US773742A - Paper-cutting machine. - Google Patents

Description

No. 773,742. PATENTED NOV. 1, 1904. A. C. HILSINGER.

PAPER CUTTING MACHINE.

APPLICATION FILED APR. 12, 1904.

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V PATENTED NOV. 1, 1904.

A. G. HILSINGER. PAPER CUTTING MACHINE.

APPLICATION FILED APR. 12, 1904.

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NITED STATES Patented November 1, 1904.

PATENT Orrrcn.

ALBURTIS C. HILSINGER, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE CHILD ACME CUTTER AND PRESS CO., OF BOSTON, MASSACHU- SETTS, A CORPORATION OF MASSACHUSETTS.

PAPER-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent N0. 773,742, dated November 1, 1904.

Application filed April 12, 1904. Serial No. 202,748. (No model.)

To II/ZZ whom it may concern:

Be it known that I, ALBURTIs C. HILSINGER, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Paper-Cutting Machines, of which the following is a specifica- 'tion.

My invention relates to paper-cutting machines, and is an improvement upon the invention shown and described in the Patent No. 741,134, granted to me October 15, 1903; and it consists in certain novel features of construction, arrangement, and combination of parts, which will be readily understood by reference to the description of the accompanying drawings, forming a part of this application, and to the claims hereto appended, and in which my invention is clearly pointed out. Figure 1 of the drawings is a front elevation of so much of a paper-cutting machine as is necessary to illustrate the invention, parts being broken away or omitted and other parts shown in section, so as to more clearly illustrate the invention. Fig. 2 is a sectional elevation of the right side of the machine with portions of the right-hand side frame broken away and the shafts 11 and 22 and portions of the front and rear tie-girths cut in section. Fig. 3 is a sectional elevation of the worm-wheel and the parts carried thereby looking toward the right of Fig. 1 and drawn to an enlarged scale. Fig. 4 is a section on line A A on Fig.3 and showing an end view of the worm which engages and operates said worm-wheel. Fig. 5 is a sectional elevation, the cutting-plane being on line B B on Fig. 4 looking toward the left of said figure. Fig. 6 is an elevation of the friction brakestrap and the means for adjusting the grip thereof looking toward the left of Fig. 4.

In the drawings, 1 and 2 are the right and left side frames, respectively. 3 and 4 represent, respectively, portions of the front and rear tie-girths, which connect said side frames.

5 is the paper-supporting table or bed.

with the yoke 19, to be moved to 6 is the knife-bar. to said bar.

8 represents two slotted knife-operating yokes or draw-bars, to the lower end of each of which is pivoted one end of a connecting-rod 9, the other end of which is connected to a crank 10, firmly secured on the end of the crank-shaft 11, which is mounted in suitable bearings on the frames 1 and 2 and has intermittent rotations imparted thereto by means of a driving-shaft, a clutch-pulley mounted thereon, and suitable gearing connecting said driving and crank shafts, said driving-shaft, pulley, and gearing not being shown, as they are of well-known construction and are not necessary to the understanding of my present invention.

The knife-bar 6 has connected to its rear side, by means of studs 12, carrying the two antifriction-rolls 13, fitted to and engaging the oblique slots 14, formed in the knife-bar, the clamp-bar 15, which is fitted to and movable vertically in the slots 16, formed in the inner faces of the side frames 1 and 2 in a wellknown manner. The grooves 16 have fitted thereto the metal bars or straps 17, to the upper ends of which are firmly secured the opposite ends of the clamp-bar 18, and to their lower ends is in like manner secured the opposite ends of the yoke 19, which has formed upon or secured to its rear side at each end a series of rack-teeth 20, with which the teeth of the pinions 21, mounted on the shaft 22, engage to move the bars 17, clamp-bar l8, and the yoke 19 upward or downward when said shaft 22 is revolved, according as said shaft is rotated in one or the other direction.

The yoke-bar 19 has secured thereto a pair of flexible straps 23, which pass over pulleys 7 is the knife secured 24, mounted on journals set in the stands 25,

secured to the rib 26 of the table or bed 5, and

have suspended from their other ends the counterweight 27, which when the pressure is removed from the clamp-bars will cause them, the extreme of their upward movements.

