US868667A

US868667A - Machine for buffing strips of leather.

Info

Publication number: US868667A
Application number: US36259107A
Authority: US
Inventors: Robert K Johnstone
Original assignee: A C LAWRENCE LEATHER Co
Current assignee: A C LAWRENCE LEATHER Co
Priority date: 1907-03-16
Filing date: 1907-03-16
Publication date: 1907-10-22
Anticipated expiration: 1924-10-22

Description

PATENTED OCT. 22, 1907.

R. K. JOHNSTONE. I MACHINE FOR'BUFFING STRIPS 0P LEATHER.

APPLICATION FILED MAR.16. 1907.

No. 868,667. PATENTED OCT. 22, 1907.

' R. K. JOHNSTONE.

MACHINE FOR BUFFING' STRIPS 0P LEATHER nrmonxon FILED MAR. 1e, 1 07.

3 SHEETS-SHEET 2.

PATENTED oath-22,190

R. K. JOHNSTONE. v MACHINE FOR BUFFING STRIPS 0P LEATHER APPLICATION FILED MAE-16, 1907.

3 SHEETS-SHEET 3. 4

E/ 6 wk RR R &6 90

witnesses: Inve tor: h/ WZ Q' H 44 W76 THE NORRIS pz-rzn: cc., wnsnmawu, n, c.

UNITED STATES PATENT oEEIcE.

ROBERT K. JOHNSTONE, OF SALEM, MASSACHUSETTS, ASSIGNOR TO A. O. LAWRENCE LEATHER COMPANY, A CORPORATION OF MAINE.

MACHINE FOR BUFFING STRIPS OF LEATHER.

Specification of Letters Patent.

Patented Oct. 22, 1907.

Application filed. March 16,1907. Serial No. 362,591.

To all about it may concern:

Be it known that l, ROBERT K. JonNsToNE, a citizen of the United States, residing at Salem, in the county of Essex and State-of Massachusetts, have invented new and useful Improvements in Machines for Buffing Strips of Leather, of which the following is a specification.

This invention relates to improvements in machines for buffing strips of leather. In the preparation of strips of leather to be used in the manufacture of welts the grain surface of the leather is coated with blacking or other coloring matter. The nature of the grain of the leather is such that it will not take the blacking evenly and to obviate this difficulty it is desirable that before the blacking process takes place, a very small amount of the grain surface of the leather shall be removed or buffed.

The object of this invention is to provide a machine which shall perform rapidly, uniformly and accurately the operation of boiling such strips of leather.

The invention consists in the combination and arrangement of parts set forth in the following specification and particularly pointed out in the appended claims.

Referring to the drawings: Figure 1 is a front elevation of my improved buffing machine. Fig. 2 is a side elevation viewed from the right of Fig. 1. Fig. 3 is a side elevation viewed from the left of Fig. 1. Fig. 4 is a section partly in elevation taken on line 4-4 of Fig. 3 looking toward the left. Fig. 5 is an enlarged detail section taken on line 55 of Fig. 3 looking toward the left. Fig: 0 is an enlarged detail side elevation of the cutter. Fig. 7 is a detail side elevation of the cam.

Like numerals refer to like parts throughout the several views of the drawings.

In the drawings, 10 is a base having a frame 11 mounted thereon. A main driving shaft 12 is journaled in a bearing 1.3 fast to the frame 11, said shaft having pulleys 1-], l5 and 16 fast thereto. A cuttershaft 1'7 is journaled in a bearing 18 fast to the frame 11., while a cutter 19 is fast to said cutter shaft. The cutter 19 is preferably constructed in the following manner: A hub 21) is provided with two sets of helical grooves in which are secured a set of blades 21 which constitute left hand helices and a set of blades 22 which constitute right hand helices. Two end plates or shrouds 23 and 2-1 are fast to opposite ends, respectively, of the hub :30.

