot.

l0. rlhe combination with a working cylinder, of a pivoted rocker-frame, a secondary frame pivoted to said rocker-frame, the pivots of said frames being parallel, a rubbercovered bed-roll adjustably mounted in said secondary frame at some distance from its pivot, and mechanism for moving said rockerframe about its pivot.

11. The combination with a working cylinder, of a hide-supporting roll, means for moving said roll in a direction to feed the hide toward the working cylinder when the former is not in operative position, a rubber-covered bed-roll, means for moving said bed-roll to bring it into contact with said knife-cylinder, and means for moving said hide-supporting roll so as to feed the hide away from the working cylinder when the latter is coperating with said bed-roll.

12. The combination with a working cylinder, of a rubber-covered bed-roll, a hide-supporting roll, means for moving the hide-supporting roll in a direction to feed the hide toward the knife-cylinder when the latter is not .in operative position, means for moving the same in the opposite direction when the working cylinder is cooperating with said bed-roll, and means for bringing said bed-.roll and working cylinder into cooperating position.

13. The combination with a working cylinder, of a rubber-covered bed-roll, a hide-supporting roll, means for rotating said roll in one direction during the operation of the working cylinder, and means for moving the same in the opposite direction when the working cylinder is not in operation.

14. The combination with a working cylinder, of a pivoted rocker-frame, a secondary frame pivoted to said rocker-frame, a hidesupporting roll and a rubber-covered bed-roll mounted in said secondary frame, and means for moving said frame about its pivot to cause said bed-roll to coperate with said working cylinder.

15. The combination with a working cylinder, of a pivoted rocker-frame, a secondary frame pivoted to said rocker-frame, a hidesupporting roll and a rubber-covered bed-roll mounted in said secondary frame, means` for moving said frame about its pivot to cause said bed-roll to cooperate with said working cylinder, and a yielding device secured to said rocker-frame serving to move said rockerframe about its pivot to insure contact between said bed-roll and said working cylinder.

16. The combination with a Working cylinder, of a pivoted rocker-frame, a secondary frame pivoted to said rocker-frame, a hidesupporting roll and a rubber-covered bed-roll mounted in said secondary frame, means for moving said frame about its pivot to cause said bed-roll to cooperate with said working cylinder, a yielding device secured to said rocker-frame serving to move said rockerframe about its pivot to insure contact between said bed-roll and said working cylinder, and

adjustable means for limiting the movement of said pivoted frames.

17. The combination with a working cylinder, of a pivoted rocker-frame, a secondary frame pivoted thereto, a hide-supporting roll and a ru Liber-'covered bed-roll mounted in said secondary frame, means for moving said rocker-frame about its pivot, and a radius-arm connecting said secondary frame to a stationary part.

18. The combination with a working cylinder, of a pivoted rocker-frame, a secondary frame pivoted thereto, a hide-supporting roll and a rubber-covered bed-roll mounted in said secondary frame,a treadle mechanism for moving said rocker-frame about its pivot, and a radius-arm connecting said secondary frame to a stationary part.

19. The combination with a working cylinder, of a rubber-covered bed-roll, a hide-supporting roll, means for moving said bed-roll into position to coperate with said working cylinder, a feed-roll, a gear secured to and revolving with said hide-supporting roll, two gears revolving in opposite directions, and means for moving saidl hide-supporting-roll gear from a position meshing with one of said gears to a position meshing with the other.

20. The combination with a working cylinder, of a pivoted frame, asecondary frame pivoted thereto, a hide-supporting roll and a rubber-covered bed-roll mounted in said secondary frame, means for moving said bed-roll into position to coperate with said working cylinder, a pivoted lever, a connector between said lever and said pivoted frame, and a weight secured to the oppositeY end of said lever.

2l. The combination with a working cylinder, cfa pivoted frame, a hide-support pivoted to the free end of said frame, the pivots IIC otl said trame and hide-support being' parallel, means lor moving said support into position to cooperate with said working cylinder, a pivoted lever, a weight upon one ai'in ot' said lever, and a connector between the otliei' arm ot' said lever and said pivoted trame adapted to assist in the movement ot' said hide-support towai'd the working cylinder and to start the hide-support in the oposite dii'ection when pressure is removed Vt'rom the treadle.

2Q. The combination with a woi'king cylindei', ot' a pivoted rocker-frame, a secondary trame mounted in said rocker-trame, the pivots ot' said Yframes being' pai'allel, a hide-suppoi't mounted in said secondary frame, means Yfor moving' said trames about their pivots to cause said hide-support to cooperate with said woi'king cylinder, a pivoted levei', a weig'lit upon one ai'iii ot' said lever, and a connector between the othei' arm ot' said lever and said pivoted rocker-trame adapted to assist in the movement ot' said liide-suppoi't towai'd the working' cylindei' and to stai't the hide-support in the opposite dii'ection when pressure is removed Ytrom the treadle.

