US245008A - Paper-cutting machine - Google Patents

Description

(No Model.) 'l l 2 Sheets-Sheet 1.

' L. W. MORSE, Jr.

` y PAIIBR CUTTING MACHINE. I l

No. 245,008. l. Patented A1192, 1881.

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'(NO MOdeL) 2 Sheets-Sheet. 2. Y L. W. MORSE, Jr.

f PAPER CUTTING MACHINE. 1\Io...24. ,008.` Patented Aug'. 2,1881.

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WITNESSES. v |NVENTOR.

j UNITED STATES-"PATENT OFFICE.

LEONARDV. MORSE, JB., OF MYSTIC RIVER, CONNECTICUT.

PAPER-CUTTING MACHINE.

SPECIFICATION .forming part of Letters Patent No. 245,008, dated August 2, 1881. 1 1Appilieatimrflied February 14,1881. (No model.)

To all whom it mag/concern:-

' tion with the accompanying drawings, forming a part of the same, is a full, clear, and exact descrlption thereof.

My invention consists incertain novel combinations of operating mechanismpvhich 'will by the two legs of the forks.

be specified in detail in the several claims hereunto annexed. g ,Y 1

Referring to the drawings, Figure l represents, in frontelevation, a machine embodying my improvement. Fig. 2 shows a side view of the same. Fig. `3 represents a horizontal section on linew, Fig. 1. Fig. 4 shows a horizontal section on line y y, Fig. l. Figs. 5 and 7 represent side views of combined hand and power machines; and Figs. 6 and 8 show top views ot' portions of' the same respectively.

A is the frame of the machine, and A the bed or platform upon which the pile of paper or other material to be cut is placed.

B is the knife-bar, and B the longitudinal knife secured thereto. The knife-bar is connected to the top of the main frame by means of two links, b b. An up-and-down movement is given to the knife-bar by means of toothed gears C, mounted on the operating-shaft C. These gears engage respectively with racks d upon the verticalV rods'D) arranged on each side of the machine. VThe upper ends of these two rods D are forked and carry friction-rollers mounted upon an axle which is supported These rollers occupy and work in slots b in the knife-bar B. The power to work the knife-bar may be obtained from the hand-lever E, or be derived from a pulley-and-clutch connection, as hereinafter explained, and theknife-bar in descending will, in consequence of its linked attachment to the frame, make the necessary draw-cut required'in this class of machines. The return or upward movement of the knife-bar is obtained from a counter-weight, F, located upon the end of a lever, F', pivoted to the frame of d, upon one of the vertical rods D, as shown in Figs. land 4.

The devices and combinations by means of which the pile of paper to be cutis clamped, as the incident of workin g the cutting-knife, are as follows: y

G is the clam p-bar, located, as is usual, directly in rear of .the knife-bar, the lower edge of the clamp-bar occupying a lower plane than the edge of the knife, as shown at Fig. 1. This bar is arranged to have, by means of suitable slots in the frame, the proper up-and-down movement for alternately clamping and releasing the pile of sheets to be cut. Each end of the clamp-bar is furnished with racks g, Fig. 2, with which racks toothed pinions H, mounted upon studs projecting from the sides of the frame, engage. These same pinions H engage also with racks i upon the upper ends of two vertical rods, I. These bars have also upon their lower ends other racks, i', which engage with the toothed gears C secured to the shaft C', as shown at Fig. 2.

It is apparent that when the shaft C' is rocked the gearsOthereonwill cause the knifebar to descend. At the same time the vertical rods I are moved upward, and causing thereby, through the racks upon their upper ends, the pinions H to b'e partially rotated, the clamp-barwill, in consequence, be made to move toward the table. This movement of the clamp-bar is simultaneous with the downward movement of the knife-bar. The lower edge of the clamp-bar being below the edge of the knife, as already stated, the first elfect ot' the movement given to the operating-shaft is to clamp the pile of paper on the table, and presently the further movement in a downward direction of the clamp-bar will be arrested by the resistance of the pile of paper. It it necessary, howeverthattheknife-bar should continue to move toward the table in order to cut the pile of sheets which have thus been clamped.

It will be noticed that the operating-shaft C' is set in blocks J, which are arranged to slide vertically' in guides J in the frame, which is slotted to accommodate such guides, as is seen at Fig. 2. When the clamp-bar is bearing hard upon the pile of paper to compress it any further movement of the operating-shaft G' to work the knife-bar would break the machine, for the reason that in the position of the parts any further upward movement of the rack-bar I, worked by the toothed gear G on the operating-shaft C', is impossible. Consequently the provision for enabling the operating-shaft to be movedbodily downward under this condition of the machine transforms the gears G on the operatingshaft into levers whose fulcrums are the racks i', and any further movement ofthe operatin g-shaftfor working the knife-bar will cause the gearsGto travel along the rack, thereby moving the operatingshaft C bodily downward, and at the same time making the knife-bar complete its downward movement. Thus it will be seen that both the knife-bar and the clamp-bar move simultaneously toward the table until such time as the pile of paper arrests the further movement of the clamp-bar, and that thenceforward the knife-bar moves independently of the clamp-bar, and that a degree of pressure is exerted upon the pile of paper equal to the force applied to drive the knife through the pile of paper, for the reason that the resist` ance with which the knife meets in going through the pile of paper is transmitted to the clamp-bar.

