US1482391A

US1482391A - Cutting and creasing press

Info

Publication number: US1482391A
Application number: US442096A
Authority: US
Inventors: Fred S English
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-02-03
Filing date: 1921-02-03
Publication date: 1924-02-05
Anticipated expiration: 1941-02-05

Description

Feb; 5 {1924.

Filed Feb. 5, 1921 5 Sheets-Sheet 1 w nuw w s b Feb. 5, 1924. K 1,482,391 F. S. ENGLISH v CUTTING AND CREASING PRESS I Filed Feb. 5, 1921 5 Sheets-Sheet 2 FeB. 5 1924. 1,482,391

' F. s. ENGLISH CU'ETING ANP.CREASING PRESS 7 Filed Feb. 5, 1921 5 Sheets-Sheet 5 5 Sheets-Sheet 4 Filed Feb. 5, 1921' F s ENGLISH CUTTING AND CREASING PRESS Feb. 5, 1924..

Feb 5 1924. 1,482,391

F. s. ENGLISH CUTTING AND CREASING PRESS.

Filed Feb. 3, 1921 5 Sheets-Sheet 5 Patented Feb. 5, 1924.

lT'E? ,STATS FRED s. ENGLISH, on NEW LONDON, CONNECTICUT.

CUTTING AND CREASING PRESS.

Application filed February 3,1921. Serial No. 442,096.

ments in Cutting and Creasing Presses, of

which the following is a specification.

My invention relates to anovel jacket device for the impression cylinder of a press .on which cutting and creasing of cardboard,

etc., is to be done. My invention is adapted to be applied to a printing press for the purpose of converting it for cutting and creasing work, or it maybe applied to a press which is specially built only for cutting and creasing.

In cutting and creasing cardboard, as

i where blanks from which cardboard boxes are to be made are cut and creased, itis customary to make'up a formof cutting and creasing rules, in a chase, then mount the chase on the bed of a printing press, and run the sheets of cardboard through the press about thesame way as sheets of paper arerun through apress when printing. The cutting rules are sharp andcut through the blank sheet whereasthe creasing rules are dull and of less height thanthe cutting rules and they crease the sheet so that it may be readily folded on the crease lines to form a box or other article.

For cutting and creasing it is customary to place a hard jacket generally of hardened steel, on the impression cylinder of the press, against which the cutting rules out the sheets of cardboard. A matrix of heavy stock is generally 'made up on this jacket as a means against which the creasing rules can press the sheets to crease them.

The present invention relates to the construction of the jacket used for cutting and creasing on presses and to the means for attaching the same to the impression cylinder of the press. One object of my invention is to provide means whereby the jacket may be readily detached at one end and whereby it may be swung upwardly from a pivotal connection at the other end to permit make ready to be inserted between the acket and :01 part of the cylinder,

parts of a p the drawings.

rear end of the jacket to be made without bend and this is important because it '18 very difiicult to make jackets of hardened steel which will not break, where the ends are bent in to be secured to the cylinder.

The device at the leading end of the jacket permlts the jacket to swing on a pivot, remaining attached to the cylinder while the .make ready is being inserted under the jacket, and it also permits'the jacket to be quickly and bodily detached from the cylinder and it also permits the leading end of the cylinder to be made without an in- .turn or bend.

Another object of my invention is toprovide for the insertion of make ready right up to the forward end of the jacket, so

.that all portions of the jacket are accessible application,

Figure '1 is a side elevation of a press arranged for cutting and creasing,

Figure 2 is a sectional view of the impression cylinder and the jacket, showing the latter in condition for operation,

Figure 3 is a plan View of one corner of the leading end of the jacket and its securing means,

Figure 4 is an enlarged sectional view showing the leading end of the jacket and its securingimeans,

Figure 5 is a similar view showing the jacket swung up on its pintl-es to permit make ready to be placed under it,

Figure 6 is an enlarged sectional view showing therear end of the jacket and its securing means, and

Figure 7 is a. plan view thereof.

In Figure l I have shown some of the press for cutting and creasing and in this view I have shown the feed table 1 from which the sheets are fed, the impression cylinder 2, to which my present improvements are applied: the bed 3, the delivery device 4:, and the raising and lowering pile table 5 to receive the sheets from the delivery device. The press may comprise an ordinary printing press or it may be apress especially constructed for cutting and creasing, as shown in Figure l of are especially related to or associated with the impression cylinder and this, is the only The present improvementsmember of the press proper which is shown in the remaining figures of the drawings.

The cylinder 2 is provided with an impression portion 6 extending partially around it and the removable jacket 13 is applied tightly thereover and the matrix, not shown, is attached to this jacket and is then routed out to correspond with the cutting and scoring rules in the form which is to be used for any particular job.

The jacket 13 is made without end bends; i. e., it is either fiat or arched to correspond with the curvature of the cylinder 2 but its ends 10, 11 are not inturned for securement to the impression cylinder as 1 have provided means for securing the ends in a novel way.

