US1992175A - Machine for operating upon hides, skins, and pieces of leather - Google Patents

Description

Feb. 26,1935. A. BALLARD 2,

MACHINE FOR OPERATING UPON RIDES, SKINS, AND PIECES OF LEATHER Filed June 19, 1933 2 Sheets-Sheet 1 N US Feb. 26, 1935. H. A. BALLARD I 1,992,175 MACHINE-FOR OPERATING UPON HIDES, SKINS, AND PIECES OF LEATHER- Fild June 19, 1933 2 Sheets-Sheet 2 Patented Feb. 26, 1935 PATENT 1 OFFICE MACHINE FOR OPERATING UPON HIDES, SKINS, AND PIECES OF LEATHER Harrie A. Ballard, Beverly, Mass 'assignor to The Turner Tanning Machinery Company, Portland, Maine, a corporation of Maine Application June19, 1933, SerialNo. s7s, 5o1

- 2s Qlaims. (01 149-46) This invention relatesto machines for operating ,upon hides, skins, and pieces of leather. While the invention is illustrated as embodied in a machine for fleshing hides and skins it is to be 5 understood that the invention and various im.

portant features thereof may have other applications and uses. Y

-Machines for performing such operations as fleshing, unhairing,and.putting-out or setting upon hides, skins, and pieces of leather .comprise characteristically a bladed cylinder for operating upon the work while the latter is supported by a bed roll, one or more feed rolls being provided for co-operation with the bed roll infeeding 15' pieces of work past the, bladed cylinder. It is an object of the invention to makeprovision for automatic adjustment of the bed roll and cylinder relatively to each other for each piece of work.

placed :upon the bed roll for treatment. In this way each piece of work may receive individual treatment in the sense that the pressure under which the piece of work is treated is suited .to that piece of work, particularly with respect to the thickness thereof as gaged at some selected point. 1 v

Following the usual beamhouse operations, hides and skins are subjected to tanning operations to convert them into leather. It is not, at the-present time, common practice to sort hides, 30 before tanning, into various batches according to thickness although it would be distinctly advantageous to do so since thinner hidesare often subjected for a longer time to the action of tanning solutions in the vat than is necessary, treatment of the hides usually continuing until the thickest of the batch are thoroughly tanned throughout. It is considered that a distinct step in advance would be made by providing, in connection with machines of the beamhouse type, facilities for sorting the hides into batches according to thickness dimensions thereof, especially if little or no extra effort be required on the part of the operator. Accordingly, it is a further object of the inventionto indicate to the operator thethickness dimensions of the various hides as'they are subjected to one or another-of the beamhouse operations, so that the hides'may be assorted correspondingly into piles as they'are delivered from the machine operation."

With the above and various other objects in view there isprovidedin the illustrated machine, as an important feature of the invention, means controlled by the work for securing relative adjustment between a bladed cylinder and a bed roll as a preliminary to treatment of each piece of work by the bladed cylinder while the work is backed by the bed roll. In this way, the pressure atwhich a given operation is performed is suited to eachpiece of work with correspondingly good results. Conveniently'a gaging means for the work isassociated with thebed roll to adjust the latter with respect to the bladed cylinder, ad-

'ustment of the bed roll being controlled by each piece of work through the operation of said gaging means, and the arrangement being such that a piece of work is introduced into the gaging or 'moving toward each other to gage or caliper the work as the bed roll moves towardthe bladed cylinder. Immediately after the gaging operation takes place the bed roll is secured in its adjusted relation to its operating means and, perforce, to the bladed cylinder so that the work is operated upon at a pressure predetermined by the gaging means. Since machines of the beamhouse type commonly operate upon only one-half of a piece of work at each cycle of the machine, the workbeing reintroduced for treatment of the portion remaining untreatedfollowing the first introduction into the machine, provision is made for retaining the adjustedrelation of the bed roll during treatment of the second half of the work. In other words, each piece of work is gaged but. once and the pressure at which treatment will be performed is fixed but once for each piece of work although itis introduced twice into the machine to complete treatment thereof.

