Card selector device

Details Card selector device Card selector device

1978-04-10

1980-09-16

Thesz, Joseph M.

Registers

Platform operated

Platform actuated traffic counters

209564, 235 92GE, 235 92CT, G06F 738

Patent

active

042232120

ABSTRACT:
A film card selection device for use in an automatic microfilm display apparatus is provided with a switch for sensing that a film card has been selected. A counter counts the number of drive gear teeth passing a selected point after selection of a film card so that the apparatus can be stopped with the selected card in position for retrieval.

REFERENCES:
patent: 3429436 (1969-02-01), Irasek
patent: 3543929 (1970-12-01), Mattia et al.
patent: 3800942 (1974-04-01), Junichi Hirata et al.

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