US1860713A - Leather working machinery - Google Patents

Description

May 31, 1932. s, JONES 1,860,713

" LEATHER WORKING MACHINERY Filed May 27, 1922 4 Shets-Sheet 1 [/7 Ver) t of, F rank 5. Jones.

2; M4Qzzz May 31, 1932. F. s. JONES 1,860,713

LEATHER WORKING MACHINERY Filed May 27. 1922 4 Sheets-Sheet 2 7 1n wen ton Frank .5 Jones.

May 31, I932. F s. JONES 4 1,350,713

LEATHER WORKING MACHINERY Filed May 27. 1922 4 Sheets-Sheet 5 I [/7 Vendor, Frank 5. Jones.

05 2461-, orngg.

III

II II May 31, 1932. F. s. JONES LEATHER WORKING MACHINERY 4 2 t an n w z y w a w w W M an 4. m 4 ,0 F w a f 5% Filed M'ay 2'7, 1922 in United States Letters Patent No. 78%,017, granted Feb. 28, 1905,.upn application of.

Patented May 31, 1932 unirsn stares PATENT OFFH'CE FRANK S. JONES, 0F LYNN, MASSACHUSETTS, A SSIGNQR T0 TURNER TANNING MACHINERY COMPANY, OF PORTLAND, MAINE, A COB?OEATION OF IlTAINE LEATHER 'wonxlns MACHINERY Application filed May 27, 1922. Serial No. 564,171.

This invention relates to machines for .op-

that the invention and various important features thereof may have other applications and uses. 7

In unhairing machines of the type disclosed N. B. Turner, a number of work supports are employed in presentingpieces of work for unhairing to a plurality of sets of bladed piece of work is returned to its initial position so that the operator can remove it from its tableand substitute a freshpiece of work therefor. It is to be noted that this machine is operative completely to unhaira hideor skin in one passage through the machine. However, the machine is expensive to build and to maintain in proper operating condition. It is clear, therefore, that for many tanneries a smaller and lessexpensive machine would be more desirable.

Accordingly, it is an object of the invention to provide a simple and inexpensive machine of the drum or roll type for treating hides, skins, and other pieces of work and completing the treatment of the whole piece of work at one operation in an effective manner, the piece of work being" returned to the operator without any necessity on his part of exercising control of the machine to secure such return of the work.

To these ends, and in accordance with an important feature of the invention, means is provided in the illustrated construction for holding a piece of work. against the cylindrical surface of a rotary drum while other} means is operating on the entire surfaceof the work not 1n contact wlth the drum while the latter, in its rotation, carries the Work cylinders, and following the operation the of the treatingtools whichoperate continuously upon thework as the latter is presented by the continuously rotating drum. 7

Preferably and" as shown, the, supporting orholdin belts are arranged in sets, the belts ofone setfigeing arranged in side-by-side overlapping relation to the belts of another set,

thus leaving spaces between the belts. of each set in which the treating. tools mayoperate. In order that all portions of the surface of the work not in contact with the drum may be op erated upon in spite of the fact that the supporting belts are disposed in spaced relation toeach other over the surface to be treated, a

plurality of bladed cylinders are employed with the blades of one cylinder in staggered relation'to the blades of another cylinder, so that the blades of one cylinder operate in spaces between one set of belts while the blades of theother cylinder operate in spaces between another set; of belts in staggered relation to the first-mentioned set of belts.

In order to maintain the-belts at proper tension while at the same time accommodatmounted so asto press the belts yieldins lv against the surface of the drum. To assist in guiding the pieces of work in their travel around the drum, guide members may be employed positioned in predetermined spaced relation to the surface of the drum, another guide member being provided near the front of the machine and in predetermined relation I to the drum to serve as a stripper by which I the worki's removed from the drum and de and novel combinations of parts will now be d-escribe'd'in detail with reference to the accompanying drawings and then pointed e: I

more particularly in the appended claims.

i In the drawings Figure 1 is a side elevation of the machine showing the driving mechanism.

Figure 2 is a front elevation of the same.

Figure 3 is a plan View.

Figure 4 is a transverse section showing the 7 operating mechanism;

Figure 5 1s a rear elevation.

Figures 6 and 7 are detail views showing the movable bearings.

Figures 8 and 9 are detail views of the adjustable rigid bearings.

