ENDLESS TAPE CARTRIDGE CONTAINING A BRAKE TO PREVENT ROTATION OF THE REEL

摘要

An endless magnetic tape cartridge has a rotatable reel supporting the tape coil and provided with a releasable brake to prevent slackness in the tape during handling and storage. The brake includes serrations inclined to the radii of the reel and a spring-biased locking lever pivoted intermediate a hooked locking end and a slotted end coupled to a T-shaped actuating slide. The actuating slide has an arm slidably mounted and a crossarm adjacent a front opening of the cartridge so that insertion of the cartridge into a player results in the player head engaging the crossarm of the actuating slide to shift it rearwardly to thereby pivot the hooked locking end of the brake from the serrated periphery of the reel to permit rotation of the endless tape.