It is an important feature of the invention that means is provided, in association with a bed roll movable, between work receiving-and work presenting positions with respect to a bladed 7 cylinder in a,ma'chine cf the beamhouse type, for indicating to the operator the thickness dimension of each piece ofrwork treated by the machine, thus enabling him to place the treated hide with. others of like thickness dimension in a selected pile. In this way sortingof thehides for thickness is greatlyfaciiitated and without any extra operation, such as might. be prohibitive under certain conditions because of the time or labor involved. r

These and other important features of the invention and novel combinations of parts will now be described in detail in the specification and then pointed out more particularly in the appended claims.

In the drawings,

Fig. 1 is a view in front elevation and partly in section of a machine showing one embodiment of the invention;

Fig. 2 is a sectional view along the line II-II of Fig. 1;

Fig. 3 is a sectional view along the line IIIIII of Fig. 1; V

Fig. 4 is a detail view of a cam disk shown at the bottom of Fig. 3; and

Fig. 5 is a detail view of other parts shown in Fig. 3.

In the illustrated machine, which is especially designed for performing fieshing operations upon hides, there is provided a bladed cylinder mounted for rotation in bearings carried by the frame of the machine, means (not shown) being provided for driving the bladed cylinder continuously at a relatively high rate of speed.

For presenting a piece of work to the bladed cylinder 10-there is provided a bed roll 12 mounted on a shaft 14 carried in bearings at the upper ends of swing arms 16 mounted for effective swinging movement about a shaft 18; Just be fore the bed roll 12 reaches work presenting position with respect to the bladed cylinder 10 it presses the work against a feed roll 20, shaft 22 of which is carried in the usual manner by blocks (not shown) slidable in the frame of the machine and held yieldingly in position by springs one of which is shown at 24 in Fig. 2. As illustrated, the shaft 22 is provided with a sprocket wheel 26 (Fig. 1) arranged to be driven by a chain connection to a sprocket 28 on a power shaft 30. The feed roll shaft 22 has fixedly secured thereto a gear 32 with which a gear 84 on the shaft 14 comes into mesh when the bed roll 12 moves into co-operative relation with respect to the feed roll 20, the arrangement being such that the bed roll 12 is driven from the feed roll 20 and ceases to be driven as soon as'it moves away'from the feed roll.

As an important feature of the invention, means is'provided for gaging or calipering each piece of work and adjusting the spacing of the bed roll with respect to the bladed'cylinder'in accordance with the results of the calipering operation. It is to be understood that the spacing referred to is that found when the bed roll has reached its closed or work presenting position with respect to the cylinder. By this means the pressure of the fieshing operation is adjusted to each piece of work in accordance with the thickness dimension thereof. As shown, the calipering or gaging means-comprises two gage members 40, 42, of which the gage member 42 maybe considered the fixed gage while gage member 40 is the movable gage in the'calipering operation. The gage member 40 is carried at the corresponding upper ends of bell crank levers 44 pivotally mounted upon the shaft 18, the bell crank levers 44 each having a horizontal arm 46 carrying a weight 48 adjustable thereon, and said arms 46 being arranged to contact with stops 50 mounted on the machine frame when the bed roll is moving toward work receiving position. Extending from the hub portion of the bell crank lever 44, is an extension 52 provided with a set screw 54 the lower end of which is adapted to contact with a short arm 56 carried rigidly by the shaft 18. Extending between and connected to the arm 56 and the arm 46 of each bell crank 44 is a spring 58 of suflicient strength to hold the screw 54 in contact with the arm 56 during gaging operations, the said springs yielding at other times in the operation of the machine. It will be understood, then, that if the gage member 40 be moved in a counterclockwise direction in Fig. 2, as for instance by the introduction of a piece of work between the members 40 and 42, it will cause rotation of the shaft 18 in a counterclockwise direction, the spring 58permitting relative movement between the bell crank lever 44 and the shaft 18 under excessive or suddenly applied pressure, or when the shaft 18 is locked as will be hereinafter described.

