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 1052705

PHONOGRAPH RECORD PLAYER ABSTRACT OF THE DISCLOSURE In a phonograph record player, an improved control mechanism is provided for effecting lead-in movement of the tone arm from an elevated rest position outside the perimeter of the turntable to an adjustably and accurately selected set-down position of the stylus 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 termination of the play operation. In such control mechanism, a pivoted main lever is made to swing in first and second directions by a cam follower thereon engaging in a cam groove of a control gear when the latter is turned for effecting the lead-in and return movements, a pivoted lead-in lever is urged by means of a releasable coupling to follow the swinging of the main lever in such first direction and causes corresponding swinging of the tone arm in the direction of the lead-in movement of the latter, and an adjustable abutment on the lead-in lever is engageable with a selected edge portion of a record size selecting member which is turnable about a fixed axis and which has a plurality of edge portions at different radial distances from that fixed axis, so that engagement of the abutment with selected one of the edge portions limits the swinging of the lead-in lever with the main lever for accurately determining the set-down position.

265194

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