US390151A

US390151A - Paper-cutting machine

Info

Publication number: US390151A
Authority: US
Publication date: 1888-09-25
Anticipated expiration: 1905-09-25

Description

4 Sheets-Sheet 1.

(No Model.)

H. BARTH 8v E. LIETZE.

PAPER CUTTING MACHINE.

NA PETERS, Plmtnzulhugnphm, wnshmgton. D4 Cv 4 Sheets-Sheet 2.

(No Model.)

H. BARTH au E. LIETZB.

PAPER CUTTING MACHINE.

No. 890,151. Patented Sept. 25, 1888.

N: Pneus. vnamxmognphcr. Wushu-gm n. c.

4` sheets-sheet 8..

(No Model.)

I-I.k BARTH 88E. LIETZE.

PAPER CUTTING MACHINE.

810.880,15-1. Patented sept. 28, 1888.

N. PETERS. PhumLixhugnplwr, washington. aC,

4 Sheets-Sheet 4.

H. BARTHKU E. L-IEWB.l

(No Model.)

PAPERv CUTTING MACHINE.

Patented Sept. 25, 1888.

N. PEYERS. Pxmln-Lilhnguphnr. wmhmgmn. D. c.

NITED STATES PATENT OFFICE.

HENRY BARTH AND ERNST LIETZE, OF CINCINNATI, OHIO.

PAPER=CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 390,151, dated September 25, 1858.

Application tiled July 15, 1886. Serial No. 208.147. (No model.)

To all whom it may concern.-

Be it known that we, HENRY BARTH and ERNST LIETZE, both citizens of the United States, and both residing at the city of Oin cinnati, in the county of Hamilton and State of Ohio, have invented a new and useful Paper-Gutter, of which the following is a speciiication.

Our invention relates to improvements in machines in which piles of sheets of paper are cut into smaller sheets, and in which packs of paper, books, pamphlets, Src., are trimmed by placing the articles to be cut on a carriage that is moved against a stationary' knife.

The objects of our improvements are, first, to devise a paper-cutter in which the knife is held in such a manner that the paper can be placed upon the table from one end of the knife as well as from the front or back of thc same; second, to provide an arrangement to facilitate the straightening of the packs of paper to be cut or trimmed; third, to afford a compact and substantial frame of the machine, and, fourth, to design an automatic operating device for stopping the cutting motion of the machine at a certain point without annihilating the mechanical work stored up in the iiy wheel. Ve attain these objects by the mechanisms illustrated inthe accompanying drawings, in which- Figure 1 is a front elevation of the entire machine; Fig. 2, a plan or top view of the machine, Figs. 3 and 4, sectional detailed views, showing the cross-head or block by means of which the connecting-rod of the cutting motion is attached to the main slide 2; Fig. 5, a detailed view illustrating the automatic stopping device; Fig. 6, a longitudinal sectional View of the machine on the vertical plane A B, Fig. 2, which passes through the edge of the knife; Fig. 7, a front elevation, and Fig. 8 a side view, of thc frame ofthe machine.

Similar letters refer to similar parts throughA out the several views.

The frame of the machine is a hollow casting. On the same three distinct parts may be distinguished: first the lower horizontal part, 1f, Figs. 6 to 8, forming the base, being provided at its upper surface with ways for the carriage 2 to slide upon 5 secondly, the vertical column-likepartl g, to which thejournal-boxes ofthe main shaft 27 ofthe intermediate shaft,24, and of the fly-wheel shaft 19 are applied, and, thirdly, the oblique arm or beam 1li above the base, to which the knife 6 is bolted. The beam 1 h is united by one of its ends with the colu nin-like part 1 g, and extends freely over the ways on which the carriage 2 slides, so that the space under the knife is accessible from one end as well as from the front or back. The edge of the knife forms an acute angle with the top surface of the ways on the base, and is located in the vertical plane passing the longitudinal center line between the ways, in order to cause the principal stress, due to the force required for cutting the paper, to be in this vertical plane, and to have no component acting under an angle to said plane, which would cause ilinching. The carriage or slide 2, Fig. 1, has an oblique or inclined top surface, to which the front part, 3, and rear part, 4, Fig. 2, of the table are secured, and with it, in one piece, the gallow-frame 13 is cast. The oblique arm ofthe latter runs parallel with the table, and is prov-ided with guides for the bar 14 of the paper-clamp to slidein. The table is fitted with a stationary side guide, 7, and a movable back guide, 9, the latter being operated by means of the move-screw and the handwheel 12 in a usual manner. In a groove left between the two parts of the table a square Wooden stick, Fig. 2, is placed, to prevent the edge of the knife from getting dull.