The other gage member 42 is carried by a pair of arms 60 (Figs. 1 and 2) pivoted upon the'shaft l8 and pivotally connected at their lower ends by pins 62 to bifurcated members 64 which form part of links or 'pitmen 66, the other ends of which are pivotally connected to crank arms 68 on the drive shaft 36; As most clearly shown in Fig. 1 the swing arms 16 of the bed roll 12 are pivotally connected at their lower ends by rods 70, 71 to the arms 60carrying the'gage 42. The swing arms 16 are also connected adjacent their upper ends to the arms 60 of the gage member 42 so that the swing arms 16 will move with the arms 60 when the latter are oscillated by the crank arms 68. This latter. connection comprises, in each casc,--a link 72 (Figs. 2 and 3) pivoted at 74 to thearm 60 andat '76 to a block '78 'slidable in a'groove 80in a bracket 82 rigidly connected to theswing arm .16. ;It isclear then that the swing arms 16 will oscillate with the arms 60 (of the gage member 42) when the latter are oscillated by the crank arms 68 since the swing arms 16 are 'connected at two places (by rod '70 or '71 and by link 72) on opposite'sides of. the

shaft 18. To permit the described adjustment'of the arms 16 on the arms 60, the arm 16 at the swing arms 16 and, perforce, of the bed roll 12 as a result of the calipering operation. Since the arms 60 supporting the gage member 42 are connected to the bed roll swing arms 16 at two points, as just mentioned, said gage member 42 is the relatively stationary gage member at'the time of calipering the work. A piece of work introduced between the gagemembers 40 and 42'will cause relative movement between the gage members, the gage member 40 moving to the left in Fig. 2, such movement of the gage member 40 causing rotation of the shaft 18 in a counterclockwise direction with the result that an arm 84 (Fig. 3) secured to the shaft 18 is also moved in a'counterclockwise direction and thus pulls downwardly upon the adjacent end of the lever 72 through a link connection 86 extending. between the arm and the lever. Downward movement of this end of the lever 72 results in upward movement in the other end of said lever '7 2 whereby the block '78 is moved along the groove 80 in the bracket 82. this movement of the block having the result of adjusting the upper ends of the swing arms 16 a certain distance to the right in Figs. 2 and 3, that is, in a direction away from the corresponding ends of the arms 60. It follows, therefore, that movement of the gage member 40 to the left in Fig. 2 away from the gage member 42 results in adjusting the upper through link connections with the crank arms 68,

it follows that adjustment" of the swing arms 16 with respect to the arms 60 'eifects also adjustment of the bed roll 12 .with respect to the bladed cylinder 10. This adjustment of the swing arms 16 with respect to the arms '60 has just taken place in '-the position of the parts shown in Figs. 2 and 3 of the drawings. As the bed roll 12 and gage members 40, 42 movefurther toward the bladed cylinder 10, means is op-' erated to lock the swing arms 16 in their adjusted positions with respectto the arms60 so that the gaged'p'osition of thebed roll'will, be

' maintained while the machine is operating upon the piece of work calipered.

The locking means which has just been gaged or referred to above comprises ratchetwhee'ls or plates-90, 92 (Figs. 1 and 3) rotatably mounted on the rod 71 carried by the lower ends of the swingarms 16 and 60 at the i tions sothat pawl 96fprevents rotation of theratchet wheels in a counterclockwise direction in wise direction in the same figure, it being under% stood that the ratchet wheels 90, 92 with a hub portion thereof extending to the rightlof the wheels in Fig. '1 are all joined together to move as one. piece. As shown, the, pawls, 96 .and 98 are pivotally carried by a rod 100 rigidly mounted on an adjacent portion of. the swing arm 16. Secured at 102 to the hub of the ratchet wheels 90, 92 is a metallic band 104 which is passed helically around the hub' and also around a pulley 106 secured to the shaft 18, said metallic band being also secured to the pulley 106 at the point 108/ It follows that when the ratchet 'wheels' 90, 92 are locked against rotation'in either di- V rection by the pawls 96; 98, the shaft 181s also locked against rotation in either direction.

.I-Ience after shaft 18 has been adjusted by:the

calipering or gaging means 40, 42,"as above described, it is locked in its adjusted position by locking means including the pawls 96, 98.

