Device for positioning a magnetic head to various tracks of a ma

Details Device for positioning a magnetic head to various tracks of a ma Device for positioning a magnetic head to various tracks of a ma

1983-11-25

1986-09-02

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360105, 360109, G11B 2108, G11B 2122, G11B 555

Patent

active

046099590

ABSTRACT:
A device for positioning a magnetic head into an operative position relative to a multi-track magnetic tape in a magnetic tape recorder. A magnetic head is disposed at one end of a magnetic head carrier while the opposite end of the head carrier is axially and laterally moveably mounted on a shaft attached to the tape recorder housing frame. A motor-driven worm gear engages a worm wheel mounted in an axially displaceable manner along the shaft. A spring mounted on the shaft urges the head carrier against the worm wheel so that upon rotation of the worm, the worm wheel is displaced along the shaft and moves the magnetic head perpendicularly to the running direction of the magnetic tape. A stop member is positioned adjacent the head carrier to prevent rotation of the head carrier during rotation of the worm wheel. In certain embodiments, the head carrier is pivotally mounted on the shaft in order to selectively pivot the magnetic head away from the operational working area thereof. The magnetic head carrier is seated in a bearing plate formed of a resilient material and on the shaft. After releasing the fastening of the bearing plate at one end thereof, the magnetic head and magnetic head carrier can be readily replaced by another magnetic head and carrier and precisely positioned by reattaching the bearing plate over the shaft.

REFERENCES:
patent: 4491890 (1985-01-01), Rudi
patent: 4559571 (1985-12-01), Olmsted et al.

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