Control devices for pick-up arms of record players

Details Control devices for pick-up arms of record players Control devices for pick-up arms of record players

1976-10-20

1977-09-20

Phillips, Charles E.

Undertaking

G11B 1706

Patent

active

040492796

ABSTRACT:
A control device for a pick-up arm of a record player comprises a power take-off element disposed on a vertical spindle of the arm, a planetary gear arrangement comprising a sun wheel and at least one planet wheel in engagement with the sun wheel, and a rotatable support means connected to the sun wheel by a clutch and mounting the planet wheel or wheels. On rotation of the sun wheel the rotatable support means with the planet wheels mounted thereon also rotates until either a planet wheel or a drive wheel fixed to the planet wheel comes into contact with the power take-off element, whereupon the clutch slips and the planet or drive wheel will rotate and, through frictional contact with the power take-off element, will rotate the spindle and thus swivel the pick-up arm. The control device also includes lifting means responsive to rotation of the rotatable support means to raise the pick-up arm before the planet wheel or drive wheel is brought into contact with the power take-off element.

REFERENCES:
patent: 3305238 (1967-02-01), Carlson
patent: 3307851 (1967-03-01), Tourtellot
patent: 3311379 (1967-03-01), Zarm

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