Patent GB-629105-A (GB)
Title: Improvements in or relating to control mechanism particularly for material handling apparatus and the like
IPC: B41F13/00
Filed: 1945-03-12
Abstract: 629,105. Sheet - delivery apparatus. STEVENS, A. H. (Miller Printing Machinery Co.). March 12, 1945, No. 6140. [Class 100 (i)] [Also in Group XXX] Two machines, which may be a printing machine and a delivery apparatus, operating on material such as sheets or other flat articles delivered from one machine to the other, are held in cooperative relationship for use by a device located between the machines, a single control device being provided for controlling operation of mechanism for releasing the connecting-device and of mechanism for separating the machines when not required for use. As shown, delivery apparatus 3, Fig. 1a, is movable towards and from a printing press 2 and is automatically coupled thereto or uncoupled therefrom by screws 16, 18, rotated by a reversible motor, a delivery carriage 36 being automatically rocked into and out of operative position, all as described in Specification 549,622. The various parts of the delivery apparatus are driven from a gear 79 on the printing press through a crank 85, connecting-rod 87 and a crosshead carrying a pin 88 over which is hooked a link 77 connected at 76 to a drive-lever 75 rocking about a pivot 74 in the frame of the frame of the delivery apparatus. On turning a handle 90 two revolutions counter-clockwise to initiate uncoupling, a shaft 92 is rotated therefrom by gearing, and an arm 94 fixed to the shaft rocks a bell-crank 100 through a link 96 whereby an upward pull is exerted on a rod connected to the link 77. An eccentric-sheave on the shaft 92 actuates a rod 109 pressed upwardly against a fulcrum pin 111 by a spring 113, whereby a latch 110 on the end of the rod is disengaged from a latch-plate 116 on the press. On reverse rotation of the handle 90, the link 77 is lowered, and, as the delivery apparatus approaches the press, an incline 106 on the hook 77 engages the pin 88 so that the hook rides up and on to the pin to couple up. At the same time, an incline 117 on the latch 110 rides down on the plate 116. The movement of the delivery apparatus is arrested when still a fraction of an inch away from the press, whereupon the handle 90 is turned counterclockwise less than two revolutions to cause the eccentric rod 109 to move to the left and through the latch 110 draw the delivery apparatus firmly up to the press. The sheets are taken from tapes 62 by the tapes of a carriage reciprocated by chains 136 on sprockets driven by gearing from the lever 75. To ensure that the carriage is at its extreme left position when the delivery apparatus is moved away from the press, a spring-pressed pin 196 is provided which rocks the lever 75 counterclockwise when the hook 77 is released from the pin 88. A switch-arm on shaft 92 operates a switch to close the motor circuit, and a member 121 on the press operates a switch to stop the motor when the delivery apparatus is the correct distance from the press. A second switch arm 108 on the shaft 92 operates a switch to start the motor for the reverse movement, and an arm on the link 87 operates a switch to stop the motor. Sheet-receiver. The sheets are delivered on to a pile-support 165, Fig. 5, supported by cables 166 passing over pulleys 162 fixed to a shaft 161 rotated intermittently to lower the table. Sheet-joggers. Rear joggers 183, Fig. 5, are fixed to a rod 182 carried by reciprocating rods 174 acting through bell-cranks 185 to move rods 188 in opposite directions, side joggers 189 being carried by rods 219 fixed to brackets 218 on the rods 188. The rods 174 are connected to arms 173 fixed to a shaft 170 and reciprocated by an oscillating cam 169 engaging a roller 172 on an arm 171 which is loose on the shaft 170 and acts on an arm 210 fixed to that shaft, through a spring 213 whereby a resilient pressure is exerted on the joggers. The amplitude of movement of the joggers is controlled by adjusting a cam 176 fixed to a shaft 177 turned by a hand-lever 178 held in any one of a number of positions. The cam 176 acts as a stop for an arm 175 fixed to the shaft 170 and so determines the position to which the rods 174 and arms 210 and 171 return. The arm 171 under the influence of a spring 208 retracts the joggers by means of an integral arm engaging a pin on the arm 210.