US1754281A - Machine for working leather and other sheet material - Google Patents

Description

April 1930. r J. w. ODONNELL 1,754,281

MACHINE FOR WORKING LEATHER AND OTHER SHEET MATERIAL Original Filed April 10, 1924 6 Sheets-Sheet l April 15, 1930. .3. w. ODONNELL MACHINE FOR WORKING LEATHER AND OTHER SHEET MATERIAL Original Filed April 10,

1924 6 Sheets-Sheet Fig. 3

April 15, 1930. J. w. ODONNELL 1 1,754,231

MACHINE FOR WORKING LEATHER AND OTHER SHEET MATERIAL Original Filed April 10, 1924 6 shets-sneet 3 April 15, 1930. ,1. w. O'DONNELL 1,754,281

MACHINE FOR WORKING LEATHER AND' OTHER SHEET MATERIAL Original Filed April 10, 1924 6 Sheets-Sheet 4 Fig T ale.

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MACHINE FOR WORKING LEATHER AND OTHER SHEET MATERIAL Original Filed April 10, v1924 6 Sheets-Sheet 5 Fig.9

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MACHINE FOR WORKING LEATHER AND OTHER SHEET MATERIAL Original Filed April 10, 1924 6 Sheets-Sheet 6 dvm evu @Q mmm Patented Apr. 15, 1939 umreo srars PATENT OFFIE JOHN W. ODONNELL, OF SALEM, MASSACHUSETTS, ASSIGNOR TO THE TURNER TAN-- NING MACHINERY COMPANY, OF PEABODY, MASSACHUSETTS, A CORPORATIOIWOF MAINE MACHINE FOR WORKING LEATHER AND OTHER SHEET MATERIAL Application filed. April 10, 1924, Serial Nb. 705,?16. Renewed lanuary 3, 1929.

'l. his invention relates to machines for treating sheet material. The illustrated embodiincnt of the invention is especially designed for performing operations such as setting operations onhea-vy leather and particularly for setting and rolling leather known a the trade as backs, butts, bends, sides and shoulder pieces. It will be understood, however, that various important features of the invention may have other applications and uses as in unhairing, finehairing, scudding, fleshing, and putting out opera tions, as well as in different treatments of other sheet material.

Itis an object of thisinvention to provide an improved machine which may be so controlled that a given piece of work or any portionthereof may readily be repeatedly operated upon once it has been introduced into the machine. thereby obviating the neces-. sity of repeated handling of the work and enabling the operator to treat a given piece of work in accordance with the characteristics of the work and the results that it is desired to attain. It is a further object of the invention to provide a plurality of operating parts for simultaneous operation on the Work so arranged as to be particularly eli'ective in operation While at the same time assisting in the feeding of the work in opposite directions during repetition of the treating operations upon the whole or upon any given portion of the work;

lVith these cndsin View, and in accordance with important features ofthe invention, the illustrated machine comprises a pair of work operating cylinders spaced with respect to each other and arranged to co-operate simultaneously with a bed roll which serves also as a feeding means in co-operation with a feed roll, the cylinders being driven in oppositedirections and preferably at a higher rate of speed thanthe work feeding means. In order that the whole piece of work or any portion thereof may be operated upon as often as the conditions may require, means is provided under the control of the operator for reversing the direction of rotation of the feed rolls at any time while the cylinders continue to rotate in the same directions as before. By this arrangement one of the cylinders aids the feed rolls in feeding the work in misdirection and the other cylinder operates as a feeding means while the work is being fed in the reverse direction. With the cylinders turning in opposite directions and. at a higher speed than the feed rolls, both cylinders are particularly effective in their operations on the work and both cylinders operate during the direct feed of the work and also during the reverse feed while at the ime time serving alternately to assist in the feeding operations. Since the illustrated machine is particularly adapted for setting the grain of heavy leather it is desirable to provide also for heavy rolling of the leather simultaneously with the setting operations. This is effected in the illustrated machine, wherein the bed roll is movable from work receiving to work clamping position, by providing the bed roll with an unyielding support in the plane defined by the parallel axes ofthe feed roll and bed roll. Hence, the work may be clamped firmly between the bed roll and-feed roll through the operation of heavy springs which press upon the feed roll causing the latter to clamp the leather upon the unyielding bed roll and to exercise heavy rolling pressure during the feeding operations.

