US741134A - Paper-cutting machine. - Google Patents

Description

PATENTED 001?. 13,1903.-

'A. c. HILSINGBR.- PAPER CUTTING MACHINE.

APPLICATION FILED APR. 29, 1903.

v 2 SHBETS-SHBBT 1.

N0 MODEL.

PATENTED OCT. 13, 1903,

A; O. HILSINGER. PAPER CUTTING MACHINE. U

2 SHEETS-SHEET 2.

APPLIGATION FILED APR. 29, 1903. no MODEL.

No. 741,134. Patented October 18 1903.

Warren STATES amnnr Option.

ALBURTIS C. HILSINGER, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE CHILD ACME CUTTER AND PRESS 00., OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

PAPER-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 741,134, dated October 13, 1903.

Application filed April 29, 1903- Serial No. 154,860. (No model.) I

To aZZ whom, it may concern: 6 is the knife-bar; 7, the knife secured to Be it known that LALBURTIS O. HILSINGER, said bar. of Boston, in the county of Suffolk and State 8 8 are two slotted knife-operating yokes or of Massachusetts, have invented certain new draw-bars,to the lower end of each of which 5 and useful Improvements in Paper-Cutting is pivoted one end of a connectingnod 9, the

Machines, of which the following, taken in other end of which is connected to a crank 10, connection with the accompanying drawings, firmly secured on the end of the crank-shaft is a specification. 11, which is mounted in suitable hearings on Thisinvention relates to paper- cutting mathe frames 1 and 2 and has intermittent ro- IO chines of the class in which a pile of paper is tations imparted thereto by means of a drivclamped in a fixed position on a stationary ing-shaft, a clutch-pulley mounted thereon, table or bed and a knife is arranged and opand suitable gearing connecting said driving crated to pass downward through said pile of and crank shafts, said driving-shaft, pulley, paper and divide it into two parts, and has and gearing not being shown in the drawings,

:5 especial reference to a combined foot and as they are of well-known construction and hand clamping mechanism; and it consists are not necessary to the proper understandin certain novel features of construction, arving of this invention. rangement, and combination of parts, which The knife-bar 6 has connected to its rear will be readily understood by reference to side by means of the studs 12, carrying the 20 the description of the accompanying drawantifriction-rolls l3, fitted to and acted upon ings and to the claims hereto appended, and by the oblique slots 14, formed in said knifein which the'invention is clearly pointed out.- bar, the clamp-bar 15, which is fitted to and Figure 1 of the drawings is a front elevamovable vertically in the slots 16, formed in tion of so much of a paper-cutting machine the inner faces of the side frames 1 and 2, in

25 as is necessary to illustrate the invention, a well-known manner. The grooves 16 have parts being broken away or omitted and other fitted thereto the metal bars or straps 17, to parts shown in section to the more clearly the upper ends of which are firmly secured illustrate the invention. Fig. 2 is an elevathe opposite ends of the clamp-bar 18, and to tion of the right side of the machine with theirlowerendsareinlikemannersecured the 0 portions of the right-hand side frame broken opposite ends of the yoke 19, which has formed away, with the shafts ll'and 22 and portions upon or secured to its rear side at each end a 8o of the front and rear tiegirths cut in section. series of rack-teeth 20, with which the teeth Fig. 3 is a sectional elevation of the wormof the pinions 21, mounted on the shaft 22, wheel, the ratchet-wheel, the locking-pawl, engage to move the bars 17, clamp-bar 18,

35 and a portion of the ratchet-inclosing disk, and the yoke 19 upward or downward when the cutting plane being on line B B on Fig. said shaft 22 is revolved, according as said 4 and looking toward the left of said figure. shaft is rotated in one or the other direction. Fig. 4 is a section on A A on Fig. 3 looking The yoke-bar 19 has secured thereto a pair toward the right of said figure. Fig. 5 is a of flexible straps 23, which pass over pulleys 4o partial section on line C C on Fig. 3 and look- 24:, mounted on journals set in the stands 25,

ing toward the right of said figure; and Fig. secured to the rib 26 of the bed or table 5, and 6 is an elevation of the worm -wheel, the have suspended from their other ends the ratchet wheel, and the pawl looking toward counterweight 27, which when the pressure is the left of Figs. 1 and 4. removed from the clamp-bars will cause them, 45 In the drawings, 1 and 2 are respectively with the yoke 19, to be moved to the extreme the right and left side frames. 3 and 4: repof their upward movements.

