US1205840A - Sheet cutting and feeding mechanism for printing-presses. - Google Patents

Description

H` IVI. BARBER.

SHEET CUTTING AND FEEDING NIECHANISNI FOR PRINTING PRESSES.

APPLlCATlON FILED DECJS. 1913.

Patented Nov. 21,1916.

3 SHEETS-SHEET1,

f//f/ M W24/M www H. IVI. BARBER.

SHEET CUTTING AND FEEDING IVIECHANISIVI FOR PRINTING PRESSES.

APPLICATION FILED DEC. I3. |913.

1,205,840. Patented Nov. 21, `1916.

3 SHEETS-SHEET 2.

H. IVI. BARBER.

SHEET CUTTING AND FEEDING MECHANISIVI FOR PRINTING PRESSES.

APPLICATION FILED DEC. I3. 19I3.

Patented Nov. 2L 1916.

3 SHEETS-SHEET 3.

Tns y HOWARD M. BARBER, OF STONINGTON, CONNECTICUT, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO C. B. COTTRELL & SONS COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

SHEET CUTTING AND FEEDING MECHANISM FOR PRINTING-PRESSES.

Application led December 13, 1913. v Serial No. 806,531.

T0 ZZ 'rv/2.0m it 'may concern Be it known that I, HOWARD M. BARBER, a. citizen of the United States, and resident of Stonington, in the county of New London and State of Connecticut, have invented a new and useful Improvement in Sheet Cutting and Feeding Mechanism for Printing- Presses. of which the following is a speciiication.

The object of this invention is to provide means for cutting sheets of different lengths from a continuously moving web and to feed the sheets thus cut in register to the printing mechanism.

This invention comprises means for vary- .ing the speed of the web according to the length of sheets to be cut therefrom.

It also includes coacting cutters rotating at a variable speed so that at the moment of cut the cutting knives will travel at the speed of the web.

It alsoincludes adjustable means for feeding the sheets from the cutters to the printing mechanism.

Hy invention more specifically includes a group of web feed rolls arranged to be driven at different speeds so as to deliver the proper amount of web. for any .desired length of sheet, to the rotary cutters.y

It also more specifically includes a sheet feeding means interposed between the rotary cutters and the printing mechanism, which means comprises three rotary sheet carriers, the first carrier being adjustable toward and away from the rotary cutters and the second carrier being adjustable in a. curve and concentric to the axis of the third rotary carrier. so that the three rotary carriers are kept in coactive relationship to each other and with respect to the cutters and the printing mechanism.

A practical embodiment of my invention is represented in the accompanying draw- :ings` in which- Figure 1 represents in side elevation so much of a rotary sheet feed printing press as will give a clear understanding of the invention, Fig. 2 is a diagrammatic section showing the parts in the positions which they assume when along sheet is being cut and -fed to the printing mechanism, Fig. 3 is a Specification of Letters Patent.

Patented Nov. 21, 15116.

similar view showing the parts in the positions which they assulne when a. shorter sheet is being cut and fed to the printing mechanism, F ig. 1 is a detail section on an enlarged scale through the sheet feed rolls, Fig is a detail section showing the arrangement of the train of gears for feeding the proper length of web for the long sheet, and F ig. 6 is a similar section showing the train of gears for feeding the proper length of web for the shorter sheet.'

The printing mechanism illustrated herein comprises an impression cylinder 1 and its plate cylinders 2, 3, 1 and 5.

The means illustrated herein for delivering the sheets from the impression cylinder l comprises the transfer cylinders 6, 7 and the delivery cylinder 8 Varranged to deposit the printed sheets in a pile on the table 9.

It is understood that the printing mechanism and delivery mechanism may be of any well known or approved construction and forms no part of the present invention.

