Electrical pulse counters – pulse dividers – or shift registers: c – Applications – Counting animate or inanimate entities
Patent
1980-07-09
1983-05-24
Thomas, James D.
Electrical pulse counters, pulse dividers, or shift registers: c
Applications
Counting animate or inanimate entities
271 95, G06M 902
Patent
active
043852297
ABSTRACT:
The apparatus comprises a plurality of vacuum operated sheet moving organs mounted on a rotating counting disc which activates a counter each time a sheet is engaged by one of the sheet removing organs and moved from a first to a second position during the counting cycle, the counter actuating mechanism including a vacuum switch to inhibit the actuation of the counter if the vacuum to the sheet moving organs falls below a predetermined level due to the failure of the sheet moving organs to make proper contact with the sheets being counted, and a delay mechanism operative to prevent the vacuum switch from inhibiting actuation of the counter in the event of a momentary drop in the vacuum level upon improper initial contact of the sheet moving organs with the sheets but where proper contact is established before a predetermined position in the counting cycle is reached.
REFERENCES:
patent: 2912242 (1959-11-01), Richardson
patent: 3001704 (1961-09-01), Lafaurie
patent: 3437798 (1969-04-01), Stringer
patent: 3437799 (1969-04-01), Upshur
patent: 3587414 (1971-06-01), Rappaport
patent: 4064391 (1977-12-01), Kokubo
Beran James T.
De La Rue Systems Limited
Thomas James D.
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