In the construction shown the feed roll may beadjusted so as to approach more or less closely to the bed roll without touching the same, whereby danger of damage to the bed roll by the feed roll is obviated. Preferably and as shown adjustment of the spring means hacking the feed roll is provided for to predetermine the pressure of the rolling operations while permitting adjustment of the feeding means to the inequalities of the work. Conveniently the working cylinders are so mounted that the degree of pressure exerted by the cylinders upon the work during operations thereon may be predetermined by adjustment to obtain the desired results in accordance with the judgment of the operator. In the illustrated machine, the bed roll and one of the cylinders are so mounted as to swing away from each other-into a wide open work receiving position, power means being provided for returning the movable cylinder and the bed roll to operative position in which the work is clamped firmly between the bed roll and the feed roll preliminarily to the rolling and setting operations on the work.

The setting and rolling operations on a given piece of work to secure uniformity of results are facilitated by the control which the operator possesses with respect to the machine, enabling him to treat any given part of the work repeatedly and then to pass the entire piece of work continuously past the cylinders thereby insuring that no lines of demarcation will appear on the finished work and that the grain side will be left with aclear even color.

It will be understood that "arious important features of the invention are not re stricted in their applications to: machines of the double-cylinder type but that they may have other applications and uses as, for instance, in single cylinder machines employed in treating hides and skins.

These and other features of the invention and novel combinations of parts will be described in the specification and pointed out in the appended claims.

In the drawings,

Fig. 1 is a front elevation of the machine illustrating one embodiment of the invention, the machine being in open, work receiving position;

1g. 2 is a detail. view of the gear drlvmg mechanism;

Fig. 3 isv a vertical transverse section of the machine disclosing the partsfor supporting and operating upon the work, the parts being in work receiving position;

Fig. 4 is a view similar to Fig. 3 showing the parts in position to operate upon the work;

5 is an end view of the machine lookingffrom the left in Fig. 1

ig. 6 is a detail illustrating the yielding mountings for the feed roll and for one of the cylinders;

Fig. 7 is a detail in plan. view from above illustrating the connections from the treadle to the parts which control the opening of the machine into work receiving position and the closing into work operating position;

Fi 8 is an end vi'ew,'partly in section, showing the parts in Fig. 7 from another viewpoint;

Fig. 9 is a plan view from above of the connections between the manually controllable lever and the parts which may be operated to reverse the direction of feed of the work at the will of the operator;

Fi 10 is an end view partly in section showing the mechanism of Fig. 9. looking from the right in Fig. 1; and

Fig.11 is; a top plan view of the machine shown in Fig. 1-.

In the illustrated machine the means for feeding the work comprises a bed roll 20 mounted in bearings at the upper ends of two swing arms 22 each mounted fixedly at its lower end upon a shaft 24, the arrangement being such that the swing arms are secured lation of heavy screw threaded bolts 34 (Fig. 1a

It will be understood that the bolts 34. in connection with the bearing blocks 30 permit adjustment of the feed roll 28' toward and from the bed roll 20 and that they serve an additional purpose in limiting the movement of the feed roll toward the bed roll so that the former cannot contact with the latter to cause damage thereto. In order that the feed roll may clamp the work upon the bed roll with a yielding pressure there is provided a heavy spring 36 in connection with each hearing block 30 interposed between the upper surface of the block and an adjustable member (Figs. 4 and 6) at the upper end of the guideway 32. Upon rotation of a screw threaded member 40 the member 38 is caused to rise or to descend to adjust to a predetermined extent the pressure of the spring 36 with respect to the feed roll 28 and the work to be operated upon, in accordance with the judgment of the operator. It will be observed that the bed roll 20 when in operative position beneath the feed roll 28 has its axis positioned in the plane defined by the axes of the roll 28 and the shaft 24 and hence that the bed roll 20 is so supported as to serve as an unyielding support for the work. Hence, a suitably heavy rolling operation on the work may be obtained by proper adjustment of the feed roll 28. At the same time the feed roll will yield and thus adjust itself to inequalities in the work.

