Abstract: According to the invention, there is provided an input responsive damper comprising a worm wheel for being rotationally driven by an object of damping, a worm for being rotated by the worm wheel, a guide for movably guiding along the axis of the worm a worm support member rotationally supporting the worm, a biasing device for biasing the worm support member in the direction opposite to the direction of the biasing force of the worm wheel applied to the worm and a damping device having a combination of a magnet and a conductor arranged concentrically around the rotary axis of the worm, the magnet and the conductor rotating relative to each other, either of the magnet and the conductor being supported by the worm and the other being supported by a stationary member. This induction type damper provides greater than normal damping when greater than normal force is applied by the object of damping. Frictional type and fan type damping enhancement element are also disclosed.

Abstract: A magnetic recording/reproducing apparatus of small size, small weight, and suitable for incorporation into a child's toy or the like. A magnetic disc is supported on a shaft, the latter being driven rotationally by a wind-up spring. A governor is provided for controlling the releasing force of the spring to thereby cause the disc to be rotated at a constant speed. A magnetic head is moved linearly and radially along the disc in synchronism with the rotation of the disc supporting shaft and in sliding contact with the disc. A spring-biased mode changeover member is provided for selecting between the recording and reproducing modes, the mode changeover member being normally urged to the reproducing mode position.