A pulley 25, fast to the cutter shaft 17, is operatively connected by a belt 26 to the pulley 16. The pulley 1.5 may be connected by a belt (not shown) to any suitable source of power. The pulley 14 is operatively connected by a belt 27 to a pulley 28, the pulley 28 being fast to a shaft 29, said shaft being journaled in bearings 30 and 31 fast to the frame 11. A frame 32 is pivoted on the shaft 29, while a slide 33 is slidably mounted on said frame 32 and is adapted to move longitudinally of and parallel with the cutter shaft 17. A shaft 34 journaled on the slide 33 has fast thereto an abrasive wheel 35, while a pulley 36 is fast to the opposite end of said shaft. A belt 37 operatively connects the pulley 36 to a pulley 38 fast to the shaft 29, the pulley 38 being of such a width of face as to allow the belt 37 to travel to and fro thereon as the slide 33 is reciproeated, as will be hereinafter described. A worm 39 formed on the shaft 29 meshes into a worm gear 40 journaled on a stud or shaft 41 fast to the frame 32, said frame being provided with a recess 42 in which said worm and worm gear are located. A pinion 43, fast to the worm gear 40, meshes into a gear 44, said gear 44 being secured to a cam 45. The cam 45 is journaled on a shaft 46 fast to the frame 32. The recess 42 in which the cam 45, gear 44 pinion 43, worm gear 40, and worm 39 are located is closed by a capplate 47 provided with a slot 48. The slot 48 is formed concentric with the center of the shaft 41. An arm 49 is pivotally mounted on the shaft 41, said aim being provided with a slot 50 through which the shaft 46 projects, said slot being formed concentric with the shaft 41.. A cam-roll 51 rotatably mounted on the arm 49 engages a slot 52 formed in the cam 45, said cam being preferably heart shaped. The mm 49 is connected by a link 53 to a bracket 54 fast to the slide 33. It'will be seen that as the cam 45 is rotated a uniform reciprocatory movement will be imparted to the slide 33, it being understood that as said slide is reciprocated, the belt 37 moves from end to end of the pulley 38.

In order that the abrasive wheel 35 may be moved toward the cutter 1.9 to compensate for wear both of said abrasive wheel and said cutter, the pivoted frame 32 is rocked on the shaft 29 in the following manner: A screw-threaded rod 55 is pivoted at 56 to a bracket 57 fast to the frame 32. A nut 58 provided with an annular groove 59 has screw-threaded engagement with the rod 55, while a bracket 60 fast to the frame 11 is provided with a fork 61 which engages the annular groove formed in the nut 58. It will be understood that the rotation of the nut- 58 causes the rod 55 to be moved toward the left or right (Fig. 4) according to the direction of rotation of said nut, thereby rocking the frame 32 on the shaft 41. When the frame 32 has been properly adjusted so that the abrasive wheel 35 is in contact with the cutter 19, a check-nut 62 is rotated in the proper direction to lock the nut 58 against rotation.

A feed-roll shaft 63 is journaled in a bearing 64 and in bearing

brackets

65, 65, said bearing and bearing brackets being mounted on a bracket 67 fast to the allowing the table 78 to drop by its weight, so that the l frame 11. A driving-pulley 68 fast to the shaft 63 may be driven by a belt (not shown) connected to any suitable source of power, it being understood that the pul ley 68 is rotated much more slowly than the pulley 15.

A feed-roll shaft 69 is journaled in

boxes

70, 70 slidably arranged in the bearing

brackets

65, 65. A feedroll 71 is fast to the shaft 69, while a feed-roll 72 is fast to the shaft 63. The feed-roll 71 may be adjusted toward the feed-roll 72 by means of

screws

73, 73 which bear against the

boxes

70, 70. A gear 74, fast to the shaft 63, meshes into a gear 75 fast to the shaft 69.

A frame 76, pivoted at 77 to the bracket 67, supports a worktable 78, said work-table being pivoted at 79 to said frame. A lever 80, pivoted at 81 to the bracket 67, is connected by a link 82 to a bracket 83 fast to the frame 767 The operator by grasping the handle 84 formed on the lever may rock the frame 76 on its pivot 77 into any desired position with relation to the cutter 19, and when said frame is in the desired position, the lever 80 may be rigidly secured to a segmental bracket 85 by a clamping-screw 86 having screwthreaded engagement with said lever, said clampingscrew being adapted to move in the slot 87 formed in the bracket 85 concentric with the pivot 81.

A guide-roll 88 is fast to a shaft 89, said shaft being journaled in suitable bearings formed on the table 7 8. Two rolls 90 and 91, located on opposite sides, respectively, of the guide-roll 88, are rotatably mounted on the frame 76. A cam 92 is pivoted at 93 to the frame 76, said cam being provided with ahandle 94 by means of which said cam may be rocked on said pivot.

The table 78 is provided with an inclined projection 95 which rests on the cam 92. By rocking the cam 92 on its pivot 93, the table 78 may be rocked on its pivot 79 and thus the guide-roll 88 is moved toward or away from the cutter 19, as may be desired. Two stopscrews 96 having screw-threaded engagement with the table 78 are adapted to strike the under side of the frame 76 and thereby limit the upward movement of the table 78. The stop-screw 96 may be adjusted to determine the upward limit of movement of the table 78 and the guide-roll 88.

