Dynamic magnetic information storage or retrieval – Record transport with head moving during transducing – Tape record
Patent
1974-11-12
1976-07-13
Eddleman, Alfred H.
Dynamic magnetic information storage or retrieval
Record transport with head moving during transducing
Tape record
242 7543, 242189, 360 72, 360132, G11B 1566, G11B 1543, G11B 552, G11B 2304
Patent
active
039697665
ABSTRACT:
A tension control device, particularly for an apparatus recording and/or reproducing video signals on a tape which is wound on and extends between supply and take-up reels, includes a pivoted tension control arm urged by a tensioning spring against a run of the tape between the reels for detecting the tape tension and correspondingly controlling a brake resisting rotation of the supply reel so as to maintain the tape tension at a level determined by the spring force, and the spring force is made adjustable for varying the tape tension which is to be maintained by connecting the tensioning spring to a movable anchor member which is substantially counter-balanced, for example, by another spring acting on the anchor member in opposition to the tensioning spring. Movements of the anchor member for adjusting the force of the tensioning spring are effected by a manually actuable control element preferably having an irreversible coupling to the anchor member which provides a substantial mechanical advantage, for example, in the form of a cam member turnable with the control element and engaged by a cam follower on the movable anchor member.
REFERENCES:
patent: 3374962 (1968-03-01), Dunsheath
patent: 3380680 (1968-04-01), Dunsheath et al.
patent: 3580525 (1971-05-01), Dopner
patent: 3621149 (1971-11-01), Wada et al.
patent: 3673348 (1972-06-01), Larkin
patent: 3697016 (1972-10-01), Leifer et al.
patent: 3764757 (1973-10-01), Inaga
patent: 3769470 (1973-10-01), Curtis
Saito Akira
Tanaka Katsuo
Eddleman Alfred H.
Eslinger Lewis H.
Sinderbrand Alvin
Sony Corporation
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