The means for performing other operations on the work in the illustrated machine comprises a pair of cylinders 42, 44 provided with spirally arranged blades 46 extending in opposite directions from the longitudinal center of the cylinder, as most clearly shown in Fig. 11 of the drawings. Preferably, both cylinders 42 and- 44 are each provided with blades or vanes of different spirals so that if theblades 43 of one spiral do not lay'the grain of the work in a proper manner the other blades 45 of a different spiral will do so. d'er 42 is mounted in the frame of the machine by means of bearing blocks at each end of the cylinder one of which is shown at 48 (Fig. 6), the blocks being adjustable each in a guideway 50 in the frame of the ma- In the construction shown the rear cylinchine. For adjusting each block to secure the desired relation to the bed roll there is provided a heavy threaded bolt 52 for engagement with the lower end of the block 48, said bolt being adjustable in the frame in a 'Well-knownmanner, as indicated in Fig. 6

of the drawings. As shown, a heavy spring 54 is utilized for pressing the bearing block 48 in a direction to hold the cylinder 42 yieldingly against the work interposed between it and the bed roll 20, the arrangement of the spring 54 and the adjusting means therefor being similar to that of spring 36 already described in connection with the feed roll hearing blocks 30. By means which will be hereinafter described, the bed roll 20 is brought into a definite position with relation to the feed roll 28 and the rear cylinder 42 and held in that position during the operation of the machine. Hence, the force with which the bladed cylinder 4.2 presses upon the work is predetermined by adjustment of the screw threaded bolt 52 and the tension of the spring 54. Al er the bed roll 20 is moved into work operating position, as shown in Fig. 4,.the front cylinder 44 is brought into its final co-operative relation with respect to the bed roll. After the work has been operated upon to the desired degree the bed roll and the front cylinder 44 are caused to move to their initial positions illus trated in Fig. 3 of the drawings. It is in this position of the parts that the work is intro duced by throwing it over the bed roll 20. In order that the cylinder 44 may move toward and from the bed roll in the manner already described, it is mounted at its ends in two oscillatable arms each pivoted loosely on a shaft 62 on the frame of the machine. At its free end each arm 60 is connected by a link 64 pivoted to the arm and l'iaving a screw threaded port-ion 66 arranged to pass loosely through a block 68 pivoted between a pair of hell cranks 70, 72 (Fig. 1), fixedly secured at their lower ends to a stub shaft 74 mounted for rotation in bearings secured to the base portion 7 6 of the frame of the machine. On the end of the screw threaded member 66 which projects beyond the block 68 is a spring 7 8 (Fig. 4) located between a collar 80 adapted to be adjusted to tension the spring 7 8 and to afiord a backing for thespring so that the latter presses against a second. collar 82 which is in contact with block 68, the arrangement being such that the member made up of link 64 and the screw threaded rod 66 may move relatively to the block 68, thus permitting the swing arms 60 to approach or recede from the bed roll 20 in accordance with inequalities in the thickness in the work interposed between the cylinder 44 and the bedroll 20. In other words, the springs 7 8 permit the bladed cylinder 44 to adjust itself to variations in the thickness of thework, the bladed cylinder being mounted unyieldingly in the swing arms 60.