A strip of leather 97 passes across a plate 98 fast to the upper side of the table 78, beneath and part way around the roll 90, above and part way around the roll 88 and beneath and part way around the roll 91 from thence passing between the feed-rolls 71 and 72. A presser block 99, hearing against the upper side of the strip 97, is pressed thereagainst by a spring 100. A shouldered screw 101, passing through a hole in the spring 100, is screwed into a plate 102 extending across the frame 76 and secured to

cars

103, 103 formed on said frame. A cam 104, pivoted at 105 to the plate 102, is provided with a handle 106, by means of which said cam may be rotated on said stud, whereby the tension of the spring against the presser block 99 may be removed. The tension of the spring 100 on the pr esser block 99 may be varied by rotating the screw 10] in the proper direction.

The general operation of the machine hereinbefore specifically described is as follows: Assuming that there is no strip of leather in the machine, the operator, by means of the handle 9 f, rocks the cam 92 on its pivot 93 into the position shown in dotted lines (Fig. 1), thus operator may introduce the strip of leather 97 under the presser block 99, under the roll 90, over the roll 88, under the roll 91, and between the feed-rolls 71 and 72. He then applies power to start the machine and at the same time rocks the cam 92 into the position shown in full lines (Fig. 1), thereby forcing the guide-roll S8 upwardly between the two rolls 90 and 91, and thereby bringing the upper surface of the strip of leather 97 into contact with the cutter 1.9, said cutter being rotated at a high rate of speed in the direction of the arrow a (Fig. 1), it being understood that the feed rolls 71 and 72 feed the strip of leather 97 slowly in the direction of the arrow b (Fig. 1). It will be understood that the amount of material taken off of the surface of the strip 97 is very small, the shavings being so small as to be practically in the form of a powder.

As it is essential that the blades of the cutter 19 shall.

be at all times very sharp, in order to perform their work abrasive wheel slowly traversing the face of the critter 19, 'as hercinbefore described, and said wheel being rotated in the direction of the arrow (1.

In case of accident or necessity at any time during the operation of the machine, the operator may loosen the clamp-screw 86 and rock the lever 80 on its pivot, thereby rocking the frame 76 on its pivot and consequently moving the strip of leather 97 out of operative engagement with the cutter 19.

Having thus described my invention, what I claim and desire by Letters Patent to secure is:

1. In a machine of the character described, a frame, a cutter rotatably mounted on said frame, means for rotating said cuticr, means for feeding a strip of sheet material transversely of said cutter, means for guiding said strip in a curvilinear path tangent to the periphery of said cutter. whereby a convex surface of said strip is presented to the action of said cutter, and frictional tension ineairs acting on said strip, said cutter being located between said feeding means and said tension rneairs.

2. In 21 machine of the character described, a frame, a cutter rotatably mounted on said frame, means for rotating said cutter, means for feeding a strip of sheet mate al transversely of said cutter, means for guiding said strip in a curvilinear path tangent to the periphery of said critier. whereby a convex surface of said strip is presented to the action of said cutter, said guiding means movable toward and away from said cutter, and frictional tension means acting on said strip, said cutter being located between said feeding means zilld said tension means.

I). In a machine of the character described, :1 frame, a cutter rotatably mounted on said frame, means for rotating said critter, means for feeding a strip of sheet material transversely of said cutter, means for guiding said strip in a curvilinear path tangent to the periphery of said cutter, whereby a convex surface of said strip is presented to the action of said cutter, means for adjusting said guiding mcairs toward said critter, and frictional tension means acting on said strip, said cutter being located between said feeding means and said tension means.

i. In a machine of the character described, a frame, a cutter rotatably mounted on said frame, means for rotating uZlid cutter means for feeding a strip of sheet material transversely of said cutter, means for guiding said strip iii a curvilinear path tangent to the periphery of said cutter, whereby a convex surface of said strip is presented to the action of said critter, and a pivoted table which sup ports said guiding means. the pivotal axis of said table ar ranged parallel to the axis of said cutter.

In a machine of the character described, a frame, a critter rotatably mounted on said frame, means for rotating said critter, means for feeding a strip of sheet material iransverscly of said cutter, means for guiding said strip in a curvilinear path tangent to the periphery of said cutter, 1 whereby a convex surface of said strip is presented to the action of said cutter. a pivoted table which supports said guiding means, the pivotal axis of said table arranged parallel to the axis of said cutter, and means for moving said table toward said cutter.