resent,"respectively, portions of the front and A tr'eadle-lever 28 is pivoted at its rear end rear tie-girths connecting said side frames. to the tie-girth 4. and has pivoted thereto near 5 is the paper-supporting table or bed. the middle of its length the link 29, the up per 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 pulley 33, mounted on the stud 34, set in the front tie-girth 3, and has suspended from its other end the counterweight 35, which serves to raise thefront end of said treadle when the foot is removed therefrom after the clamp is locked.

So far as described all of the parts of the machine are of well-known construction; but the means employed to operate the clampingbars by hand or foot power as heretofore practiced were objectionable, for the reason that when operated by hand the clamp-bar was moved downward and upward by the operation thereon of a pair of screws to which a considerable number of revolutions had to be imparted to accomplish the desired result, which made it a slow operation, and if the clamp-bar was moved down by the foot there was no way of locking said bar in clamping position except by the operator keeping his foot on the treadle until the cutting was completed. To obviate these objections is the object of my present invention, and to this end a worm-wheel 36 is mounted loosely on the left end of the shaft 22 outside of the frame 2, the teeth of which are engaged by the spiral thread of the worm 37, carried by the shaft 38, mounted in suitable bearings 39, formed upon or secured to the frame 2, said shaft 38 having firmly secured upon its front end the hand-wheel 40, by which said shaft 38 may be revolved by the operator. The worm-wheel 36 has formed in its inner face a circular recess 41 to receive the ratchetwheel 42, which is splined to the shaft 22 by the key 43, so that said ratchet-wheel and the shaft 22 must be revolved together. The recess 41 has an extension 44 upon one side tained by means of the segmental gib 51, having its inner or contacting surface lined with leather or other suitable material 52, as shown in Figs. 3 and 4.

The operation of this invention is as follows: The several parts of the machine being in the positions shown in the drawings and a pile of paper to be cut having been placed upon the table 5, the operator places his foot upon the treadle and depresses it, thereby moving the yoke 19, the straps 17, and the c1amp-bar 18 downward until said clamp-bar comes into contact with and partially clamps the pile of paper, which is done almost instantly, and he then completes and solidifies the clamping by hand, as follows: Before removing his foot from the treadle he imparts a single revolution to the hand-wheel 40, its shaft, and the worm 37 in the direction indicated by the arrow near the hub of said wheel on Fig. 1, thereby moving the worm-wheel 36 about the axis of said shaft 22 a distance equal to the pitch of the teeth of said wheel, carrying with it the pawl 45, while the disk 49 is held stationary on the sleeve 50 by the friction of the gib 51 52 thereon until the stud 47, set in the pawl 45, reaches the wider end of the slot 48, when the tension of the spring 53, set in a recess 54, formed in the back of said pawl, and bearing against the wall of the extension 44 of the recess 41, presses said pawl into engagement with a tooth of said ratchet-wheel, as shown in Fig. 3, the cam side of the slot 48 contacting with the stud 47 to control the inward movement of said pawl, whereby the shaft 22 and the clamping devices are locked against any reverse movement after the clamp-bar has been brought into contact with the paper until the cutting of the paper is completed, unless previously released by the operator. When this stage of operation is reached, the shaft 22, the worm-wheel 36, the pawl 45, the ratchet-wheel 42, and the disk are so connected together that a further rotation of the hand-wheel 40 in the same direction will cause a further movement of said shaft about its axis in the direction indicated by the arrow near the periphery of the pinion 21 on Fig. 2, thereby imparting to said clamp-bar 18 an additional downward movement sufficient to firmly clamp and solidify the pile of paper preparatory to cutting the same. The shaft 11 is now set in motion by the operator through the medium of any Well-known clutch mechanism and gearing, (not shown,) one rotation of said shaft causing a downward and upward movement of the knife-bar, the first of which causes the knife to cut through the pile of paper and divide it into two parts and the latter returns the knife-bar and knife to their normal positions, as shown in the drawings. When the operator has given the first revolution to the hand-wheel ,40, and thereby locked the clamp-bar against upward movement, he may remove his foot from the treadle and stand at ease while he completes the clamping by hand, and when the knife has completed its downward movement and out through the pile of paper he gives one revolution to the hand-wheel 40 in the reverse direction to that indicated by the arrow on Fig. 1, which unlocks the clamping devices and permits the force of gravity acting upon the counterweight 27to automaticallyand quickly move the clamp-bar 18 to the extreme of its upward movement, as shown in the drawings.