A treadle-lever 28 is pivoted at its rear end to the tie-girth L and has pivoted thereto near the middle of its length the link 29, the upper end of which is provided with the slot 30, which embraces the stud 31, which is set in the yoke-bar 19, as shown. The treadle-lever 28 also has connected thereto near its front end one end of a flexible strap 32, which extends upward therefrom, passes over the pul ley 33, front tie-girth 3, and has suspended from its other end the counterweight 35, which serves to raise the front end of said treadle when the foot is removed therefrom after the clamp is locked.

So far as described all the parts of the machine were of well-known construction prior to the granting of my said patent hereinbefore referred to; but there were certain objectionable features in their operation which were partially remedied by my invention shown and described in mybefore-cited patent by the employment of a worm-wheel mounted loosely on the shaft 22 and engaged by the thread of a worm by which said worm-wheel was normally locked against rotation or could be revolved by hand when desired and means for connecting said worm to said shaft, so as to lock said shaft against such a rotation as would allow any upward movement of the clamp-bar, 'and thereby relax its grip upon the pile of paper. This was a great advance in the clamping of piles of paper on papercutting machines; but 1 have found it desirable to make further improvements in order to reduce to aminimum the wear of said wormwheel and the shaft upon which it was mounted and to provide a more effective frictional grip for maintaining the pawl-operating camdisk in its normal or proper working position. To accomplish these desirable results, instead of mounting the worm-wheel 36 upon the shaft 22, I mount it upon a fixed hub or sleeve 37, formed in one piece with or secured to and projecting outward from the frame 2, said worm-wheel being so fitted thereto as to be freely movable about said hub or sleeve when desired by the rotation of the worm 38, the thread of which engages the teeth of said worm-wheel, as shown, said worm being carried by the shaft 39, mounted in suitable bearings formed upon or secured to the frame 2, and having firmly secured upon its front end the hand-wheel a0, by which said worm may be revolved to move said worm-wheel in either direction, as maybe desired. The hub of the worm-wheel 36 projects therefrom toward the frame 2 and has fitted thereon contiguous to the inner face of said worm-wheel the annular disk 41, provided with a hub the peripheral surface of which is frusto-conical, the portion thereofhavingthesmallestdiameterbeingcontiguous to the plate-like portion of said disk, and the face of said disk, which is in contact with the inner face of the worm-wheel 36, has formed therein the cam-recess L2. The exmounted on the stud 3%, set in the l treme inner end of the hub of said worm-wheel l has formed thereon the outwardly-projecting annular lip 43, which engages with a lip 44:, formed upon the stand 4:5, secured by the bolt &6 to the hub or sleeve, whereby said wormwheel is prevented from moving endwise of the sleeve and at the same time is free to be l moved about said sleeve when not locked against such movement.

The frusto-conical portion of the disk 41 has fitted thereon the brake-strap 4:7, provided at its open side with two outwardlyprojeeting ears 48, which when in their norand substantially parallel to each other and are connected together by the bolt 49, provided with a slotted head at one end to bear against one of said ears and a threaded portion at its other end to fit a threaded hole in the other car, said ears and connectingbolt entering and being inclosed by the recess or pocket 50, formed in the stand 45, the transverse length of said recess or pocket being just equal to the length of said boltaE), so that when the head of said bolt bears against one end of said pocket the opposite end of said bolt will be in contact with the other end of said pocket, and thus prevent any possible endwise movement of said bolt; but said bolt may be rotated to regulate the grip of the brake-strap by inserting a screw-driver in the slot of the bolt-head through the hole 51, formed in the wall of said pocket.

The periphery of the hub of disk Ll has mounted thereon between it and the brakestrap 4E7, which is clamped thereto with the proper pressure to create the necessary friction to maintain said disk in its normal fixed position until force is applied thereto to move it out of said position, a band 47, of frictional material, as leather.

