Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1978-10-12
1980-03-11
Tupper, Robert S.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
360 99, 36013034, G11B 554, G11B 5016, G11B 2122
Patent
active
041931025
ABSTRACT:
A disk file machine having a transducer or a pressure pad opposite a transducer movable to engage a magnetic disk rotatably disposed in a magnetic diskette assembly in the machine and having a pressure plate opposite a platen portion for holding the disk in a proper data transferring plane, and a manually operable knob mechanically connected with the movable transducer or pressure pad and with the pressure plate for moving these parts from original positions, which are widely separated from the opposite parts to allow positioning of a magnetic diskette in the machine, to intermediate positions in which the spacing is less. The machine includes a solenoid mechanically connected with the movable transducer or pressure pad and mechanically connected with the pressure plate for moving these parts from their intermediate positions to final positions in which the movable transducer or pressure pad engages the disk and in which the pressure plate grips the diskette and holds it in a proper data transferring plane. The mechanical connections from the knob to the pressure plate and to the movable transducer or pressure pad include an oscillatable shaft connected with the knob and having an offset or eccentric portion effective for moving these parts from original to intermediate positions. The solenoid is positioned on a second side of the machine opposite a first side carrying the oscillatable shaft, and a flexible cable connects the solenoid with mechanism on the first side of the machine for moving the pressure plate and for moving the movable transducer or pressure pad from intermediate to final positions.
REFERENCES:
patent: 3678481 (1972-07-01), Dalziel et al.
patent: 3946439 (1976-03-01), Castrodale et al.
patent: 4085428 (1978-07-01), Green et al.
Bailey et al., IBM Tech. Disc. Bull., vol. 18, No. 7, Dec. 1975, p. 2246.
Beuch Wallace E.
O'Konski George J.
Rusch Kenneth D.
Wytaski Thomas A.
Bleuer Keith T.
International Business Machines - Corporation
Tupper Robert S.
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