Card – picture – or sign exhibiting – Changing exhibitor – With electric circuit control
Patent
1977-03-28
1980-12-09
Grieb, William H.
Card, picture, or sign exhibiting
Changing exhibitor
With electric circuit control
40472, G09F 1116
Patent
active
042376351
ABSTRACT:
A pair of endless belts of different lengths are intermittently and simultaneously advanced in sequential steps to present first and second indicia behind a viewing window. Each of the indicia on one belt identifies a movable part of a person's body and each of the indicia on the other belt identifies a movement to be performed. The indicia on each belt include a plurality of legends identifying each body part or movement, respectively, but arranged randomly in series on the belts. A selectively operable control serves to vary the time interval between sequential steps.
REFERENCES:
patent: 1564138 (1925-12-01), Rowland
patent: 1634194 (1927-06-01), Jacobs
patent: 1765073 (1930-06-01), Hester et al.
patent: 2260432 (1941-10-01), Brown
patent: 2678692 (1954-05-01), Ranseen
patent: 3024020 (1962-03-01), Alton
patent: 3523374 (1970-08-01), Schuster
Kelly Robert C.
Paraghamian Aram C.
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