Abstract: The safety device for tape cassettes for the positionally correct insertion of the tape cassettes into an acceptance device comprises a tongue-shaped spring element disposed at the floor of the acceptance device, a ramp edge being disposed at the free end of said spring element, with said ramp edge cooperating with the front edge of said tape cassette and being displaceable by said front edge out of the insertion region upon insertion of said tape cassette. A stop piece engaging behind the ramp edge in the direction toward the fastening end of the spring element is connected to the ramp edge, the stop piece interacting with a recess of the tape cassette such that, given positionally correct insertion of the tape cassette into the acceptance device, the stop piece first slides into the recess and, upon continued insertion of the cassette, the front edge thereof displaces the stop piece out of the insertion region via the ramp edge.

Abstract: The magnetic tape recorder exhibits an insertion channel into which a cassette containing a magnetic tape is inserted in a longitudinal direction. A capstan driven by a tape drive motor and a magnetic head are disposed at one side of the insertion channel. A dust cover for the cassette is hinged out by a pivot arrangement during closing of a cover for the insertion channel. The magnetic head is disposed on a magnetic head carrier that is pivotable around an axis and is coupled with the cover for the insertion channel such that the magnetic head is pivotable into place behind the dust cover in contacting relation to the magnetic tape after said dust cover has been opened. The cassette is locked in a defined working position after the cover for the insertion channel is closed. For removal of the cassette, the magnetic head is pivoted out of its operating position into an idle position as the cover for the insertion channel is opened, whereupon the dust cover is hinged back into its closed position.

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.

Abstract: A device for positioning a magnetic head in a magnetic tape device includes a head carrier on which the head is mounted, a spiral gearing connected to the head carrier, and an operating device for rotation of the spiral gearing. The head carrier is disposed in a support system comprised of a first bearing rigidly disposed in the housing frame, a bearing plate adjustably attached to the frame and which can be positioned relative to a reference surface, and a second bearing disposed at the bearing plate.

Abstract: A locking device for a magnetic tape cassette in a magnetic tape device has a lever disposed below the insertion slot; a blocking arm projecting out of the housing; a thrust arm; and an ejector arm. When a magnetic tape cassette is locked in with the locking arm, the thrust arm engages via a wedge with a cartridge-like carrier provided with three rotary bodies and by upward movement of the carrier towards the insertion slot presses the rotary bodies into the insertion slot from below and against the magnetic tape cassette. The magnetic tape cassette is thereby securely held at the reference points. When releasing the locking arm, the magnetic tape cassette is ejected by the pre-stressed ejector arm.

Abstract: A system is employed for pivotably seating capstan motors in cassette magnetic tape devices. Two bearing throats whose ends are hemispherically designed are disposed at two inside corner edges of a principal frame of the tape device and are clamped there by means of two sink screws positioned next to the bearing necks. The motor is positioned in a bearing fork and the bearing necks proceed through openings in the free ends of the bearing fork and press against the motor, so that a play-free suspension of the motor is achieved.

Abstract: A system for setting up a data display device on a work surface, functions for elevation adjusting, for rotating, and for swivelling the data display device. The system, which is particularly economical, has a stand with a telescope member adjustable in height thereon. A base plate is attached thereupon, and a rotary plate is supported on the base plate. The rotary plate has an arch 5 upon which sliding elements are guided, and to which the data display device is fastened.