The illustrated means for moving the bed roll 20 and the movable cylinder 44 to operative position and also in the reverse direction to work receiving position is best shown in Figs. 1, 3 and 4. The said means comprises a shaft 86 extending along the rear of the machine in parallel relation to the feed rolls and the cylinders. the shaft having its ends mounted in upright portions of the frame of the machine. Mounted upon the shaft 86 at each end thereof is an eccentric 88 surrounding which is an eccentric strap 90 having fixedly connected thereto a projection 92 to which is adjustably connected a turn buckle 94 having threaded connections with a link 66 pivoted at its other end, as at 98, (Fig. 3) near the upper end of one of the arms 22. It will be readily understood that upon rotation of the shaft 86 through 180 the bed roll 20 will be moved from work receiving position to work clamping relation to the feed roll 28 or in a reverse direction. Mounted upon each end of the same shaft 86 is a second eccentric 100 having an eccentric strap 10?. surrounding it to connect the eccentric through a link 104 to the bell cranks 70, 7:2,.

the link 104 being extensible and having its end pivoted to a block 106 adjustably mounted in a guide member 108 rigid with the unper end of the bell crank 72. It will be ol served that the eccentrics 88, 100 are so mounted upon the shaft 86 that they counterbalance each other so that there is no strain on the shaft and so that, during the rotation of the shaft in a counter-clockwise direction in Figs. 3 and 4, the movable cylinder 44 is raised in a direction away from the bed roll 20 upwardly out of the path of the bed roll so that the latter may be swung tothe position shown in Fig. 8 where it is accessible for receiving the work. It will be observed further that as the front cylinder moves upwardly the bed roll moves downwardly so that they counterbalance each other thereby lessening the strain and jar on the machine. The nexthalf rotation of the shaft 86 in the same direction serves to bring the bed roll 20 into operative relation to the feed roll 28, as shown in 4, the bed roll being closely followed into operative position by the movable cylinder 44. Through the adjustable link 104 and the adjustable block 106 the throw of the bladed cylinder 44 may be accurately determined. And, as a further means of adjustment, the connection between the link 64 and the bell cranks 70, 72 is also adjustable through a turn buckle 110 on the screw threaded member 66. This adjustment is especially serviceable in adj us'ting the movable cylinder to the bed roll as the latter wears in use. By the adjusting means justreferred to the movable cylinder 44 may have its path of movement accurately predetermined so that it will occupy the exact desired position with respect to the bed roll 20. It may thus be brought into very close juxtaposition to the bed roll so that any work interposed between the bed roll and the cylinder will receive the pressure of the cylinder, the pressure beingadjustably predetermined through the proper tensioning of the spring 78, as before described.

m Means is provided for driving the bladed cylinders positively and in opposite directions, the said means comprising in the illustrated construction a gear 120 (Fig. 5) secured fixedly to the shaft or journal 122 of the bladed cylinder 42, the said gear 120 being arranged to be constantly in mesh with a gear 124 revolving loosely on a stub shaft 62 mounted in a bearing in the frame of the machine and in a bearing 128 carried by a bracket- 130. Fixedly secured to the hub of the gear 124 is a chain sprocket 132 around which passes a chain 134 operative to connect the sprocket 132 with a second sprocket 136 fixedly secured to the shaft or journal 138 of the movable cylinder 44. Since the cylinder 42 is positively driven by means which will be hereinafter described, the movable cylinder 44 is also positively driven through the chain and other connections just described, it being obvious also that the direction of drive of the cylinder 44 will be the reverse of the direction of drive of the cylinder 42. Since the oscillatable arms 60' which support the bladed cylinder 44 are mounted to swing about the center of the shaft 62 there is no shifting or disturbance of the sprockets or trouble from tightening or loosening of the chains due simply to oscillation of the arms 60.

Power means is provided for driving the feed roll 28 and also the bed roll when mesh when the bed roll moves to the position shown in Fig. 4. It will be understood then that the bed roll is positively driven from the feed: roll and in an opposite direction so that the bed roll and feed roll operate to feed 3a the work from front to rear of the machine when the work is first introduced, although as will be hereinafter described, the direction of feed may be changed at the will of the operator so that the whole of the work or any to given portion thereof may be fed back and forth repeatedly as often as is desired to secure repetition of the operations of the bladed cylinders. As will be made clear during the further description of the driving means, the cylinders are driven independently of the feed rolls and constantly inthe same directions while the feed rolls mayhave their directions ofrotation reversed repeatedly to feed the work from front to rear and from rear to front of the machine. Referringto Fig.

