Record centering and decoupling devices for turntables

Details Record centering and decoupling devices for turntables Record centering and decoupling devices for turntables

1982-09-08

1984-07-03

Phillips, Charles E.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specific detail of storage medium support or motion production

G11B 362

Patent

active

044583478

ABSTRACT:
Methods and devices are provided for accurately centering a record upon the platter of a turntable before play thereof and for isolating the record from the spindle of the turntable while the record is being played, in order to decouple the tonearm from mechanical and acoustical vibrations travelling up the spindle and to the circular side of the record aperture and then to the needle of the tonearm. These devices are used with a stub-like spindle having a top below the upper surface of the platter and include a removable centering pin, a shrink-swell centering and detaching device, and a double-diameter centering and detaching device.

REFERENCES:
patent: 1471092 (1923-10-01), Blaha
patent: 3395919 (1968-08-01), Freier

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