For releasingthelocking mea'nathat is, for moving the pawls 96, 98 to unlocking position so .that adjustment of the bed roll 12 with'respect to the bladed cylinder 10 may be made upon introduction of each fresh pieceofiwork, there is provided in the illustrated construction a control mechanism for the locking means comprising disk 110 (Figs. 1 and 2) carrying four equally spaced pins 112, each ofwhich is provided with an antrifriction roll to lessen friction as the pin sweeps along a portion of the upper edge, of a lever 114 pivoted a t-116 on' the machine frame, the said lever 114 being-held by'a spring 118 with an end portion thereof projecting into thepath of pins 112. At each. revolution of the cranks 68 on'the power shaft 30, the lowe'rends of the swing arms 16 and 60are swung alternately to the right and to the left in Fig. 2, thisfigure illustrating the bed roll 12 as approaching its work presenting position with respect to the cylinder 10, 'so that the lower ends of the swing arms 16and- 60 are approaching the end of their swing to the rightin-Fig. 2,'durin'g which move;

ment the'disk 110 isbeing rotated in thedirection of the -arrow through the engagement of one of the pins 112 with the free end of the lever 114 Rotation of the. disk 110'is accompanied by rotation of the rod 71. (serving as a shaft)v i to which thedisk is fastened. I Also fastened -to the-shaft 71 is a cam disk 120 having two sets of cams, one set comprising cams 122, 124 being very clearly shown in Fig. 4 of the drawings, there being a corresponding pair of cams 126, 128 diametrically opposite cams 122, '124. As most clearly shown in Figs. 3 and 4, the cams 122 and 124 have. caused lifting of the pawls 96 and 98 the said pawls being provided with camended pins 130,132,-respectively, which ride upon the cams to lift the pawls to inoperative position. Subsequentlyduring continued rotation of the cam disk 120, the pins 130, 132 drop off the cams to permit .re-engagement of the pawls 96 and 98 with ratchet wheels 90 and92, respectively. .As already pointed out there are but two sets of cams on the cam disk 120, the sets being diametrically opposite each other. Consequently the ratchet wheels 90, 92.are unlocked and again relocked only twice in a complete revolution of the shaft'll and of the disk 110. This. means that the V 1 machine also, the purposebeing to maintain the Fig. 3 while pawl 98 prevents rotationin a clock? adjusted position. of the "bed roll while a given piece of work is being operated upon twice to complete treatment thereof, it being understood that each piece'of work isintroduced twice into themachine since approximately one-half of the work is treated in any givencycle of the machine.

Occasionally it mayhap'pen that the operator desires .to reintroduce a piece. of work without changing the adjusted position. of the bedroll as effected by calibration of the same or a previous piece of 'work; In that c'asefhe may depress a treadle (Fig. 1)v pivoted. at 142 on the .frame of the machine and connected by a chain 144 to the lever 114 so that the latter may be depressed to remove its operative end from the path of the pins 112 on the disk 110. Then the rotated to effect release and resetting. of the pawls 96,98. As shown in Fig. 1,the. auxiliary treadle 140 is positioned above a clutch treadle so that it may be readily depressedby the same foot that operates the. clutch treadle to control operations of the machine.

As a matter of 'precautionfthere isprovided a stop member 146 held yieldingly by a spring 148 in the path of the pins 112 on the disk 110 to prethe drum by'a weight 163,, the other end of the a chain being arranged to pass/over an idler wheel machine frame, the chain being secured to a '170'mounted upon a stationary extension of the v metal band or ribbon 172 -(Fig .-:3).;in turn ,con-, nected .toa metallic band or. ribbon 174 arranged to bewound uponawheel 176 havinga grooved periphery to, receive the .band 1'74. The wheel 176. is secured to a shaft 178 mounted ina bracket 179 secured to the machine frame, the shaft 1'78 being provided with a hub upon which windsa tape 1 80, the other end of which is secured to the free end of a lever 182 pivotally mounted on a shaft. 184, the arrangement being such that the lever 182. is operated by a link connection 186 with a lever 188 arranged to be .operatedby the lever'lZ of the bed roll adjusting means. The lever '72 is not directly connected to the level 188 but is so connected as to make lever 188 responsive to the difierent adjusted positionsof the lever 72. For this purpose the lever 188 has a notched end portion 190. (Figs. 3 and'5) adapted to be contacted by a knife edged member 192 carried bythe end of the lever '72. tion of the drawings, it will be clearthat the greater the movement of the upper end of the swing arm' 16 to the right away from the gage carrying arm '60 (that is, the greater the distance of the bedroll 20 from the cylinder 10) the greater will be the depression of the knife-member carrying end of the lever72. With maximiun depression of the knife-member carrying end of the lever-72 the knife member 192 will contact with the fiat end 194 of the lever 188, with theresult that the. lever 188 will .be operated to-maximum extent, in'which case the pointer 162 moving over the dial 160 will indicate a hide of the maximum thickness for which the machine is set. On the other hand, lighter hides will not depress the knife-member carrying end of the lever '72 to suchan extent as that above mentioned, in which case the'knife-member 192 will engage with a slanting surface 196 on the end of the lever 188, thus providing for a much less. downward movement of the lever 188, with the result that the pointeiflwill indicate a hide of. lesser thickness. In this connection'itis to beremembered that, in Figsp2 and 3, the bed roll 12 and the swing arms 16 and 60 havenot completed their movement to the left into :work presenting position with respect to the bladed cylinder 10 and it is during this movement that the lever 188 is depressed by the lever.72. Subsequently the lever 72 is locked in its recently adjusted position through locking of the shaft 18. Hencethe pointer 162 is held in indicating position, in accordance with'the calipering of the hide by the calipering or gaging members 40, 42, during all the time that the bed roll 12 ispressing the work against the cylinder 10.. .Therefore the indicator may easily be read du ing that time. When the swing arm '16 moves away from set screw 193' (Fig. 3) carried by a bell crank lever 195, a brake lever 197 connected to bell crank lever 195 by'a link 199 is permitted to engage the periphery of a brake wheel.203 to brake the.latter, thereby preventing the indicating pointer 162 andconnected parts from swinging back to zero position with all the jar and wearand tearing vclved. The brake does not hold the indicator parts in indicating. position but only prevents unnecessary-noise and. wear .on the parts.