4 of the drawings it will be observed that duringthe feed of the work from front to rear of the machine the rear cylinder 42 assists in the feed of the work at the same time that it is operating upon the work in cooperation with the bed roll 20. During this time the front cylinder 44 is turning in a direction to operate very effectively upon the work which is being fed in a direction the reverse of that of rotation of this cylinder 44. Now, when the feed rolls 20, 28 are reversed in their direction of rotation, the cylinders 42, 44 continuing in the same directions as before, the front cylinder 44 becomes the cylinder which assists in feeding the work, while the rear cylinder 42 is assisted in its operation upon the work by the fact that the work is being moved in a direction opposite to that of rotation of this cylinder 42. It will thus be clear that there is provided an especially effective arrangement of the bladed cylinders in conjunction with the feeding means and that, while both cylinders continue to operate upon the work, first one and then the other becomes more efficient because of the change in the direction of feed of the work. As will hereinafter be described, the feed rolls may be reversed by the operator at will, thus enabling him to secure repeated operation of the bladed cylinders and of the rolls for heavy rolling upon any selected part of the work which, because of its condition, needs special treatment. In any case the whole piece of work will receive treatment even if itis passed. only once by the bladed cylinders which are so spaced that a part not operated upon by one bladed cylin der may be operated upon by the other. Hence, there is no necessity for introducing the work into the machine more than once. In other words, the handling of the work by the operator is reduced to the minimum. This is in direct contrast to many of the old constructions in which the work has to be introduced at least twice, since only one part at a time is operated upon by the machine, this being particularly true of present day fieshing and unhairing machines. A feature which adds considerably to the efiiciency of the cylinders 42, 44 resides in the fact that they are driven at a higher rate of speed than the feed rolls, and it because of this that each feed roll in turn may assist in feeding the work in co-operation with the bed roll.

It will be recalled that the front cylinder 44 is driven from the rear cylinder by means including the sprocket chain 134 (Fig. 5) whereby there is provided means for driving the front cylinder at the same rate but in a direction reverse to that of the rear cylinder 42. The means for driving the rear cylinder according to the illustrated construction will now be described. On the shaft 86 is a sleeve or hearing 200 (Fig. 7) on which is fitted a driving pulley 202 adapted to be driven by arranged to drive the bed roll when the latter moves into operative position, the driving connection being established by the gear I l-l on the bed roll shaft coming into meshing relation with the gear 142 on the feed roll shaft. Hence, the bed roll is driven through power means furnished by the drive of the feed roll, the two rolls moving in opposite directions at the same rate of speed to feed the work from front to rear of the machine and turning in the reverse directions again to feed the work from rear to front of the machine. his control of the feeding means is exercised by the operator in a manner to be described so that the whole of a piece of work or any given portion thereof may be fed forwardly and backwardly as often as is desired to secure thorough treatment by the cylinders and by the feed rolls themselves operating as rolling devices.

