US2198732A - Device for the automatic partition in varying dimensions, for advancing the reams of paper in paper-cutting machines - Google Patents

Description

April 30, 1940. E. LANGENHAGEN 2.198.732

DEVICE FOR THE AUTOMATIC PARTITION IN VARYING DIMENSIONS, FOR ADVANGING THE REAMS OF PAPER IN PAPER-CUTTING MACHINES April 30, `1940- f E. LANGENHAGEN 2,198,732

DEVICE FOR THE AUTOMATIC PARTITION IN VARYING DIMENSIONS, FOR ADVANCING THE REAMS OF PAPER IN PAPER-CUTTING MACHINES Filed May 13, 1939 2 Sheets-Sheet 2 4 N l L [nue/ziale Emile Llggenluggell 37 fformy;

Patented Apr. 30, 1940` anni PATENT oFFicE DEVICE FOR THE` AUTOMATIC PARTITION IN VARYING DIMENSIONS, FOR ADVANC- ING THE `HEARTS a OF )PAPER IN PAPER- CUTTING MACHINES a Emile Langenhagen, Roubaix,` France Application May 13, 1939, Serial No. 273,572

In France August 26, 1938 Claims. (Cl. 164-59) The `present inventionrelates to a device for the automaticpartition, in varying dimensions, a for the advancingcf the reams oi paper in the "paper-cutting machine. j f

In thepaper-cutting machines, to which the invention refers, theream `of paper to be cut is laid `flat on the table `of the machine, and is pushed.` forward by means of `a mobile push# mechanism, controlled so as to bring this ream under the knife of the machine, and in the exact position required for` cutting ,in` the dimensions required. A" n j According. to the invention; this push-mechanism, intermittently displaced at each rotation 151 oi an eccentric-plate driven from the "motor, is combined with a devicegfor controlling the i dimensionsoithe sections, and, according to V one of1 the essential characteristics, the forward `movements of this push-mechanism `are syn-` fii chronized with themovements of this controlling device.. "This latter `consistsiof an horizontal drum" perpendicular Vto the blade `of the paper` cutter; it carries,` distributed over its circumferf ence,\means forreceivingrand retaining, in any 25 desired position over the length of ,this drum, a projecting devices vor dogs, which according to i the angular positiony of` the drum, come by turns andfplace themselves in the trajectory of pro-a` `jecting headsxed to" the `upper side of a branch',

*19 of the .ipush-mech'anismtmounted mobile on the table, exactlyinthe artial. vertical plane of the drum. i v

The generabmechanism of control and `syn-- chronization is such that,.the bladeof the paper? 25 l`cut`ter having descended to the tablel levelicut- `ting'1n`o`v'en`1ent),athe said drum rotates, `during theupward movement of the blade, `the angle a being controllable, sacaste `brings. `newdog to v its inieriorparhin the axialvertical plane;` after ,(ywhich, the pressure `mechanisrnmoves forward,`

`pushing the ream of paper in front of ity, until 1 itshead strikes againstthe `said dog, which ar-` `restsfthe, ,courseof the pressure mechanism, the

` `papercutter"s ,blade being then lowered (cutting i tymovementh The same cycle .of` operations is.

firepeated eachtime withgamplitudes of the moves mentof the push mechanism corresponding to the"distance`included `between two vdogswlfiich have" been brought to astop successively.`

o One` willunderstandthat by a regulated controlglof thedisposition of the dogs on the drum,

.i combinedwith a controllable amplitude of each movement of rotation ofthe drum, one can dis-- t successive cuttings, `of equal or diiferenttdimenpose -the machine so `as to carry out a series of sions, `cuttings which are automatically carried out, in the required succession, just as long as the machine is in operation. i i

In the annexed drawing:

Fig. l shows `a side view of the machine, show- 5, i

ing more specially the devices of interest of `the invention, a f j i j Fig. 2 `is `a iront view, following the `arrow of Fig.` 1,

Fig. 3 is the side view, on` a larger scale, 10` i t Fig.` 4 is a front view of one of the stops.

