Teaching typewriter

Details Teaching typewriter Teaching typewriter

1976-06-21

1977-11-01

Skogquist, Harland S.

Textiles: fiber preparation

197107, G09B 1300

Patent

active

040559050

ABSTRACT:
A system for facilitating the learning of typing by permitting only the proper finger to operate each key. The operator wears a pair of gloves having each finger wired separately to a group of electromechanical devices each for enabling or inhibiting depressing of a key depending upon whether the proper key is being depressed. Each finger has a conductive pad which completes a circuit upon contact with or slight depression of the proper key, or at least proper group of keys, for operating the electromechanical device associated with that key to enable operation of the key. A separate enabling circuit is associated with each finger. If an improper finger is used to depress a key then the circuit is not completed through the finger wire and associated conductive path and the key that is about to be depressed has its associated electromechanical device in a position to inhibit operation of that key. The circuitry of this system comprises a transformer having ten independent secondary coils each one associated with a finger (or thumb) for operating a fixed number of relays each associated with a key of the typewriter. The circuit for operating a relay coil is completed through a conductive tab on the key and contacts associated with and responsive to at least slight depression of the key.

REFERENCES:
patent: 3166856 (1965-01-01), Uttal
patent: 3234664 (1966-02-01), Yaeger
patent: 3573372 (1971-04-01), Talone
"Improved Educational Dissectible Transformer", p. 371, L. E. Knott, Apparatus Co. Catalogue, Rec'd. Jan. 1917.

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