The IBM Reproducer - IBM 1401

From AccumulatedEarnings CardFigure 4.Not availablefrom AccumulatedEarnings CardPath of Cards in a Reproducing OperationFigures 6 and 7 are schematics of the paths cards follow in going fromhopper to stacker in the IBRT 514. Reproducing the required informationfrom the accumulated earnings card into the attendance card isaccomplished as follows :1. The accumulated earnings cards are placed in the feed hopperof the reading unit, the unpunched (blank) attendance cards areplaced in the feed hopper of the punching unit.2. The cards in both hoppers are automatically fed in synchronismafter certain switches are set and the start button depressed.3. As an accumulated earnings card passes the first set of 80 readingbrushes (one brush for each card column), a blank attendance cardpasses the 80 punching dies (one punch die for each card column).Although each reproducing brush provides an impulse when it detectsa hole, only those brushes which provide impulses from the requiredcolumns are chosen for use.The punch dies which correspond to the columns of each blank attendancecard into which the required information is reproduced arechosen to receive the impulse from the proper reproducing brush.