The `machine consists of a foundation "frame 3ft-ttf `carrying the control devices and the horizontal table 35 on which moves from back to front and from front to backfthe push mechanism 36. 'This Vpush mechanism is formed of a rigid cross-piece transversal to the table; in front oi it, it pushes towards the front of the machine, the ream of paper which is laid flat on the table,` n so as to bring it under the cutting-line, beneath 2,0 the cutting-blade 37 supported by an horizontal arm `38, guided in thesuperior frame 39. `This `arm 33` is supported at either extremity by av connectingrod tti which is, articulated atthe `top to an eye lli pivoting on the arm 38, and at` the lower end; it is connected with another eye t2 pivoting onja cam d3 worked from themotor by intermediates not shown. This disposition is known inypapencutting machines; at each revolution of the cami the blade 3i performs 3,0m i `a downwards movement right to the table 35 and an upward movement. ,a

The pushtmechanism iiii is;` part and parcel of a posterior horizontal arm l,resting on the table,

and which is perpendicular tothepush bar 36; 35`

this arm iis -tted` at its upper edge with two heads 2 and` which stand out, but which can be made to disappear bytmeans of a thrust exer-` j cised ontheir superior edge from the front towards `the back, and whichare brought `back `to 40 their outstanding position by means of a spring which is not shown. i i i li is anhorizontal drum, supported at either extremity 4by journals so` as t0 be at a small dis- `tance above theheads E and 3 which are in the 45 axial vertical plane of tlnsdrum.`l The cylindri-` cal surface of this drum possesses a certain numberl of radial grooves t which extend over the whole length ofthe drum, yand which are'uniformly distributed; these grooves (Fig. 4) havea 50` bottom whichis `wider than their entrance. These grooves are graduated, over theirentire length, in metrical measures. They receive dogs 5 `shaped in any convenient manner; each dog is, forinstance,a little bloc of metal supported by 55 an upper bolt I the head of which engages itself in the wide part of the groove 4', a bolt 'I' serves to fix the dog in place in its groove, a micrometric screw 8, with a nut 9, serves for the final precise regulating of `the position of the dog thanks to a `millimetric graduation carried by each dog. The drum is controlled, as will'be explained, so as to turn on each time for an angle equal to theangular distance between 2, 3, ,4...

ratchet wheel I2 in one direction, leaving it free in the other direction; the course of this pawl is controlled by a link I4 (FigQZ) so as to cause the pawl I2 to move, one, two, three, or more teeth at a time. The link I4 is pivoted from the lever I5 of the divider I6 by means of the conical pinions I'I and I8. The divider itself is given an alternativeA rotary movement in both directions, as is known, .by means of the arm 44 resting on a terminal bearing 45, on the side of the cam 43 (full lines Fig. 1); this arm is fixed on the secondary shaft 4G which transmits its oscillations to the divider by known means, not shown. At eachturn of the cam 43, the-drum 4 will therefore perform a revolution of the required amplitude, whereas, as stated, the paper-cutting blade performs a complete movement of rising and of stroke; the control is such that the drum begins to revolve when the blade of the papercutter reaches the level of the table and. finishes when the blade has risen about 25 mm. During this revolution, the pressure mechanism and consequently the ream of paper are immobilised.

The-secondary shaft I Il is fitted at its extremity with a hand wheel I9 by means of which the workman can bring the drum 4 back to its starting point at will and rapidly. A plate 20 graduated in as many divisions as there are' grooves in the drum, is fixed on the shaft I and allows, by means of an index, to know at any moment the number of the dog which is going to stop the pressure mechanism I at a determined position.

, One'will understand that the drums revolutions can be suspended at will, by lifting the pawl I3 momentarily.

The push mechanism I is advanced .bymechanical devices not shown in detail4 because they are known and used in such mechanisms. These yknown devices consist` in the wheel 2I which controls by means of a belt22 the bearings 23. The latter, omingin contact with the groovedpulleys 24, cause these to revolve and their shaft determinates the advance of the push l mechanism I up to'the moment when the head 2 which constitutes one of the new devices of the invention, comes up against the dog 5 which has been broughtin its trajectory. At this moment,

there is a slight shock and the push mechanism` contact 21 is actuated by the lever 28, that is to n say when the bearing 29 of this lever enters the recess 30 of the crank plate 3| shown by dotted lines in Fig. 1, and which is part lof the cam 43. Each head 2 3 carries also a part 2-3 projecting out on the front facing, by means of the action of a spring; when one'4 of Vthese heads enters in contact with a dog 5, this part 2'-3 is pushed back in the head and thus cuts the electric circuit `of the electro-magnet 25 with which it is connected by any appropriate means easyy to be conceived. The lock 32 allows the automatic movement of the push mechanism to be suspended, which, can then be mechanically displaced from the lever 33, as is known. This stoppage of the automatic advance may be necessary for the controlling of placing of the dogs 5 on the drum 4, or for checking the varying dimensions obtained in the cutting, without having to proceed to a trial cutting. In such a case, it is sufficient to act alternatively `on the control wheel I9 of the drum 4 and on the lever 33; by lowering each time the machines paper-press,l one will be able to check the agreement ofthe different data of the ream to be divided and of the cutting-line. I

The number of the dogs 5 which may be fixed on the drum 4 is only limited by the space required for fixing them; they'are narrow enough to allow combinations fora large number of cuttings; as they can be fixed on any point of the drum, and in any number whatever, the value of the rcutting-dimensions is Very variable."

