Patent GB-190314545-A (GB)
Title: Improvements in Apparatus for Cutting and Folding Paper and other Fabrics Chiefly Designed for Use in connection with Printing Machines.
Filed: 1903-06-30
Granted: 1903-08-06
Abstract: 14,545. Lake, H. H., [Cottrell & Sons Co., C. B.]. June 30. Associating and collecting-apparatus; cutting-appartus; delivery - apparatus ; folding paper. - Relates to apparatus for cutting and folding paper and other fabrics, chiefly designed for use in connection with printing - machines, Fig. 1 <x> is a front elevation of the delivery end, and Fig. 4 is a transverse section on the line 4-4, Fig. 1 x, of apparatus arranged for cutting printed sheets 22, Fig. 14, from a web w, Fig. 4, collecting and imposing these sheets in pairs on a cylinder B, depositing the sheets upon a table T so that one pair of sheets 2, 3, or 4, Fig. 17, overlaps the preceding one, then cutting the superposed sheets along the lines 20, Fig. 14, and finally folding the sheets into a signature of thirty-two pages. The web w, printed on both sides, is directed by rollers 31, 32, 33 between cutters C, which sever the web into sheets with sixteen pages of printed matter, as shown in Fig. 14. The sheets are directed by guides G to the cylinder B, which is provided with three sets of grippers a', a<2>, a<3>, Fig. 18, mounted on shafts a, and three sets of long thin arms or knockers d', d<2>, d<3> mounted on shafts d. The grippers are opened to receive the sheets, at every rotation of the cylinder, by a stationary cam f, engaging with rollers carried by arms secured to the gripper shafts ; the grippers are closed, in a well-known way, by springs f<1>. The grippers are opened, to release the sheets, at every alternate rotation of the cylinder, by a cam-piece g on a lever g<1>, which is rocked, so as to bring the piece g into contact with the gripper-rollers, by means of a cam i<1> making two revolutions while the cylinder B makes two complete rotations. In this way, each gripper is caused to hold two superposed sheets before delivery. The knockers d', d<2>, d<3>, for pressing the sheets upon the table T, during delivery, are actuated by a cam-piece on a lever which is moved into, and away from, its operative position by means of a cam. The gripper recesses k are provided at intervals with bridging-strips l, to serve as supports for narrow rollers m, which press the sheets against the cylinder. The superposed sheets are carried past cutters E, for cutting the sheets along the lines 20, by an endless rack n, of well-known construction, provided with grippers comprising two members, one fixed to the rack and the other pivoted to the fixed member and constantly pressed towards its closed position by a spring. The tail end of each pivoted member carries a roller 28, which runs along cams p, q, arranged near the table. The cam p is fixed and holds the grippers open as long as their rollers are in contact therewith, and the cam q, for controlling the closing of the grippers, is supported by arms q<1> on a rock-shaft q', which is actuated by an arm q<4> and cam q<5>. The fixed member of each gripper is in the form af a three-pronged fork with two of its prongs serving as a stop, against which the sheets are knocked by oscillating arms t. The endless rack may be driven intermittently by a Geneva-stop mechanism K<1>, J', and toothed gearing. The cutting-apparatus E may comprise a fixed blade v<1> projecting upwards through a slot in the table and a reciprocating blade v, actuated by cams. When the piles of sheet arrive opposite the folding apparatus F, the grippers on the rack n are opened by spring-controlled tappets mounted on a rock-shaft. The folding-apparatus F is of the kind described in Specification No. 3562, A.D. 1901. In a modification of the table T, a portion thereof, on which the sheets are deposited from the cylinder B, is formed as an endless travelling band.