Referring to the means for reversing the direction of rotation of the feed roll and bed roll there is provided in the construction shown a manually controllable lever 3300 at the front of the machine where it easily accessible to the operator. As shown, it is mounted loosely on the stub shaft 22? (Figs. 9 and 10) and is connected by a link 302 to an arm 304 fixedly carried by a shaft 306 mount ed in bearings 307 carried by the base of the machine. This shaft 306 is a ship jier shaft which carries at its other end fixedly secured thereto a shipper yoke 308 arranged to be connected in the usual way, that is, by rollers and a groove to a double cone 310. This cone is movable in opposite directions to operate a clutch 31.2 and, alternatively, a clutch 314. hen the clutch 312 is operated it connects the clutch gear 272 to drive the shaft 274 so that the work is fed from front to rear of the machine. Vhen clutch 314 is operated by a reverse movement of the control. lever 300, the clutch gear 278 is connected to drive the shaft 274 in the opposite direction so that the work is fed from rear to front of the machine. In the intermediate position of the double cone 310 the feed rolls are statirmary. Hence, the bed roll with its gear 1H1 may be moved. into co-operative relation with respect to the feed roll 28 and the driving gear 142 thereof while the latter is stationary. It will be clear that the manually controllable lover 300 may be utilized to cause feeding of the work from front to rear of the machine or from rear .to front or that the work may be held stationary for any desired length of time while the cylinders operate upon a certam portion of the work.

l urthermore, after a given portion of the work has been operated upon as often as may be necessary to secure the desired results the whole piece .of work may be passed continuously in one direction from front to rear of the machine to discharge the piece of WOlk and to insure the surface of the work between parts which have received repeated operations and those receiving less treatment. The result is that the work as it comes from the machine is free of any lines or markings and has a clear even color.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is 1. In a machine of the character described, feed rolls for supporting and feeding work, a pair of cylinders, means for causing simultaneous operation of the cylinders on the work at a predetermined pressure, and means under the control of the operator for reversing the direction of feed of the feed rolls while the cylinders continue operating as before, whereby portions of the work may be fed in opposite directions and operated upon repeatedly without withdrawing the work from and re-introducing it into the machine.

2. In a machine of the character described, a bed roll, a feed roll co-operating therewith for feeding work, two cylinders arranged to co-operate with the bed roll in operations on the work, means for moving the bed roll and one of the cylinders between work receiving and work operating positions, means for driving the cylinders in opposite directions and for causing them to operate simultaneously on the work, and means under the control of the operator for reversing at any time the feeding movement of the two rolls while the cylinders continue operating as before so that the Work may be fed in opposite directions and the whole or selected portions thereof operated upon repeatedly after the work has once been introduced into the machine.

3. In a machine of the character described, feed rolls for supporting and feeding work, a pair of arms pivotally mounted to move one feed roll into co-opera-tive relation to the other, the pivotal mounting of the arms being in the plane defined by the axes of the cooperating rolls, thus providing such support for the rolls as to make possible heavy rolling of the work during feeding thereof, a cylinder for operating on the work, and means under the control of the operator for reversing the direction of feed of the feed rolls while the cylinder continues operating as before, whereby portions of the work may be fed in opposite directions and operated upon repeatedly without withdrawing the work from and reintroducing it into the machine.

4:. In a machine of the character described, a bed roll, a feed roll co-operating therewith for feeding work, power means for driving both rolls to feed and to roll the work, two cylinders, one located on each side of the feed roll for operating on the work in co-operation with the bed roll, means for moving the bed roll and one of the cylinders between work receiving and work operating positions, means for driving the cylinders in opposite directions and for causing them to operate simultaneously on the work, and means under the control of the operator for reversing the feeding movements of the two rolls while the cylinders continue in the same 1 directions as before whereby the cylinder in advance 111 the direction of feed of the work aids in feeding the work while the other cylinder operates on work passing in a direction opposite to that of its movement of rotation thus securing maximum operating results from the cylinders irrespective of the direction of feed of the work.

5. In a machine of the character described, a feed roll, a cylinder for operating on work, means for mounting the feed roll and the cylinder for rotation in the frame of the machine, a bed roll mounted for movement toward an d away from operative position with respect to the feed roll and cylinder, a second work operating cylinder, power means for moving the last mentioned cylinder into cooperative relation with the bed roll, means fordriving the work operating cylinders simultaneouslyand in opposite directions, and means for causing at the will of the operator feed movements of the work first in one direction and then in another so that the work once introduced into the machine.

