US473731A

US473731A - edwards

Info

Publication number: US473731A
Authority: US
Publication date: 1892-04-26
Anticipated expiration: 1909-04-26

Description

(No Model.) 3 Sheets-Sheet 1 A. 8: R. J. EDWARDS. MACHINERY OR APPARATUS FOR CUTTING PAPER OR OTHER SUBSTANCES INTO SHEETS.

Patented Apr. 26, 1892.

- (No Model.) 3 SheetsSheet 2.v

A. & R. J. EDWARDS. MACHINERY 0R APPARATUS FOR CUTTING PAPER OR OTHER 4 SUBSTANCES INTO SHEETS.

Patented Apr. 26, 1892.

M/QZr-M 3 M 9 h S up MW e h S 3 S D R A W D E J R & Am A m M m MACHINERY 0R APPARATUS FOR CUTTING PAPER OR OTHER SUBSTANCES INTO SHEETS.

Patented Apr. 26, 1892.

UNITED STATES PATENT OFFICE.

ARCHER EDWARDS AND RICHARD JOHN EDWARDS, OF LONDON, ENGLAND.

MACHINERY 0R APPARATUS FOR CUTTING PAPER OR OTHER SUBSTANCES INTO SHEETS.

SPECIFICATION forming part of Letters Patent No. 473,731, dated April 26, 1892. Application filed June 8,1891. Serial No. 395,581. (No model.) Patented in England January '7, 1889, N0. 286.

To aZZ whom it may concern:

Be it known that We, ARCHER EDWARDS and RICHARD JOHN EDWARDS, subjects of the Queen of Great Britain, residing at London, in the county of Middlesex, England, have invented a new and useful Improvement in Machinery or Apparatus for Cutting Paper or other Substances into Sheets of Uniform Size, (for which we have obtained a patent in Great Britain, No. 286, dated January 7, 1889,) of which the following is a specification.

Our invention relates to improvements in machines for cutting into sheets of any desired size rolls of emery or glass cloth or paper or for cutting up paper or card-board or other substances; and it consists of the novel features herein described and claimed.

Reference is had to the accompanying drawings, in which Figures 1 and 2 are side views of the entire machine, parts being omitted in Fig.2. Fig. 3 is a view from below, and Fig. 3 an end view, of a circular cutter and the method of adjusting it. Figs. 4 and 4: are cross-sections of one form of reversible cutting-knife. Figs. 5, 5, and 6 are detailed views of circular cutters. Fig. 7 is a detailed view of an adj ustable friction-brake upon the toothed wheel, by which the feeding forward of the material is effectcd.

Similar letters and figures refer to similar parts throughout the several figures.

a is a frame,preferably of cast-iron, in the upper part of which is arranged a transverse shaft b, which can be set in revolution by a belt d, passing round a driving-pulley and kept tight by means of a movable pulley c, which can be pressed against the moving belt or removed from it, as desired, by means of a lover or handle e for the purpose of starting or stopping the machine.

Across the upper part of the machine, at a sufficient distance above the transverse shaft 17, we arrange a transverse lever or frame f, carrying a cutting-knife g. This lever is of considerable weight, and it is pivoted at one end upon a transverse pivot or center h, turning upon the points of adj ustable steel screws it, carried by the frame of the machine. The other end of the heavy knife-lever f rests upon a cam 10, driven by the shaft 1) and toothed wheels Z Z, with or Without the intervention of a friction-roller. The cam is so formed that it raises the heavy knife-lever f and blade g gradually and then allows them to fall suddenly, the free end of the lever falling upon a block or buffer of india-rubber or other soft or elastic material.

Upon the upper part of the frame a is arranged a horizontal table, upon which the material to be cut is fed forward under the movable knife-blade g, and immediately under the latter the material passes over a fixed knife-blade m, past the edge of which the falling blade falls in the manner of shears, so as to instantaneously out the material transversely. A vertical guide n is fixed to the frame of the machine and guides the outer end of the knife-lever f as it falls, with the interyention of a friction-roller 0 upon the lever, the guide being preferably slightly inclined, so that the lever falls freely at first, but toward the end of its stroke is brought close against the fixed knife-blade, so as to make a clean cut.