U. in a machine of the character described, a frame, a cutter rotatably mounted on said frame, means for rotating said cutter, means for feeding a strip of sheet. material transversely of said cutter, a guide roll which said s rip passes part way around, whereby a convex surface of rid strip is presented to the action of said cutter, and frictionai tension means acting on said strip, said cutter being;' located between said feeding means and said tension means.

7. In a machine of the character described, a frame, a cutter rotatably mounted on said frame, means for rotating said cutter, means [or feeding a strip of sheet mateiial transversely of aid cutter, a guide roll which said strip 1 passes part; way around, whereby a convex surface of said strip is pre. mtcd to the action of said cutter, two other rolls arranged on opposite sides of d guide roll and parallel therewith. and frictional tension means acting on said strip. said cutter being located between said feeding means and said tension means.

H. in a machine of the character described. a frame, a cutter rotatably mounted on said frame, means for rotating said cutter, two feed rolls adapted to feed a strip of sheet material transversely of said cutter, means for guiding said strip in a curvilinear path tangent to the periphery of said cutter. whereby a coin x sui ice of said strip is presented to the action of said critter, a table on which said guiding means are supported, said table being mov able toward said cutter. and frictional tension means act:- ing on said strip, said cutter being located between said feed rolls and said tension means.

it. in a machine of the character described, a frame. a cutter rotatably mounted on said frame, means for feeding a strip of sheet material transversely of said cutter, means for guidin said strip in a. curvilinear path tangent to the periphery of said cutter, whereby a convex surface of said strip is presented to the action of said cutter, an abrasive wheel arranged in contact with the periphery of said cutter, with its axis parallel to the axis of said cutter. a second frame pivoted to said first frame with its axis parallel to the ax s of said cutter, said abrasive wheel supported on "11d second frame, mechanism adapted to impart a rotary movement: to id abrasive wheel, and mechanism adapted to impart a rcciprt tory movement; to said abrasive wheel longitudinally of said cutter.

to. In a machine of the character described, a frame, a cutter rotatably mounted on said frame, means for rotating said cutter, means for feeding a strip of sheet material transversely of said cutter. means for guiding said strip in a curvilinear path tangent to the periphery of said cute for. whereby a convex surface of id strip is presented to the 2 tion of said cutter, an abrasive wheel arranged in contact with the periphery of said cutter cond frame pivoted to said first frame with its ax s parallel to the axis of said cutter, said abrasive wheel supported on said second frame, and means for rotating said abrasive wheel.

1]. In a machine of the character described, a frame, a cutter rotatably mounted on said frame, means for rotating said cutter, means for feeding a strip of sheet material transversely of said cutter, means for guiding said strip in a curvilinear path tangent to the periphery of said cut;- ter, whereby a convex surface of said strip is pr sented to the action of said cutter, an abrasive wheel arranged in contact with the periphery of said cutter, a second frame pivoted to said first frame with 1 axis parallel to the axis of said cutter, said abrasive wheel supported on said second frame, means for rotating said abrasive wheel, and mechanism adapted to impart a reciprocatory nryement to said abrasive wheel longitudinally of said cutter.

12. in a machine of the character described, a frame, a cutter rotatably mounted on said frame, means for impart; ing a rotary movement to said cutter, means for feeding a strip of sheet material transversely of said cutter and in contact therewith, an abrasive wheel arranged in contact with the periphery of said cutter, a shaft to which said wheel is fast, said shaft ar 'anged substantially parallel to I the axis of Sjtit'l cutter, a slide on which said shaft is journaled, a second frame pivoted to said first frame with its axis parallel to the axis of said cutter, said slide mounted on said second frame to move longitudinally olf said cutter, a pulley fast to said shaft, a second shaft journaled on said first frame concentric with the pivotal axis of said second frame, a pulley fast to said second shaft, a belt operatively connecting said first named pulley to said second named pulley, and mechanism adapted to impart a reciprocatory movement to said slide.