The leading or gripper end 10 of the jacket is shown in Figures 3, 4 and 5 and I will first describe the means for attaching this end of the jacket to the cylinder. The leading end of the jacket is permanently secured to a small section or bar 14 which extends across the leading end of the jacket parallel with the edge. This attachment is preferably made by means of rivets 15 pass ing through the jacket and the bar 14, althoiwh it will be obvious that the jacket and bar may be welded together. If rivets or screws are used, the heads should be countersunk in the jacket as shown herein. To the smaller bar 14 and the jacket there is attached a larger or heavier bar 16, by means of the screws 17, this latter bar also extending across the edge of the jacket. These

bars

14 and 16 secured together as if they were one, are adapted to seat in a notch or recess 19 in the forward edge of the impression cylinder, so as to be below or within the circle or are of the jacket. The bar 16 is provided with a number of apertures which receive therein the dowel pins 20 projecting from the edge 20 of the cylinder 2. The bar 16 is held engaged on the dowel pins 20 and pressed against the edge of the impression portion of the cylinder 2 by means of clamps 21 secured to the shaft 21. The bar 16 is detachably hinged to the cylinder as follows: On each end of the bar 16 there is attached a plate 22 by means of screws 23. This plate has a slot 23 which fits over a stud 24, the latter being driven into the cylinder, and the construction is duplicated at both sides of the cylinder. A screw 26 passing through one of the jaws of the plate 22 prevents the plate from disengaging from the stud 24 and the slot 23 is elongated to permit the plate 22 to slide along the stud 24 sutliciently to remove the bar 16 from the dowel pins 20. The jacket may then be swung upwardly on the studs 24 as a hinge, as is shown in Figure 5, to permit make ready to be inserted under the jacket. Or, the jacket may be entirely removed from the cylinder by turning the screws 26 and releasing the plates 22 from the studs 24. The

bars

14 and 16 it will be obvious, are movable with the jacket when the latter is manipulated.

It may be desirable to place make ready right up to the leading edge of the jacket where the sheet grippers 40 engage it, but if the bar 16 were integral with the jacket this could not properly be done, or at least the extreme end of the jacket could not be raised locally crosswise of the cylinder because the bar 16 would be too rigid to ad just itself to local make ready. In the present case the bar 14 is adapted to adjust itself to or is bendable under local make ready as the latter may be inserted between the bar 14 and the bar 16. For this purpose, the screws 17 may be loosened and the make ready may be placed between the

bars

14 and 16, to bring the leading end of the j acket up to the required level to suit the rules in the form. This make ready need not be of equal thickness all across the jacket but it may vary locally. When this make ready has been applied, the screws 17 are tightened again.

The device for detachably securing the rear end of the jacket to the cylinder is constructed as follows:

The rear end 11 of the jacket is provided with a number of holes 28 across the jacket and these holes receive therein the heads of the adjustable pins 29. The pin 29 fits and moves in an aperture 41 in the casting 30 which fits over and is held by the shaft 31. There will be a number of these castings, corresponding with the holes 28 in the jacket, all of which are mounted on the shaft 31; and as they are all alike a description of one will answer for all. The castings 30 may revolve loosely on the shaft 31, and they are prevented from shifting lengthwise of the shaft by means of the screws 32, engaging loosely in the circumferential grooves 33 in the shaft. The headed pin 29 is held in the required position by means of a set screw 34 the pin 29 being adjustable in its aperture 41 in the casting. The set screw 34 projects into a circumferential groove 45 in the pin 29 which groove is sufficiently wide to permit for the adjustment of the pin 29, the set screw locking against the bottom of this groove to hold the pin 29 in adjusted position. As the set screw 34 need be turned but slightly to allow for the adjustment of the pin 29 its end always projects into the groove 45 and therefore the pin 29 will not drop out of the casting even when the jacket is removed from the cylinder.

There is a coiled spring 37 for each casting 30 and it surrounds the shaft 31, one end of the spring being anchored in the casting 30 and the other pressing against the edge of the cylinder. The spring 37 tends to Ill the cylinder.

portion of the cylinder.

through the casting 30 and .the irear endof the impression portion of To release the ,rear end of'the.

der.

end of jacket.

swing the casting. 30 to the v ight-in Figure 7 or toward the rear edge of theimpression The belt 36, there being ,one for each casting, is threaded its end engages jacket it is only necessary to slack off ,the several screws 36,and the-springsi37 swing thecastings 3O towardthe-edgeiof the cyflinder. The end of the jacket may then be released from the heads OfthB several ,pins 29. When the jacket is replaced, the springs 37 hold the castings.30,in position sothat the pins 29 will enter the holes 28. The-sev- .er al screws 36 are then turned and this turns the castings 30 on their shaft 31, --moving the pins 29 away from the cylinder edge and thusti'ghtening-up the jacket on the cylin- It is only necessary .to manipulatethe several screws 36-to. attach orrelease the rear If. the cylinder is operated without the jacket there is nothing to interfere with its revolution, and there are no loose parts carriedby it. I.