In order to feed forward the material upon the table, it is passed between horizontal rollers r r, revolving in bearings upon the frame of the machine. These rollers are preferably covered with leather or india-rubber, and the lower one r revolves in bearings upon the pivoted frame t, which is pressed up with sufficient force by an adjustable weighted lever to o in the lower part of the machine. The upper roller r is set in revolution by means of a toothed wheel e0 gearing with an intermediate toothed wheel 10', which is itself driven by a toothed wheel "w upon the cam-shaft,a1- ready described. This last toothed wheel w has the teeth removed from a sufficient part of its circumference in such a position that when the material has been fed forward upon the table into exactly the proper position to be cut transversely the part of the wheel to which is devoid of teeth comes opposite to the intermediate wheel w, which accordingly ceases to revolve and the material remains stationary. At this moment the movable knife-blade g falls and cuts the material, and the knife-blade is then raised again by the cam in. As soon as it is high enough the toothed part of the wheel w comes into gear with the intermediate wheel 20 and the rollers r 7" are again set in motion and the material fed forward, and so on continuously. The material is supplied to the apparatus in the form of a roll 8, of sufficient length, upon a movable axle turning in hearings in the frame of the machine or in a separate frame. In order to determine the exact length of the pieces to be cut in the manner described, we make the axlev or stud which carries the intermediate toothed wheel to described adjustable in position, so that the teeth upon the driving-wheel to may come into or out of gear with its teeth somewhat earlier or later, as may be desired, the movement of the rollers and the extent to which the material is fed forward being slightly varied accordingly. If the wheel to is withdrawn from the wheel 10 so far that only the points of the teeth upon the two Wheels come into gear together, then when the space upon the wheel 20 which is free from teeth is reached during its revolution it comes more quickly out of gear with the wheel w than if the teeth were deeply in gear and the Wheel 10 moves the feeding-rollers r T, which it drives, for a proportionately shorter distance and. the length of the sheet cut is slightly reduced. An extremely accurate adjustment for this purpose is obtained by making the stud by which the wheel to is carried adjustable in position,the stud being carried by a sliding piece working in the guide or slide 00, which is pivoted to the frame of the machine at 00. By turning the screw y the sliding piece and stud, together with the wheel w',can be exactly adjusted, so that the teeth of the latter come into gear with those of thewheel w to a depth exactly necessary for the precise length of sheet which is to be out. By the vertical screw y the position of the pivoted slide 00 can be accurately adjusted and fixed, so that the teeth of the wheels to and to always remain properly in gear, a support of the necessary thickness being placed below the outer end of the slide 0:.

Where the material is to be divided longitudinally as well as cut transversely in the manner described, we arrange two steel cutting-disks z z one above and one below the material. These disks are arranged upon horizontal transverse axles, their side faces being in contact with each other in the proper position in the width of the material, so that when in revolution they act as circular shears or cutters. The upper disk 2 is driven by toothed wheels 1 2 2, one of which is fixed upon the axle of the roller 1, and the lower disk 2' is fixed upon a spindle which turns upon conical steel points, the position of which can be accurately adjusted endwise by means of adj listing-screws, so that the disk is adjusted transversely, as shown in Fig. 3 in plan, its bearings being carried in a frame 3, which slides in transverse guides 4., carried by the frame, and the position of which is adjustable by the

screws

5, 5, and 5. By means of the handscrew 5 the whole frame 3 is moved bodily in the guides 4, while the adjustment in the frame for wear in the journals is made by the screws 5.

A piece of india-rubber or other elastic ma terial is used at 6, by which the cutters are kept pressed together laterally.

8 is a guiding plate or board under which the sheet to be cut passes.

In order that the cutting-disks may retain recesses, and we find that in this way the.

disks continue sufficiently sharp to out well for a long time without sharpening.

Instead of disks having recesses, as described, we may use steel tubes of sufficient length, diameter, and thickness, as illustrated in Fig. 6. l/Ve arrange two of

such tubes

10 and 11 end to end in such manner that the square end of each overlaps the. other for a short distance in the manner described when the recessed disks are used. The tubes are fitted upon metal or other revolving mandrels or centers 12. The tubes are fixed by screws 16 or other means, and they may be arranged so that as their cutting ends wear they can be brought forward upon their mandrels. In this way the cutting-edges will last for a long time before it is necessary to substitute fresh tubes.