Figures 10, 11, and 12, are diagrammatic views of the feeding belts disclosed in Fig. 4. Figure 13 is an alternative construction showing a single blade. Referring to the drawings, 10 and 11 indicate side frames of the machine which are.

held rigidly together as a unit by rods 12, 13, 14, and 15. held between two adjustable clamping nuts threaded on rods 12, 13, 14, and 15 for adjusting the frame to the supported members. Mounted in the side frames 10 and 11, is a main driving shaft 16 which rotates in rigid bearings 17, Figure 3. Fixed upon'shaft 16 V is a master drum18, around which the various operations of the machine take place. The periphery of the drum 18 is covered with a rubber matting 19, although any suitable material may be utilized which is flexible in its nature for aworking and an operating surface. The shaft 16 is provided with tightand loose pulleys 20 and 21 although it may receive its power from any suitable source. Mounted on the shaft 16 and rotating with it is a driving gear 22 which meshes with driven cap is a boss 31 in which is threaded an adjustable bolt 32. The bolt 32 is free to turn in a loose connection 33 which allows the turning movement of the bolt 32 toimpart radial movement of the box bearing 27 in relation tothe drum 18. There are two sets of these bearings in eachside frame 10 and, 11 respectively. Mounted on the shaft 25 are blade cylinders 34, 35, 36, 37, 38, and 39, hav ing a considerable clearance space between them for facilitating'the operation of the machine, the description of which will be taken up hereinafter. Mounted on the shaft 26 are blade cylinders 40, 41, 42, 43, and 44' in line and overlapping the spaces between the cylinder blades 34, 35, 36, 37, 38, and 39 The side frames 10 and 11 are eration may be provided. The skin or hide V A may be fed over a table 45, although the table is not absolutely necessary. The. skin' or hide passes between the master drum 18 and a first set of feed rolls 46 and 47 (shown in Figure 4) and idling roll 48, the latter compensating for the flexibility of the belts. Mounted on the rolls 46, 47, and 48 are belts 49, 50, 51, 52, and 53 (Figs. 3, 4 and 11). Operating between these belts is an intermediate set ofbelts 54, 55, 56, 57, 58, and 59 v(Figs. 3, 4. and 10) which practically feed the skin or hide half way around the drum and are mounted on the first mentioned rolls 46 and 48, and extend across and under the drum 18 to the roll 60 which completes half of the feeding operation. I

The belts 49 to 53, inclusive, Figure 3, be-

ing laterally located between the belts 54 to 59, inclusive, Figure 3,allow the whole skin or hide-to be fed in-and straightened out as it passes underthe drum 18 to the lower cutting blades mounted on. the blade cylinder to 44, inclusive. The hide then passes upwardly under the blades on the blade cylinder 34 to 39, inclusive, it being the latter half of the feeding operation. As the hide or skin 7 leaves thejroll 60, it passes to a thirdset of belts 61, 62, 63, 64, and 65. mounted on the rolls 60, 66, and 67, (Figs. 3,

These belts 4 and 12) complete the feeding operation. The feed rolls or drums 46, 47, and 66 have grooves in which the (Re-operating belts are received, the grooves beingof the width of the belts to be received therein. and of a depth to correspond closely to the thickness of the belts. Hence the annular portions of the rolls 46, 47, 60 and 66 between the belts 4 will also engage the hide or skin on themaster drum 18 and assist in the feedinglthereof. It is to be noted also that roll 47 is more deeply grooved at regular intervals to permit passage of belts 54, 55, 56, 57, 58 and 59 in straight line runs between rolls 48 and 60, as indicated in Fig. 4 in connection with belt 59. From an inspection of this latter figure of the drawings it will appear that feed roll 46 has the function of a startingfeed roll andmay before, are mounted on adjustable bearings 27 to allow the blade to be regulated in proper relation to the skin or hide resting on the drum. It is well known that hides or skins are of varying thickness so that it becomes necessary to adjust the blades to suit the cutting of flesh or the removing of hair, and it is by this adjustment that the blade can be regulated to suit the conditions required, and at the same time remain rigid under the cutting operation.

The large rolls 46, 60, 47, and 66, are provided with bearings which are movable and spring pressed so as to force the said rolls firmly but yieldingly against the master drum 18. The bearing consists of a box 67 (Fig. 6) which is free to slide radially in the guides 68 and 69. The guides 68 and 69 are provided with a cap 70 in which the bolt 71 is threaded. to the loose connection 72, which allows the bolt- 71 to turn and impart a radial movement to the box 6'7. 'Located between the cap 7 0 and the head of the bolt 71 is a spring 7 3. By increasing or decreasing the tension on the spring 73, the rolls 46, 47 60 and 66 will adapt themselves to the varying thickness of hides or skins in their path around the drum during the flashing or unhairing operation.

