G - Physics – 11 – B
Patent
G - Physics
11
B
181/49, 181/63
G11B 21/00 (2006.01) G11B 3/085 (2006.01)
Patent
CA 1225337
29 ABSTRACT: In a record player the control device for the pick-up arm (4) comprises a command disc (12; 60) which is rotatable by a motor and to which is connected a recipro- cable drive element (16; 62). A guide element (48; 78) is pivotally connected to the drive element, and is engage- able with a coupling element (53; 63b) on a pick-up arm base (43; 63) to move the pick-up arm (4) towards the turn- table (2). The control device further comprises a pivotal selection member (29; 66) having first (31; 71) and second (32; 72) positioning surfaces which are selectively co- operable with an abutment (57; 64) on the base (43; 63) of the pick-up arm (4) in order to position the pick-up arm (4) selectively in a first or second position respectively above the turntable (2). The guide element (43; 78) is pivotable between two stable positions, namely an inoper- ative first position which it occupies during the forward movement of the drive element (16; 62) and an operative second position which it occupies during a L least a part of the return movement of the drive element, in which second position the guide element is engageable with the coupling element (53; 63b) to guide the pick-up arm (4). At the end of the forward movement of the drive element (16; 62) the guide element (48; 78) abuts a stop (56; 81) to be pivoted thereby to the second position. During the return movement of the drive element (16; 62), after abutment of the abutment (57; 64) on the pick-up arm base with one or the other of the positioning surfaces (31, 32; 71, 72) the guide element (48, 78) is pivoted out of the second position and is thus disengaged from the coupling element (53, 63b), after which the selection member (29; 66) is pivoted out of the path of the abutment (57; 64) on the pick-up arm base (43; 63) by the command disc (12; 60).
470052
N.v.philips'gloeilampenfabrieken
Van Steinburg C.e.
LandOfFree
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