The coacting rotary cutters are denoted by 10, 11, and their blades by 12, 13. These cutters are provided with intermeshing gears l-t, 15, as is usual. These cutters make one revolution for each sheet cut from the web and they are driven through a pair of elliptical gears 16A` 1T, from the shaft l18 at a variable speed so that the blades l2 and 13 `28 of the roll 22 is provided with a gear 29, which gear is driven from the gear 30 on the shaft 18 through' the gears 31. 32, mounted on the idler shaft 33, which sha ft is movable in a curved path concentric with the shaft 18. The surface speed of the rolls 20, 21, 22, 23, may be varied by introducing a larger or smaller gear 32. For instance, where a long sheet is to be cut and fed to the printing mechanism, the web is fed more rapidly by the introduction of a large gear 32, as shown in F ig. 5, and Where a shorter sheet is to be cut and fed the web is driven at a slower speed by introducing a smaller gear 32. 1t is evident that the speed of the web can, by this means, be accurately adj usted to feedthe desired amount for any desired length of sheet.

Sheet feed rolls 34, 35, are located below the rotary cutters 10, 11, and are geared together through the gears 36, 37. The feed roll 35 is provided with a slip clutch connection 38 between it and its shaft 39 so that the tail end of a sheet may be drawn from between the two rolls at a greater speed than the speed of the rolls when so desired as will hereinafter more fully appear.

The shaft 39 of the feed roll 35 is driven from the shaft V40 of thevweb feed roll 23 through the bevel gears 41, 42, vertical shaft 43, and worm and gear 44, 45. Guides 46, 47, serve to guide the web from the rotary cutters 10, 11 to the feed rolls 34, 35. The shaft 18 is drivenfrom the impression cylinder gear 48 through the train of gears 49, 50, 51, 52, 53.

The adjustable means for feeding sheets of different lengths to the printing mechanism comprises three coacting rotary carriers, in the present instance reels 54, 55,

" 56, which are driven at the proper speed chine.

from the impression cylinder gear 48 through the gears 57, 58, 59. r1`he shaft 60 of the third reel 54 is mounted in fixed bearings in the machine frame. The shaft 61 of the second reel 55 is mounted to move in a curved path concentric with the shaft 6() of the third reel'54. The shaft 62 of the rst reel 56 is mounted in suitable bearings in the sliding carriages 63 at both sides of the machine.

The first reel 56 is movable in a right line toward and away from the feed rolls 34, 35, by means of a screw shaft 64, which engages a traveling nut 65 on each of the carriages 63. Each of these screw shafts is mounted in upper and lower bearings 66, 67, and is rotated through a worm and gear connection 68, 69, from a cross shaft having'a suitable operating handle 71 at one side of the ma- Tuckingl disks 72 have their shafts 73 mounted in suitable bearings in the carriages 63.

The web as it passes through the rolls 34, 35, is guided downwardly to the first reel 56 between a fixed guide 74 and an extensible uide 75, one end of which extensible guide is attached to a spring roll 76 and the other end of which extensible guide is attached to the carriages 63.

The shaft 61 of the second reel 55 is slidable i-n the curved slots 77 in the frame. The shafts 60 and 61 are connected through rocking arms 78 and the shafts 61 and 62 are connected through the rocking arms 7 9. It is understood that thereis a. slot 77 in each of the side frames and that there are two setsof arms 78, 79.

rlhe grippers on the first reel 56 are denoted by 80, the grippers on the second reel 55 by 81, and the grippers on the third reel 54 by 82. The grippers 80 on the first reel 56 are opened to receive the advance edge of the sheet and closed upon the same by suitable tumbler cam mechanism 83. These grippers are opened to transfer the advance edge of the sheet to the grippers 81, of the second reel by a cam 84 on one of the arms 7 9. rlhe grippers 81 on the second reel are opened to receive the advance edge of the sheet from the grippers 80 of the first reel and are open to transfer the advance edge of the sheet to the grippers 82 of the third reel irrespective of the position of the reels 55 and 56 with respect to each other and the reel 54, by means of a divided cam 85, 86, one part secured to the arm 79 and the other part to the arm 78.

The grippers 82 of the third reel are opened to receive the advance edge of the sheet from the hgrippers 81 of the second reel by a cam 87 on one of the arms 78 and these grippers 82 are opened to transfer the advance edge of the sheet to one of the grippers of the yimpression cylinder by means of a cam 88 carried by the side frame.