The smaller rolls 48 and 67 are tension devices for retaining the belts in position and taking up the slack caused by the skins passing between the master drum 18 and the rolls 46, 4'7, 60, and 66. They also compensate for the stretching of the belts and at all times render the belts in proper condition for operation. The shafts supporting the rolls 48 and 67 are mounted in box 79 (Fig. 9) which is supported in guides 7 4 and 7 5 formed integral with the side frames 10 and 11. Secured to the guides 74 and 75 is a cap 77 in which the bolt 78 is threaded. One end of the bolt 7 8 is secured rotatably in the boss formed on the box 79. Interadjacent to the head of the bolt 78 and cap 77 is a spring 80 which pulls in the direction to continual- 67 serve as tighteners to retain the said bolts 78 outwardly, and hence also as tighten-ers to retain the said belts in proper relation to the working operation.

Pivotally secured to the side frame is a guide 81 4) to prevent the hides or skins from being destroyed or from turning over due to the movement of the blades in their path over the drum. Thepivotal mounting allows the guide 81 to rock under the varying condition of the skin or hide and compensates for any varying condition which may arise.

Secured to the side frames 10 and 11 is a guide 87 (Fig. 4) set close to the master drum 18, which causes the hide or skin to move away from the rotating drum and drop off when the operation is completed.

Although we have shown the advantage of One end of the bolt is secured a system of feeding hides or skins in connection with two sets of blades, it is to be understood that the system of feeding can be used with a single set of blades as shown in modified view in Figure 13. The feed rollsany belts, and are used with guiding members 84 and 85. These guiding members pre vent the hide or skin from dropping down or wrapping around the feeding cylinders as the said skin or hide passes around the master drum in the fleshing or unhairing operation.

In operation, a raw hide. or skin A is placed on the table and fed over the roll 46 between the two sets of belts 49 to 53 inclusive and54 to 59 inclusive. As the skin or hide passes over the belts it is straightened out and brought into a smooth and flat relation to the masterdrum 18 and then it passes over the roll 47, immediately after which the first cutting or unhairing operation takes place, and this is practically one-half of the'entire cutting or unhairing operation. After'this first operation, the skin or hide passes under the rolls and 66, during which the blades on the shaft 25 cut or clean the unfinished surfaces which were left by the preceding my invention; but I- desire to have it under stood that the apparatus shown is only illustrative, and that various changes may be made within the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent of the United States is:

1. In a leather working machine means for unhairing hides or skins comprising a plurality of blades, a feed drum, means for continuously feeding the hide or skin around the drum to the starting position during the unhairing operation, and means for operating the blades to effect unhairing operations upon every part of the hair-bearing surface of said hides and skins. V

2. In a leather working machine, means for unhairing hides or skins, a feed drum, and feed belts co-operating with the drum for continuously feeding the hide or skin around the drum to the starting position during the unhairing operation.

3. In a leather working machine for unhairing hides or skins, a feed drum, feed belts co-operating with the drum for continuously feeding the hides or skins around the drum to the starting position, and knives arranged to Work in proper relation to the feed belts for unhairing the hides or skins.

a. In a leather Working machine for unhairing hides or skins, a feed drum, feed belts co-operating with the drum for continuously feeding the hides or skins around the drum to the starting position, knives arrangedto vvork in proper relation to the feed belts for unhairing the hides or skins, and holding members for supporting the knives and moa able to cause the knives to operate on the hides or skins.

5. In leather working machine for unhairing hides or skins, a frame, a master feet drum rotatable in the frame, bearings in the frame, feed drums in the bearings, feed belts on the feed drums co-operating with the mas- '20 ter drum for continuously feeding the hides or skins around the master drum to the starting position, knives arranged to work in proper relation to the feed belts for imhairing the hides or skins, and members spaced from each other distances corresponding to Widths of the feed belts'and movable. to cause the knives to operate on the hides or skins.

6. In a leather Working" machine for unhairing hides or skins, a frame, a master feed "drum rotatable in the frame, hearings in the frame, feed drums in the bearings, feed belts on the feed drums co-operating With the master drum for continuously feeding the hides or skins, knives arranged to WOlk in proper relation to the feed belts for unhairing the hides or skins, and means additional to the belts for guiding the said hides or skins in their path around the master drum. 7. In a leather Working machine for un- "hairing hides or skins, a frame, a master feed drum rotatable in the frame, bearings in the frame, feed drums in the bearings, feed belts on the feed drums co-operating With the master drum for continuously feeding the hides or skins, knives arranged to Work in proper relation to the feed belt-s for unhairing the hides or skins, and a guide member secured to the frame and in proper relation to the feed drums for guiding the said hides or 59 skins in their path around the master drum.

