Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1977-04-05
1979-07-10
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
360109, 74 892, G11B 556
Patent
active
041610040
ABSTRACT:
A positioning mechanism for a read/write head of recording/playback machine of the type utilizing discs upon which information is magnetically stored in concentric tracks includes a stationary guide member, a carriage which is connected to the guide member and which carries a read/write head for compliance to the surface of a disc upon which information is magnetically stored, a single capstan member which is driven to rotate incrementally from one angular position to another, and a flexible nonstretchable band which is wound at least once about the capstan and which has opposite ends extending from the capstan to connection to the carriage. During the period of rotation of the capstan, one end portion of the band is fed off the capstan while the opposite end portion is concommitantly wound onto the capstan; the tension exerted by the end portion which is wound onto the capstan draws the carriage member into motion relative to the guide member.
REFERENCES:
patent: 1409837 (1922-03-01), Eames
patent: 1730014 (1929-10-01), Reece
patent: 3881189 (1975-04-01), Mayeda
Shugart Associates
Wolff John H.
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