By the employment of this invention a great advantage is obtained over the ordinary hand-clamp as heretofore employed in much. greater speed of operation by virtue of the IIO fact that the clamp-bar is moved through a large part of its downward movement by the rapid movement of the operators foot, and all of its upward movement is obtained by the action of the force of gravity, and at the same time all of the advantages and accuracy of operation of the hand-clamp are retained.

What 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 clampbar into contact with the paper to be clamped; and means for more effectually completing said clamping by hand, and locking said clampbar against upward movement thereof while the paper is being cut, comprising a pair of toothed racks connected to said clamp-bar; a pair of pinions engaging said racks; a shaft carrying said pinions; a ratchet-wheel firmly secured to said shaft; a worm-wheel mounted loosely on said shaft; a pawl carried by said worm-wheel in position to engage said ratchetwheel; a worm engaging said worm-wheel; and means for moving said pawl into and out of engagement with said ratchet-wheel, as and for the purposes described.

2. In a paper-cutting machine the combination with the clamp-bar 18, the straps 17, and the yoke 19 constituting a rectangular frame fitted to and movable vertically in suitable grooves formed in the inner faces of the side frames 1 and 2, a treadle mechanism for moving said clamping-frame downward to clamp the pile of paper, a pair of toothed racks on said yokes, the pinions 21 engaging said racks, and the shaft 22 carrying said pinions; of mechanism for locking said clampbar against upward movement, comprising the worm-wheel 36, having formed in its inner face the recesses 41 and 4A, and mounted loosely on the shaft 22; a ratchet keyed to said shaft and inclosed in said recess 41; the pawl 45 located in the extension-recess 44:, and pivoted to said worm-wheel, and provided with the stud 17; a spring carried by said pawl and serving to press said pawl inward or toward the axis of said shaft; the

'disk 49 frictionally mounted on the fixed sleeve 50 and provided with the cam-slot 48 to receive said stud 47; a worm engaging said worm-wheel; and means for operating said WOIlIl.

3. In a paper-cutting machine, the combination of a combined foot and hand clamping mechanism comprising a rectangular frame composed of the clampbar18,the straps 17, and the yoke 19; a pair of toothed racks on said yoke; the shaft 22; a pair of pinions carried by said shaft and engaging said racks; a counterweight connected to and arranged to overbalance said rectangular frame and the friction of said shaft 22; a treadle mechanism for moving said rectangular frame downward; a worm-wheel mount-ed loosely on said shaft; a ratchet secured to said shaft so as to revolve therewith; a pawl pivoted to the side of said worm-wheel; means for moving said pawl into engagement with said ratchet; means for withdrawing said pawl from engagement with said ratchet; a worm engaging said Worm-wheel; and means for revolving said worm in either direction; and means for automatically returningsaidclampbar to its uppermost position after the cutting is completed.

4. In a paper-cutting machine, the combination with the clamp-operating shaft 22, of a worm-wheel mounted loosely on said. shaft; a worm engaging said worm-wheel; means for operating said worm by hand; a ratchet firmly secured to said shaft, and revoluble therewith in close proximity to said worm-wheel; a pawl pivoted to said worm-wheel and provided with the projecting stud 4.7; and acamdisk frictionally mounted upon a fixed bearing, and provided with a cam-slot constructed and arranged to act upon said stud 4:7 to move the pawl out of engagement with said ratchet; and means for automatically moving said pawl into engagement with said ratchet, as and for the purpose described.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, on this 10th day of April, A. D. 1903.

ALBURTIS C. HILSINGER.

Witnesses:

N. C. LOMBARD, EDWARD H. TAVARY.

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