When the bed roll 12 is swungto open position, in which a piece of work'may be thrown over the bed roll as a preliminary to treatment thereof, means becomes operative to swing the gage member 40 away from the gage member 42 so that a depending portion of a pieceof work will readily drop in between. the two gage Upon inspecmemberswlien the piece ofwork is thrown over the bed roll 12. This means-comprises, as before described, the stops 50 mounted on the machineframe imposition to engage the arms 46' of thebell-crank levers 44 whereby the bell crank levers 44 are held from following the swing arms 16 and 60, the bed roll 12being at the upper end of the swing arms 16. Hence the gage member 40. is leftbehind while the gage member 42 .moves with the-bed roll 12 as the latter swings to work receiving position. It will be readily understood that the g e members approach each j other and. finally caliper the work asthe bed roll swings-in the opposite direction 1 to present the work to the cylinder 10. Itis also desirable that thegage member 40' should move away from the'gage member 42 after the calipering operation and after locking of thebed-rollswing arms 16 in adiusted position with respect to the gage swing arms 60. The purpose of this separation of the gage members 40, 42 isto releasethe work so that it is not dragged between these twofgage'rnembers while being operated upon and fed out of 'I'he means for causing this sep-' the machine. 7 v aration of the gage members 40, 42 comprises a lever 200 (Fig 1) mounted pivotally upon the rod 7,0,aand an exactly similarlever 201 (Figs. 1 and 2) mounted on shaft '71, and having its upper arm in'sliding. engagement with an arm 292 projecting downwardly from the bell crank ,lever 44., Asthe lower ends of the swing arms 16 and 60 continue their movement to the right in Fig, 2, a =set ;screw 204 adjustably carried in the lower arm 206 of the'lever 201 (the same leingtrue of levern200) engages with the ma.-

chine frame, thereby causing rotation of the.

lever 201 and 200) in: a clockwise direction about the, shaft '71 and rod 70, the levers 200 and 201 being in this-way caused tooperate the bell crank levers 44 in a counterclockwise direction (Fig. 2) ,to movethe gage member 40 away from thegage member 42. In operating the machine shown in the drawings, a hideis placed upon the bed roll 12 when the latteris in. open or work receiving position,

a depending portion of the hide dropping in between/the gage members 40,. 42 which at the time are spaced rather widely from each other; Upon depressing the mreadle 1 50, the clutch {(not shown) is thrown in with the .result that the bed roll'12 is moved. toward the bladed cylinder 10 until it presses the work thereagainst When the bed roll reachestheposition shownin Fig. 2 a gaging or calipering operation is performed by the gage members 40 and 42 accompanied by adjustment-of the bed roll'swing'arms'16. relative tothe gage supporting swing arms by which the bed roll 12 is adjusted with respect to' the bladed cylinderlO in accordance'with the thickness of the work to be operated, upon. Almost immediately after this adjustment of the-bed roll, tiepawls96 and 98 operate to introduction of the 'work into the machine.

