Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1977-01-31
1978-10-31
Eddleman, Alfred H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
360 12, 360136, G11B 2502, G11B 1902, G11B 576
Patent
active
041237846
ABSTRACT:
A selectable-fraction of revolution tape recorder for reproducing short recorded sounds such as brief words or greetings like "thank you". The recorded sound is recorded in a magnetic sound recording tape or material provided on an outside peripheral surface of a cylindrical part which extends downwardly from the edge of a rotating disc. A pair of switches is provided, one of which is responsive to means carried by the disc and the other of which is physically actuable whereby to initiate and for a predetermined period of time to continue the rotation of the disc. A plurality of switching paths is provided on the disc with recesses extending for different fractional portions of the perimeter of the respective switching path so that appropriate fractions of a revolution of the tape recorder can be selected by selecting an appropriate switching path.
REFERENCES:
patent: 2668718 (1954-02-01), Roberts
patent: 2734033 (1956-02-01), Menard
patent: 2862845 (1958-02-01), Szeguari
patent: 2869966 (1959-01-01), Cunningham
patent: 3409745 (1968-11-01), Kock
patent: 3576953 (1971-05-01), Hauer
Eddleman Alfred H.
Mon Donald D.
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