US668915A - Paper-slitting attachment for printing-presses. - Google Patents

Description

No. 668,9I5. Patented Feb. 26, l90l.

J. F. FRDMM. PAPER SLITTING ATTACHMENT FDR PRINTING PRESSES.

(Application filed Oct. 26, 1900.)

2 Sheets-Shoot l.

Inventor.

(No Nodal.)

Witnesses.

$4 Attorney.

" N0. 668,9I5. Patented Feb. 26, I90l.

J. F. FROM".

PAPER SLITTING ATTACHMENT FUR PRINTING PRESSES. (Application filed Oct. 20, 1900. I

(No-Nodal.)- 2 Shoots-Shoot 2.-

Iii I! I hi Witnesses. v Ihventor.

n4 M m 2&2 Attorney.

1' NORRIS Pnzas ca Puma-L Tko wAsHmsrou n c U 11 E if PATENT OFFICE.

JOHN F. FROMM, OF ROCHESTER, NEW YORK.

SPECIFICATION forming part of Letters Patent No. 668,915, dated February 26, 1901.

Application filed October 26, 1900. Serial No. 34,490. (No model.)

To aZZ whom it may concern:

Beitknown that I, JOHN F. FRoMM,of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Sliiting Attachments for PrintingPresses; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the drawings forming a part of this specification and to the numerals marked thereon.

My present invention has for its object to provide an improved device for cutting or slitting paper which is capable of attachment to cylinder prin ting-presses in which the sheet to be printed is carried upon a rotary drum or cylinder, whereby the sheet may be slit as it is fed from the table and delivered in the cut or severed condition after the printing operation.

To these and other ends my invention consists in certain improvements and combinations of parts, all as will be hereinafter fully described, and the novel features pointed out in the claims at the end of this specification.

In the drawings, Figure 1 illustrates a slitting device constructed in accordance with my invention, showing its application to a cylinder printing-press. Fig. 2 is an enlarged side elevation of the device, and Fig. 3, a plan view of the attachment. Fig. 4 is a sectional view on the line 3 3 of Fig. 1. Fig. 5 is a similar view on the line 4. a of Fig. 1; and Fig. 6 is a bottom plan View of the supportingarm, showing the adjustable clamping device. Fig. '7 is a side elevation of a modification.

Similar reference-numerals in the several figures illustrate similar parts.

In the present instance I show my device applied to a cylinder printing-press having the finding-table 1 and the impression cylinder or drum 2, provided with the grippers 3, adapted to be operated by any suitable means to grasp the edge of a sheet of paper fed from the table and to carry it around with the cylinder during the printing operation. The

slitting or cutting of, the paper is performed as the sheet is drawn from the table by means of a suitable cutter, and in the present construction of my device I have shown a cutting mechanism adapted to be supported above the cylinder- 2 and in line with the surface of the table. The device is employed in connection with the usual stops or fingers 4, located above the cylinder and against which the edge of each sheet is placed to insure its proper feeding to the cylinder and to cause its proper register with the printing mechanism.

Mounted upon a supporting arm or blade 10, secured, preferably, to the lower side of the table 1 and curved slightly to conform to the circumference of the cylinder, is a rotary cutting-wheel 11, having a knife-edge and adapted to be operated as the paper is fed to the cylinder by means of a driving-wheel 12, frictionally engaging the paper, any suitable form of driving connection being employed between the cutter and the driver 12. Arranged upon t-he end of the arm or blade 10 is a standard, forming a support 13 for the parts, as will be described, having a very narrow base 14, undercut upon its forward edge at and sharpened, as shown, to separate the paper after it has been severed and to allow it to pass the support. Pivotally connected to the upper portion of the support 13 by a screw 13 is a bifurcated supporting-arm 14',carrying between its forward ends the cutting-wheel 11, and to adjust the latter relative to the face of the arm or blade 10 I provide set- screws 15 and 16, arranged upon opposite sides of the pivotal point of said arm; Arranged upon the opposite sides of the arm 14 is a frame, preferably embodying the arms 17, journaled upon the axis 111 of the cuttingwheel 11 and carrying at their outer ends the driving-wheel 12, adapted to be operated by frictional engagement with the surface of the paper as it is drawn beneath it, a small spring 18, operating at the rear ends of the frame, serving to hold the wheel in yielding engagement with the sheet, while a set-screw 19,1imiting its movement, serves as a means for ad justing the arms to raise or lower the driving-wheel to regulate the friction and accommodate paper of various grades or thickness. In order to cut the paper smoothly without causing it to drag as it is drawn upon the cylinder, I revolve the cutting-knife considerably faster than the speed at which the pa per travels and in the direction in which it is moving. In the preferred form of my device I have shown gears 11 and 12 formed upon the sides of the cutting-wheel and drivingwheel, respectively, and arranged between .ble 1.