The paper to'be cut is placed upon the ohliquc table and pressed together by means of the paper-clamp, which is constructed as follows: The clamping-bar 14, Fig. 1, is furnished with two nuts, 8 8, in which the screws 15 15 operate. These screws are journaled, near their upper ends, in projections prepared for this purpose at the upper extension of the gallow-frame 13, in such a manner as to be incapable of longitudinal motion, and the spurwheels 16 16 are keyed to their upper ends. The intermediate wheel, 17, is fastened to the hub of the hand-Wheel 18 and gears with the wheels 16 16. The hand-wheel 18 is turnable on a stationary pin, which is secured to the upward extension of the gallow-frame 13, and when it is turned the screws 15 15 will be turned also, and the clampingbar 14 either moves against the paper and compresses the IOO same or it moves from the paper, according to the direction in which the hand-wheel is turned.

Theinclination of the table facilitates greatly in straightening the paper. In all paper cutters in which the knife is stationary, and in which the paper is placed upon a carriage and moved against the knife to be cut, built previous to ours the table had a horizontal position.

r1`he slide 2 is provided with the two pins 51 and 52. The first one, 51, is located at the center of the end of the oblique arm of the gallow-frame 13 and serves as a pivot for the swiveling bar 50. The second one, 52, is placed a little below the tablein the same vcrtical plane as the first one. When paper is to be put on the table or to be removed from the same, the swiveling bar 50 is to be moved upward to occupy the position in which it is drawn in full lines in Fig. 1, and before the paper is compressed the said bar may be swung around to the position in which itis indicated in Fig. 1 by dotted lines, wherea notch inthe bar will hook over the pin 52. This is not absolutel y necessary, but it adds to the strength of the oblique beam ofthe gallow-frame 13.

In order to cut the paper, the carriage with the compressed paper, is moved toward the right, by a mechanisln which we will describe hereinafter, until the point a of the paper will come in contact with the point c of the edge of the knife and the point?) will meet the point d.

In paper cutters previously invented the paper is either stationary and the knife movable or the knife is stationary and in a horizontal position, and the paper, being placed upon a carriage which slides on an inclined plane, is moved oblique] y upward against the knife. The latter arrangement has a certain similarity with that in our machine, as the knife is stationary and the paper is moved against the knife; but the paper, the table, and the support of the table are to be lifted in this arrangement, which requires an expenditure of mechanical work. This lifting is avoided in our machine, as the k nifestands oblique and parallel with the paper, and every point of the paper and every point of its support are moved in a horizontal line.

The reciproca-ting sliding motion of the carriage is derived from the fly-wheel shaft 19, which may be driven by a belt passing around the pulley 20, or may be turned by hand if the ilywheel 28 is furnished with a handle for this purpose. Besides the pulley 2O and the fly-wheel 23, the pinion 21, which also forms onepart of a clutch, and the second sliding part, 22, of a clutch are placed on the shaft 19. rI he pinion 21 turns loosely on the shaft, and is prevented from movinglongitudinally at one side by the frame and at the other side by a collar of the shaft. The shaft is fitted with a feather, and the sliding part 22 of the clutch is prepared with a correspondinggroove to impart the rotary motion of the shaft to the same. In Fig. 2 the clutch is shown in the position it occupies when the pinion is disengaged. In order to couple the pinion to the shaft and to set it in motion, the sliding part 22 of the clutch is to be moved toward the frame, so that its teeth grip into the clutchteeth of the pinion. In the drawings we have shown a clutch with teeth; but it may be seen that a friction-clutch may be used just as well. The pinion 21 gears with the wheel 25, which is keyed to the intermediate shaft, 24, and the pinion 26, also fastened to the intermediate shaft, works with the wheel 28 of the main shaft 27 and trans mits the motion to the same. (Those wheels and pinions which are not visible in Figs. 1 and 6 are indicated by dotted circles representing the pitchlines ofthe same.) The main wheel 28 is so constructed as to act also as a crank. 29 being the crank-pin and the circle 30 the trace of the center of this pin, the connecting rod 31 converts the rotary motion of the main shaft 28 into the reciprocating motion of the carriage 2.

