US243767A

US243767A - Machinery for slitting paper

Info

Publication number: US243767A
Authority: US
Publication date: 1881-07-05
Anticipated expiration: 1898-07-05

Description

(No Model.)

, J. FLANDBRS.

MAGHINERYIOR SLITTING PAPER.

No. 243,767. Patented July 5,1881.

@nu n "ummm UNITED STATES PATENT OFFICE.

JAMES FLANDERS, OF AUGUSTA, MAINE, ASSIGNOR 'IO CYRUS CHAMBERS,

JR., OF PHILADELPHIA, PENNSYLVANIA.

MACHINERY FOR SILITTING PAPER.

SPECIFICATION forming part of Letters Patent No. 243,767, dated July 5, 1881.

Application inea April 13, 1881. (No modem To all 'whom it may concern:

Be it known that I, JAMES FLANnEEs,-of the city of Augusta, inthe county of Kennebec and State of Maine, have invented certain new and useful Improvements in Machinery for Slitting Paper as it Issues from Printing- Presses; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

Figure l is atop view of the machine. Fig. 2 is a longitudinal vertical section. Fig. 3 is a front view of the cylinder and gripers.

The same part is marked by the same letter of reference wherever it occurs in the draw- 1ngs.

' The object of my invention is to provide a convenient means by which paper can be slit while on the cylinder of the printing-press, at the time of printing, so as to cut the sheet in register with the printed matter upon it, and

to save the rehandling of the paper, which would be necessary if it were cut after removal from the press. It is especially adapted and designed for that class of printing-machines in which there is no transfer of the paper to another cylinder from that on which it is carried during lthe operation of printing.

The nature of my invention consists in placing a metallic belt or strip around the drum, above the blanket and tympan-sheet, after the form is made ready,77 and attaching above it a blunt rotary cutter, under which the paper passes and is severed by pressure upon the metallic belt, all as hereinafter more particularly set forth.

In the drawings, A marks the side frame of the press; B, the cross-framing; T, the feedtable; C, the carrying cylinder or drum, provided with the ordinary. gripers, g, operating in the usual way. S is the cylinder-shaft, and P its driving-pulley.

M is the metallic belt, one end of which is fastened to the blanket-hook in the griper-recess, and the other end wound around the Y blanket-roller G, by means of which, with its 5o ratchet r and pawl p, the belt is strained upon the drum and held tightly in place. The belt I prefer to make of hard sheet-brass.

K is the cutter, which has a smooth dull edge and a thick back. It is held on shaft s between disks, on whose edges are rubber bands b b, which run in contact with the belt M and turn the cutter by friction. The cutter-shaft turns in arms E E, attached round bar D, so as to be capable of turning on it. A stationary lug, F, is attached, between arms E E, to the same rod D, by adjusting-screw c, which, pressing upon the cross-bar d, between arms E E, forces the cutter K down upon the belt, so as to sever the paper by crushing apart its fibers as it passes between the cutter-wheel and the strip or belt M. The belt M is placed around the drum inthe line of the marginal spaces on the form, so as notto injure the type or plates.

The operation is as follows: The sheet of paper is fed from the table Tin the usual manner, is held by the gripers g, and carried around by the drum between the cutter-wheel andthe belt M, where it is severed, as before described. 75 As it is carried around it is printed and delivered in the ordinary way; or it may be carried up and over the cylinder again, thus passing the cutter a second time, and be delivered onto the fly above or in front of the cylinder, as now practiced in many presses.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

1. The combination, with the drum of a printing-machine, of a metallic belt or strip and a cutter which acts against it to sever the paper during the process of printing, as described. Y

2. In combination with the drum of a printing-press covered with packing,7 a metallic belt surrounding the packing, and a cutter, under which said belt passes, as described, for the purpose of protecting the blanket and tympansheet from the action of the cutter, as set forth. 8. In combination with the drum of a printing-press, themetallic belt M, placed in the line of the marginal spaces in the form, and a cut ter acting against it to sever the paper on said blunt smooth cutter K, severing the paper by ro line, in the manner specified. pressure upon the belt, as speciied.

4. The combination of the drum C, cutter K, In testimony that I claim the foregoing as arms E E, bar D, lug F, aud set-screws a o, all my own I affix my signature in presence of constructed, arranged, and operating in the two Witnesses.

manner and for the purposes stated. JAMES FLANDERS.

5. The combination, with the drum C, of tbe Witnesses: metallic belt M, strained upon the drum over L. W. MASON,

the packing, in the manner described, and the HARRY SEWALL.