World globe rotation control device

Details World globe rotation control device World globe rotation control device

1988-10-06

1990-07-03

Coven, Edward M.

Education and demonstration

Geography

Terrestrial globe or accessory therefor

368 23, 434136, 434142, G09B 2708

Patent

active

049386956

ABSTRACT:
A device for controlling the direction of rotation of a world globe. The device has a ratchet ring which is affixed to the globe near the North or South Pole thereof. A deflectable pawl member is held by the support frame of the globe and permits the globe to rotate only so that its surface moves eastwardly.

REFERENCES:
patent: 1042456 (1912-10-01), Manson
patent: 1096102 (1914-05-01), Gardner
patent: 1949403 (1934-03-01), Ashlock
patent: 2099518 (1937-11-01), Hazlett
patent: 2339385 (1944-01-01), Dupler
patent: 3241252 (1966-03-01), Baalson
patent: 3516243 (1969-07-01), Hazard
patent: 3827233 (1974-08-01), Villar Eschevarria et al.
patent: 3997980 (1976-12-01), Rogers
"Mechanisms, Linkages and Mechanical Controls".COPYRGT., 1965, Nicholas Chironis, Ed., pp. 148-149.

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