When the work hasbeen completely fed out the 1 of the United States is:

operator again depresses'the treadle 150 whereupon the bed roll 12 again moves to work re- 'ceiving position. Then the piece of work is reversed upon the bed roll with the untreated portion depending from the side of the bed roll adjacent to the bladed cylinder." A third depression of the treadle 150 resultsin movement of the bed roll 12 to work presenting position with respect to thecylinder 10, no effective calipering of the work taking place this time since the-- pawls remam locked during this second treatment. of the same piece of work. After the piece of workhas been fed out again, the treadle 1501s depressed for the fourth time in order to bring the worksuppqrt ,12 into work receiving position for a fresh piece of work. Upon receiving the treated piece of work, theoperator places it in a pile with other pieces of the same the bed roll and cylinder with respect to each other wherebyrth'e latter are relatively adjusted automatically for each piece of Work introduced into the machine. 7 v

2. In a machine for operating upon .hides,

skins, and pieces of leather, bed rollv and cyl inder members one of which is movable toward and from the other to permit the introduction of a piece of work, means for moving the move able member, and gaging means carried by, themovable member I operative automatically to adjustsaid movable member with respect, to the other member in accordance with the thickness of each piece of work. c

3. In a machine for operating upon hides,

skins, and pieces of leather, bed roll and cylinder members one of which is movabletoward and fromthe other topermitthe introduction of a piece of work, means for moving the movable member, and gage members one ofwhich is movable with the .said movable member sothat a piece of work introducedbetween the bed roll and cylindermembers will also be introduced between the gage members, said gage members being operableto gage the Work during relative approaching movement of the bed roll and cyl-v inder members, and having connections with said movable member to adjust the normal spacing between said bed roll and cylinder members when in work treating position. 4. In a machine for operating upon hides, skins, and pieces of leather, bed roll and cylinder members one of which is movable toward andfrom the other to permit the introduction of a piece of work, means for moving. the movable member, gaging means carried by the movable member. oparative automatically to adjust said movable member with respect to the other memberin accordance with the thickness of each piece of work, said adjustment taking place preliminarily to a work treating operation, and means under the control of the operator-to securev maintenance of pered by the work; gaging members 5. In a machine for operating upon hides, skins,

and pieces I of leather, bed roll and cylinder members one of which is movabletoward and from the other .to permit the introduction of a piece of work, meansfor moving the movable member,

gaging means carried-bythe movable member operative automatically to. adjust said movable member with respect to the other. member in accordance with the thickness of each piece of work, and means responsive to the gaging means to indicate to the operator the thickness dimension of each piece o-f work following gaging thereof.

, 6. In a machinefor operating upon hides, skins, and pieces of leather, bed roll and cylinder members one of which is movable toward and from the other to permit the introduction of a piece of work, means for moving themovable member, gaging means'carried by the movable member operativeautomatically to adjust said movable member with respect to the other member in accordance with the thickness of each piece of work, and indicating means including a dial and a pointer responsive to the gaging means for indicating thickness dimensions of each piece of work introduced into the machine.

7. 'In a machine for operating upon hides, skins, and pieces of leather, a bladed cylinder, a bed roll movable between work receiving position and work presenting position with respect to said bed roll, and work gaging means controlled by the work and automatically operative to adjust the normal spacing of the bed roll with respect to the bladed'cylinder for each piece of work introduced into the machine.

, '8. In a machine for operating upon hides, skins,

and pieces of leather, a bladed cylinder, a bed roll movable between'work receiving and work spaced'topermit the introduction of work for a gagingv operation,.and connections between the work gaging, members and the bed roll to adjust the normalspacing 'of the latter with respect to the :bladed cylinder for each piece of work cali- 9. In a machine for operating upon hides, skins, and pieces of leather, a bladed cylinder, a bed roll movable between work receiving position and work presenting position with respect to said cylinder, work gaging means automatically operative to'adjust the normal spacing of the bed roll with respect to thebladed' cylinder ,for each piece of work introduced into the machine, and means for locking the bed rollin its adjusted position with respect to the bladed cylinder; 1

110. In a machine for operating upon hides,

' skins and pieces of leather, abladedcylindenabed ofthe locking means during repeated operation 7 of. the machine.