13. In a machine of the character described, a frame, a cutter rotatably mounted on said fram means for rotating said cutter, means for feeding a s lp of sheet material transversely of said cutter, means for guiding said strip in a curvilinear path tangent; to the periphery of said cutter, whereby a convex surface of said strip is presented to the action of said cutter, an abrasive wheel arranged in contact with the periphery of said cutter, a shaft: to which said wheel is fast, said shaft arranged substantially p: r allel to the axis of said cutter, a slide on which said shaft is journaled, a second frame pivoted to said first frame with its axis parallel to the axis of said cutter, said slide mounted on said second frame to move longitudinally of said cutter, mechanism adapted to impart a rotary move ment to said shaft, and mechanism adapted to impart a reciprocatory movement to said slide.

l-t. In a machine of the character described, a frame, a cutter rotatably mounted on said frame. means for re tating said cutter, means for feeding a strip of sheet material transversely of said cutter, means for guiding said strip in a curvilinear path tangent to the periphery of said cutter, whereby a conv X surface of said strip is presented to the action of said cutter, an abrasive wheel arranged in contact with the periphery of said cutter, a shaft to which said wheel is fast said shaft arranged substantially parallel to the axis of said cutter, a slide on which said shaft is journaled, a second frame pivoted to said first frame with its axis parallel to the axis of said cutter, said slide mounted on said second frame to move longitudinally of said cutter, a pulley fast to said shaft, a second shaft journaled on said first frame concentric with the pivotal axis of said second frame, a pulley fastto said second shaft, a belt operatively connecting said first named pulley to said second named pulley, and mechanism adapted to impart a reciprocatory movement to said slide.

15. In a machine of the character described, a frame, a cutter rotatably mounted on said frame, means for re tating said cutter, means for feeding a strip of sheet: material transversely of said cutter and in contact therewith, an abrasive wheel arranged in contact with the periphery of said cutter, a shaft to which said wheel is fast, said shaft arranged substantially parallel to the axis of said ct 'ter, a slide on which said shaft is journaled, said slide adapted to move longitudinally of said cutter, a pulley fast to said shaft, a second shaft journaled on said frame, a pulley fast to said second shaft, a belt operatively connecting said first named pulley to said second named pul' ley, a worm fast to said second shaft, a worm gear meshing into said worm, a cam adapted to be rotated by said worm gear, an arm pivotally mounted on said frame, said arm operatively connected to said slide, and a cam-roll journaled on said arm in operative engagement with said cam.

ltl. In a machine of the character described, a frame, a cutter rotatably mounted on said frame, means for re tating said cutter, means for feeding a strip of sheet material transverselvof said cutter and in contact therewith, an abrasive wheel arranged in contact with the periphery of said cutter, a shaft to which said wheel is fast, said shaft: arranged substantially parallel to the axis of said cutter, a slide on which said shaft is journaled, said slide adapted to move longitudinally of said cutter, a second shaft journaled on said frame, said second shaft operatively connected to said first; named shaft, a worm fast to said second shaft, a worm gear meshing into said worm, a cam adapted to be rotated by said worm gear, an arm pivotally mounted on said frame, said arm operatively connected to said slide, and a cam-roll journaled on said arm in operative engagement with said cam.

17. In a machine of the character described, a frame,

a cutter rotatably mounted on said frame, means for retating said cutter, means for feeding a strip of sheet n terial transver v of said cutter, means for guiding said strip in a curvilinear path tangent to the periphery of said cutter, whereby a convex surface of said strip is presented to the action of said cutter, an abrasive wheel arranged in contact with the periphery of said cutter, a shaft to which said wheel is fast, said shaft arranged substantially parallel to the axis of said cutter, a slide on which said shaft is journaled, said slide adapted to move longitudi nally of said cutter, a second shaft journalcd on said frame and operatively connected to said first named shaft, a worm fast to said second shaft, a worm gear meshing into said worm. a cam adapted to rotated by said worm gear, an arm pivotally mounted on said frame, said arm operatively connected to said slide, and a canrroll i()lll'll;li ed on said arm in operative engagement with said cam.

18. In a machine of the character described, a frame, a cutter rotatably mounted on said frame, means for rotating said cut't r, means for feeding a strip of sheet material transvei ly of said cutter. means for guiding said strip in a curvilinear path tangent to the periphery of said cutter, whereby a convex surface of st id strip is presented to the action of said cutter, an abrasive wheel arranged in contact with the periphery of said cutter, a shaft: to which said wheel is fast, said shaft: arranged substantially parallel to the a is of said cutter, a slide on which said shaft is journaled, said slide adapted to move longitudinally of said cutter, a pulley fast to said shaft, a second shaft journaled on said frame. a pulley fast to said second shaft, a belt operatively connecting said first named pulley to said second named pulley, a worm fast to said second shaft, a worm gear meshing into said worm. a cam adapted to be rotated by said worm gear, an arm pivotally mounted on said frame. said arm operatively connected to said slide. and a cam-roll ;iournaled on said arm in operative engagement with said cam.

