Rollers with plural detents

Details Rollers with plural detents Rollers with plural detents

1976-06-28

1977-05-31

Skogquist, Harland S.

Registers

Coded record sensors

Particular sensor structure

40 774, 235131FD, G09B 120

Patent

active

040260437

ABSTRACT:
A word forming device for use in teaching and related applications including a plurality of juxtaposed rotatable wheels, each having on a peripheral surface thereof the characters of the alphabet. The wheels rotate about a common axis and are provided with novel detent means permitting rows of characters to be aligned to form a word or words appearing beneath an elongated opening in a casing. The casing has a larger opening in a rearwardly facing surface thereof to permit manual manipulation of each of the wheels.

REFERENCES:
patent: 1470845 (1923-10-01), Johnson
patent: 1781055 (1930-11-01), Dudley
patent: 2476580 (1949-07-01), Bergman
patent: 3784197 (1974-01-01), Massicotte

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