Phonograph actuated elements

Details Phonograph actuated elements Phonograph actuated elements

1980-06-20

1981-12-08

Peshock, Robert

Card, picture, or sign exhibiting

Changing exhibitor

With sound

46240, G09F 2700, A63H 3326

Patent

active

043040608

ABSTRACT:
A phonograph including a lower casing having a turntable. A cover is removably positionable over this turntable and has a top wall disposed in fixed parallel relationship to the plane of the turntable. The cover is made of a non-magnetizable material. A magnetizing disc is provided and having a plurality of magnets secured in a spaced apart manner on an upper face thereof. A drive post is provided and has a detachably securable end to connect to the disc and space the disc above the turntable. The post also has an engaging opposed end to engage with a center hole in the turntable to impart axial rotation to the post when the turntable rotates, whereby to impart a rotational drive to the disc to cause free displacement of magnetically attractable elements disposed on an outer surface of the cover when positioned thereover. The post is a threaded post and the disc is selectively secured along the post between two threaded elements in threaded engagement with the post on opposed sides of the disc whereby the spacing of the disc with respect to the cover top wall is adjustable to regulate the strength of the magnetic field on the said elements.

REFERENCES:
patent: 1544645 (1925-07-01), Johnson
patent: 2282430 (1942-05-01), Smith
patent: 2881001 (1959-04-01), Chisholm et al.
patent: 2918284 (1959-12-01), Baca
patent: 3976296 (1976-08-01), Smith

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