1!). [n a machine of the character described, a frame, 1 cutter rotatably mounted on said frame, means for feeding a strip of sheet material transversely of aid cutter, an abrasive wheel arranged in cnntact with the periphery of said cutter with its axis parallel to the axis of said cutter, a second frame pivoted to said first frame with its axis parallel to the axis of said cutter, said abrasive wheel supp rtcd on said second frame, means to rotate said abrasive wheel, and mechanism adapted to impart a rc ciprecatory movement to said abrasive wheel longitudinally of said cutter.

20, In a machine of the character described, a frame, a cutter rotatably mounted on said frame, means for rotat ing said cutter, means for feeding a strip of sheet material transversely of said cutter, an abrasive wheel arranged in contact with the periphery of said cutter, a second frame pivoted to said first: frame with its axis parallel to the axis of said cutter, said abrasive wheel supported on said second frame. and means for rotating said abrasive wheel.

In a machine of the character described, a frame, a cutter rotatably mounted on said frame, means t..r rotating said cutter, means for feeding a strip of sheet material transversely of said cutter, an abrasive wheel arranged in contact with the periphery of said cutter, a shaft to which said wheel is fast, said shaft arranged substantially parallel to the axis of said cutter, a slide on which said shaft is journaled, a second frame pivoted to said first frame with its axis parallel to the axis of said cutter, said slide mounted on said second frame to move longitudinally of said cutter, mechanism adapted to impart a rotary movement to said shaft, and mechanism adapted to impart a rcciprtmatory movement to said slide.

23. In a'machine of the character described. a frame, a cutter rot:- 'ably mounted on said frame, means for rotat ing said cutter, means for feeding a strip of sheet material transversely of said cutter, an abrasive wheel arranged in contact with the periphery of said cutter, a shaft to which said wheel is fast said shaft arranged substantially parallel to the axis of said cutter, a slide on which said shaft journaled. a second frame pivoted to said first frame with its axis parallel to the axis of said cutter, said slide mounted on said second frame to move longitudinally of said cutter, a pulley fa, to said shaft, :1 second shaft journalcd on said first lrame concentric with the pivotal axis of said second frame, a pulley fast to said second shaft a belt operativcly connecting said firstnamed pulley to said second-named pulley, and mechanism adapted to impart a rcciprocatory movement to said slide.

24-. in a machine of the character described, a frame, a cutter rotatably mounted on said frame. means for rotating said cutter, means for feeding av strip of sheet mate ial transversely of said cutter, a guide roll which said strip passes part way around, whereby a convex surface of said strip is presented to the action of said cutter, two other rolls arranged on opposite sides of said guide roll and parallel therewith, a pivoted table which supports said guide roll, and a pivoted frame which supports said two other rolls.

:23. In a machine of the character described, a frame, a cutter rotatably mounted on said frame, means for r0tat ing said cutter, means for feeding a strip of sheet material transversely of said cutter. a guide roll which said strip past part way around, whereby a convex surface of said strip is presented to the action of said cutter, two other rolls arranged on opposite sides of said guide roll and parallel therewith, a pivoted table which supports said guide roll, a pivoted frame which supports said two other rolls. means for rocking said pivoted table on its pivot, and means for rocking said pivoted frame on its pivot.

26. in a machine of the character described, a frame, a cutter rotatably mounted on said frame, means for rotat ing said cutter, means for feeding a strip of sheet material transversely of said cutter, a guide roll which said strip passes part wa around, whereby a convex surface of said strip is presented to the action of said cutter, two other rolls arranged on opposite sides of said guide roll and parallel therewith, a pivoted frame on which said two other rolls are journaled, and a table on which said guide roll is journaled, said table being pivotally mounted on said pivoted frame.

27. in a machine of the character described, a frame, a cutter rotatably mounted on said frame, means for rotating said cutter, means for feeding a strip of sheet material transversely of -rid cutter, a guide roll which said strip passes part way around, whereby a convex surface of said strip is presented to the action of said cutter, two other rolls arranged on opposite sides of said guide roll and parallel therewith, a pivoted frame on which said two other rolls are journaled, a table on which said guide roll is ,iournaled, said table being pivotally mounted on said pivoted frame, means for rocking said pivoted frame on its pivot, and means for rocking said table on its pivot.

in testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

ROBERT K. JOHNSTONE.

Witnesses LOUIS A. Jones, ANNIE .J. Duran.