them to cause their rotation in the-same direction is a small-pinion 20,:carried upon the frame 17, as shown particularly in Fig. 3. A small slit or aperture 21 is provided .inthe support below the rotary knifeto allow the latter to be adjusted relative to the-face of portantto insurezthe proper operation-o'fzthei device and the deliveryof the sheet after it has been severed, and While it may be modified extensively I prefer the form shown in the sectionalyiews, Figs. 4 and 5, inwhich the support is comparatively flat upon its top with the rounded edges, thetlattenedportion, extending slightly beyond'the center of the driving-wheel 12, and from said :point 'itis gradually rounded off to form an arched or crowned portion beneath the center of the knife 11, over which crowning portion the moving paperis drawn andflheld'tightly and smoothly, preventing it from wrinkling or fulling in front of the knife. In order'to shorten the device and make it more compact, I'have shown the driving-wheel provided with an'annular recess in its'peri phery, into which the edge of the cutting-knife may operate.

The device is applicable to all printingpresses of theclass described, and'to perinitf its easy application and removal'I'have provided an adjustable meansfor securing thei arm or'blade 10 to the ways25 usually provided upon the lower side of the'feeding-ta-g Located upon't'ne uppe-rsid-e of the! arm is a stationary clamping-flange 26, cn-l gaging the forward edge of the guide, and a5 movable clamping block or plate'27, engag-E ingthe opposite side of said guide is provided; with a screw or stud 28, operating through; an elongated aperture 29 in the arm, andjis engaged ina cam-slot 30, formed upon one; end of a bell-crank lever 31 pivoted at'32;

and provided with an operating knob orhandle 33. Asmall point or projection 34:, formed upon the inner side of the lever-arm and adapted to engage with depressions or recesses 35 in the proximate face of the support, serves to hold the clamp in adjusted position. A thumb-screw 36 in the rear end of the arm or blade and adapted-to engage the lower side of the table permits the opposite end of the blade and the cutter to be adjusted relative to the face of the drum or cylinder 2, the connection between the arm or blade and the feeding-table being-sufficiently loose to permit this.

InFig. 7 I have shown a modification in which the connection between the drivingwheel and rotary cutter is accomplished by means of a belt 40, extending around the face of the former and over a hub or-pulley 41-0n the latter, and in said figure is also shown a small roller 42, the surface of which may be either plain or provided with an annulargroovein -\vhich.tlie.edge of the cutter operates' The device as a whole is simple and compactand is capable of being easily applied or removed. They may be used either singly ,orseveral.maybeprovided upon a press, and "by its attachment to the table the sheets are slit one at a time as they are fed into the press and while:held and drawn by the grippers on the cylinder, insuring the paper being properly out upon a true line, making a subsequent cutting (or itrimm'ing operation unnecessary.

As the cutters or slitting attachments are secured to the feed-board or to any other equivalent support,-they-maybe readily removed'from-a'bove the cylindei for the purpose of adjustment or inspection when desired.

The cutter might'be rotated by the'direct contact with-thepaper alone, and this, in connection with the crowning paper-supportbeneath it,would beadvantageous; but I prefer -in-practice to drive the cutter positively-in-the manner shown.

I claim as my'i-nrention 1. Ina-paper -slitter,'the combination with a support over which the paper may be passed of arrotary cutting-knife, a driving-wheel en- 1 gaging the face of the'paper and operated by the movement of the latter and operating connections between said wheel and cutter.

2. In a paper-slitte-r,-the combination with asupport over which the paper maybe passed, of arotary cutting-knife,a wheel tricl ionally engaging the paper and driving connections between the wheel and cutterto cause'the operation of the latter in'the direction of-movement of-said paper.

