US659246A - Machine for creasing cardboard. - Google Patents

Description

No. 659,246. Patented ml 9, I900. L. A. MAYALL.

MACHINE FOR CREASING CARDBOARD.

(Application filed June 18, 1900.) (No Model.)

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No. 659,246. Patented Oct. 9, I900.

L. A. MAYALL.

,mAcHmE FOB CREASING CARDBOARD.

(Application filed June 18, 1900.) (No Model.) 3 Sheets-Sheet 2.

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Patented Oct. 9, I900.

L. AQMAYALL.

MACHINE FOR CREASING CARDBOARD.

(Application flledjune 1B, 1900.) (No Model.) 3 She etsSheet 3.

hawfwyy UNITED STATES LEWIS A. MAYALL, OF PHILADELPHIA, PENNSYLVANIA.

MACHINE FOR CREASING CARDBOARD.

SPECIFICATION forming part of Letters Patent No. 659,246, dated. October 9, 1900.

Application fild June 18, 1900.

To all whom it may concern:

Be it known that I, LEWIS A. MAYALL, a citizen of the United States, residing at the city of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Machines for Creasing Heavy Cardboard, Pasteboard, or the Like, of which the following is a specification.

My invention has relation to a machine for creasing heavy cardboard, thick paper, and the like, and in such connection it relates more particularly to the construction and arrangement of such a machine.

The principal objects of my invention are, first, to provide a machine wherein the creasing mechanism is carried by rolls between which the paper or board is fed, the mechanism being especially arranged for the creasing of thick or heavy card and paste board; second, to arrange the forming-bars and diebeds on segmental rolls on the respective shafts of the machines, the segmental rolls being adjustable to bring the forming-bars or the die-beds toward or away from each other to thereby alter or adjust the distance between successive creases, and the segmental rolls adapted complementally to form a continuous roll to feed the paper to and between the dies and bars, and, third, to provide a rotary forming-bar having means whereby it may be extended from the shaft when the bar is to enter the die and retracted after the bar leaves the die, whereby the fiber of the paper at the crease is suitably loosened to make the crease of sufficient elasticity and pliability to permit the board or heavy paper to readily bend on the crease without cracking or breaking the surfaces of the board or paper.

My invention, stated in general terms, consists of a machine for creasing heavy paper, cardboard, or the like constructed and arranged in substantially the manner hereinafterdescribed and claimed.

The nature and scope of my invention will be more fully understood from the following description, taken in connection with the accompanying drawings, forming part hereof, in which Figure 1 is a rear elevational viewof a ma-' chine embodying main features of my inven- Serial No. 20,630. (No model.)

tion. Fig. 2 is a side elevational view of a portion of the machine. Fig. 3 is a vertical sectional view on the line 00 0c of Fig. 1. Fig. 4 is an enlarged perspective view of the segmental rolls, the shafts, the forming-bars, and dies of the machine, the two forming-bars being arranged or adjusted so as to' lie diametrically opposite to each other. Fig. 5 is an end elevational View of the segmental rolls carrying the forming-bars, the said rolls being turned or adjusted to bring the bars at approximately right angles to each other. Fig. 6 is a rear elevational view enlarged of a modified form of the invention, illustrating a means foradvancing or retracting the forming-bars during the creasing operation. Fig. 7 is a detail view illustrating the arrangement of the cams at either end of the machine to shift the forming-bars. Fig. 8 is a perspective view of one of the forming-bars in retracted position. Figs. 9 and 10 are verticalsectional views of the forming-rolls illustrated in Figs. (Ho 8 and of the complemental die-rolls, showing the formation of the crease; and Figs. 11 and 12 are respectively top or plan and edge views of a sheet of heavy paper or cardboard after being creased on the machine.

Referring to the drawings, a a represent the side frames of the machine. In these frames 01- two shafts b and d have their bearings. The shaft 1) has secured to it at certain intervals a series of sleeves b, from which project segmental rolls b In suitable recesses or notches b of these rolls b is secured one of the forming-bars e of the machine. Between the sleevesb is arranged a second series of sleeves b whichare not secured directly to the shaft b and from which project oppositely-arranged segmental rolls b in which is secured the second forming-bar e. The rolls b are arranged adjacent to the rolls 12 so as to form with said rolls a complete roll, as illustrated in Fig. 3'or in Figsuet and 5that is, at a point where either roll 19 or b is cut away the other roll is uncut and forms a continuation of the periphery of the first roll b or 12 On the shaft 01 is a similar alternate arrangement of segmental rolls d and (P, the rolls (1 being secured to the shaft (1 and carrying one of the die-beds f, While the other rolls d are not normally secured to the shaft (1 and carry the other die-bed f. The shafts (Z and b are geared together by gear-wheels w 10 at one side of the machine, so that when rotating the shafts will carry one bar e and one die-bed f and cause them to aline to form the creasing-die. The other bar 6 is secured at either end to a roll 6 and these rolls e 'are provided with a gear e. The other die-bed f is likewise secured at either end to a roll f provided with a gear f meshing with the gear 6 The gears f and f are so arranged as that the bar 6 and bed f are adapted at intervals to alineto form the second creasing-die of the machine.

In Figs. 1, 3, and at the two bars 6 and e are arranged diametrically opposite to each other, and the bedsf and f are similarly arranged. In the creasing operation,therefore,one crease will follow the other at a distance equal to one-half the travel of the segmental rolls on the shafts. In Fig. 5, however, a different adjustment of the bars e and e is illustrated, and this adjustment is accomplished by turning the shafts b and d, with their segmental rolls 5 and (1 independently of the rolls e and f which carry, through the bar 6' and bed f, the other segmental rolls b and d When, however, the required adjustment has once been secured, both sets of the rolls b and b and d and d are locked to their respective shafts b or d by suitable set-screws.