Q3. The combination with a working cylinder, ot a pivoted rocker-trame, a secondary Vframe mounted in said rocker-frame, a hidesupporting' i'oll and a rubber-coverml bed-roll mounted in said seconiilary trame, means `t'or moving said trames about their pivots to cause said hide-supporting' i'oll to cooperate with said working cylinder, a pivoted lever, a weight upon said lever, and a connector between said lever and said pivoted i'oekei'- frame.

2l. lhe combination with a working cylinder, ot' a pivoted rocker-frame, a secondary Vtrame pivoted to said rocker-frame, a hidesupporting roll and a rubber-covered bed-i'oll having' bearings in said secondary frame, means for moving'said frames about their pivots to cause said hide-supportingi'oll to coopei'ate with said working cyliniiler, and means Vt'or limiting' the movement otl said secondary Yt'rame about its pivot.

The combination with a working cylindei', ot' a pivoted rocker-frame, a secondary y Vtrame pivoted to said rocker-trame, a riibbei'- covei'ed bed-i'oll mounted in said secondary frame, and an arm one endet' which is secured to said secondary traine and the otliei' end ot which is secui'ed to a stationary part and adapted to regulate the movementot' saidsecondary l vframe.

26. The combination with a working' cylinder, ot' a pivoted rocker-frame, a secondary frame pivoted thereto, a hide-supporting' i'oll and a rubber-covered bed-roll mounted in said secondary t'rame` treadle mechanism for movf ing' said rocker-frame about its pivot, an ai'ni one end ot' which is secured to said secondary trame and the other end ot' which is secured i upon said levei', and a connector between said lever and said rocker-tranie.

2T. 'llhe combination with a working' cylindei', otI a pivoted rocker-trame, a secondary t'ranie pivoted to said rocker-traine, aVhidesupporting' i'oll anda i'ubber-covered bed-roll mounted in said secondary trame, means t'or rotating' said liide-siippoi'ting' i'oll in two directions, and means lor moving said rockerl'rame toward said woi'kiiig' cylinder and at the same time change the inclination ot said secondary t'rame to said rocker-frame.

'lhe combination with a woi'kiiig' cylinder, ot' a pivoted hide-support, means tor moving' said hide-support intoposition to coperate with said working' cylindei', a pivoted lever, a weight adjustable on said lever, and a connector between said lever and said hidesupport and articulated to each.

20. The combination with a working' cylinder, ot` apivoted hide-support, means lor moving said hide-support into position to cooperate with said working' cylinder, a pivoted levei', a weight adjustable on said lever, andan adjustable connector between said lever and said hide-support and articulated to each.

$31). 'lhe combination with a woi'king' cyliiider, ot' a pivoted hide-supp rt, means t'or movingA said hide-snppi'irt into position to coperate with said working' cylinder, a two-armed lever, a weight upon one ot' said arms, and a connector between the other arm and said hidesupport and articulated to each.

3 'lhe combination with a working' cylinder, of a pivoted hide-support, an adjustable radius-arm secured to said liide-suppoi't, a

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i'ollei' in the end ol said riulius-arni, a pin there tor, a cam to coi'perate with said i'adiiisarm, a rocker-shaft, a n ai'ni on said rockershat't, and a slot in said ai'iii engaging' with said i'oller-piii.

3L. The combination with a working' cylinder, ot' a pivoted liide-siippoi't, a lixed cam, a connector between said liide-suppoi't and said cam, means t'or moving' said coiiiiecto along' said cam to move said liide-suppoi't into position to ciiaperate with said working cylinder, a two-armed pivoted lever, a couiitei'\\'eig'lit upon one ai'iii ot' said lever, and a connector between the other ai'iii and said hide-support.

32B. 'llie combination with a working' cyliiider, ot a pivoted rocker-trame, a hide-supporting' roll mounted in the tree endot'said rockert'rame, a driving-shaft` a gear driven by said driving-shaft, a second g'eai' driven by said driving-gear, a gear upon the shat't ot' said hide-supporting` i'oll, and means tor moving' said lattei' gear t'roni mesh with one ot' the before-mentioned gears into mesh with the other otl said gears.