11'.- In' a machine for operating upon hides,

skins, and pieces of'leather, abladed cylinder, a bed roll movable between work receiving'and work presenting positions with respect to the bladed cylinder, means for causing such move-' the latter relatively tothe bladed cylinder.

12. In a machine for operating upon hides, skins, and pieces of leather,- a bladed cylinder, a bed roll movable between work receiving and work presenting positions with respect to the bladed cylinder, means for causing such movements of the bed roll, a gage member movable with the bed roll in its described movements toward and from the bladed cylinder, a second gage member, connections between the first-mentioned gage member and the bed roll to adjust the latter relatively to its moving'means and thus to the bladed cylinder, and means for locking the bed roll in adjusted relation to its moving 'means'whereby the spacing of the-bed roll with respect to the bladed cylinder is maintained during treatment of a given piece "of work.

13. In a machine for operating upon hides, skins, and" pieces of leather, a bladed cylinder, a bed roll movable between work receiving and work presenting positions with respect to the bladedcylinder, swing'arms for supporting the bed roll, a shaft upon which said'swing arms are mounted, a gage member co'nnected'to said swing arms and also pivotaliy mounted on said shaft, a second gage member arranged to adjust the bed roll and the first-mentioned gage member relatively to eachother, and power means connected to thefirst-mentioned gage-member to operate the bed roll between work receiving and work presenting positions. a I

14. In a machine for operating upon'hides, skins, and pieces of leather, a tool for -operating on a piece of work, a work support movable between work receiving and work presenting positions with respect to said tool, a gage member movable with the work support, a second gage member arranged to be held against movement with the work support, the gage members becoming operative to gage the work as the work supp ort moves toward work presenting position with respect to said tool, and connections, between the gage members and the work support to adjust the latter in its normal spacing with respect to said tool.

15. In a machine for operating upon hides, skins, and pieces of leather, a tool for operating on a piece of work, a work'support movable between work receiving and work-presenting positions with respect to said tool, a gage member having a normally fixed spacing with respect to said tool when the work support'is in said work presenting position,a second gage member arranged to become operative in connection with the first-mentioned gage member as the work support moves to work presenting position with respect to said tool, a connection between the first-mentioned gage member and the work support, and means operated by the second-mentioned gage member to adjust the said connection whereby the work support is adjusted in its tions with respect tOSfiid tool, a gage member movable with the work support and having'a' normally fixed spacing withrespect to said'tool when the work supportis in said work presenting position, a second gage member pivotally mounted with respect to said work support and arranged to become operative in connection withthe first mentioned gage memberto gage the work as the work support moves to work presenting-position with respect to said'tool, a pivotal connection between the first-mentioned gage member and the work support, and means operated by second-mentioned gage member to adjust pivotal connection whereby the worksupportfis adjusted with respect to said tool.

17. In a machine for operating-upon hides}.

tion to the movements of the work support tolock the work support in its adjustedrelation' to said tool.

18. In a machine for operating upon "hides,

skins, and pieces of leath'erfa tool for operating on a piece of work, a work support movable be tween work receiving and work presenting positions with respect to said tool, a gage-member movable with the work support, asecond gage member pivotally mounted on thework support, connections between the gage members and the work support to adjust the latter with respect to said tool, and'a pawl and ratchet mechanism arranged to lock the work supportin its ad-- justed relation to said tool. j

19. In a machine for operating upon hides, skins, and pieces of leather, a bladed cylinder,-

a bed roll movable between work'receiving and work presenting positions with respect to said cylinder, a gage member mounted to move with" the bed roll, 'a second gage member mounted to move toward and from the first-'mentioned gage member, an adjustable connection between the first-mentioned gage member and the bed roll arranged to be operated by the second-mentioned gage member to adjust the bed "roll; to the' cylinder, means for locking the bed roll in its'adjusted position, and means operated in timed relation tothe recited movements of the bed rollto render said locking means alternately operative and inoperative. I I

