US2109739A

US2109739A - Skin, hide and leather working machine

Info

Publication number: US2109739A
Application number: US156709A
Authority: US
Inventors: Wayland Frank
Original assignee: Individual
Current assignee: Individual
Priority date: 1937-07-31
Filing date: 1937-07-31
Publication date: 1938-03-01
Anticipated expiration: 1955-03-01

Description

March 1, 1938. F. WAYLAND SKIN, HIDE AND LEATHER WORKING MACHINE Filed July 51, 1937 3 Sheets-Sheet 1 mm n 3 Sheets-Sheet 2 l mid- Eur March 1, 1938. F. WAYLAND SKIN, HIDE AND LEATl iER WORKING MACHINE Filed July 51, 1951 Fig.2.

March 1, 1938.

F. WAYLAND sKIN, HIDE AND LEATHER WORKING MACHINE Filed July 31, 1937 3 Sheets-Sheet 3 a ./l/ J D w I I, 7 1.. /I/, 1 u a J I? W .Wn v UV,

, fwd

l m? E a a stretch-of the belt 2|.

Patented Mar. 1, 1938 SKIN, 1mm AND LEATHER WORKING MACHINE Frank Wayland, Camden. N. .1.

Application July 31, 1937, Serial No. 156,709

7 Claims.

This invention relates to machines for putting out, staking, fieshing and unhairing skins, hides and leather and consists in certain improvements upon the machines of this class which are illustrated and described in my U. S. Letters Patent Nos. 1,077,207; 1,090,895; 1,131,756 and 1,204,914.

In the accompanying drawings which illustrate one embodiment of the invention,

Figure 1 is a front elevation of a machine embodying the invention.

Figure 2 is a side elevation, partly in section, of the machine shown in Fig. 1.

Figure 3 is a section on line 3'-3 of Fig. 1.

Figure 4 is a detail hereinafter described.

The illustrated embodiment of the invention comprises a pair of coact i ng feed rolls Hi and II arranged between a pair of spaced apart uprights i2, i2 fixedly mounted upon a base l3, said uprights and base forming the main frame of the machine. Also disposed between the uprights l2, l2 just below the feed rolls is a pair of bladed work-rolls l4 and I5 which are constructed and cooperate with one another as shown and described in my Patents Nos. 1,077,207 and 1,204,914 but which co-act with the feed rolls l0 and II in the novel fashion presently tobe described.

The rear feed roll is fast on a shaft l6 journaled in bearings on uprights l2, l2 and on one end of this shaft is fixed a finder gear H as shown in Fig. 2, while on the opposite end thereof are mounted three pulleys l8, I9 and 20 disposed side-by-side as'shown in Fig. 1, the intermediate pulley i9 being fast on shaft l6 and the two endmost pulleys l8 and 20 being loosely mounted thereon. Co-operatively associated with pulleys i9 and 20 is a straight driving belt 2| and cooperatively associated with pulleys l8 and I9 is a crossed driving belt 22. The portions of these belts which engage the pulleys are continously driven in opposite directions as indicated by the arrows in Fig. 1 and are spaced apart a distance slightly greater than the width of the intermediate pulley I9.

Slidably mounted in bearings provided at the tops of the uprights l2, l2 of the frame is a manually operated shipper member 23 in the'form of a transversely disposed endwise movable slidebar carrying a pair of laterally extending arms 24 which embrace a stretch of the belt 22 and also a pair of laterally extending arms 25 which embrace It will thus be clear that the shipper member 23 can be adjusted endwise so as to place belt 2| on tight pulley I9 and belt 22 on loose pulley l8 to drive shaft IS in one direction as shown in Fig. 1; so as to place belt 2|. on

loose pulley 20 and belt 22 onyloose pulley 18 to stop the rotation of shaft l8, or so as to place the belt 22 on tight pulley l2 and belt 2| on loose pulley 20 to driv'e'shaft It in the opposite direction, all at the will of the operator. Stop pins 26 carried bythe shipper member engage the up-, rights l2, l2 to limit the endwise movement of said member in each direction.