3st. The combination with a workingcylinder, ot a pivoted rocker-traine, a secoi'idary trame pivoted to the tree end otI said i'ockei'- to a stationary part, a pivoted lever, a weight l trame. the pivots ot' said trames being' pai'al- IIO lel, arubber-covered bed-roll mounted in bearings in said secondary frame, a pivoted lever, a Weight adjustable on said lever, and a connector between said lever and said pivoted rocker-frame.

35. The combination with a working cylinder, of a pivoted rocker-frame, a secondary frame pivoted to the free end of said rockerframe, the pivots ot' said frames being' parallel, a rubber-covered bed-roll mounted in bearings in said secondary frame, a pivoted lever,

a weight adjustable on said lever, and an adjustable connector between said lever and said pivoted rocker-frame.

36. The combination with a working cylinder, of a pivoted rocker-frame, a secondary frame pivoted to the free end of said rockerframe, the pivots of said frames being' parallel, a rubber-covered bed-roll mounted in bearings in said secondary frame, a two-armed lever, a weight upon one of said arms, and a connector between the other arm and said rockerframe.

37. rl`he combination with a working c vlinder, of a pivoted rocker-frame, a secondary frame pivoted to the free end of said rockerf rame, a rubber-covered bed-roll mounted in bearings in said secondary frame, a radiusarm secured to said secondary frame, a cam to cooperate with said radius-arm, and means for moving said radius-arm along said cam to move said bed-roll into position to cooperate with said working cylinder.

38. The combination with a working cylinder, of a pivoted rocker-frame, a secondary lframe pivoted to the free end of said rocker- Jframe, a rubber-covered bed-roll mounted in bearings in said secondaryv frame, a rad ius-arm secured to said secondary frame, a roller in the end or' said radius-arm, a cam to cooperate with said radius-arm, and means for moving said radius-arm along said cam to move said bed-roll into position to cooperate with said Working cylinder.

89. The combination with a working cylinder, of a pivoted rocker-frame, a secondary frame pivoted to the free end ot' said rockerframe, a rubber-covered bed-roll mounted in bearings in said secondary frame, an adjustable radius-arm secured to said secondary frame, a roller in the end of said radius-arm, a cam to cooperate with said radius-arm, and means for moving said radius-arm along said cam to move said bed-roll into position to cooperate with said working cylinder.

40. The combination with a working cylinder, of a pivoted rocker-frame, a secondary frame pivoted to the free end of said rockerframe, a rubber-covered bed-roll mounted inY bearings in said secondary frame, an adjustable radius-arm secured to said secondary frame, a roller in the end of said radius-arm,

a cam to cooperate with said radius-arm, a rocker-shaft, a treadle on said rocker-shaft, and an arm secured to said rocker-shaft and operating upon said radius-arm to move it along said cam.

41. The combination with a Workingcylinder, of a pivoted rocker-frame, a secondary frame pivoted to the free end of said rockerframe, a rubber-covered bed-roll mounted in bearings in said secondary frame, an adjustable radius -arm secured to said secondary frame, a roller in the end of said radius-arm, a pin therefor, a cam to cooperate with said radius-arm, a rocker-shaft, an arm on said rocker-shaft, and a slot in said arm engaging with said roller-pin.

42. The combination with aworking cylinder, of a pivoted rocker-frame, a secondary frame pivoted to the free end of said rockerframc, a rubber-covered bed-roll mounted in bearings in said secondary frame, a xeol cam, a connector between said rocher-frame and said cam, means for moving' said connector along said cam to move said bedroll into position to cooperate with said working cylinder, and a counterweight secured to said rocker-frame assisting in its movement toward said working cylinder.

43. The combination with a working cylinder, of a pivoted rocker-frame, a secondary frame pivoted to the free end of said rockerframe, a rubber-covered bed-roll mounted in bearings in said secondary frame, a fixed cam, a connector between said rocker-frame and said cam, means for moving said connector along said cam to move said bed-roll into position to cooperate with said working cylinder, a two-armed pivoted lever, a counterweight upon one arm of said lever, and a connector between the other arm and said rockerframe.

44. The combination with a working cylinder, oi' a pivoted hide-support, a radius-arm secured to said hide-support, a roller in the end of said radius-arm, a cam to cooperate with said radius-arm, and means for varying the relative position of said cam to said radius-arm.

45. The combination with a working cylinder, of a pivoted hide-support, a radius-arm secured to said hide-support, a roller in the end of said radius-arm, a pivoted cam to cooperate with said radius-arm, and means for varying the position of said cam about said pivot.

Signed by me at Boston, Massachusetts, this 9th day of January, 1904.

ALBERT A. HUTCHINSON.

/Vitnesses:

WALTER E. LOMBARD, EDNA C. CLEVELAND.

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