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Philco High Speed Card Reader

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1 Author(s)
N. Emslie ; Computer Division Philco Corporation

This paper describes the mechanical and electrical design and operating characteristics of a high speed tabulating card reader. This unit, a prime input device to the Philco 2000 Computer System, handles, and reads and checks cards at a peak rate of 38 full size tabulating cards per second. Design problem solutions in the picking and stacking area which make novel use o wrap clutches to provide an indexing card pick and an incremental stacking sensor are described in detail. The characteristics of the photosensitive reading station are also discussed.

Published in:

IRE Transactions on Product Engineering and Production  (Volume:5 ,  Issue: 2 )