Phonograph record player with improved tone arm control

Details Phonograph record player with improved tone arm control Phonograph record player with improved tone arm control

G - Physics

11

B

181/51

G11B 21/12 (2006.01) G11B 3/095 (2006.01) G11B 25/04 (2006.01)

Patent

CA 1053584

PHONOGRAPH RECORD PLAYER ABSTRACT OF THE DISCLOSURE In a phonograph record player, an improved control mechanism is provided for effecting lead-in movement of a tone arm from an elevated rest position outside the perimeter of a turntable to a selected set-down position on a record supported by the turntable so as to commence a play operation, and for effecting a return movement of the tone arm to its rest position upon the termination of the play operation. In such control mechanism, a main lever is made to swing by a cam follower engaging in a cam groove of a control gear to effect the lead-in and return movements upon rotation of the control gear by a drive gear rotated with the turntable. In order to prevent damage to the control mechanism in the event that there is manual interference with swinging of the tone arm during the lead-in or return movements, a tone arm drive mechanism for swinging the tone arm in response to swinging of the main lever is provided with transmission members which are releasable in response to predetermined resistance to swinging of the tone arm.

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