The cutting devices described may be used for other purposes as well as for cutting the materials longitudinally in the machine-as, for instance, for cutting sheets of paper, cloth, or other material. The intermediate toothed wheel to is provided with a rubber washer 13, which is pressed against by the nut 14:, and so acts as an adjustable friction-brake, as illustrated in Fig. 7, by which its momentum is prevented from carrying the movement of the feed-rollers too far.

In Fig. 7, w is the toothed wheel carried upon a stud or center, but prevented from turning too freely by a washer or disk of felt or cloth 13, which can be tightened against the wheel vw as desired, by the nut 14. The material is fed forward to the transverse cutting-knife under an adjustable guide-board, the lower side of which may be faced with steel, and the material after being cut into sheets of the exact size required is pushed forward upon a delivering table or chute, from which it is removed at intervals.

In a convenient position in the machine we arrange a counting device 9, Fig. 1, of the ordinary well-known kind, which is operated by any of the moving parts. We prefer to connect a bell 9 with this counter, so that when a certain number of sheets have been delivered an audible indication is given.

It is evident thatby using a suflicientnumber of cutting-disks the material may be divided longitudinally into three or more parts instead of two only.

The fixed and movable cutting-knives m and g are preferably made of such section that when one edge is worn blunt the blade can be turned partly round and another edge brought into operation. The blades may be longitudinally channeled at their sides, as shown in Fig. 4, or each blade may consist of a central bar of iron or steel, rectangular in cross-section, as shown in Fig. 4, a blade of steel 7 7 being arranged upon two of its opposite sides and attached to it by screws, which also fix it in position. Each of these blades 7 7 can be removed and reversed when desired, so that all its four edges can be used in succession, the two blades providing eight edges, all of which can be used in succession before they are sharpened.

WVe do not confine ourselves to the precise form and arrangements of the several parts of the machine, which may be varied more or less to suit varying circumstances; but

WVhat we claim is 1. In a cutting-machine of the character described, the combination, with a frame and a driving-shaft set transversely thereon, of a cam driven by said driving-shaft, a reciprocating knife pivoted at one end to said frame and lifted at the other end by said cam, an adjustable inclined guide for said reciprocating knife, a fixed knife set in said frame and adapted to coact with said reciprocating knife, and means for bringing the material between said knives, substantially as described.

2. In a cutting-machine of the character described, the combination, with a transverse shaft, of the cam 7c on said shaft, a toothed wheel to, with teeth extending only partly around the periphery thereof, also on said shaft, an adjustable toothed wheel to, meshing with said toothed wheel 10, a toothed wheel 'w meshing with said toothed wheel 20', and friction-rollers r and r on the same shafts with the said toothed wheels to and w and driven thereby, substantially as and for the purposes described.

3. In a cutting-machine of the character described, the combination, with a transverse shaft, of the cam is on said shaft, a toothed wheel w, with teeth extending only partly around the periphery thereof, also on said shaft, an adjustable toothed wheel to, meshing with said toothed wheel w, a pivoted frame carrying said toothed wheel and screws for adjusting said frame horizontally and vertically, and a toothed Wheel 141 meshing with said toothed wheel to, and friction-rollers r and r on the same shafts with the said toothed wheels to and w and driven thereby, substantially as and for the purposes described.

4. In a cutting-machine of the character described, a reversible H-shaped knife-blade composed of a central rectangular bar and reversible rectangular plates secured on either side of said bar and lapping over the sides thereof, substantially as described.

5. In a cutting-machine of the character described, the combination, with a revolving cutting-disk .2 held against axial movement, of an axially-adjustable disk z, overlapping the edge of the said disk I: and mounted upon adjustable conical bearings 5, a frame 3, adapted to be moved in the line of the axis of the disk 2', and guides 4 for the said frame, substantially as described.

6. In a cutting-machine ofthe character described, the combination, with a revolving cutting-disk .2, held against axial movement, of an axially-adjustable disk 2, overlapping the edge of the said disk 2 and mounted upon adjustable conical bearings 5, a frame 3, adapted to be moved in the line of the axis of the disk 2, and guides 4 for the said frame, and a hand-screw 5, and rubber buffer 6, substantially as described.

In testimony whereof we have hereunto set our hands in the presence of two witnesses.

ARCHER EDWVARDS. RICHARD JOHN EDWARDS. Witnesses:

JANE GRAY RIDGWAY, ALEXANDER RIDGWAY.

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