The wrist-pin 32, by means of which the rod 31 is connected with the slide 2, is not directly attached to the slide, but to the block or crosshead 33. (See Figs. 3, 4, and 6.) This block is fitted in a groove provided for the same in the slide 2, and may be movedy in and out, parallel to the motion of the carriage 2, by means of the screw 34, which works in a nut tapped in the block, and which is so applied to the slide 2 as to be incapable of longitudinal motion relatively to the slide. The bolt 35 serves to tighten the block 33 to the carriage. The object of this arrangement is to adjust the position of the carriage so that the knife 6 will eut through the paper,but not too deeply into the wooden strip between the two parts of the table. Such an adjustment will be necessary every time after the knife has been ground sharp, as it will become smaller by this operation. This device for regulating the depth of the cut is more convenieut and substantial than the older wellknown contrivanec, in which the knife is adjustable in the direction perpendicular to the paper. Nevertheless, in our machine the wrist-pin 32 could be attached directly to the carriage 2 and the knife arranged adj ustably without the machine losing its other new features.

The machine is to be started by the operA ator,but the stopping is effected automatically by means which we will describe now. The upright shaft 46 is supported and held in position by the foot-step 17 and the journal-box 4S, and carries the two arms 45 and 49, which are fastened to the same. lhc footstep l17 and the journal-box 48 are secured to the frame. The upper arm, L19, has a form some what similar to that of a horseshoe. It surrounds the sliding part 22 of the clutch on the ily-wheel shaft, and is provided with two hubs, one above and one below the bearing48,which IOO IIO

prevent it from moving longitudinally. ln the clutch 22 an annular groove is turned in, and two semirings are inserted in this groove and connected by means of pins with the arm 49 in a manner often used for operating clutches. Near the end of the backward-directed lower arm, 45, the cross-head 44, Fig. 5, is applied to the same, so as to be capable of vibrating around its vertical axis. -The cross-head has a hole to receive the rod 40, which is turned to a shoulder, and is secured to this rod by means of a nut. The rod 40 passes through holes drilled in the shell of the upright part of the hollow frame and is pivoted to and carried by the arm 37, which vibrates on the pin 38, that is secured to the frame. A spring, which is slipped upon the rod 40, rests against the shell at the left side (when speaking of' right and left we refer to Fig. l) of the vertical part of the frame, in which the hole is only large' enough for the rod, passes through the larger hole at the right sideof the frame, presses against the crosshead 44, and has the tendency to engage the clutch and to couple the pinion 21 with the rotating iiy-wheel shaft. By pulling the rod 40 in the direction so as to compress the spring on the same until the rod occupies the position in which it is drawn in Fig. 1 the clutch may be disengaged and the machine stopped. This operation may be conveniently performed by hand by using the handle in which the arm 37 terminates. To effect the stopping ofthe carriage automatieally,the rod 40 extends toward the left of the pin 39, by means of which it is `jointed to the arm 37, and the projecting part of the rod 40 is provided with the pin 41, which projects toward the carriage, and upon which the nose of the trigger-arm 42 acts. The pin 4l is prepared with a fiat part fitting in a long hole of the rod 40, and can be moved to and from the pin 39, and can be fastened to the rod at such a position as is required to cause the carriage to stop in its extreme left position. 'lt may be seen that the slot receiving thepin 4l, instead of being applied to the connecting-rod 40, may just as well be prepared iu an extension of thev arm 37. The trigger-arm 42 is pivoted to the carriage 2 by means of the pi n 43 and terminates in a handle.

in Fig. l the different parts of the machine are drawn in the positions they occupy when the machine is ready to be started, the paper having been placed on the table and compressed, while in Fig. 6 the carriage.2 is shown at half-stroke, the paper half ent through, and the other visible moving parts lin corresponding positions.

Before starting the machine the operator has to move the swiveling bar 50 to the position indicated by dotted lines, and in order to set it in motion he has only to lift the arm 42 to release thepin 41,which will set the spring on the rod 40 free to act, to move the upright rock-shaft 46,and to engage the clutch so as to couple thepinion 2l to the rotating fly-wheel shaft. The arms 37 and 42 and the rod 40 will then occupy the positions in which they are shown in Fig. 5. The nose of the arm 42 will rest upon thepin 41; but as the arm 42 moves with the carriage it will leave the pin, drop down,and rest upon the flange ofthe carriage or upon a pin provided for the purpose, and when the carriage arrives at its extreme right position and thepaper is cut through, the arm 42 will be in the position inwhich it is drawn in dotted lines in Fig. 5. In returning with the carriage the nose of the arm 42 meets the pin 4l, pulls the rod 40 toward the left, conlpresses the spring on the latter, moves the rock-shaft 46 with its arms, disengages the clutch, and so stops the machine.

