Sound reproducing apparatus for non-rotating plate-shaped or sheet-like sound carriers

Claim 1

An electrically driven sound reproducing apparatus for non-rotating sound carriers having a spiral-shaped sound groove, including aligning means permitting the sound reproducing apparatus to be put into place in correct positional relationship with respect to a sound carrier, said apparatus having a housing including a rotatable, vertical-axis tone arm table operable by a battery driven driving motor, a pickup system journaled on said table to pivot in horizontal and vertical directions, a lowering device for lowering said pickup system onto the sound carrier from a retracted position into an operational position, switch means for switching on the apparatus, an abutment cam having an arcuate engaging surface and a tip at one end thereof for movement into a position such that said pickup system moves into engagement with said abutment cam adjacent said engaging surface and which can be moved into one of several radial positions with respect to the tone arm table axis, and a control member adjustable from outside the housing of the sound reproducing apparatus for moving the adjustment cam into one of the said positions, whereby said pickup system first moves into contact with said engaging surface of said abutment cam and is urged inwardly therealong towards the tip over which it will slidingly pass when reaching a desired radial portion of said sound groove.