Patent GB-380167-A (GB)
Title: Improvements in or relating to printing machines primarily intended for the numbering of sheets
IPC: B41F33/00
Filed: 1931-06-22
Abstract: 380,167. Printing-machines. HALLEY, J., 82, Beeches Road, HALLEY, J. M., Creag Mhor, Charlemont Avenue, both in West Bromwich, Staffordshire, and HALLEY, A. M., 159, Knightlow Road, Harborne, Birmingham. June 22, 1931, No. 17950. [Class 100 (ii).] In a number-printing machine of the kind in which the numbering head is carried by a rotary member co-operating with an impression cylinder, means being provided to move the device for actuating the number-changing mechanism into an inoperative position upon misfeeding of a sheet, this device is mounted for movement in a direction parallel to the axis of the rotary member. The numbering head 5 is adjustably fixed by a bolt 5a in one of a number of slots 6a in a disc 6 secured in any desired position on a shaft 7 by a screw 6b. The changing of the numbers is effected by the engagement of a trigger 5b on the head with a cam groove 8a in a member 8 which is normally stationary but is movable parallel to the shaft 7 into an inoperative position. The member 8 is fixed to a bar 9 carried at its ends by yokes 10 fixed to rods 11 slidable axially in the frame 12. One of the yokes 10 is connected by a rod 13 to a lever 14 fulcrumed at 15 and connected by a link 16 to one end of a lever 17, the other end of which carries a rod 19 guided in a sleeve 20a. A second rod 20 guided in the sleeve 20a is connected to one arm of a bell-crank lever 21, the other arm of which is connected by a, screw 22 to the eccentric bearing 23 of the impression cylinder 25. A stud 21a on the lever 21 cooperates with a pawl 26 pivoted to a lever 27 oscillated by a cam 28 and roller 27a. The pawl 26 is normally held clear of the stud 21a by lever connections 30, 31 to a known form of feeler device controlled by the sheets as they are fed to the machine, but when a sheet is misfed, the pawl 26 engages the stud 21a so that on the next upward movement of the lever 27 the lever 21 is actuated to trip the cylinder 25 and, through the linkage 20, 19, 17, 16, 14, 13, to move the member 8 into the inoperative position. The machine is also adapted for repeat printing of the numbers. As shown, for printing each number three times, a ratchet wheel 34 with twelve teeth and a disc 36 with four depressions 36a are mounted on a spindle 35 and a pawl 33b is pivoted to the lever 27 and is also connected by a slotted link 32 with the lever 31. A roller 37 engaging the edge of the disc 36 is carried by a lever 38 pivoted at 38a to the frame and connected by a link 39 to a rod 40 pivoted to the end of the lever 27 and having a tooth 40a to co-operate with a pin 19a projecting from the rod 19. When the roller 37 engages one of the depressions 36a, the tooth 40a is clear of the pin 19a and the member 8 is in operative position, but when the roller 37 is out of the depression the tooth 40a engages the pin 19a and the member 8 is held inoperative until the roller 37 engages the next depression 36a. When a misfeed of a sheet occurs the pawl 33b is withdrawn from the ratchet wheel 34 by the link 32. Detachable carriers to hold stereotype or other printing plates may be secured to the disc 6 and used with or without the numbering head 5.