Registers – Voting machines – Key set
Patent
1974-06-03
1976-01-27
Tomsky, Stephen J.
Registers
Voting machines
Key set
235 54D, 235 55A, G07C 1300
Patent
active
039347940
ABSTRACT:
A voting machine includes a band interlock system for limiting the number of selections made. A plurality of aligned moveable selector keys are provided with cam surfaces on each key shaft. A rotatable column locking mechanism is mounted adjacent each key having a pair of removeable pins, one pivotal about the other. A slide device connects each key with the adjacent locking mechanism to rotate the mechanism as the key is depressed. A metal interlock band is threaded between each pair of removeable pins of selected column locking mechanisms to interconnect the corresponding voting keys. The interlock band is secured between clamps with a predetermined amount of slack. As each selection is made, the locking mechanism corresponding to the voted selection key pivots to reduce the slack in the interlock band. After a certain number of selections, the slack in the interlock band has been eliminated and the band is taut against the selected locking mechanism so that additional mechanisms cannot be rotated. The blocked locking mechanisms in turn prevent further voting acting through their corresponding slide devices which abut the cam surfaces of the voting keys. A row locking mechanism is also disposed adjacent each selector key for interconnecting the key with other selector keys in the same row or in other rows.
REFERENCES:
patent: 693039 (1902-02-01), Luellen
patent: 856997 (1907-06-01), Cutter et al.
patent: 2110297 (1938-03-01), Gustavson
The Riverside Press, Inc.
Tomsky Stephen J.
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