Patent GB-191005671-A (GB)
Title: Improvements in Printing Machines.
Inventor: NEWTON PHILIP ARTHUR
IPC: B41F13/64
Filed: 1910-03-07
Granted: 1911-02-09
Abstract: 5671. Newton, P. A., [Hoe & Co., R.]. March 7. Associating, cutting, and delivery apparatus; gripper mechanism.-In a machine for associating sheets cut from a printed web with specially printed sheets such as covers or inset sheets printed in colours, the special sheets are cut by members which are moved radially on the cutting-cylinders in and out of cutting position, and these sheets are forwarded to the associating - cylinders by grippers. As shown, an associating - cylinder 2, Fig. 3, provided with three sets of grippers 23 receives sheets cut from a web W, and these are associated with specially printed sheets X fed along either or both of the guides 8, 9, the sheets X being of double the length of the sheets cut from the web W. The sheets X are severed in two by cutting-members 14, 20 on a transferring cylinder 11 and a cylinder 10 of half the size of cylinder 11, and the leading edge of the front cut sheet is carried direct to the grippers 23 and associated with two sheets from the web W. The leading edge of the rear cut sheet is carried round the cylinder 10 by the grippers 21 transferred to grippers 12 on the cylinder 11, and is then transferred from the grippers 12 to the grippers 23 and received by the second gripper from the one which received the first half of sheet X. In order that the sheets X may be associated with " fours " of the sheets W instead of " twos " as above described, the grippers 12, 21 and the cutters 14 are operated in a variable manner. The cutters 14 are moved radially from the cylinder 11 at the proper time to co-operate with the member 20 by means of arms 18 on a rock - shaft 17, which arms engage openings in a bar 15 to which the knife is attached. The shaft 17 is operated by a roll 27 on an arm 26 and by a freely mounted cam 28 which is driven by a gear wheel on the shaft 29 of the cylinder 11, and one or other of two sets of gearing, each set comprising one eccentrically mounted gear wheel which can be moved in and out of gear with the wheel on the shaft 29. The cam 28 is thus driven at a half or a quarter of the speed of the shaft 29 and the knife 14 acts once in every two or four revolutions of the shaft 29. The knife 14 is moved into the cylinder 11 before grippers 21 seize the sheet, and a spring - pressed bar 42 arranged near the knife holds the sheet until it is gripped by the grippers 21. The grippers 21 are actuated by a gear 46 and a pivoted sector 47, the sector being rocked at the required times by a swinging cam 51 actuated by a rod 54 with a roller 58, which is engaged by a cam 56 fixed to the shaft 57 of one of the web-cutting rolls 6, or the roller may engage a cam freely mounted on the shaft 57 and driven at a lower speed. The grippers 12 are operated to take the sheet from the grippers 21 by means of a roll 70 on the shaft 13 of the grippers 12, which roll engages a projection 71 on a cam-actuated lever 72, and by means of a stationary cam 68, which engages a roll 67 on arms 66 fixed to a shaft 65 on which are arms 64 carrying the shaft 13, the part 83 of the cam 68 causing the grippers to move towards an abutment on which they clamp the sheet received from the grippers 21. The lever 72 is put out of action by a cam 77 which may be fixed on a shaft 78 or be freely mounted and driven at a different speed from the shaft, and, as the lever 72 is moved out of its operative position, the active parts of the cam 68 are covered over by a circular part 86 on an arm 85, which is moved towards the shaft 29 by a lever 90 actuated by the arm 75 of lever 72. In a modification, a cylinder similar to the cylinder 11 is fitted with two sets of grippers and two cutters. In a further modification, a transferring cylinder 113, Fig. 15, is fitted with two sets of cutting-matrices 115, 116 which are moved in the same way as the knives 14, Fig. 3, and with two sets of grippers. Near the matrices 115, 116 are fitted abutments 119 for the grippers 118. The associated products are delivered by suitable mechanism.