US1937175A

US1937175A - Paper cutting machine

Info

Publication number: US1937175A
Application number: US586713A
Authority: US
Inventors: Ralph S Tyler
Original assignee: Chandler and Price Co
Current assignee: Chandler and Price Co
Priority date: 1932-01-15
Filing date: 1932-01-15
Publication date: 1933-11-28
Anticipated expiration: 1950-11-28

Description

Nov. 28, 1933. R. s. TYLER PAPER CUTTING MACHINE Filed Jan. 15, 1932 3 Sheets-Sheet l I N V EN TOR. Har /1 a: 1w

A TTO Nov. 28, 1933. R TYLER 1,937,175

PAPER CUTTING MACHINE Filed Jan. 15, 1952 3 Sheets-Sheet 2 I N V EN TOR. P0 17); J? 73/2 ATTORN 5 Sheets-Sheet 3 R. s. TYLER PAPER CUTT ING MACHINE Filed Jan. 15, 1932 M Wm Mr M m k m N T J 7 a 1m F 9 w w 5 2 @Q m O@ 30 used.

Patented Nov. 28, 1933 D-I ST TES PATENT," OFFICE PAPER CUTTING MACHINE v Ralph S. Tyler, Cleveland Heights, Ohio,- assignorto The Chandler & Price Company, Cleveland, Ohio, a corporation of Ohio f Application January 1932." Serial No. 586,713 ,6CIaims. (01. 164-59),

This invention relates generally to paper cutting machines. A primary object of .theinven' tion is -toprovide anovel indexing device for such machines. whereby .the back gauge. of the .5 machine may be easily and. quickly moved through predetermined uniform distances, as .whenfi'cutting packs of paper or'cards of uniform width.

Another object of the invention is to-provide- 10 means whereby a substantially solid frontface may be presented by the back gauge toa stack of paper in abutment with-the gauge, and whereby small pieces of paper are prevented from entering between the. fingersof. the gauges usually pro vided in machines of the 'type'herein described;

v..Another.object of the invention isto provide means wherebythe slot in the table, in which "the back gauge slides is normally covered so that the entrance into the slot of small packs of paper,

.. such as tickets, isprevented.

.To the accomplishment of the foregoing and related ends, s'aid invention,"then, consists of the means hereinafter fully described and particularly pointed out in the claims; the annexed 5 drawings and the following description setting forth in detail certain mechanism embodying the invention; such disclosed means constituting, however, but one of various mechanical forms in which theprinciple of the invention may be In said annexed drawings: I Fig. 1 is a front elevation of the upper. portion of a paper cutting machine embodying the novel features of my invention; Fig.2 is a side'eleva "tion of'thepapercutting machine; Fig. 3 is a plan View "of the *cutting'machinewith certain parts omitted for clearn'ess' in" illustrating'the novel features of the invention; Fig. e is a longitudinal cross-section through the table of the-machine;

Fig. 5 is 'afragmentary front view of the indexing device; Fig. 6 is-a longitudinal cross-sectional view of the indexing device and associated elements; Fig. '7 is a cross-sectional view through the ratchet for operating the indexing device, taken on a plane indicated, by the line ,7'-7 of Fig. '6; and Fig. 8 shows [a modified form of the ratchet fcr operatingthe indexing device.

A paper cutting machine of a type now commonly used for cutting stacks of paper, cards, etc., includes a table 1' having secured to the sides thereof uprights 12, whose front faces form with the rearjfaoes of guidewayjbars 3, slideways for the knife bar 4, which carries the knife ,5. Side guides .6 may besecured to the table adjacent the front portion thereof.

by the knife. 5. The spaces between these fingers around freely rotatable sheaves .lfia'nd 17.jourthe gauge, and which is looped about horizontally Positioned on the rear portion of the table is a back gauge 7'.having a multiplicity of transverselyspaced fingers 8, the front faces of which form an abutment for a stock of paper to be cut are sufficiently wide to permit the entrance of small pieces of paper which become wedged therein and must be: frequently removed. In order to prevent the entrance ofpaper into the recesses between the fingers 8 I provide an auxiliary 55 gauge 9 having laterally spaced fingers 10, and

which .ismounted'v for pivotal movement about a pin 11, journalled in bearings 12 forming an integral part of the gauge 7. The gauge9, when not in use, occupiesthe portion shown in Figs. 2 7 and 4. ,When it is desired to use the gauge 9,, it is swung through an angle of 180 to the position shown in Fig.3, wherein the fingers 10 thereof rest on the table 1 and occupy the spaces between the fingers 8, thereby preventing the entrance of paper into the recesses. between said fingers.

In this position, the front faces o'fthe fingers 10 are flush with the front, faces of the fingers 8, and form therewith a substantially solid surface .for therear face of "the stock of paper to be cut.

. The gauge 7 is secured toa guide bar 13 which is adapted to be longitudinally. moved in a slot 14 in the table lto thereby move the. gauge to any desired. position. In order to prevent the entrance of. small.packs of paper, such as tickets, into the portion of the slot 14 in front of the gauge, I provide a tape 15 of metal or other suitable material, the ends of whiehare vsuitably'secured to the guide bar 13am which is'l'ooped .90 nalled in the table 1. The tape 15 is of a width to substantially cover the slot '14 in the table and is flush with the upper surface of the table-s0 that it prevents theentrance of paper into the slot, but does not interfere with the movement of the stack of paper on the table. It will be readily understood, by reference to Fig. 4, that longitudinal movement of the back gauge causes the tape 15 'to move in unison therewith, so that the entire portion of the slot 14 in front of the gauge is. always covered by'the tape.