The rear work roll I is fixed on a shaft 21 supported, as usual, in'journal boxes adiustably mounted on theuprights l2, l2. This shaft has fixed on it a pulley 22, Figs. 1 and 2, that is con? a belt indi ated by broken lines at 22.

The front work roll I! is fast on a shaft 30 journaled near its opposite ends in bearings .provided on a pair of swinging arms 2|, 2|, pivotally supported at their lower ends by a rock shaft 32 journaled in bearings on the uprights I2, l2. Each swinging arm Ills connected by a pitman 23 with an eccentric 24 fast on a shaft 25.

The shaft 21 of the rear work roll has fast on it agear 26 operating through the usual intermediate gears 21 to drive a gear 22 faston the shaft 30 of the front work roll l5. V

The shaft 25 has loosely mounted on it a gear 39 that is continuously driven by a pinion 40 fast on a shaft 4|. This shaft also has fixed on it a pulley 42 that is continuously driven by a belt, the latter being indicated by dotted lines at 43 in Fig.1.

The front feed roll H is fast on a shaft 44 which is mounted as usual; upon the upper ends of the swinging arms 2| and at one end thereof said shaft has fixed on it a finder gear 45 to co operate with the finder gear II on the shaft ii of the rear feed roll.

When the swinging feed roll frame or carrier comprising the arm's 3| and rock shaft :2 00011- I pies the full line position shown in the drawings the gears H and 4 5 are in mesh and if either belt 2| or 22 is on the tight pulley I! the two feed rolls are rotated in unison, in the directions indicated by the arrows in Fig. 3 if belt 2| is on the tight pulley and inopposite directions if the belt 22 is on said pulley.

When the swinging frame or carrier 3|-22 occupies the position indicated by broken lines in Fig. 3 the gear is out of mesh with the gear l1 erate with a clutch-operating member 56 that is pivotally mounted at 5i on the adjacent upright If. This member 58 is in the form of a bell-crank lever whereof one-arm normally rests by gravity upon the clutch member, in the path of the

studs

48 and 46 and is formed wlth a cam surface and stop shoulder to cooperate in the usual manner with said studs.

The other arm of the clutch operating member 56 is co-operatively associated with one arm of a bell-crank lever 52 fulcrumed at 53 on the adjacent upright l2. At its front free end the horizontal arm of the lever 52' is connected with one end of a horizontal cross-bar 54 whose opposite end is connected with the front free end of a horizontal arm 55 whose rear end is pivotally mounted at 56 on the other upright l2. The two pivots or

fulcrums

56 and 53 are axially aligned. As will be clear, the lever 52, cross-bar 54 and arm 55 make up a foot-operated treadle through which the operator controls the clutchoperating member 58 and clutch member 46. A spring 51 normally holds this treadle elevated against the hubs of the swinging arms 3| but when depressed by the operator the treadle acts to swing member 50 out of engagement with clutch member 46 whereupon spring 41 shifts the latter into engagement with the clutch member on gear 38 with the result that said shaft is retated and will continue to be rotated so long as the treadle is held down by the operator.

When the operator releases the treadle the latter is restored to its normal position by spring 51 which permits member 50 to fall on to clutch member 46 in front of 'an approaching

stud

48 or 49. When the stud reaches the member 50 it rides against the cam portion thereof and the latter acts through the stud to disengage clutch member 46 from gear 39 thereby stopping the rotation of shaft and eccentrics 34.

The

studs

48 and 49 are positioned relatively to the eccentrics so that the swinging carrier 3I82 can be stopped and held either at the limit of its movement toward the rear work roll i4 or at the limit of its movement away from said roll and with the above described feed roll mechanism it is possible to introduce the skin, hide or leather into the machine while said carrier occupies either of said two extreme positions. Heretofore the feed rolls of machines of this swinging frame or carrier type have always been rotated only in the directions indicated by the arrows in Fig. 3 and no provision has ever been made for reversing their direction of rotation or for driving them in the opposite direction so as to feed the'material into the machine. Nor has it been possible heretofore to introduce, operate upon and remove the skin, hide or leather while the swinging frame or carrier 3l--32 oc-.,

cupied its closed position shown by full lines in Fig. 3.

