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Aug. 13, 1946. L. A. WHITTAKER- :arr/lu.- - 2,405.86@ CUTTING AND CREAS’ING PRESS Filedv March 8, 1944 ' 6 Shee't-s-Sheet 1 ,m ~ . Aer/d' y. nv Aug, 13, 194.6.A l.. A. WHITTAKERET AL 2,405,868 ` v'CUTTING AND CREASING ‘PRESS ' Filed Marone, 1944 WM.. 6 Sheets-Sheet 2 v Aug. 13, 1946. L. A. wHl‘rTAKER ET Al. ' CUTTING AND CREASING PRESS Filed March v8, 1944 2,405,868 . ' 6 sheets-sheet 4 U9. ` @Méfi Aug. 13,> 1946. L. A. WHITTAKER -laf/M_ 2,405,868 CUTTING AND CREASING PRESS Filed Marche, 1944 l @sheets-sheet 5 Aug- 13, 1946. L. A. WHITTAKER ET AL- 2,405,868 CUTTING AND cREAsING- PRESS Filed March s, 1944 s sheets-sheet s Patented Àug. i3, i946 2,465,868 UNi'rsD STATES f PATENT OFFICE 2,405,868 CUTTING AND CREASING PRESS Lloyd A. Whittaker and Harold F. Peterson, _ Franklin, Mass., assig'nors to Thomson-Na tional Press Co., Inc., Franklin, Mass., a cor poration of Massachusetts ‘ Application March 8, 1944, Serial No. 525,618 ' 1 11 Claims. (ci. 164-19) 2 . The present invention relates to improvements in cutting and creasing presses for the purpose of cutting and creasing such flat materials as paper, impregnated papers, cardboards, corrugated card material to be fed in readily at one end and to be taken out at the other end during the move ment of the arcuate table back to its initial posi tion. , - board, composition materials, plastics, fabrics, A further advantage of the present invention is wood and plywood, rubber and even soft metal that essentially there is only one moving part materials. ' as the table does both the reciprocation and the Cutting and creasing presses and likewise >`other' oscillation in the cutting and creasing operation. types of presses are as a rule of two general forms; Other and further advantages of the present one, the rotary cylindrical press, and two, the 10 invention will be more readily understood in con flat bed press. nection with the speciñcation annexed hereto de In the flat bed press the cutting and creasing scribing the invention in connection with the die is set into the underneath side of a ñat head drawings showing an embodiment of the same and the sheet is placed on a flat table, the head in which: and table being brought together over their whole 15 Figur@ 1 shows a side View oi the cutting and surface, cutting or creasing the whole sheet which creasing press with portions shown in dotted posi may have been placed on the table at the same tion. . time. Very large machines of this type have been Figure 2 shows another side view of the inven built of such a size as to take a sheet 50" x 80” tion with po-rtions shown in fragmentary sections with the result that very great pressure is neces 20 and elements in a different position than shown sary between the head and the table to force the in Figure 1. cutting and creasing dies into or through the ma Figure 3 shows a section through the machine terials, especially for such materials which ar with the center broken away taken on the line heavy and hard. ' In the rotary press the material is fed over a 25 3-3 of Figure 2. Y Figure 4 shows a section substantially similar to Figure 3 through a portion of the machine. Figure 5 shows an end view of the machine large rotary cylinder and the die or creasing forms set into a fiat bed which reciprocates back and forth, in one direction coming in contact with viewed from the right of Figures l and 2. the Lsheet which is wrapped around the cylinder - Figure 6 shows a detail ofthe top pOrtion of the and pressing and creasing it, and in the other 30 machine with the head inran extended position. direction dropping from contact with the cylin Figures 7, 8 and 9 show enlarged details. der in preparation for cutting and creasing the In theñgures, I is the frame which is provided next sheet. In the cylindrical cutting and creas with two large side plates 2 and 3 which may ing press the ñat plate is always tangential to be of cast metal or other suitable material. The the cylinder in the cutting and creasing opera plates 2 and 3 have top finished bearing surfaces tion so that only one line of cutting dies, trans Il and 5 with recessed tracks or grooves 6 and 1 verse of the platen, exerts pressure at. a time in which are positioned two groups of rollers 8 on the sheet to be died out, the cylinder in effect and 9 respectively, journalled in side bars, Io