GB843988A - Improvements in or relating to punching apparatus - Google Patents

Abstract

843,988. Selective punching apparatus. INTERNATIONAL COMPUTORS & TABULATORS Ltd. March 4, 1959 [April 16, 1958], No. 12129/58. Class 31 (2). Punching-apparatus comprises at least one row of punches 4 supported for independent lengthwise movement into and out of punching- relation with a die 2, punch actuators 7, one for each punch, rockable continuously about a rod 9 and supported for selective movement from datum positions thereof into the line of movement of the punches appropriated thereto so that rocking movement thereof effects lengthwise punching movement of the punches, and restoring-bars 36 operable to restore punches and actuators to the datum positions thereof. The actuators for each row of punches are rockable about a rod 9 by a continuouslyrotatable eccentrically-mounted roller 10 common thereto. Each restoring-bar 36 is movable in recesses 37 formed in the actuators so as to permit movement of selected ones of the actuators relative to the other actuators of a row while such other actuators remain in the datum positions thereof. Each punch is associated with a punch-bar 6, Fig. 4, the upper ends of the punch-bars being arranged in echelon, Fig. 1, and the rows of actuators being superimposed in two opposite groups for co-operation with the rows of punches appropriate thereto. The restoring-bars for each group of actuators are connected in common to a link 41, Fig. 1, the links being connected to each other by a connecting-bar 42 and pivotally-mounted bellcrank levers 43, and the connecting-bar being connected with an operating-link 45 lengthwise movement of which effects simultaneous movement of all the restoring-bars. Movement of an actuator into the line of movement of the punch appropriate thereto is effected by a rod-like element 27 movable lengthwise by a thrust-pin 29 which is movable axially with the plunger 30 of a solenoid 31 when the latter is energized.