Fixedly attached to the upper ends of the arms 8| is a 'table 58 upon which the skin, hide, leather or the like, X is placed, flattened out and slid forward to and between the feed rolls l5 and ll while the carrier or swinging frame "-82 occupies either its open or its closed position;

It will be clear that at any time during the operation of the machine the material X can be quickly released and the action of the rolls thereon'terminated by depression of the treadle 52- 54-56 which results in movement of carrier 8i-32 from the full line position of Fig. 3 to the position indicated by dotted lines. Also, that a second depression of the treadle restores the carrier 3l-82 to the full line position again.

Therefore, in operating the present machine to stake dry or semi-dry leather the latter may be fed into the machine to a predetermined or desired extent with the swinging frame on carrier 8l-42 in closed position and then the removal of the leather may be effected by opening movement of said swinging frame. This mode of operation avoids the formation of wrinkles in the leather.

Directly below the work rolls l4 and I5, I pro-' vide a pair of stretching'and tensioning rolls 5! and 56, the former having a covering 58 of resilient rubber and the latter being constructed with spiral metallic blades as shown in Figs. 1 and 3. Like the blades of the work roll l5 the blades of roll 58 are made in right and left hand directions as shown in Fig. 1, said right and left hand blades meeting at the vertical median plane of the machine.

The roll 51 is provided at its opposite ends with trunnions 66 journaled in bearings provided on the uprights I! of the main frame while trunnions 68 provided at the opposite ends of the front roll 58 are journaled in bearings provided on the swinging arms 3i.

These two rolls 51 and 58 are adapted to engage opposite sides of the skin, hide or leather X as the latter is moved up and down by the feed rolls l6 and H and while the work rolls I4 and 15 are operating upon the opposite sides of the same. It will thus be clear that the portion of the skin, hide or leather between the rolls 51 and 58 of the feed rolls iii-ll is maintained under longitudinal tension while being operated upon by the work rolls l4 and i5.

The front bladed roll 58 carries a sprocket wheel 6| connected by a sprocket chain 62 with a sprocket wheel 63 fast on the shaft 36 of the front work roll i5 so that said frontroll 58 is continuously driven in the direction of the arrow, Fig. 3. The rear roll 51 is connected with and driven by the shaft 21 of the rear work roll i4 through similar mechanism including the sprocket chain 64 shown in Fig. 3. Thus the two lower rolls 51 and 58 are continuously driven in the directions indicated by the arrows in Fig. 3 and their peripheral speeds are no less, and preferably somewhat greater than, the peripheral speeds of the work rolls l4 and I5.

Thus during the operation of the machine the lower stretch of the skin, hide or leather between the work rolls l4l5 and the lower rolls 51-58 is maintained stretched taut longitudinally and also, through the action of the spiral blades of roll 58 said lower portion of the skin, hide or leather is stretched laterally in opposite directions from the middle of the machine. In this way the lower portion of the work is maintained perfectly flat and stretched in all directions at all times but particularly during the upward movement of the work while said lower portion of the latter is approaching and passing between the work rolls i4 and II.

The above described machine is of simple and eflicient construction and has the advantage that What I claim is:

' above described.

it not only can be operated as machines of this class have heretofore been used but may be controlled so as to have the new mode of operation In putting out wet skins the leather or hide is introduced between the rolls while the swinging frame or carrier occupies its open position,

and then after closing the frame or carrier the leather is fed downwardly as far as possible by the feed rolls whereupon the direction of rotation of the feed rolls is reversed to bring the leather or hide back up again and the foot treadle is then operated to open the feed rolls and free the same. 4,

