GB1315332A - Document coder - Google Patents

Abstract

1315332 Selective punching apparatus OK PARTNERSHIP 5 May 1970 [13 June 1969] 21664/70 Heading B4B A selective punching apparatus for removing portions from an edge of a card 23 comprises a number of punch and die assemblies arranged along the edge of a card receiving slot 29. The slot 29 is provided in a carriage 22 formed from two plates 27, 28 separated by spacers 30, 31, the carriage being slidable on rails 36, 37, Figs. 1 and 9, which are mounted on a frame 14, 15; the card is urged against the spacer 30, Fig. 3, by a spring-loaded pivoted plate 40. The card is clamped in the slot by means of gripping pads 57, 58 mounted on leaf springs 51, 52, the pads passing through clearance holes in the plate 27. The pads are lifted out of gripping contact with the card by means of a rod 62 actuated by a cam surface 76, Fig. 3, provided on a pivoted actuator 70; the actuator is operated by a lever 71. The carriage is indexed along the rails by means of a ratchet-and-pawl device 136, 138, 144, Fig. 1, the pawls 136, 138 being relatively slidable on the plate 28. The ratchet member is mounted on the rail 37 which may be pivoted by means of a selectively-actuated solenoid 147, 148, thereby allowing the carriage to be moved along the rails one tooth space at a time. The punch- and-die assemblies are each in the form of a tubular bushing 80 in which is slidable a punch 87, the bushing being formed with a flange 83, Fig. 6, so that the bushing may be locked in a housing 13 by a screw 78. The punches are connected via levers 106, Fig. 9, to the armatures 121 of solenoids 120, the punching being effected when the solenoids are selectively energized. The operative ends 88 of the punches are inclined in order to reduce the load on the solenoids. (For Figures see next column.)