and rolling over the platen plate. II for the rollers 8, and I2 and I3 for the rollers The present invention provides a number of ad 9. These sets of rollers run freely on the frame vantages over the cylindrical press in addition to and support the top head or die holder I4 which this feature of the cylindrical press, that only a is provided with two extending flanges I5 and I6 tangential portion of the platen cutter meets the resting or bearing on the rollers 8 and S respec table so that the pressure is not that which would be necessary to cut and crease a whole sheet at 45 tively. once. faces I'I and I8 bearing against corresponding 'I'he head I4 is also provided with bearing sur In the present invention the head holding the cutting and creasing dies is stationary and the surfaces I9 and 20 on the arcuate table 2l which will be described in more detail later. table which is arcuate is both oscillated and re The head Ill has formed as an integral part ciprocated in the cutting and creasing operation. 50 of it a flat plate 22 in which the cuttingV or creas This permits the design of a simple motion which ing dies 23 are set. These are of the usual con at all times is readily balanced in the machine struction and are held in place by a chase 24 and makes it unnecessary for the head to_slide clamping the cutting and creasing dies in place. to a stop at the end of each oscillation. Further, The head Ill is ribbed and arched for support the oscillation of the arcuate table permits the 55 and while it is adjustable on the side supports 2,405,868 of the frame, in its use and operation it is clamped in place. This is accomplished by means of angu lar, supporting and clamping brackets 25 and i 25 which are bolted to the side portions of the frame 2 and 3 by means of a series or" bolts 2l and 28 respectively. Wedging clamping bars 29 and Si) recessed slightly in the inwardly extend ing flanges of the brackets 25 and 26 serve to clamp the head rigidly in position after its posi tion has once been adjusted. These wedges 29 and 35 may be simultaneously operated ’by means of the operating bar 3l (see Figure 5) which will be presently described. f The head i4 on one side ¿is provided with 4a rack 32 which is fastened to the side edge of the flange i5. Meshing with the rack v32 is a pinion 33 which is journalled in a forked bearing' Y35’ which is fastened to the side bracket 25. The pinion 33 is operated by means of the handle 34 which turns -a crank arm 35 rotating the shaft Á3'6 'onïwhich the-pinion 33 is mounted. By turning the "crank arm 34, therefore, the head may be extended from the position shown in Figure 2 -to the position shown in Figure 6 `or in any .inter mediate position. A plurality of 'end ‘stops 31 4 manner. The taking off may also be done mari ually or automatically by methods common in the art. The arcuate table 2| may be made of cast or other metal material and is freely supported by a shaft 52 about which it is free to turn. The arcuate table 2i may navega number of support ing brackets, as shown in Figures 3 and 5. The shaft 52 is itself journalled in carriages 53 and 54 which are slidable on rollers in slots in the side portions 2 and 3 of the main frame. This construction is shown in Figures 1, 2 and 5 and 10. The carriages 53 and 54 which slide in slots 55 and 55 in the frames 2 and 3 furnish the 4bearings for the extensions 51 and 58 of the -shaiït ¿52 in lsuch `a manner that the shaft 52 is eccentrically positioned with respect to these eX tensions 51 and 58. In the position shown in Fig ure 3, the shaft 52 is in its highest position. The extension 57 at the left of Figure 3 is supported by. a toggle joint support which lowers the shaft 52 when it `is rotated eccentrically about its ex tensions 51 and l5B. This is accomplished by `means vof the crank arm 59 in which the end of the shaft 5l extends. The Abell vcrank arm 59 has vpivoted to its free end a bell crank lever 60 which is pivoted at the fulcrum 9i and »linked by and ~38 are provided for limiting the motion 'of means of the pivot 62 to the crank arm 63 which the head beyond the end of the frame. is >¿ìou’rr'ialled to the shaft y(ill >of one of the rollers The wedging previously briefly described ‘is con 65 of `one bearing in the sliding carriage for the trolled by means of the operating bar 3l. This bar >at each side 'of the frame is `provided with 30 shaft 52. In the position shown in Figure 10, the farm 66 of the bell `crank lever 65 is extended crank arms 39 and 49 to which the shafts ¿I vertically 'downward and will remain in Athis po land 42 are attached. These shafts are journalled ïsition until the arcuate Ytable has been carried in the top portions 43 and 44 of the side brackets to one ‘end of the frame, ‘the .left end as viewed -25 ‘and 2B vand are provided at their ends with in Figure 1. It will thereupon strike the stop ‘eccentrically positioned ïpin's 45a`nd 45 operating 55.’ and be thrown `rto the 'right whereupon the in transverse slots 4T and 481 in the wedges 29 crank 59 ¿will be vmoved to the right, as viewed in and 3B. These wedges are tapered'as-seen -iïn Fig Figure ‘10, and the shaft 52 *will thereby be ure 6. dropped. The crank 59 and the vextension 5l' are The head llli is l?noved to the left, Yas viewed in Figure 6, in order to permit working ¿room for 40 îtie'd ¿together by a Íkey-way 65 or by any other suitable means. This 'dropping `of lthe lshaft .52 Vthe operator to set «in place the 'chase and cut will îp‘r'ovide clearance between the arcuate table ¿ting >and creasing dies without being troubled by and the cutting and creasing head. the arcuate table 2l. When this ¿has Ybeen ~ac-As ~shown ’inFigures »1 and 2, the arcuate table -corr'rplished ‘and when the-arcuate -'table has also ‘ lis îprovided with '5a sector gear 61 which engages lbeen `fully Vprepared or -“made ready” as Awill be ¿affixed »rack Sil-attached to the'sîde »frame 2. This explained, the head is brought back to position, iisïshown inFi'gures 3 and 4. The rack 6'8 »is ‘iiXed the position -shown'in Figure -1 or Figure 2 and 'tothe yframe in a permanent position -:and 'not Vis lockediniits `proper place. Thisi's accomplished 'to »the head i4 since’the `hea-d must -b'e adjusted lby forcing the wedge to the left,v as viewed in Figure "6. by pulling on the -bar 3l. The'wedges ' `for removal of the dies and Iforacces’s to ïthe lar fcu'ate table. The arcuate -ït'able ¿22h #as 'has been >§29 land 3S are thereby »forced in between the flanges l5 and i6 of the head andthe íianges _43 and vlill of the‘brackets 25 and 2S thereby »firm ly tightening the head in its position. The head is, of course, swung -in or out >to the -p'roper po siticn by means 'of the "crank 34 before the tight lexplained above, has both an oscillating and 're ciprocating motion. «For rthis ‘purpose there -is -provided a harmonic fdr-ive fshown »in dotted `po sition in 'Figures 1 and '-2. This includes -'a drive lshaft'iiß which may be-‘dri-ven `by a'motor through ening of the wedge is accomplished. ~a reduction gear with the initial `driving arm or The cutting and creasing dies may be set in the head in any well known manner. This is com isfattachedto the-’shaft52 in lthecollar orbearing monly’done by setting theknife edges‘as, for in stance, 69, Figure 3, in a wooden or other sup porting piece and surrounding it bvpîeces of Arub ber or cork 58 and 5! which serve to aid in eject ing the work after it hasbeen cutfor creased by the knife. The ‘material to be cut is fed onto the arcuate table ~2l. This mayîeither be done -by hand or the sheet may be fed automatically by a ‘feeding mechanism of any of the well known types. The feeding may be done frdmcn'e end andthe piece may be ‘taken off from the “same end or `-from the opposite end. yIn Figure 5 the "grippe'rs-Sil lare shown at sth'e'en‘d. of ‘the table. crank 10 linking with a second -cran'k -ïl which l2. The drive `>for ‘the shaft is preferably »at a «number ¿of -points Vthrough several «cranks and ~>bearings T2 and «13. ~By ¿means of this drive, the >shaft >52 and its supporting `carriages »53 and ¿5d which are mounted on the rollers 55 and 65’ are moved from one end of the slots 55 to the‘o'ther end of Ithe'slot with aïharmonic »motion with zero vvelocity at~eaohend of ~the slot. At the 'right end ’of the ’slot the >toggle -detent 565 'hits .against 'the ~`stop=65^and drops the shaft-52. Any other suit able means maybe used to’throw-out and in the I¿toggle- de'tent at the Íend of »the lmotion. As has 'been explained, the Yoïoïntílilied? motion ofïthe drive `‘ci‘arik-pulls »the arcuate îtable back to its initial ïpösitio'n ’where 'the "arm ‘55" of the 'bell >crank 1e and cam ata given position of the table in any 75 ver comes in Contact with the other stop ‘i4 