The present device is very economical :to

make. Anotheradvantage is that when the jacket is removed the parts remain in the position to receive it vwhen :the jacket is replaced again The rear end Ofytl'lfi jacket, like the forwardiend, need not be-bent inwardly from the-curvatureof the remainder of the cylinder.

I have found that when the rear clamps are drawn up tight to tighten the jacket on the cylinder the strip 16 has a tendency to rise up at its forward edge or to rock against the edge 18 of the impression cylinder. To prevent this, I have provided a groove on the forward edge of the strip 16, to form a shoulder 42 and the clamping ends of the tympan clamps 2l are provided with adjustable screws 43 which form what amounts to a hook, to engage over the shoulder 42 and thus prevent the strip 16 from rising at this edge, as well as holdin'g the strip tight on the dowel pins.

Having described my invention, what I claim is:

1. In a press the combination with the impression cylinder, of a jacket for the impression portion thereo a strip secured across the leading edge of the jacket at the inner surface thereof and having its outer surface curved to conform to the curvature of the cylinder surface, a second strip inside said first strip, means for securing said strips together and adapted to permit the strips to be slightly separated to permit make ready to be inserted between the strips.

2. In a pressthe combination with the impression cylinder, of a jacket for the impression portion thereof, a relatively thin strip secured across the leading edge'of the jacket at the inner surface thereof and adapted rtO yield Llocally iunder the action of .make ready and having its outer surface curved to conform to the curvature of the .cyl indersurface, asecondand more rigid stripinside said firststrip, means for securing said strips together and adapted to permit the strips to be separated to permit makereadyto be inserted between the strips. 3. In a press the combination with the impression cylinder, of a jacket for the impression portion thereof, a relatively thin strip secured across the leading edge of the jacketat the inner surface thereof, a second strip inside said first strip, means for securing said strips together and adapted to per- ,mit the strips to be partially separated to .permitma-ke readyto be inserted between the strip secured across the leading edge of the jacket at the inner surface thereof, a. second strip inside said first-strip, means for securing said strips together and adapted to permit the insertion of make readybetween said strips, dowel pins on the cylinder adapted to be received in said second strip and hinge supports on which said jacket .and its strips are adapted to swingand to slide, whereby the said second strip may be moved into and out of engagement with said dowel pins while engaged with the hinge supports.

5. In a press the combination with an impression cylinder, of a jacket for the impression portion therof, a strip extending crosswise at the leading edge of the jacket, dowel pins in the cylinder adapted to be received in said strip, said strip having a shoulder on the side opposite the dowel pins, and tympan clamps for holding said strip engaged with said dowel pins and arranged to engage over said shoulder of the strip for the purpose set forth.

6. In a press the combination with the impression cylinder, of a jacket for the impression portion thereof, means for securing the leading edge of the jacket to the cylinder, and means for detachably secur ing the rear edge of the jacket to the cylinder, comprising a shaft, clamps pivoted to swing on said shaft toward and from the end of the impression portion of the cylinder, and headed pins insertible in apertures in the rear end of the jacket and extending into said clamps in a direction substantially radially of the cylinder and means for forcing said clamps in the direction necessary to tighten the jacket on said cylinder.

7. In a press the combination with the clamps impression cylinder, of a jacket for the impression portion thereof, means for securing the leading edge of the jacket to the cylinder, and means for detachably securing the rear edge of the jacket to the cylinder, comprising a shaft, clamps pivoted to swing independently on said shaft toward and from the end of the impression portion of the cylinder, headed pins insertible in apertures in the rear end of the jacket and extendin into said clamps in a direction substantially radially of the cylinder, said pins having grooves therein, set screws in said clamps entering said grooves and engaging said pins to hold them in the clamps, and means for forcing said clamps in the direction necessary to tighten the jacket on said cylinder.

8. In'a press the combination with the impression cylinder, of a. jacket for the impression portion therof, means for securing the leading edge of the jacket to the cylinder and means for detachably securing the rear edge of the jacket to the cylinder, comprising a shaft, clamps pivoted to swing on said shaft toward and from the end of the impression portion of the cylinder, springs urging said clamps toward said end of the cylinder and bolts for forcing said away from the cylinder end, headed pins insertible in apertures in the rear end of said jacket and movable in said clamps substantially radially of said cylstrips to be slightly separated to perm t make ready to be inserted between the strips, and hinge supports connecting said second strip with the cylinder whereby the jacket may be swung on said hinge sup ports.

10. In a press the combination with the impression cylinder, of a jacket for the impression portion therof, means for securing the leading edge of the jacket to the cylinder, and means for detachably securing the rear edge of the jacket to the cylinder, comprising a shaft, clamps pivoted to swing on said shaft toward and from the end of the impression portion of the cylinder and having headedpins extending outwardly from said clamps in a directionradially of said cylinder, and means for forcing said clamps in the direction necessary to tighten the jacket on the cylinder.

Signed at New London, in the county of New London and State of Connecticut, this 11th day of January, 1921.

FRED S. ENGLISH.