The shaft 33 which carries the intermediate gears 31, 32, is movable in the curved elongated slots 89 concentric with the shaft 18 for permitting the introduction of gears 32 of different diameters according to the speed which it is desired to drive the web 19.

In operation, presupposing the parts to rbe in the position shown in Figs. 1, 2 and 5, for the cutting of a long sheet from the web and the`feeding of the same to the printing mechanism: The proper size of gear 32 is introduced for driving the web feed rolls 20, 21, 22, 23, at the proper surface speed to feed the web 19 at the desired speed for causing the cutters 10, 11, to sever a sheet of the desired length. The elliptical gears 16, 17, are then adjusted rotatively with respect to the shaft of the rotary cutter 11 so that the blades 12, 13, will cut the sheets when traveling at the surface speed of the web. The feed rolls 34, 35, will be driven at the desired speed from the shaft 40 of the feed roll 23. The first reel 56 is adjusted so as to take the advance edge of the sheet at about the time when the sheet is severed from the web.

rIhe tuclring disks 72 serve to insure the introduction of the advance edge of the sheet into the grippers 80 of the first reel. This reel then transfers the sheet to the second reel and the second reel transfers vthe sheet to the first reel. This third reel transfers the sheet to the impression cylinder. i

When a shorter sheet is to be cut and fed, a gear 32 of the proper size is introduced for driving the feed rolls 20, 21, 22, 23, at the desired speed for feeding the web to the cutters at the slower speed required for the shorter sheet. The elliptical gears 16, 17, are then rotatively adjusted with respect to the shaft of the cutter 11 so that the blades 12 and 13 will cut the shorter sheet from the web while traveling at the surface speed of the web.

The feed rolls 34, 35, will be driven at the surface speed of the web from the shaft 40 of the feed roll 23. The first reel 56 is adjusted upwardly by the turning of the screw shafts 64 until the reel is adjusted in the proper position for receiving the advance edge of the shorter sheet at about the time the sheet is severed from the web. rlhis vertical adjustment of the first reel 56 will move the second reel 55 around the third reel 54 without disturbing the coactive relationship of the reels with respect to each other and with respect to the impression cylinder.

As the surface speed of the reels is not changed for the different lengths of sheets, it is found desirable to use a tumbler cam mechanism for opening and closing the grippers 80 of the first reel and it is also found desirable to provide the roll 35 with a slip clutch connection so that when the grippers 80 close upon the advance edge of the shorter sheet the tail end of the sheet may be pulled through the rolls 34, 35, at a surface speed greater than the surface speed of the said rolls. If so desired, these feed rolls 34, 35, may be put out of operation for the handling of the longer sheets, as the grippers on the iirst reel may be adjusted to receive the leading edge of the sheet just before the sheet is severed from the web.

It will be seen from the above description that a machine is provided which may cut sheets of different lengths from a continuously running web and feed the same to the printing mechanism, the parts being very readily adjustable to suit the different lengths of sheets being cut and fed.

It is evident that changes might be resorted to in the form, construction and arrangement of the several parts without departing from the spirit and scope of my invention; hence I do not wish to limit myself strictly to the structure herein set forth, but

lVhat I claim is 1. In a machine for cutting sheets and feeding them to a printing mechanism, a web, means for cutting sheets of different lengths therefrom and means for feeding the different length sheets to the printing mechanismincluding a plurality of coacting rotary carriers and means for bodily adjusting said carriers without changing `their surface speed or coactive relationship.

2. In a machine for cutting sheets and feeding them to a printing mechanism, a web, means driven at a varying speed for cutting sheets of different lengths therefrom at the surface vspeed of the web and means for feeding the different length sheets to the printing mechanism including a plurality of coacting rotary carriers, and means for bodily adjusting said carriers withoutchanging their surface speed or coactive relationship.

3. In a machine for cutting sheets and feeding them to a printing mechanism, a web, means for cutting sheets of diHerent lengths therefrom and means for feeding the different length sheets to the printing mechanism including a plurality of coacting rotary carriers, one ofsaid carriers being adjustable toward and away from the sheet cutting means.