8. In a leather Working machine for unhairing hides or skins, a frame, a master feed drum rotatable in the frame, bearings in the frame, feed drums in the bearings, feed belts on the feed drums co-operating With the master drum for continuously feeding the hides or skins, knives arranged to Work in proper relation to the feed belts for unhairsing the hides or skins, and rotary members for supporting the knives and for causing them to operate on the hide or skin.

9. In a leather Working machine for unhairing hides or skins, a frame, a master feed m drum rotatable in the frame, bearings in the fa frame, feed drums in the bearings, feed belts on the feed drums co-operating With the master drums for continuously feeding the hides or skins, knives Working in proper relation to the feed belts for unhairing the hides or skins, and means for operating the knives in the spaces between the feed belts.

10. In a leather Working machine for unhairing hides or skins, aframe, a master feed drum rotatable in the frame, bearings in the frame, feed drums in the bearings, feed belts on the feed drums co-operating With the master drum for continuously feeding the hides or skins, knives Working in proper relation to the feed belts for unhairing the hides or skins, cylinders spaced from each other distances corresponding to widths of the feed belts and serving as supports for the knives, and means for rotating the master drum and the knife cylinders. 7

11. In a leather Working machine for unhairing hides or skins, a frame, a master feed drum rotatable in the frame, bearings in the 7 frame, feed drums in the bearings, feed belts on the feed drums co-operating with the master drum for continuously feeding the hides or skins, knives Working in proper.

relation to the feed belts for unhairing the hides or skins, cylinders upon Which the knives are secured, a gear secured to the master drum, and a gear secured to the cylinders which hold the knives, for rotating the said master drum and the knives.

12. In a leather Working machine for unhairing hides or skins, a frame, a master feed drum rotatable in the frame, bearings in the frame, feed drums in the bearings, feed belts on the feed drums co-operating With the master drum for continuously feeding the hides or skins, and knives Working in proper relation to the feed belts for, unhairingthe hides or skins, some of the feed drums having grooves for receiving said belts and having annular portions spaced by said grooves for engaging With the hide or skin to press it against the master drum to assist in the feeding of the hide or skin. I

13. In a leather Working machine for unhairing hides or skins, a frame, a master feed drum rotatable in the frame, bearings in the frame, feed drums in the bearings, feed belts on the feed drums co-operating With the master drums for continuously feeding the hides or skins, and knives Working in-proper relation to the feed belts for unhairing the hides or skins, said feed drums having portions for engaging With the hide or skin to ferent s s of two of the th ee f ed ro ls for forming a continual feed for the hides or skins, and me ns. un airing he h d s or skins.

15. In aileather wo k ng machin for unhairing hides or skins, a frame, a master hairinghides or skins, a frame, a master drum rotatably mounted in the frame, a starting feed roll, an intermediate feed roll and "a delivery feed roll mounted in the frame, two sets of feed belts extending par tially around the master drum and ITQISP-f G- tively from the starting and delivery roll to the intermediate roll which is practically covered by the two sets of belts, and two sets of knives, one below and one above the intermediate roll for unhairing the hides or skins between the feed belts.

17. In a leather working machine for unhairing hides or skins, a frame, a master drum rotatably mounted in the frame, a starting feed roll, a tension feed roll, an intermediate feed roll and a delivery feed roll mounted in the frame, two sets of feed belts extending partially around the master drum and one set of feed belts extending from the starting feed roll and the other set from the delivery feed roll both to the intermediate roll which is practically covered by the two sets of belts, two sets of knives, one below and one above the intermediate roll for unhairing the hides or skins between the feed belts and a set of feed belts on the starting roll and acting against the master drum and also extending around the tension feed roll to keep the hide or skin smooth and even as it enters the ma chine.

18. In a leather working machine for unhairing hides or skins, a frame, a master drum rotatably mounted in the frame, a starting feed roll, an intermediate feed roll and a delivery feed roll mounted in the frame, two sets of feed belts extending partially around the master drum and one set of feed belts extending from the starting feed roll and the other set from the delivery feed roll both to the intermediate roll which is practically covered by the two sets of belts, two sets of knives, one below and one above the intermediate roll for unhairing the hides or skins between the feed belts, and means for holding the belts tightly against the feed rolls and master drum.