In Figs. 1 to 5, inclusive, the creasing-bars e and e consist simply of a strip of steel having a creasing edge of required outline. In Figs. 6 to 10, however, an adjustable creasing-bar is illustrated, by means of which the necessary loosening ofthe fiber of the paper A at the creases A is secured. In. this form the bar consists of two members e and e both held or guided in a channel-piece (2 which is secured'to the rolls b and b The inner e of these members has on its outer face a series of ratchet-like or inclinedprojections c and is adapted by a pin 6 and slot 6 arrangement to slide back and forth in the channel-piece 6 The other member 6 has a similar, but oppositely-arranged, series of projections a" contiguous to the projections 6 This member 6 has no longitudinal movement in the channel-piece 6 but, on the contrary, has a transverse movement therein, which movement is secured by the transverse slot 6 and the pin e as clearly illustrated in Figs. G'and 8. The inner member 6 has at either end a projecting fingerg and g, which as the member travels with the rolls 1) or.b is adapted at one side to be operated by the cam g to push the member 6 from left to right and at the other side to be operated by a cam g to push the member from right to left. It will be readily under stood that when shifted from right to left the inclined projections 6 will ride upon the,

similar projections e of the other member and the member 6 will be pushed out or away from 'the member e as illustrated in Fig. 6, while an opposite movement of the 5 member a i's'retracted;

ing' the fioor of the box. f and between the floor of the box. and. the

or similar elastic or yielding support f member 6 will cause the two members to interlock, as illustrated iirFi'g. 8, in which the member e isdrawnin. If necessary, springs (not shown) may be employed to facilitate this retraction of the member a The cams g and 91 are so arranged with respect to the travel of the ban that when the lower member e is entering the bed f or f, as illustrated in Fig. 9, the said lower member is pushed out or away from-the inner member to the fullest extent, while when the bar is leaving the die, as illustrated in Fig. 10, the By this means not only is the crease A properly formed by the bar and die, but the fiber of the paper is suf- ,ficiently loosened to permit of bending along the crease without breaking the outer surfaces of the paper or board. The construction of the die-beds f and'f is preferably as illustrated in Figs. 4, 9, andl10.-. Each. consists of a channel'piece or box f having an .upper or outer openend in which is fitted a The strips f have a. series metal stripf. of pins f depending from them and travers- Around. the pins under face of the strips f is located a spring The springs f serve to permit of the depression of the strip f as the bar enters the bed and to return the strip to. the top of the box f when the bar leaves the bed, to thereby eject the formed or creased part of the sheet.

In the blank illustratedin Fig. 11 thesheet A has been creased with two sets of! creases crossing each other at right angles. This creasingv may be obtained either by passing the sheet twice between the forming-bars and.

die-beds to crease the-sheet at successive operations, or twosets of rolls carryingthe forming-bars and die-beds may be, arranged at right angles toeaeh other and the sheet-passed through both sets successit ely to crease the sheet at one operation.

Having thus described the nature andobjects of my invention, what I claimas new, anddesire to secure by Letters Patent, is-

1. Ina rotary creasing-machine, a shaft, a

series of segmental rolls carried by said shaft, a forming-bar carried by said rolls, a second series of segmental rolls located on said shaft and adjustable thereon independently of said.

first series of rolls,.and a secondforming-bar carried by said second series of rolls, both series of rolls being arranged alternately to form conjointly continuous rolls adapted: to feed the material to be creased-,substantially as and for the purposes described.

2. In a rotary creasing-machine,two shafts geared together, a series of. segmentali rolls secured to one of said shafts, a forming-bar carried by said rolls, asimilar series of segmental rolls secured to the other of said shaftsand a die-bed carried thereby, in combination with a second series of segmental rolls located on each of said; shafts and adjustable thereon independently of the other series,.a second forming-bar and a second die-bed respectively carried by each second series of segmental rolls,and a roll and gear-wheel to which either end of the second forming-bar and the second die-bed are secured, said gear-Wheels meshing together, substantially as and for the purposes described.

3. In arotary creasing-machine,a shaft and means for rotating the same, in combination with a forming-bar rotating with said shaft and consisting of two members, a channelpiece carried by the shaftin which the inner of the members is longitudinally and the outer member is transversely movable, a series of inclined projections formed on the outer side of the inner member, a series of similar but oppositely-arranged projections formed on the inner or contiguous side of the outer member, and means for periodically shifting the inner member in the channelpiece during the rotation of the shaft, to

thereby cause the outer member to movetransversely in and out of said piece, substantially as and for the purposes described.

at. In a rotary creasing-machine, a rotary shaft or roll, a plurality of die-beds arranged longitudinally of the shaft or roll and paral- 'lel to each other, each die-bed comprising a box having an open upper face or side, a strip adapted to slide in said box and normally closing its open face or side, a series of pins depending from the strip and adapted to traverse the base of the box, and yielding or elastic supports surrounding the pins and interposed between the base of the box and the under face of said strip, and means for adj usting each die-bed independently of the other bed or beds, so as to cause the beds to approach or recede from each other, substantially as and for the purposes described.

In testimony whereof I have hereunto set my signature in the presence of two subscribing witnesses.

LEWIS A. MAYALL.

Witnesses:

J. WALTER DOUGLASS, THOMAS M. SMITH.

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