4. In a machine for cutting sheets and feeding them to a printing mechanism, a web, means driven at a varying speed for cutting sheets of different lengths therefrom and means for feeding the different length sheets to the printing mechanism including a plurality of coacting rotary carriers, one of said' carriers being adjustable toward and away from the sheet cutting means.

5. In a machine for cutting sheets and feeding them to a printing mechanism, a web, means for cutting sheets of different lengths therefrom and means for feeding the different length sheets to the printing mechanism including three coacting rotary carriers, and means for bodily adjusting two of said carriers without changing their surface speed or coactive relationship.

6. In a machine for cutting sheets and feeding them to a printing mechanism, a web, means driven at a varying speed for cutting sheets of different lengths therefrom at the surface speed of the web and means for feeding the different length sheets to the printing mechanism including three coacting rotary carriers, and means for bodily adjusting two of said carriers rotatively without changing their surface speed or coactive relationship.

7. In a machine for cutting sheets and feeding them to a printing mechanism, a web, means for cutting sheets of different lengths therefrom and means for feeding the different length sheets to the printing mechanism including three coacting rotary carriers, the first being adjustable toward and away from the sheet cutting means and the second being adjustable about the third.

8. In a machine for cutting sheets and feeding them to a printing mechanism, a

Web, means driven at a varying speed forfirst being adjustable toward and away from the sheet cutting means and the second being adjustable about the third.

9. In, a machine for cutting sheets and feeding them to a printing mechanism, a web, means for feeding it at different uniform speeds, means driven at a Varying speed for cutting sheets of different lengths v therefrom at the surface speed of the Web feeding them to a printing mechanism, a

. the printing mechanism including three co- Web, means for feeding it at different i speeds, means driven at a varying speed for cutting sheets of different lengths therefrom at the surface speed of the vveb and means for feeding the different length sheets to the printing mechanism including a plurality of coacting rotary carriers, one of said carriers being adjustable toward and avvay from thesheet cutting means.

12. In a machine for cutting sheets and feeding them to a printing mechanism, a

Web, means for feeding it atv different speeds, means driven at a varying speed for cutting sheets of different lengths therefrom at the surface speed of the Web `and means for feeding the different length sheets to acting rotary carriers, tWo of said carriers y being adjustable.

13. In a machine for cutting sheets and feeding them to a printing mechanism, a web, means for feeding it at different speeds, means driven .at a varying speed for cutting sheets of different lengths therefrom at the surface speed of the vveb and means for feeding the dierent length sheets to the printing mechanism including three coacting rotary carriers, the first being adjustable toward and away from the sheet cutting means and the second being adjustabl'e about the third.

14. In a machine for cutting sheets and feeding them to a printing mechanism, a web, means for feeding it at different speeds, means driven at a varying speed for cutting sheets of different lengths therefrom at the surface speed of the Web and means for feeding the different length sheets to the printing mechanism including three coacting rotary carriers and a common means for adjusting the position of the first carrier with respect to the sheet cutting means and the position of the second carrier with respect to the first and third carriers.

15. In a machine for cutting sheets and feeding them to a printing mechanism, a web, means for feedingA it at different speeds, means driven at a varying speed for cutting sheets of different lengths therefrom `at the surface speed of the web -and means for feeding the different length sheets to the printing mechanism including three coacting rotary carriers and a common means for adjusting the first carrier in a right line tovvard and away from the cutters and the second carrier in a curved line concentric with the axis of thc third carrier.

16. A web, means for feeding it at different uniform speeds and means driven at a varying speed for cutting sheets of different lengths therefrom at the surface speed of the web.

17. A pair of coacting rotary cutters, a- Web, means for feeding it at different uniform speeds 'to the cutters and means for rotating the cutters .at a varying speed to cause the cutters t0 operate on the web While traveling at the surface speed of the web.

In testimony, that I claim the foregoing as my invention, I have signed my name in presence of two Witnesses, this ninth day of December, 1913. Y

- HOWARD M. BARBER. Witnesses:

A. R. STILLMAN, E. M. GRANT.

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