A swing arm supports a sound transducer head and a pinch roller for pivotable movement between three positions as follows; a recording an reproducing position in which both the head and pinch roller engage the tape, and tape speed is regulated by a capstan; a scanning position in which only the head engages the tape to enable monitoring it at speeds independent of the capstan; and an inactive position in which the head and pinch roller are both out of engagement with the tape. The swing arm is s...

The data storage apparatus employs a thin flexible disk having magnetic recording surfaces on both sides and disposed in a carrying envelope. The envelope has an elongate slot in both thicknesses to permit magnetic read/write heads on the two sides of the disk to make contact with the magnetic disk surfaces. A pair of pressure pads are disposed on a first side of the envelope and are laterally spaced from the read/write head on that side for forcing the magnetic disk into contact with the read/w...

A magnetic tape guiding device for use in a magnetic tape instrument having a magnetic tape, a supply reel for supplying the magnetic tape, a drum arrangement including a rotary magnetic head arrangement disposed in a drum having a transverse division for the recording and playback of the magnetic tape, and a take-up reel for receiving the magnetic tape; the magnetic tape having a path extending from the supply reel to the drum where it follows a helical path along the circumference of said drum...

A tape guide assembly for registering the record surface of a longitudinally moving record tape with respect to a transducer moving in a transverse plane crosswise to the direction of movement of the tape includes a female guide unit including a pair of axially spaced tape registration land surfaces formed as a portion of an imaginary cylinder and flanking the transverse plane of movement of the transducers moving crosswise of the tape. An elongate barrel, disposed coaxially with respect to the ...

The data storage mechanism employs a thin, flexible disk having magnetic recording surfaces on both sides and disposed in a carrying envelope. The envelope has an elongate slot in both thicknesses to permit magnetic read/write heads to make contact with magnetic disk surfaces. A pair of pressure pads are disposed on both sides of the envelope, laterally and equally spaced from the read/write head on each side of the envelope; and the pads hold the disk substantially fixed in the direction extend...

In sound recording and reproducing apparatus of the magnetic tape type, two pivotal levers of similar form are provided, each with a wing and two guide flanges, arranged in the assembled condition with their guide flanges on a mounting pin and pivotally biased by a torsion spring so that the wings press the magnetic tape against the magnetic heads. Each pivotal lever has an abutment nose which is pressed by the torsion spring surrounding the mounting pin against an abutment surface on the other ...

Various pneumatic means are shown for lifting tape locally away from a rotating head as the rotating head moves. Only the tape in the vicinity of the head is lifted. The lifting is done with minimal pneumatic force, and done only locally about the head so that recovery time for read/write operations after a lifting operation is short, Air to lift the tape can be blown from passages around the head, from passages through the head, or from passages in front of the head. Local lifting about the hea...

A tape cassette for a helical scan type recording and reproducing apparatus comprising upper and lower cylindrical members capable of engaging with each other and adapted to accept a magnetic head therein, and movable poles connected with the upper cylindrical members and capable of stretching a tape outward to prevent contact with various parts of the recording and reproducing apparatus in loading and retrieving the tape cassette. The upper cylindrical member has a helical projection to engage ...

A flexible magnetic recording disc is brought into transducing relation with a recording head by moving a pressure pad against the disc from the side thereof opposite the recording head, and at a point upstream from the latter, in the direction of disc rotation. This resiliently flexes the disc and deviates part of it from its plane of revolution, causing it to partially wrap over the face of the head, in close transducing proximity, without the requirement of a pressure pad on the disc directly...

Tensioning device for use with electromagnetic read/write transducing apparatus wherein a flat elongated band or strip of non-magnetic material is arranged adjacent to a plurality of read/record heads effective to support an item adapted to move between the heads and the tensioning strip and wherein the strip is lever actuated from a relaxed, released condition relative to the heads enabling easy removal and replacement due to wear or breakage into a taut condition and including means to prevent...