For the'purpose of moving .theback gauge 7 longitudinally of the machine, I provide a chain 18, the ends of which are suitably secured to disposed sprockets 19 and 20. Thesprocket 19 is journalled in a bearing bracket 21 at the rear of' the table, while thesprocket 20 is rigidly secured .to a rotatable vertically extending shaft 22, disposed beneath the table at the .front portion ,in Fig; 5, the ratchet member 36' is moved there- Ishaft.

which is journalled in bearings forming a part of a bracket 26, which is in turn secured to the table 1, as by bolts 27. The bracket is also provided with a guide 28 and with spaced bosses 29 in which is journalled a' rotatable worm 30 operable by a hand lever 31. The worm 30 meshes with a worm gear 32, mounted on the end of the shaft 24, and having one side thereof extended to form an abutment or stop 33. The guide 28 extends through a recess in the gear 32 and holds the gear in position in the shaft 24'. The position of the stop 33 may be varied by rotating the lever '31, and when in adjusted position, thestop may be locked by means :of a set screw 34 extending through the gear 32 and into abutment with the guide 28.

Mounted on the shaft 24 between the bearings 25 are cooperating

ratchet members

35 and 36, the member 35 being keyed to the shaft, and the member 36 being oscillatable with respect to the As shown in Figs. 6 and '7, the member 35 has an annular recess therein, into which the annular boss 37 of the member 36 extends. The boss 3'7 has portions of its periphery cut away to provide inclined surfaces 38, between which and the outer face of the recess in member 35 are disposed rollers 39. Keyed to the member 36 is an operating lever 40, which has a laterally extending stop 41 and a boss 42, which is adapted to abut a micrometer screw43. Screw 43 is secured to a bracket 44 attached to the side of the table as by bolts 45 I r Spaced from the lever 40, as by a collar 46, is a bevel gear 4'? which is keyed to the shaft 24 and is in mesh with a bevel pinion 48, keyed to a shaft 49, which is journalled in the bracket 26. Keyed to the shaft 49 adjacent the other end thereof'is a plug 50, to which is secured a pin 51, which is normally in engagement" with a bevel pinion 52, in mesh with ajbevel gear 53, which is in turn secured tothe vertically extending shaft'22. a

The operation of the indexing mechanism is briefly as follows:

When the lever 40 is moved to the left, as viewed with and turns free of the member 35 until the stop 41 abuts the stop33. The lever 40 is then moved to the right until the boss 42 thereof strikes the head of the micrometer screw 43, and during this movement the rollers 39 are wedgedbetween the inclined surfaces '38 of the ratchet member 3'? and the outer face of therecess in member 35, thereby causing the shaft'24 to rotate'through a predetermined arc and rotate the bevelgear 53.

.This causes the back gauge 7 to move forward a distance governed by the arc of movement of the gear 53. By varying the position of the stop 33 the extent of movement of the back gauge may be varied, and close adjustment of this movement may be effected by means of the micrometer screw 43. When it is desired to disengagethe indexing mechanism, this may be done by simply sliding the plug 50 rearwardly on the shaft 49 until the pin 51 is clear of engagement with the pinion 52. The position of the back gauge may then be changed by manipulation of the hand wheel 23.

In Fig. 8 is shown a modification of the ratchet mechanism, in which a ratchet wheel 54, which is keyed to the shaft 55, is adapted to be rotated through a predetermined are by means of a pawl 56, pivotally secured to the lever 57.

It should be noted that by the use of the rollerratchet indexing mechanism, it is possible to set the mechanism to take a space from zero up to the maximum range of the mechanism, whereas the minimum obtainable spacing with the pawl and ratchet indexing mechanism shown in Fig. 8 is determined by the space between successive teeth of the ratchet wheel 54.

Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards the mechanism herein disclosed, provided the means stated by any of the following claims or the equivalent of such stated means be employed.

I therefore particularly point. out and distinctly claim as my invention:'- P

1. In combination with a paper cutting machine or the like, a back gauge for said machine having spaced fingers providing a gauging surface, and an auxiliary gauge having a plurality of spaced fingers, adapted to extend into the spaces between said first-named fingers and providing a gauging surface flush with said firstnamed gauging surface.

2. In combination with a paper cutting machine or the like, a back gauge for. said machine having spaced fingers providing a gauging surface and an auxiliary gauge secured to said back gauge having spaced fingers adapted to extend into the spaces between the fingers of said back gauge.

3. In combination with a paper cutting machine or the like, a back gauge for said machine having spaced fingers providing a gauging surface, and an auxiliary gauge pivotally secured to said back gauge and having a plurality of spaced fingers adapted to be moved into the spaces between the fingers of said backgauge and providing a gauging surface flush with said first named gauging surface.

4. In combination with a paper cutting machine or the like, a back gauge for said machine having spaced fingers providing a gauging surface, an auxiliary gauge/secured to said back gauge having spaced fingers adapted to extend into the spaces between the fingers of said back gauge and providing. a gauging surface flush.

5. In a paper cutting machine or the like, a

back gauge, mechanism for advancing said gauge along the machine, a lever for operating said mechanism, stops for determining the extent of movement 'of said lever, and worm and gear means for adjusting at least. one of said stops.

6. In a paper cutting machine or thelike, a

back gauge, mechanism for advancing said gauge along the machine, a lever for operating said mechanism, a stop for determining the extent of movement of said lever in one direction, worm and gear means for adjusting said stop, and a micrometer screw for adjustaby determining the extent of movement of the lever in the opposite direction. v n

RALPH S. TYLER.