When the ream of paper only occupies half the depth of the table, the drum 4 is longrenough to place a series of dogs towardsthe back, and( thus to yallow a series of cuttings in the other direction of the ream. 'I'he front head 2 can also be used for kcuttings in one direction. of the ream whereas the back head 3 could be used for cuttings in the other direction. The placing of the dogs on the drum would in `this case be made by takinginto account the dimensions of theream tobe divided in each of itsY drections'vand of the dimensions of each cutting.

When the reams to be dimensions, the placing of the seriesof dogs is performed on the drum 4, leaving a groove free between each successive dog-` The length ofthe drum being thus occupied by a firstsseries, the second series will be fixed in the'grooves which have been left free taking thedrum from the front towards the rear. These two series of dogs mixed up'amongst each other will also allow-the reams to`be cut in both directionswith different dimensions.

divided are of largecular displacement oi.v two grooves after each i cutting. If the series of dogs kwere `place'dat` every `third groove ,on theldvrum, kitV would be necessary to cause the drumtomake a circular displacement equal to threeg'grooves reach time,K4 I so that the` drum should always find thel dog of '65 allows of avery great the series foreseen.

This mechanical system number of combinations .fonthe most Varied applications.l On the other hand, the dogs being independent, each one in itsv respective series, they can be regulated independently without infiuencing the regulatingof' the otherdogs. `1,

Having now fully describedmy said invention,

what I claim and desire to secure by Letters Patent, is: l 4 l l. In a paper-cutting machine of the described type, a push mechanism to advance the ream of l l ceiving projecting dogs Whose positions and repaper on the table towards the cutting-line,` a` posterior horizontal rigid bar, perpendicular to` this push mechanism and being `part `of it, a pro- `jecting head carried bythe superior edge` of this bar, an horizontal revolving drum, the moveo ment of which is intermittent and controlled,

above this bar and the axis of which lies in the vertical plane of this bar, means over the entire cylindrical surface of this drum, capable of reciprocal distances are determined according to @the dimensions of the cuttings to be carried out successively, a reciprocating cutter for cutting the paper advanced by the` push mechanism, `and l means for periodically operating `the cutter for cutting purposes and a means to cause this drum l torevolve after each cutting at a predetermined angle so as to bring a new dog each time in the trajectory of the head of the saidbar.

`2. In a paper-cutting ,machine of the described type, a push mechanism to advance the ream of paper on the table `towards the cuttingline, a posterior horizontal rigid bar, perpendicular to this push mechanism and being part of it, a projecting head carried Vby the upper edge of this bar, an horizontal revolving drum moving intermittently and controlled, above this bar and the axis of which lies in the vertical plane of this bar, longitudinal grooves over `the 4entire length of this drum, `to receive and iix,

at any separations and according to any dispositions, `outstanding dogs, ,the shaft of this drum `@bearing a ratchet Wheel `the teeth of which are equal in number to that of `the grooves, and of `a `pawl working this wheel in one direction, this pavvl having a regulableamplitude of movement, p and being put in control movementas soon as t the cutting has been performed, and before the advance of the push mechanism, a reciprocating `cutter operating on the' paper at `the cutting line,

` and means for reciprocating the cutter.

3. In a machine for `cutting reams of paper,

a table to receive and support lthe paper, a push mechanism, means for operating the push mech- `2? anism to move the paper toward and into a cutting line, a cutter for cutting thepaperiat the cutting line, and means for reciprocating the cutter into and from the cutting line, and a control mechanism for limiting the movement of the push mechanism for selecting the length of papel' `to be cut, said control mechanism including a member mounted for rotation, dogs mounted for "sliding movement in the member, means for lixing the dogs at predetermined positions in the member both longitudinally and "peripherally, `means for adjusting 'the member so asto dispose aselected dog in line with the push mechanism,

and means on the push mechanism to engage the positioned dog to limit the operative movement of the push mechanism.

f1'. `In a machine for cuttingreams of paper,`

a table to receive and support the paper,` a push l mechanism, means'for operating the push mechthe movement of theV push mechanism in its effect on the paper, said control mechanism including a cylindrical body mounted for rotationV in a ixed plane, and formed with a series of longitudinally arranged channels, `dogs mounted `for movement longitudinally ofany one or `more of said channels, means for fixing the dogs 'in predetermined position in the length of the chan-` nel, and means carried by the push mechanism to engage a selected dog to limit the movement of the push mechanism in its adjustment of the paper.

5. A construction as defined in claimfl, in-

cluding means for selectively rotating the cylindrical body to position any oneof the dogs thereon in cooperative alignment Withlthe movement of the push mechanism.

LANGENHAGEN.

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