Abstract: An arrangement for mounting magnetic tape heads in magnetic tape players, recorders, and other similar machines, comprises a mounting plate shaped for fixedly connecting a tape head therewith. A housing portion of the machine includes a base on which the mounting plate is pivotally supported for side-to-side, i.e., pivotal, movement, and housing sidewalls between which the side edges of the mounting plate are received. An adjustment mechanism is provided to selectively pivot the mounting plate into an aligned position, wherein the magnetic recording "gaps" of the tape head are in a substantially perpendicular relationship with the direction of motion of a magnetic tape sliding thereover. Channels are disposed along the mounting plate side edges and the adjacent housing sidewalls, and a solidifying plastic material is injected therein to form keys which positively retain the tape head in the aligned position.

Abstract: A cassette or cartridge-loading tape transport is disclosed, for use in magnetic recorders and the like, especially data recorders. The device includes tracks for slidably receiving a cassette or cartridge. A plate is slidably supported below the tracks and a drive motor is mounted on the plate. A constant-force spring biases the plate to a forward position. A plurality of lever arms supporting rollers are pivotally mounted adjacent the plate. Each lever arm includes a cam surface cooperating with a cam surface on the plate so that the rollers on the arms are moved from a lowered, inoperative position to a raised position engaging, locating and locking the cassette or cartridge within the recorder. A constant-force spring biases the lever arms to a raised position.

Abstract: An amplifier for video signals transmitted by way of coaxial cable includes synchronizing signal separating means for gating synchronizing signals to a level detecting circuit, in order to produce a control voltage. The control voltage controls the gain of an input stage of the amplifier to maintain the level of the synchronizing signals transmitted by the cable, while compensating for different attenuation which may be effected at video frequencies signal frequencies by cables of different length.