Device for continuous adjustment of the stylus pressure
AssigneeU.S. Philips Corporation
InventorJoachim Tetzner
Life of this patent
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Abstract
A device for the continuous adjustment of the stylus pressure in a record player. Vertical stylus pressure can be corrected by means of a load spring whose tensile force can be adjusted by moving the suspension end at the mounting side. The movable end of the load spring is attached to a carrier, which engages a spiral groove or ridge provided in the inner wall of an adjusting ring which is rotatable on the bearing block of the pick-up arm.
Claims3
A device for continuous adjustment of the vertical stylus force in a record player which comprises a bearing block mounted for rotation about a vertical axis, a pick-up arm pivotally journalled in the bearing block about a horizontal axis, and a load spring having two ends and connected at one end to said pick-up arm for adjusting the vertical stylus force, wherein said device comprises an adjusting ring mounted on said bearing block for rotation about a vertical ring axis, said ring having an inner wall;
- a carrier slidably mounted in said bearing block for movement parallel to said vertical axis, said carrier being connected to the other end of the tension spring;
- and spiral means for interconnecting said carrier and said ring such that rotation of said ring moves said carrier axially thereby changing force exerted by said load spring, said ring being movable in rotation only about said ring axis while in a mounted condition.
Dependencies are inferred from the claim text.