6. In a machine of the character described, a feed roll, means for mounting the feed roll in the frame of the machine, a bed roll for supporting work, a support for the bed roll movable to position the bed roll in work receiving and in work feeding positions, a cylinder for operating on work supported on the bed roll, a second cylinder for operating on the work on the bed roll at the other side of the feed roll, power means for moving the second cylinder into and out of co-operative relation with respect to the bed roll, power means for rotating the cylinders in opposite directions and for causing them to operate simultaneously upon the work, and means for causing the feed roll and the bed roll to change at any time the direction of their rotation whereby the work may be fed in opposite directions and operated upon repeatedly at the will of the operator.

7. In a machine of the character described, a feed roll, a cylinder for operating on Work, means for mounting the feed roll and the cylinder for rotation on the frame of the machine, a bed roll mounted for movement toward and away from operative position with respect to the feed roll and cylinder, said feed roll and bed roll co-operating as feed rolls for the work, a second work operating cylinder, power means for moving the last mentioned cylinder into co-operative relation with the bed roll, means for driving the work operating cylinders in opposite directions of speed than the feed rolls are driven, and

means for causing at the will of the operator feed movements of the work first in one dimotion and then in another so that the work or any given portion thereof may be operated upon repeatedly after the work has been once introduced into the machine.

8. ln a machine of the character described, a feed roll, means for mounting the feed roll in the frame of the machine, a bed roll for .ipporting w rk, a support for the bed roll l(21l)l6 to position the bed roll in work rece and in work feeding positions, said feed roll being adjustable to a definite spaced relation with respect to the bed roll, heavy spring means for yieldingly maintaining the feed roll in adj sted position, a cylinder for operating on work supported on the bed roll, a second cylinder for operating on the work at the other side of the feed roll, power means for moving the second cylinder into and out of co-operativc relation with respect to the bed roll, power means for rotating the cylinders, the feed roll and the bed roll for causing operations on the work and heavy rolling thereof simultaneously with the feeding of the work, and means for causing at the will of the operator the feed roll and the bed roll to change the direction of their rotation whereby the work may be fed in opposite directions and operated upon repeatedly after it has been once introduced into the machine.

9. In a machine for working on hides, skins, and leather, a feed roll mounted for rotation in the frame of the machine, a bed roll for supporting work and for co-operating with the feed roll in feeding the work, a support for the bed roll directly under the feed roll, means for moving the bed roll alternately to inoperative work receiving position and to work clamping and feeding position directly in line between the feed roll and said support, whereby heavy rolling of the work takes place simultaneously with the feeding thereof, and work operating cylinders located one on each side of the feed roll for co-operation with the bed roll in operating on the work.

10. In a machine for working on hides, skins and leather, a feed roll mounted for rotation in hearings in the frame of the machine, a bed roll movable alternately from work receiving position to work feeding position in co-operation with the feed roll, a work operating cylinder located at one side of the feed roll for co-operation with the bed roll in operating on the work, a work operating cylinder movable into and out of cooperative relation to the bed roll, a shaft supported by the frame of the machine in parallel relation to the bed roll and the movable cylinder, eccentrics on the shaft, and connections from the eccentrics to the bed roll and to the movable cylinder for moving the bed roll and cylinder alternately into co-operatix e relation and to a widely spaced work receiving relation with respect to each other.

11. In a machine for working on hides, skins and leather, a feed roll mounted for rotation in the frame of the machine, a bed roll movable alternately into and out of cooperative work clamping relation with the feed roll, means for providing an unyielding support for the bed roll in the plane defined by the axes of the rolls when they are in co-operative relation to each other, power means for driving both the bed roll and the feed roll whereby the work may be subjected to a heavy rolling operation, and a work operating cylinder arranged for co-operation with the bed roll in operating on the work.

12. In a machine for working on hides, skins and leather, a feed roll mounted for rotation in the frame of the machine, a bed roll movable from work receiving position into (to-operative relation with the feed roll in feeding the work, work operating cylinders one on each side of the feed foil for co-operation ith the bed roll in operating on the work, means for adjusting the work cylinders and the feed roll toward and from the bed roll, and means for mounting the cylinders and the feed roll to yield in accordance with variations in the thickness of the work.