3. In a paper-slitter, the combination with a support over which a sheet of paper may be ipassed of a rotary cutter, a wheel adaptedto 'be operated'by' frictional engagement with the face of the paper, and connections between the wheel and cutter for causing the opera- :tion of the latter at an increased su rface speed relative to that ofthe paper and'in the direction of its movement.

4:. In apaper-slitting device, the combination withasupport, a rotary cutter, and means for adjusting the'latter relative-to the support, of a wheel adapted to be operated by the paper as it is moved across the support and driving connections between the wheel and cutter.

5. In-a-paper-slitting device, the combination-with a support, a rotary cutter and means 'for adjusting the latter relative to the support, of a driving-wheel adapted to'be operated by the paper as it is'moved over the support, means for adjusting the wheel relative to the support and'independently of-the cutter, and operating-connections between the driving-wheel and cutter.

'6. In a paper-slitting device,-the combination with a support, a rotary cutteiyand means for adjusting the latter relative to the sup- IIO port, of a driving-wheel, means for yieldingly supporting the wheel in contact with a sheet of paper as it is passed over the support, an adjusting mechanism for adjusting the wheel relative to the support and driving connec" tions between the wheel and cutter.

7. A paper-slitting device embodyingasupport, a rotary cutter, a driving-wheel connected thereto, an adjusting mechanism for adjusting the wheel and cutter relative to the support and tension devices for holding the driving-wheel in yielding contact with a sheet of paper passed over the support.

8. In a paper-slitting device, the combination with a paper-support, a rotary cutter, a pivoted supporting-arm carrying the cutter and means for adjusting the arm to vary the position of the cutter relative to the support, of an adjustable driving-wheel operating over the paper-support, and a spring for operating the wheel toward the latter.

9. A slitting attachment forprintingpresses embodying a blade extending over the presscylinder, a cutter supported on the blade and cooperating with the latter to sever the paper drawn between them.

10. A slitting attachment for printingpresses embodying a blade adapted to extend over the press-cylinder having the crowning surface and the depression or recess, and a rotary cutter supported above the blade and operating in the depression in the latter to sever the paper drawn between them.

11. A slitting attachment for printingpresses embodying a blade adapted to extend over the press-cylinder having the crowning surface and the depression or recess, and the rotary cutting-disk mounted on the blade operating in the recess and rotated by the paper drawn between the blade and disk.

12. A slitting attachment for printingpresses embodying a blade adapted to extend over the press-cylinder having the crowning surface and the depression or recess, the cutter operating in the recess and a driving wheel connected to the cutter and operated to drive the latter by contact with the moving paper.

13. A slitting attachment for presses embodying a blade or support, a narrow standard thereon, and a cutter supported on the standard, cooperating with the support to sever the paper and means for adjusting said cutter toward and from the support.

14. A slitting attachment for presses embodying a blade or support, a narrow standard thereon a rotary cutter journaled on the standard and cooperating with the support to sever the paper, and a driving-wheel in advance of the cutter and connected to the latter to rotate it.

15. A slitting attachment for presses embodying a blade or support, a narrow standard thereon, a rotary cutterjournaled on the standard and cooperating with the support to sever the paper, a frame movably supported on the standard, a spring for moving the frame toward the support and a driving-wheel on the frame connected to the cutter to rotate it.

16. A slitting attachment for presses embodying a support, a rotary cutter cooperating with the latter to sever the paper drawn between them, and a separate independentlyyielding driving-wheel connected to the cutter and between which and the support the paper is moved.

17. A slitting attachment for presses embodying a blade or support adapted to extend over a press-cylinder, a rotary cutter codpcrating therewith and a driving-wheel located in advance of the cutter and connected to the latterfor operatingit, said wheel being driven by the paper moving beneath it.

18. The combination with a press having a cylinder and grippers thereon, of a slitting attachment embodying a blade or support'extending over the cylinder between the grippers having a cutter thereon cooperating with the blade to sever the paper held upon the cylinder by the grippers.

19. The combination with a press having a cylinder and grippers thereon, and a feedboard, of a slitting device embodying a blade or support secured to the feed-board and extending over the cylinder, a cutter arranged upon the blade or support and cooperating with the latter to sever the paper held by the grippers.

JOHN F. FROMM.

Witnesses:

F. F. CHURCH, G. WILLARD RICH.

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