Patent GB-189923324-A (GB)
Title: Cylinder Printing Presses.
Inventor: HARBRIDGE FREDERICK JOHN
Filed: 1899-11-22
Granted: 1900-02-24
Abstract: 23,324. Harbridge, F. J. Nov. 22. C y l i n d e r machines with plane p r i n t i n g-surfaces.- In Fig. 1, A represents the main frame, and B the main driving-shaft geared to the shaft C from which the main parts of the machine are operated. The delivery table D is wedge-shaped in cross-section, and is pivoted on pins d. The hollow cylinder E is mounted on a shaft F supported in eccentric bearings in blocks f in sliding standards G and in blocks f<1> in rocking arms H operated by a connecting- rod I from a crank-pin on the gear-wheel C'. The cylinder E is rotated during its travel by a pinion engaging a rack k. Tracks l, l on the bed-plate I support the inking-rollers 2, 3, 4, the spindles of which are attached by spring connections to rods M actuated by a link m<1> from a pivoted lever M' carrying a roller m<2> running in a cam-groove C<2> on the wheel C<1>. The major ink-distributing roller O is driven by bevel gearing from the shaft C. Two minor ink-distributing rollers Q are mounted beneath the roller O and in contact therewith. These rollers have a reciprocating motion given to them by a series of levers actuated by a cam on the shaft C. An intermediate minor distributing-roller is mounted and actuated in such a way that it is moved alternately into contact with the roller O and a roller mounted in the ink fountain and driven by ratchet gearing actuated by an arm on the shaft N actuated by the rocking arm M above described. The bed-plate I is adjusted vertically by means of wedge-shaped supporting-bars which are regulated in position by a screw adjustment. The feeding-table D is provided with gauge fingers Z mounted on a bow-shaped rod z pivoted at z<3>. A spring z<8> bears upon the end of the rod z, the movement of which is determined by a rod actuated by a cam on the shaft C. The fingers Z are timed to co-act with gripping-fingers mounted in the cylinder E and acting against one edge of a slot formed in the cylinder. The gripping-fingers are operated by an arrangement of slotted levers and cam surfaces acting against springs. The arrangement is not shown in Fig. 1. Projecting pins are provided to raise the sheet free from the periphery of the cylinder after the printing operation, to allow the sheet to be grasped by the delivery fingers. The delivery fingers 21 and 27 are attached to rods 20 and 26 mounted on a bar 19 and provided respectively with springs 30 and 29 which tend to keep the fingers closed. The fingers are opened by means of a cam attached to one of the supporting-rollers of the cylinder engaging pins on the outside delivery fingers 21<1> and 27<1> to enable the sheet to be gripped, and the fingers are opened to drop the sheet by means of a rod 31 connected to the end finger 21<1> and acting against a pin 32 on the frame. The rod 19 forms part of a swinging frame mounted on the shaft 17 and actuated by a link from a lever operated by a cam-wheel on the shaft C. The Specification describes means, not shown in Fig. 1, for tilting the eccentric bearing-blocks f of the shaft F, and thus causing the cylinder E to be raised when the cylinder travels backwards to take up another sheet or when the cylinder fails to take up a sheet and thus to prevent the surface of the cylinder from coming in contact with the inked type.