which YThese frnay 'be Vmechanicallyïoperated =`by 'a >rod " 2,405,868 5 6 'raises the shaft 52 back in position where the eating motion, said last-named'means compris# arcuate table comes in contact with the head, the bearing flanges I'l, I8, I9 and 20 serving as a guide for the engagement of the table and the head. In the motion of the arcuate table, the sector gear 8'! meshes with the rack 68 so that'the ing a rack mounted in said frame and a sector gear mounted on said table and engaging there arcuate table oscillates or rotates on the shaft a shaft on which said table is pivoted, a carriage with. ` ` 4. In a cutting and creasing machine, a frame, a head mounted thereon, an arcuate sector table, movably supported with respect to said frame 52 at the same time that its axis is reciprocated for carrying said shaft, said carriage eccentrical back and forth beneath the head. In the arrangement shown in the present appli l0 ly supporting said shaft means for reciprocating cation, cutting and creasing takes place as the the shaft longitudinally of the head and frame, arcuate table (as viewed in Figures 1 and 2) has means inter-connecting the table and frame for its axis moved from the right to the left. In the oscillating the table during the reciprocating mo reverse motion the table' is disengaged from the tion, and means included in part in said carriage head to a degree such that no cutting or creasing for rotating said eccentrically mounted lshaft at takes place. \ the ends of the motion thereof to engage and dis engage said table from said head. It should be noted, however, that in this opera tion the sector gears 61 and the rack 68 are large v5. In a cutting and creasing machine, a frame and will continue to mesh even though the table having a bearing flange, a headïhaving a bearing has been dropped a considerable amount. This 20 flange slidably mounted on said frame, an elon insures that the cutting and creasing operation gated wedge, means for tightening said wedge be will be accurately repeated for each stroke. tween the frame and said head in the bearing One of the advantages of the present arrange flanges, an arcuate sector table having a shaft ment is that the arcuate table may be made clear upon which said sector table is freely journalled of the head by moving the head out from above 25 for supporting the same, means for reciprocating it. This permits the arcuate table to be “made the shaft longitudinally of the head and means ready” with considerable ease as the operator inter-connecting the table and frame for oscil has easy access to the arcuate table. lating the table during the reciprocating motion. The table is properly built up in the well known 6. In a cutting and creasing machine, a/frame, manner to the proper height by layers of paper 30 a head positioned thereon, means for sliding said or other materials after which the cover 8i) is head with respect to said frame comprising a drawn tautly over it and clamped in position by pinion mounted on one of said elements and a the clamp 8l. (See Figure 2.) rack on the other thereof, an arcuate sector table The press herein described may be made in any positioned and adapted to be in substantially tan desirable size but has a prime advantage in that gential contact with said head and having a it may be made in Very large sizes and operated supporting shaft upon which said sector table is at a rapid rate, more rapidly than has been ac freely rotatable, means for reciprocating the shaft complished with machines of the prior art of the longitudinally of the head and frame, means in flat bed type. ter-connecting the table and frame for oscillating It will readily be appreciated that modifications 40 the table during the reciprocating motion, and and changes may be made in the present con means co-operating with the head and the frame struction for automatic and manual operation for locking said head in position for normal op without radically departing from the spirit or eration. » scope of the present invention and we therefore 7. In a cutting and creasing machine, a frame claim as our invention: having guide channels in the sides thereof, a flat l. In a cutting and creasing machine, a frame, head, sliding bearing means supporting the head a head mounted thereon, an arcuate sector table in the guide channels, means for adjusting and positioned and adapted to be