A. spring, K, Fig. l, may be employed to assist the counter-weight F inr returning the shaft C to its normal position.

There is shown at Figs. 5 and G a combined hand and power machine embodying the mechanism above described. It is adapted to be operated either by the hand-lever E or by a belt passing around a driving -pulley, L, Fig. 6, secured to a shaft, M. Upon this shaft are a clutch-box, N, and a gear-wheel, O, Fig. 5, which engages with an auxiliary rack, d2, on one of the rods D which work the knife-bar. In case the machine is driven by a belt and pulley it must be supplied with means for breakingthe clutch connection to throw oli' the power when the knife has performed its work, There is accordingly placed on the side of the rod D a pin, l. When the rod D descends to its lowest point in bringing down the knife-bar thus pin l will strike against an arm, m, on a rock-shaft., n, Fig. 5. This rock-shaft carries another arm, o, at right angles, or nearly so, with the arm m, and this arm 0 is connected with the shipping-gear for opening the clutch in a well-understood way.

In Figs. 7 and S another combined hand and power machine embodying myimprovements is shown. The power is applied to the pulley L' mounted on the shaft M which carries a friction-clutch, N', and a toothed wheel, O', Fig.

5. This gear engages with the teeth of a rack, q, upon a vertical rack-bar, Q, and which has also atits lower end a second or auxiliary rack, q', engaging with the teeth of a segmental gear, R, on the shaft C. The shaft C can be worked by the hand-lever E, or power can be applied to the driving-pulley L. An arrangementof mechanism, in oase the machineis used as apowermachine,fordisconnectingthepower as soon as the cutting-knife has done its work is employed, which is the same as that shown in Figs. 5 and 6.

I am aware that rack-bars and gearing have heretofore been employed in many ways in connection with knife-bars and clamping-bars, and that these latter have been thereby operated with relation to each other substantially as in my machine; but I 'know of no prior paper-cutting machine which embodies the peculiar combination of gears and rack-bars herein described.

I am also aware that such machines have heretofore been operated by power and provided with automatic clutches for limiting the application of power to the full descentof the knife-bar; but the organization of mechanism for attaining this end employed by me is believed to be novel.

I am also aware that a weighted lever has heretofore been employed for lifting the knifebar and clamping-bar; but 1 know of no prior instance in which said weighted lever was not also employed as a part ofthe mechanism by which the knife and clamp were depressed.

A machine embodying the several combinations of elements as organized and claimed by me is compact and operates promptly, smoothly, and efficiently.

What I claim as my invention, and desire to secure by Letters Patent, as an improvement in machines for cutting paper, Snc., is-

1. The combination of the rack-rods for respectively operating the knife-bar and clamping-bar, the shaft and gears which impart motion to said rack-rods, and the gears which operatively connect one of said rack-rods to the clamping-bar by way of the rack on the clampingbar, substantially as described.

2. The combination, with the knife bar, clamping-bar, rack-rods, and the gears which impart a downward movement to said bars, of the weighted segmental lever and rack-rod for lifting said bars, substantially as described.

3. The combination, with the knife bar, clamping-bar, rack-rods, and their connecting-gearing, of the belted driving-shaft and gear meshing with an auxiliary rack co-operating with or forming a part of one ofthe main rack-rods, and an automatic clutch for operatively disconnecting the driving-shaft from the rack-rods at the termination of the downward stroke of the knife-bar, substantially as described.

4. The combination of the knife-bar, clampin g-bar, rack-rods, and their connecting-gear- IOO IIO

in g', the belted drivin g-shaft and gear meshing with an auxiliary rack moving With the main rack-rods, an automatic clutch for operatively disconnecting the driving-shaftfrom the knifebar and clamping-bar, and the Weighted segmentaltoothed lever and rack for promptly.

lifting said bars when released by the automatic clutch, substantially as described.

5J The combination, with the knife-bar, the

rack-rods, and the gears meshing therewith 1o for operating the knife-bar, of the tripping-pin l on one of said rack-rods, the double-armed rock-shaft n, and the clutch on thedrivingshaft, substantially as described.

LEONARD W. MORSE, JR. Witnesses:

EDsoN SALISBURY J ONES, W. H. THURsToN..

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