Patent GB-447041-A (GB)
Title: Improvements in and relating to printing machines
IPC: B41L47/58
Filed: 1934-09-04
Abstract: 447,041. Addressing and like machines. ADDRESSOGRAPH CO., 1814, East 40th Street, Cleveland, Ohio, and GOLLWITZER, W. T., 901, West Van Buren Street, Chicago, both in U.S.A. Sept. 4, 1934, No. 26464. [Class 100 (ii)] In a printing-machine in which groups of printing-devices are moved through the machine, mechanism is provided for indicating the number of devices in a group being moved through the machine. The machine described includes list-feeding and impression mechanism which forms the subject-matter of Specification 447,087, [Group XX]. (1) Printing-devices D, Fig. 12, are fed from a magazine to an anvil A by pawls 15 on carrier-bars 16 reciprocated from a main drive rocker 17 through a bell-crank 27 connected to arms 31 linked to the bars 16. A pawl 114 connecting the crank 27 to the arms 31 is tripped to suspend the feed by an arm 113 actuated from the lever 97 referred to in (2) below, when the list-carriage is moved transversely for printing the address. (2) The impression-mechanism is similar to that described in Specification 372,514 and comprises platens P, P<1>, Fig. 4, normally held in cocked position and releasable manually by pressing levers 39, or automatically by the oscillation of a bell-crank 48 carrying a pin 50 engaging either of two rods 51, 52 adapted to release the platens P<1>, P respectively, in accordance with the position of an arm 55 through which the rods are passed. When the list-sheet is moved transversely to receive an address as described in (3) below, a cam 98, Fig. 8, on the bracket 61 rocks a.lever 97 which, through a link 100, rocks the arm 55 to move the rod 52 into line with the pin 50 so that the appropriate platen is released. (3) One side edge of a listsheet is gripped by a clamp 57, Fig. 8, secured to a carriage 60, 61 moved transversely to bring the address-column under the platen P by mechanism operated from the rocker 17 and adapted to actuate a slide 84 attached to the carriage, the clamp being moved longitudinally correctly to position the sheet. The mechanism for moving the carriage transversely comprises an oscillating pinion 71, Fig. 11, fixed to a disc 78 carrying a pawl engaging notches in a crank disc 81 actuating a rod 83 connected to the carriage 60, 61. To avoid movement of the carriage when a follower arrives in printing position, the pawl is tripped by a lever 89 oscillated by an electromagnet 87, and to ensure return of the lister to its normal transverse position, a boss on the disc 78 holds the lever off the pawl at the time when the pawl is intended to engage the disc 81 for the second half-rotation thereof. The list-sheet is advanced intermittently for spacing the impressions by spacing and locking racks 66, 66<1>, Fig. 8, similar to those described in Specification 372,514, the spacing-rack being actuated from the rocker 17 through a catch, which is disengaged by an arm fixed to the shaft 97 whenever an address is being printed. (4) A numbering-device 132, Figs. 4 and 11, situated at printing position is supported by a pivoted shelf 133 adapted to be raised and lowered by an arm 138 connected by a link 141 to an arm 142 which is raised at each actuation of the drive rocker 17 and then falls towards an arm 146, which meanwhile has been set in either of two positions by a detector 153. When an appropriate tab is present on the plate, the detector is lowered thereby and the arm 146 is set so that the arm 142 falls until a pin thereon enters a notch on the arm 146, this movement of the arm 142 causing the numbering-device 132 to be raised into operative position ; on the return of the parts to normal position, a lever 134 advances the number wheels. If no tab is present, the device remains in an inoperative position. The tabs are switch tabs, and, when new plates are introduced into the sequence, the corresponding tabs are swung into inoperative positions to avoid numbering. Where, however, numbering is required from both new and old plates in one passage through the machine, an additional detector 153 is attached. (5) A special tab is provided which is a full tab in the case of a leader with followers and a half tab where there are no followers. A full tab operates a detector to close contacts 167, 168, Fig. 12, whereby when the plate moves on to the anvil the machine is stopped and one of a series of lamps 161, Fig. 11, lights up. In addition, a detector 194 at printing position is closed and a second lamp lights up, indicating to the operator that the plate in printing position has one or more followers so that he can determine whether or not there is sufficient space left on the sheet to receive the whole of the matter. Where there are two or more followers, each of these engages a switch in the guideway and closes a switch to light up a corresponding lamp. If desired, means for indicating the number of followers may be associated with the lenses of the lamp. When the last line of a list-sheet is printed, a finger 222, Fig. 8, on the list-carriage closes a switch to stop the machine. (6) The plates consist of leaders bearing addresses and property description and one or more followers completing the property description items, the name &c. being required in one column of a tax list and the information in other columns.