The IBM Reproducer - IBM 1401

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Compari~ig Cards from an InterspersedGang-Punching OperationThe simple technique for verifying the punching of date in the attendancecard is not possihle for the serial number operation. However,it is possible to utilize the same comparing magnets for the interspersedgang-punching operation as were used for the reproducing operation.After a batch of cards (perhaps 150) are gang-pnched, they areremoved from the punch stacker and placed in the hopper of the readunit. (This allows concurrent gang-punching and comparing. ) Impulsesfrom the card at the comparing brushes are wired to one side ofa comparing magnet. Impulses from the card at the reproducing ])rushesare wired to the other side of the comparing magnet (see Figure 22a).As can be seen from the diagram, if an unbalance occurs it will causethe InM 5141 to stop. Figure 221) shows a condition which causes thecomparing magnet to become nccdlessly unl,alanced, which results inan unnecessary stop. Therefore, it is required that when this type ofmaster. gang-punched card condition exists, comparing should be suspended.The technique used to suspend comparing is based on the sameprinciple employed in suspending punching. Figure 23 is a schematicshowing the location of RX })rushes. The 13-timed impulses they provideare avai1al)lc from J,5-9 on the control panel. When the RX brushhuh impulses either of the joined RX hubs (H,5-6), comparing issuspended for the following cycle.17. Add to Figure 21 the wiring required to compare thepunching of columns 61 -64 of successive cards, and thewiring required to suspend comparing. Assume thatKX brush 3 is positioned over column I. (Use comparirtgmagnets 61 -64.)11Off set Interspersed Gang PunchingOccasionally a gang-punching operation involves master card datawhich is not in the same card columns as those in which it is to be gangpunched.For example, it may be required that each employee of amanufacturing coilcern he provided with two cards, punched in columns1-10 with his last name. The accumulated earnings cards, withlast name in columns 30-443 and an X punch in column 1, are used forthe master card. Figure 24 represents schematically what columns areinvolved in this operation.The only difference between offset interspersed gang punching andregular gang punching is that the 514 must select the origin of the impulses(either from punch brushes 30-39 or 1-10). Since there is noway of deactivating punch brushes, a device must be available into
READ UNIT 1IGong-PunchedMasterCardGang- PunchedCardREAD UNITGang- PunchedCard-II-STOPm?COMPARINGMAGNETMAGNETMaster card at comparing brushes.Gang-punched card at reproducingbrushes.Figure 220.Gang-punched cards at comparingI and reproducing brushes'IIIREAD UNITMasterCardGar lg-PunchedCardICOMPARINGMAGNETGang-punched card from previous group at comparing brushes.New master card at reproducing brushes.Figure 22b.
Page 5: IBM 514 Reproducing Punch
Page 9 and 10: From AccumulatedEarnings CardFigure
Page 11 and 12: READ UNITFeed HopperBrushesARead Un
Page 13: READ UNIT PUNCH UNITFigure 7.Feed H
Page 18 and 19: Setting Up the Reproducing PunchThe
Page 20 and 21: A wire insertedinto a hub \1touches
Page 22 and 23: Part B. For this reason, a wiring d
Page 24 and 25: Note: The wiring from the reproduci
Page 26: 10. Add to the diugrurr~ which you
Page 29 and 30: PX brushPUNCH UNITFeed Hopper/Punch
Page 31: Figure 21 shows the control panel w
Page 35: aIMisc.data1-294lastname30-39Iname1
Page 38 and 39: 'thus it is two card cycles after t
Page 40 and 41: nSource of CurrentD HubsPFigure 28.
Page 42 and 43: 'This card has been sodesigned that
Page 44 and 45: Arlswers to Asterisked Questions2.
Page 46 and 47: 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0
Page 48 and 49: 11. The new master card is treated
Page 50 and 51: 23 (b) .*In order to el iminate the
Page 52 and 53: 5 REPRODUCING BRUSHES 15 100 0 0 0
Page 54: Data Pitxmstng Dfvidan112 East* Pbg

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