in substantially tan ñxing said head in a selected position along said gential contact with said head and having a sup sliding bearing, an arcuate sector table positioned porting shaft upon which said sector table is free and adapted to be in substantially tangential con ly rotatable and means providing a harmonic mo tact with said head and having a supporting shaft tion with substantially no velocity at the end of upon which said sector table is freely rotatable, the motion for reciprocating the shaft through a a sector gear carried concentrically by said sector given stroke. table, a rack fixedly positioned longitudinally 2. In a cutting and creasing machine, a frame, with respect to said head and adapted to mesh a> head slidably positioned on said frame, an arcu with said sector gear, 4and means for reciprocat ate sector table positioned and adapted to be in ing said shaft in a direction parallel to the motion substantially tangential contact with said head of the head in said guide channels. and having a supporting shaft upon which said 8. In a cutting and creasing machine, a frame, sector ‘table is freely rotatable, means for recipro 60 a head mounted thereon, an arcuate sector table cating the shaft longitudinally of the head and positioned and adapted to be in substantially tan frame, means inter-connecting the table and gential contact with said head and having a sup frame for oscillating the table during the recip porting shaft upon which said sector table is freely rocating motion, and means for sliding said head rotatable, means for reciprocating the shaft longi from a position over said table to a position clear 65 tudinally of the head and frame comprising a thereof. pair of roller carriages mounted in elongated slots 3. In a cutting and creasing machine, a frame, and supporting said shaft at its ends for free mo a head mounted thereon, an arcuate sector table tion longitudinally of said slots and a crank arm positioned and adapted to be in substantially tan drive for reciprocating said carriage in said slot. gential contact with said head and having a sup 70 9. In a cutting and creasing machine, a frame, porting shaft upon which said sector table is a head mounted thereon, an arcuate sector table freely rotatable, means for reciprocating the shaft positioned and adapted to be in substantially tan Without rotation longitudinally of the head and gential contact With said head and having a sup frame, and means interconnecting the table and porting shaft upon which said sector table is free frame for oscillating the table during the recipro 75 ly rotatable, means for reciprocating the shaft 2,405,868 7 8 longitudinally of the head and frame comprising vsaid carriage parallel tothe surface of said head, a pair of roller carriages mounted in elongated slots, means supporting said shaft at its ends in and means inter-connecting said head and said table for oscillating the table during translatory said carriages comprising toggle joint means hav motion of the carriage. 11,. "in a cutting and creasing machine, la frame, a head having a ñat surface mounted thereon, means for fixing the head in a desir-ed position ated the shaft will be lowered, lowering the sector for operation, an arcuate sector table in substan table from said head and a crank arm drive for tially tangential contact with said head, a shaft reciprocating said carriage in said slot and means operative at the end of the stroke for raising 10 supporting said table, a carriage journalling said shaft and permitting free rotation of the same or lowering the shaft. and said table, said machine having a single .drive 10. In a cutting and creasing machine, a frame, source comprising means providing translatory a head ~having a flat surface ‘mounted thereon, motion for _said carriage parallel to the surface an arcuate sector table in substantially tangential of said head, and means interconnecting said contact with said head, a shaft supporting said head and said table for oscillating the table dur table, a carriage journalling said Shaft and per ing translatory motion of the carriage. mitting free rotation of the same and said table, ing .an eccentric element formed as an extension of` said shaft whereby When said toggle is oper said ,machine having a single drive source com LLOYD A. WHITTAKER. prising means providing translatory motion for HAROLD F.- PETERSON.