Keyboard operated mechanical machines for perforat

专利名称：Keyboard operated mechanical machines for

perforating cards

发明人：JOHNSON WILLIAM EDWARD,BOXALL

DONALD EDWARD

申请号：US33662453申请日：19530212公开号：US2716453A公开日：19550830

摘要：703,315. Selective punching-machines. POWERS-SAMAS ACCOUNTING

MACHINES, Ltd. Jan. 30, 1953 [March 25, 1952], No. 7694/52. Class 31 (2) In a machine forperforating record cards of the kind described in Specification 328,255, [Class 31 (ii)],which is referred to, i.e. including a keyboard having spring-restored keys 20, columns ofpunches settable by set bars (58, Fig. 6 (not shown)) selectively operable by a column ofinterponents 38, one for each punch of a column, pivotally mounted on a rocking spindle37 supported on a carriage 35 movable stepwise to dispose the interponents oversuccessive columns of set bars, an interponent being movable angularly about the pivotfrom an inactive to active position to effect operation of a set bar, apparatus is providedcomprising conditioning means individual to each interponent and operable by

depression of a key appropriated thereto to condition the interponent for movement tothe active position thereof, a power operated actuator member 48 common to all theinterponents to move conditioned ones thereof angularly about their pivot to effectoperation of set bars, driving means effective to operate the member 48 when all keysappropriated to the said interponents are in their restored condition, and interrupter

means active during depression of any key appropriated to an interponent to render thedriving means ineffective to operate the member 48. The conditioning means comprisesfor each interponent a latch 43, Fig. 5, pivoted on the interponent and spring-urged toinactive position from which it is moved to active position by a conditioning cable 34operated by a key appropriated thereto, a hook 45 on said latch being movable into thepath of the member 48 whereby when the latter is operated the hook is engagedthereby to effect movement of its interponent to active position. The driving meanscomprises an actuator cable 57 to effect angular movement of an operating lever 56secured to the rocking spindle 37, one end of the cable 57 being connected to a rockableoperating arm 75, Fig. 10, which carries a rotatable cam 72 adapted to be engaged withand disengaged from a continuously-rotated driving roller 71, a lever 83 pivoted on thearm 75 and spring- urged into engagement with one of a pair of abutments 86 extendinglaterally from the cam tending to turn the cam into engagement with the roller 71. Theinterrupter means comprises a cable 33 and a trip latch 79 pivotally mounted on the arm75, the latch being provided with two stops 78, 88, successively engageable by one of apair of stop pins 77 extending laterally from the cam 72, the stops being spaced apart topermit the stop pin to pass therebetween, the stop pin being engaged by the stop 78prior to actuation of a key and by the stop 88 when the cable 33 is rendered active bydepression of a key, the stop pin being disengaged from the stop 88 when the cable 33 isrendered inactive by the restoration of the key to its normal position thereby permittingthe lever 83 to move the cam 72 into engagement with the driving roller 71 for rotationthereby until it is again arrested by the stop 78. The cable 33 is moved from the inactiveto active position by means of a pivoted element 30, Fig. 1, having associated therewith acrank comprising a plate 24, spindle 25, arm 26, and pin 27, which is operated by a collar23 on a, key when the latter is depressed.. In a modification, Figs. 14 to 16 (not shown),the interrupter cable is omitted and the interrupter means comprises a solenoid thearmature of which is connected to the trip latch, the solenoid circuit having a normally-open switch which is closed by the pivoted element to energize the solenoid, and having

a control switch which is operated to close the solenoid circuit only when the returnmechanism for the carriage is inoperative.

申请人：POWERS-SAMAS ACCOUNTING MACHINES LIMITED

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