20. In a machine for operating upon hides, skins, and pieces of leather, a tool, for operating on a piece of work, a work support movable between work receiving and work presenting posi tions with respect to said tool, a gage member movable with the work support, a second gage memberv pivotally mounted. on'thelwork support, connections between the gage members work support to adjust'thelatter with respect to' said tool, a pawl'and ratchet mechanism arranged to lock the work support in its adjusted relation to said tool, and a cam wheel operated in timed relation to the movements of the support to cause locking and unlockingoi' the ratchet wheel by said pawl;

21. In a machine for operating upon hides,

skins, and pieces of leather, a-bl'aded cylinden a bed roll movable between work receiving and work presentingpositions' with respect ito said cylinder, a gage member mounted to move with the bed roll, a second gage member mounted to move toward and from the first-mentioned gage member, an adjustable connection between the first-mentioned gage member and the bed roll arranged to be operated by the second-mentioned gage member to adjust the bed roll to the cylin-- der, means for locking the bed roll in its adjusted position, and a pin-wheel movable with the bed roll and arranged to be operated in timed relation to the swinging movements of the bed roll and arranged to operate the locking means to render the latter alternately operative and inoperative.

22. In a machine for operating upon hides, skins, and pieces of leather, a bladed cylinder, a bed roll, swing arms for supporting the bed roll and moving the latter between work receiving and work presenting positions with respect to the bladed cylinder, a shaft for supporting said swing arms, a gage member secured to and movable with said bed roll, a connection between said gage member and the bed roll adjustable to vary the positions of the gage member and bed roll relative to each other, a second gage member mountedon said shaft and operative to adjust said connection, means for locking the bed roll and firstmentioned gage member in adjusted position, means connected to said first-mentioned gage member to cause swinging of the bed roll toward and from said cylinder, means to lock the firstmentioned gage member and the bed roll in adjusted position with respect to each other, and means carried by the swing arms to operate the locking means to render the latter alternately operative and inoperative.

23; In a machine for operating upon hides,

skins, and pieces of leather, a bladed cylinder,

a bed roll, swing arms for supporting the bed roll and moving the latter between work receiving and work presenting positions with respect to the bladed cylinder, a shaft for supporting said swing arms, a gage member secured to and movable with said bed roll, a connection between said gage member and the bed roll adjustable to vary the positions of the gage member and bed roll relative to each other, a second gage member mounted on said shaft and operative to adjust said connection, means for locking the bed roll and first-mentioned gage member'in adjusted position, means connected to said first-mentioned gage member to cause swinging of the bed roll toward and from said cylinder, means to lock the first-mentioned gage member and the bed rollin adjusted position with respect to each other, and a pinwheel carried by one of the swing arms and arranged to be operated in timed relation to the swinging movements of the bed roll to efiect alternately locking and unlocking of said locking means.

24. In a machine for operating upon hides, skins, and pieces of leather, a bladed cylinder, a bed roll movable between work receiving and work presenting positions with respect to said cylinder, swing arms for supporting and moving the bed roll, a shaft upon which the swing arms are mounted, a gage member pivotally mounted upon said shaft, a connection between said gage member and the swing arms of the bed roll, a second gage member arranged to adjust said connections in accordance with the thickness of the work between said gage members, means connected to the first-mentioned gage member for causing swinging movements of said bed roll swing arms, means to lock the bed roll and the firstmentioned gage member in their adjusted positions, and a pin-wheel arranged to be operated tween work receiving and work presenting positions with respect to said tool, a gage member movable with the work support, a second gage member arranged to be held against movement with the work support, the gage members becoming operative to gage the work as the work support moves toward work presenting position with respect to said tool, connections between the gage members and the work support to adjust the latter with respect to said tool, and indicating means arranged to be operated by said connections while in their adjusted position, whereby the result of the gaging operation is indicated to the operator.

26. In a machine for operating upon hides, skins, and pieces of leather, a tool for operating on a piece of Work, a. work support movable between work receiving and work presenting positions with respect to said tool, a gage member movable with the work support, a second gage member arranged to become operativein connection with the first-mentioned gage member as the work support moves to work presenting position with respect to said tool, a connection between the first-mentioned gage member and the work support, means operated .by the secondmentioned gage member to adjust the said connection whereby the work support is adjusted with respect to said tool, indicating means, and a member connected to the indicating means and arranged to be operated by said connection as the work support approacheswork presenting position with respect to said tool, whereby the indicating means is rendered responsive to the gaging oper-

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