Y 1. In amachine of the character described, the combination of a pair of opposed spirally bladed work rolls for simultaneously engaging the opposite sides of the sheet material that is operated upon; means for continuously rotating said rolls to cause the same to scrape said material and also to stretch the same longitudinally and transversely; a pair of opposed feed rolls disposed above and adjacent to said work rolls so as to co-act with the latter in stretching the material longitudinally; a main frame on which one roll of each of said two pairs is journaled; a swinging carrier frame pivotally supported by said main frame and on which'the other rolls of said two pairs or rolls are rotatably mounted; mecha-.

nism for driving said feed rolls to feed the material into the machine toward and between said work rolls at a slower speed than the peripheral speed of said work rolls, and mechanism for swinging said carrier frame in a direction to re-. lease the material from both pairs of rolls when said material has been fed into the machine a predetermined distance.

2. In a machine of the character described, the combination of a pair of opposed spirally bladed work rolls for simultaneously engaging the opposite sides of the sheet material that is operated upon; means for continuously rotating said rolls to cause the same to scrape said material and also to stretch the same longitudinally and transversely; a pair of opposed feed rolls disposed above and adjacent to said work rolls so as to coact with the latter in stretching the material longitudinally; mechanism for driving said feed rolls to effect movement of the material toward and between said work rolls; mechanism for driving said feed rolls to effect movement of the material between said work rolls in the opposite direction; means for selectively controlling said two driving mechanisms to render either effective to the exclusion of the other; a stationary main frame on which one roll of each of said two pairs of rolls is journaled; a swinging carrier frame pivotally supported by said main frame and on which the other rolls of said two pairs of rolls are rotatably mounted; manually controlled means for swinging said carrier frame to shift the rolls carried thereby into and out of cooperative relationship with the other rolls of the machine and for holding said swinging carrier stationary while at the limit of its movement in each direction.

3. In a machine of the character described the combination of a pair of opposed bladed work rolls for simultaneously engaging the opposite sides of the sheet material that is operated upon;

1y; mechanism for driving said feed rolls to effect movement of the material toward and between said work rolls; mechanism for driving said feed rolls to efliect movement of the material between said work rolls in the opposite direction: means for selectively controlling said two driving mechanisms to render either efiective to the exclusion of the other; a pair of opposed tensioning rolls disposed below said work rolls so as to engage the opposite sides of that portion of the sheet material extending below the latter, and means for rotating said tensioning rolls in directions opposed to the upward movement of the sheet material.

4. A machine of the character described constructed in accordance with claim 3 and wherein there is provided a main frame on which one roll of each of said three pairs of rolls is journalled; a swinging support for the other rolls of said three pairs; manually controlled means for swinging said support to shift the rolls carried thereby into and out of co-operative relationship with the other rolls of the machine, and for holding said support at the limit of its movement in each direction.

5. A machine of the character described constructed in accordance with claim 3 wherein one of said tensioning rolls is made with right hand and left hand spiral blades to co-operate with the opposite tensioning roll to stretch the sheet material laterally in opposite-directions from its middle.

6. A machine of the character described consioning rolls being made with opposed spiral, blades for stretching the'material laterally in opposite directions from its middle.

7. In a machine of the character described the combination with a pair of opposed bladed work rolls for simultaneously engaging the opposite sides ofthe sheet material that is operated upon and means for continuously rotating said rolls to cause the same to scrape said material and also to stretch the same longitudinally and transversely, of a pair of opposed feed rolls disposed above and adjacent to said work rolls so as to co-act with the latter in stretching the material longitudinally; mechanism for driving one of said feed rolls to effect movement of the material between said work rolls in one direction; mechanism for driving one of said feed rolls to effect movement of the material between said.

nisms to render either eflective to the exclusion of the other; a pair of tensioning rolls disposed below said work rolls; means for continuously rotating said tensioning rolls; a swinging frame on which one of said feed rolls, one of said work rolls and one of said tensioning' rolls are mounted, and means controlled by the operator for shifting said swinging support to move the three rolls carried thereby into and out of operative positions, one of said tensioning rolls being made with opposed spiral blades for stretching the material laterally in opposite directions from its middle as said material is moved up and down 5 between said work rolls.

- FRANK WAYLAND.