13. In a machine for working on hides, skins and leather, feed rolls for feeding work, one of the feed rolls serving also as a bed roll for supporting the work during oper tions thereon, a pair of cylinders for operating at predetermined pressures on the work in co-operation with the bed roll, means for driving the cylinders for rotation in opposite directions, and means for reversing the feed of the feed rolls while the cy nders continue their rotation in the same directions as before whereby one of the cylinders assists in the feeding of the work during direct feeding thereof and the other during reverse feeding thereof.

14. In a machine of the character described, a bed roll, a feed roll for co-operation with the bed roll in feeding work, a cylinder having blades for operating on the work supported on the bed roll, means having a common element for moving the cylinder and the bed roll one in a downward direction and the other in an upward direction into work receiving position, the said means being operative also to move the bed roll and the cylinder in reverse directions into (o-operative relation with respect to work supported on the bed roll, and means for mounting the bed. roll and the movable cylinder for operation by the moving means, the construction and arrangement of the moving means being such that movement of the bed roll and cylinder in opposite directions reduces the strain and jar on the machine parts.

15. In a machine of the character described,

a feed roll, a bed roll movable from and toward the feed roll, a bladed cylinder movable toward and from the bed roll, a shaft, an eccentric on the shaft for moving the bed roll, and a second eccentric on the sl "aft for moving the bladed cylinder, the eccentrics being in reverse relation thereby reducing to a minimum the strains tending to bend the shaft.

16. In a machine of the character described, means con'iprising a bed roll for supporting and feedingsheet leather material, a pair of cylinders for operating on the sheet material, one of the cylinders being stationary in space and the other movable toward and from the bed roll, means for driving the cylinders for rotation in opposite directions, and means for reversing at will the feed of the sheet material, whereby the sheet material or any given portion thereof may be operated upon repeatedly to obtain the results desired by the operator.

17. In a machine of the character described: means comprising a bed roll for supporting and feeding leather material, a cylinder for operating at a predetermined pressure on the leather material supported by the bed roll, means for driving the cylinder at a higher speed than that of the feed of the sheet material, and means for reversing at will the direction of feed of the leather sheet material while the cylinder continues to rotate in the same direction as before, whereby the leather material may be subjected to repeated operations upon the whole or any given part thereof.

18. In a machine for working on hides, skins and leather, a feed roll mounted for rotation in the frame ofthe machine, a bed roll movable from work receiving position into cooperative relation with the feed roll to feed the work, work operating cylinders one on each side of the feed roll for co-operation with the bed roll in operating on the work, and means for moving one of the cylinders into co-operation with the bed roll after the latter has moved into co-operative relation with respect to the other work operating cylinder.

19. In a machine of the character described, a feed roll, means comprising a movable bed roll for supporting and feeding hides, skins or other leather material, a cylinder for operating on the leather material supported by the bed roll, means for operating the cylinder at a predetermined pressure with respect to the leather material supported by the bed roll, and power means for moving the cylinder into the desired co-operative relation with respect to the bed roll after the latter has moved into cooperative relation with respect to the feed roll.

20. In a machine for working on hides, skins and leather, feed rolls for feeding work, one of the feed rolls serving also as a bed roll for supporting the work during operations thereon, a pair of cylinders, the cylinders being located one on each side of the plane passing through the feed roll and the bed roll, means for driving the cylinders in opposite directions and at a higher speed than that of the feed rolls, means for causing the cylinders to operate at predetermined pressures with respect to the work supported by the bed roll, and means for reversing the direction of rotation of the feed rolls while the cylinders continue rotation in the same directions as before whereby first one cylinder and then the other operates to assist in feeding the work while operating thereon.

In testimony whereof I have signed my name to this specification.

JOHN W. ODONNELL.

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