Having fully described our invention, what we desire to claim and secure by Letters' Pat ent isl. In a paper-cutting machine, in combination with a reciprocating carriage, 2, upon which the paper to be cut is placed and clamped, the stationary knife 6, and the arm 1h, Fig. 6, by which the knife is held, the' arm 1 71y being firmly united with the frame of the machine at one side of the paper-carriage and extending freely over the same, so that the space between the knife and the carriage be accessible from one end of the knife and that the paper caribe slipped on the carriage in the direction parallel to the knife, substantially as described and specified.

In a paper-cutter, the combination of a stationary knife having an oblique position with a carriage or slide which has an oblique table to receive the paper to be cut,and which is moved horizontally against the knife, substantially as described and specified.

3. The frame (Figs. 6 to l0) ofa paper-cut` ting machine having the following three distinct parts, viz: first, a bed, lf, provided at its upper face with ways for a carriage,2,upon which the paper to be cnt is placed, to slide on, secondly, a vertical column-like part, lg, arising at one end of the bed, and, thirdly, an arm, 1 l1., to which the knife is to be fastened projecting from the column-like part, extending over the bed, and having such form and position that when the knife is fastened to it the edge of the knife will be in or ne'ar and parallel to the vertical plane passing through the longitudinal center line between the ways on the bed,substautially as drawn, and for the purpose specified.

4. In a paper-cutter with one stationary knife, against which the paper is moved in order to be cut, the gallow-frame 13, having guides'for the paper-clamping bar 14 to slide in, being iirmly united at its inner end with the paper-carriage 2, extending parallel tov the knife, forming a gap, with the carriage, into which the paper can be slipped parallel to the knife, and being provided at its outer end with the swiveling bar 50,substantially as described and specified.

IOO

IIO

IIS

5. In a paper-cutting machine, a stationary knife, 6, and a reciprocating sliding carriage, 2, provided with a paper-clamp, in combina tion with the described mechanism for moving the carriage with the paper to and from the knife, consisting of the main or operating shaft 27, journaled in the frame ofthe machine, the crank 28,fastened to one end of the shaft 27, the crank-pin 29, the Wrist-pin 32, and the conneetingrod 3l, jointed at one end by means of the pin 29 to the crank 28 and at the other end by means of the Wrist-pin 32 to the paper-carriage 2,substantially as shown and described.

6. In a paper-cutting machine. the combination,with a stationary knife, 6, a reciprocate ing carriage, 2, upon which the paper to be eut is placed, and mechanism, substantially as described, for moving the carriage 2 with the paper to and from the knife, of the device for regulating the position of the paper-carriage 2 relatively to the knife 6,comprising the wrist-pin block 33,the adjusting-screw 3.4,and the bolt 35, the block 33, to which the Wrist pin 32 is attached, being guided in a groove in the carriage 2, and its position relatively to the carriage 2 being,` adjustable in the direction in which the carriage n1ovcs,lhc screw 34 being journaled in the paper-carriage 2, having parts to prevent it from moving longitudinally in relation to the carriage,and engaging a nut tapped in the block 33, and the bolt 35 serving to secure the block 33 to the carriage 2 when adjusted, substantially as set forth.

7. In a paper-cutting machine, a stationary knife, 6, a reciprocating paper-carriage,2,and mechanism,substantially as described, for 1noving the carriage 2 with the paper to and from the knife, in combination with the device for Starting and automatically disengaging the motion of the paper-carriage 2, comprising a clutch on the driving-shaft of' the machine,the upright rock-shaft 46, the arms 45 and 49 on this rock-shaft, the arm 37,vibratiug on a stationary pivot, 38, the rod 40, connecting the arms 45 and 37, the spring on the rod 40, the adjustable pin 41, and the trigger-arm 42,piv oted to the carriage 2, the said parts being arranged and operating substantiall y as set forth.

HENRY BARTH. ERNST LIETZE. Vitnesses:

JOSEPH T. HARRISON, Ro'T. C. GEORGE.