Measuring and testing – Sheet – woven fabric or fiber
Patent
1982-09-02
1984-05-22
Reeves, Robert B.
Measuring and testing
Sheet, woven fabric or fiber
200 6141, 200330, 200 6113, 209603, 209604, 271263, G01B 506, B65H 712
Patent
active
044493991
ABSTRACT:
A double detect device includes first and second parallel and superposed rows of steel balls retained in a block, the first row being in contact with a steel roller whose axis is parallel to the rows of balls. An actuating rod is urged resiliently against an end ball of the second row. In operation, currency notes are fed between the roller and the first row of balls. The passage of a note through the device depresses the balls of the first row thereby urging apart the balls of the second row so as to move the rod. If two superposed notes pass through the device movement of the rod is sufficient to actuate a switch. The device can distinguish between multiple notes and a single note having a localized increase in thickness, since such single note does not move the rod sufficiently to actuate the switch.
REFERENCES:
patent: 2303681 (1942-12-01), Buccicone
patent: 2337064 (1943-12-01), Peters
patent: 3354273 (1967-11-01), Bleiman
patent: 4068385 (1978-01-01), Mitzel
patent: 4073488 (1978-02-01), Uchida
patent: 4365508 (1982-12-01), Loftus
Cavender J. T.
NCR Corporation
Reeves Robert B.
Sessler Jr. Albert L.
Wacyra Edward M.
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