Education and demonstration – Geography – Terrestrial globe or accessory therefor
Patent
1987-02-19
1988-06-21
Apley, Richard J.
Education and demonstration
Geography
Terrestrial globe or accessory therefor
434287, G09B 2708
Patent
active
047522283
ABSTRACT:
A terrestrial globe for observing the polar areas. The globe is made from a pair of semi-spherical members put together along a vertical plane into a spherical body. The globe is supported on a pivotally supported semi-circular member which opens upwardly. The semi-spherical members are rotatable together with each other around a vertical polar shaft, and independently of each other around horizontal rotary shafts. The polar shaft is formed at both ends with eccentric shank portions so as to allow one of the semi-spherical members at one side to rotate freely around the rotary shaft while preventing the one at the other side from rotating around the rotary shaft. When it is desired to turn the spherical body upside down, that is, to reverse the positions of the South Pole and the North Pole, the semi-spherical member at the shank-free side is rotated by 180.degree. around the rotary shaft. Then the spherical body is turned by 180.degree. around the polar shaft to bring the other semi-spherical member to the shank-free side, which is then turned by 180.degree. around the rotary shaft.
REFERENCES:
patent: 651804 (1900-06-01), Houghton
patent: 2483932 (1949-10-01), Powell
patent: 2957252 (1960-10-01), Pain
patent: 2958959 (1960-11-01), Hubbard
patent: 3055123 (1962-09-01), Wigal
Apley Richard J.
Bahr Robert W.
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