US266004A - Egbert smith allen - Google Patents

Description

(No Model.) 7

R. S. ALLEN.

MACHINE FOR CUTTING LEATHER.

Patented Oct. 17, 1882.

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UNITED STATES PATENT OFFICE.

ROBERT SMITH ALLEN, oE DEEEINe, MAINE, AssIcNoR To eHAELEs E.

MORRILL, ()F sAME PLAeE. I

MACHINE FOR CUTT ING LEATHER.

SPECIFICATION forming part of Letters Patent No. 266,004, dated October 17, 1882.

Application filed March 7, 1862. (No model.)

To all whom it may concern:

Be it known that I, RoBEET SMITH ALLEN, of Deering, in the county of Cumberland and State of Maine, have invented certain new and useful Improvements in Machines for Cutting Leather; and I do hereby declare that the following is a full, clear, and exact description of the invention, that will enable others skilled in the art to which it appertains to make and use the same, reference being bad to the accompanying drawings, forming a part of this specification, in which- Figure l is a side elevation; Fig. 2, a front elevation, and Fig. 3 a detail showing the ratchet and pawl.

In preparing shoe-bindings the tanned skins are first cut into strips of double the width of the binding to be made.

My invention has reference to a machine for so cutting the skins, which is described as follows.

Upon the top of the frame of the machine (see Figs. 1 and 2) is placed the horizontal shaft to, having three eccentrics, b, c, and d. The eccentrics Z) and c, which are similarly situated on the shaft a, carry the rods ff, of equal length, which are at their lower ends pivoted to the knife or cutterg at the same distance from the shaft a. The cutting-edge of the knife 9 is not parallel with the shaft a, but is at one end slightly lower than at the other. The sides of this knife or cutter run in vertical grooves in or near the sides of the frame of the machine, and just behind the steel plate, which is placed at the rear of the table It and parallel with the knife g. The front of the knife or cutter plate has at each side an eyelet, Z, through each of which passes a pin or stud, 8, having a stopat its upper end,and being rigidly attached atthelowerend to the barp. Sgrronnding the pin or stud s, and between the eyelet Connected with the eccentric d is the rod 0, which is pivoted at the lower extremity to the lever n, which lever rotates on the shaft 8.

Rigidly attached to the shaft 8 are the cogwheel at and the ratchet l. A pawl matching the ratchet is pivoted to the lever n, the pawl being pressed against the ratchet by a spring.

On the outer surface of the ratchet is a curved slide, at, having a curved slot concentric with the ratchet, through which, by means of setscrews, the slide is secured to the ratchet and adjusted. The lower end of this slide toward the pawl should be of such shape that as the slide is moved toward the pawl it willcome in contact with it.

Matching the gear on is a smaller gear, 2, which is rigidly fixed to a shaft, 11, carrying a frictiomroller, 00, which runs parallel with the cutter nearly the whole width of the table, with which it is quite or nearly in contact throughout its length.

Connected with each ofthejournals in which the shaft '0 is hung are rods extending vertically downward and connecting with the lever 2, by means of which the friction-roller a may be raised from the table.

The eccentric d should be so adjusted on the shaft a that while the rodsfandfare ascending the rod 0 will be descending.

The operation of the deviceisobvious. The skin to be cut is placed upon the table, and the roller being raised the edge of the skin is passed beneath the roller, which is then released. The rod 0, descending, presses down the lever 11, by means of which the gear m is given part of a rotation, and the friction-roller thus rotated carries forward beyond the edge of the table the width of skin which it is desired to out olf. As the skin is being carried forward the cutter descends, and when the skin has reached the proper point the bar It holds it until the cutter has descended and begun to rise again. As the cutter rises the frictionroller carries forward another width of skin. The width of skin to be cutoff is regulated by the number of teeth in the ratchet l, and by means ofthe curved slottedslide a. (See Fig.3.)

By means of the set-screws the slotted slide a may be moved to the right or left. When moved to the left to the extent admitted by the slot (see Fig. 3.) no part of the slide will be in contact with the pawl, whatever the position of the rod 11. By carrying the slide a to the right (see Fig. 3) its lower end may be so placed that when the red at is fully raised the pawl cannot come in contact with the ratchet, and will only connect with the ratchet when the rod 42 has descended a portion of the are it describes. By thus adjusting the position of the slide a the amount or degree of revolution given the ratchet by the pawl may be adjusted or controlled, and the necessity for changing the ratchet whenever a change in the width of leather to be cut is desired 01)- viated.

What I claim as my invention, and desire to secure by Letters Patent of the United States of America, is-

1. In a machine for cuttingleather, the combination of the shaft a, eccentrics I) and 0, rods ff, cutter or knife g, and bar 1), with springs a",

for the purposes set forth.

R0 BERT SMITH ALLEN.

Witnesses:

DAVID W. SNOW, G. E. BIRD.

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