The outer face of the worm-wheel 36 has formed therein a circular recess 52 to receive the ratchet-wheel 53, which is keyed or otherwise firmly secured to the shaft 22, which projects beyond the outer end of said hub 0r sleeve 37, in which it has one of its bearings. The recess 52 has an extension 54: to receive the pawl 55, which is mounted upon a pivot pin 56, set firmly in the worm-wheel 36 in position to be alternately moved into and out of engagement with the teeth ofsaid ratchetwheel, said pawl having set therein near its movable end a pin 57 which projects through the hole 58, extending through the web of said worm-wheel, the end of said pin 57 entering the cam'recess 42 and is acted upon thereby to move said pawl out of engagement with said ratchet-wheel and hold it in said disengaged position until said worm-wheel is moved about its axis of motion a distance sufficient to move said pin 57 to the wider end of the cam-recess 42, when the tension of the spring 60, set in a recess in the outer edge of said pawl, forces the movable end of said pawl mal positions are some little distance apart IIO into engagement with the teeth of the ratchet, and thus lock the shaft 22 against such rotation thereof as would cause a relaxation of the grip of the clamp-bar upon the pile of paper.

The construction and arrangement of the worm-wheel, the ratchet, and pawl are similar to the same parts shown and described in my before-cited patent, but are so modified as to adapt said worm-wheel to being mounted on a fixed bearing without contact with the shaft 22 and also to receive the frictional brakecontrolling devices.

The outer face of the worm-wheel has secured thereto the circular cup-like plate 59, which covers the ratchet, pawl, shaft, and the key for securing said ratchet to the shaft, whereby dirt is kept out of the ratchet-andpawl recesses, and a neat finish is produced.

The operation of my invention will be readily understood from the foregoing without further explanation here.

IVhat I claim as new, and desire to secure by Letters Patent of the United States, is-

1. In a paper-cutting machine, the combination of a clamp-bar constructed and arranged to be vertically-movable independent of the movements of the knife-bar; a treadle mechanism for. moving said clamp-bar into contact with the paper to be clamped; a pair of toothed racks connected to said clamp-bar; a pair of pinions engaging said racks; ashaft carrying said pinions and mounted in fixed bearings in the frames 1 and 2; a ratchet-wheel firmly secured to the end of said shaft; a fixed or non-revoluble hub projectingoutward from a side frame to the inner face of the ratchetwheel, and surrounding said shaft; a wormwheel mounted loosely on said fixed hub, between said ratchet-wheel and said frame; a worm engaging said worm-wheel; means for rotating said worm; a pawl carried by said worm-wheel; and means for moving said pawl into and out of engagement with said ratchetwheel.

2. In a paper-cutting machine, the combination of the worm-wheel 36 having the recesses 52 and 54 in its outer face, and a hub on its inner face provided with. an annular lip 43, and mounted loosely on the fixed hub or sleeve 37 so as to be revoluble thereon; the shaft 22; the ratchet-wheel firmly secured on said shaft; a pawl carried by said wormwheel in position to engage said ratchet; a cam-disk mounted loosely on the hub of said worm-wheel and provided with the cam-recess 42; a pin 57 carried by said pawl and projecting through the hole 58 in the worm-wheel and into the cam-recess 42; and the stand 45 provided with the lip 44, as and for the purposes set forth.

3. In a paper-cutting machine, the combination with a shaft to be intermittently rotated and locked in a fixed or non-revoluble position, of the worm-wheel 36 mounted loosely on a fixed bearing and provided With an inwardly-projecting hub; a ratchet-wheel secured upon said shaft; a pawl carried by said worm-wheel; means for moving said pawl into and out of engagement with said ratchet; the cam-disk 41 mounted loosely upon the hub of said worm-wheel; the stand 45 firmly secured by its inner end to a fixed part of the machine and having formed in its outer end the pocket the brake-strap 47 arranged to surround the frusto-conical hub of the cam-disk and provided at its open side with the ears 48; the bolt 49 connecting said ears, said ears and bolt extending into and being inclosed by said pocket 50; a band of suitable frictional material interposed between said frust0-conical hub and the inner surface of said brake-strap; and means for rotating said worm-wheel.

In testimony whereof I have aflixed my signature in presence of two witnesses.

ALBURTIS O. HILSINGER.

WVitnesses:

N. C. LOMBARD, J. H. STEVENSON.

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