19. In a leather working machine for unhairing hides or skins, a frame, a master belts extending from the starting feed roll and he o her s t from he del ve y fe d r011 b th t he n me iate r l h h p t oally co ered ythetwo sets of b lts, an

wo s ts of knives fo unhair ng th h d or sk ns between the feed belts, the knives of one set being in staggered relation to the kn ves of the otherset to work in between the belts of the two sets. I

20. In a leather working machine, a master feed drum, feed belts co-op'erating with the master drum for continuously feed-* ing a hideor skin around the master drum to the start ng positlon, and means working in spaced relation to the feed belts forunha-iring the hide or skin. I I In a leather working machine, a frame, means forunhairing hides or skins, a master feed drum rotatable in the frame, and means for feeding hides or skins under he mast d um a d for arry ng t hid or skins around the master drum to the upardly fa ing ur ce o t r m to di ch ge t hide or ski s clien t the po nt o n a ce to h f i g mo ns,

a lea her W rki g ch n a fram a master feed drum rotatable on the frame,

f d r l o -s n the r ls a ange to k p hid r in p e sed ag i st hem t r e u nd kni e or op at ng agains t e h de'or skin a trav ls aro t m ster d um a conti us op ati n.

3.- .In a l a he worki g machin a fram a m t r drum o a-t bl inthe fr me a food elts ex ending a ound ma r dr i from th unders d t h upp r side he and means for un a i g' a h e r s i mp i ing kn ves Wo ing i the pa e etwee t f ed bel I 5h In a le he Work ng machine, a ra e,

llO

means f r uhha ring ides or skins, a dru a r ta a le n th frame, and a plurality f se s of ee be ts extending inover appi g e ation ar n h rumi 25, In a eathe W king h ne, a fr me, a rum ro table in th am a plurality of sets of feed belts extending'around the drum to hold 3 hide or skin thereon, and two sets of knives, one set arranged to work between the belts of one set of belts and the other set of knives being, arranged t,o' -wor k tween b l s o another set of be t 26. In a ma in for oper g onhi skins, leather and other similar pieces of work, a drum for supporting a piece of work,

a plurality of sets of feed belts extending in 7 end to end overlapping relation to hold a piece of work against the surface of the drum, nstr ent i y f r operating on the Work while supported by the drum. 1

work, a drum for supporting a piece of work,

belts for holding the piece of work against i the surface of the drum, and means arranged to treat the entire surface-of the work facin away from said drum while the piece 'of work is held on each side of the field of treatment by said belts, said work treating means being located with respect to the belts to treat said entire surface of the work without contacting with said belts.

28. In a machine for operatingon hides, skins, leather and other similar pieces of work, a drum for supporting a piece of work, means for holding the piece of work against the cylindrical surface of the drum, and means arranged to treat the entire surface of the work facing away from said drum while the piece of work is held on each side of the field of treatment by said holding means, said work treating means being located with respect to the work holding means to treat said entire surface of the work without contacting with said work holding means. 29. In a machlne for operating on hides,

skins, leather, and other similar pieces of work, a work support, a plurallty of tools arranged ln sets, the tools 1n one set being armachine for operating on hides,

skins, leather and other similar pieces of work, a drum adapted to support a hide or skin, belts adapted to hold thehideor skin against the cylindrical surface of the drum 'and to expose the entire surface of the hide or skin in alternate strips, and meansto' remove the hair from the entire hair-bearing surface of the hide or skin without contacting with said belts.

33. In a machine for operating on hides,

skins, leather andother similar pieces of work, a cylindrical drum adapted tosupport a hide or skin during treatment thereof,

means adapted to hold the hide or skin on the 3 work supporting surface of the drum and to expose the entire surface of the hide or skin in alternate strips, while the drum is rotating, and means comprising a plurality of ranged in staggered relationto 'the tools of another set'to operate upon the entire exposed surface of the piece of work, and feed belts operating in the spaces between the tools and arranged to contact with the piece of work to feed it past the sets of tools.

OpIn a machine for operating on hides,

I skins, leather and other similar pieces of Work, a drum adapted to s'up'port'a hide or skin, belts adapted to hold the hide or skin against the cylindrical surface of the drum and to expose the entire surface of the hide or skin in alternate strips, andm'eans comprising blades arranged to treat the entire surface of the hide or skin facing away from said drum while the hide or skin is held by said belts, the blades being arranged with respect to the belts to treat said entire surface of the work, including portions between the belts,'without contacting with said belts.

31. In a machine for operating on hides, skins, leather and other similar pieces of work, means to treat hides or skins comprising a plurality of blades, a cylindrical drum adapted to support a hide or skin during treatment thereof, and means adapted to hold the hide or skin on the work supporting surface of the drum and to expose the entire surface of the hide or skin in alternate strips,

while the drum is rotating to carry the hide 1 or skin past the plurality of blades for the operation of the latter on the hide or skin, said blades being arranged with respect to the holding means to treat one entire surface of the hide or skin without contacting with said holding means. l

Images