Registers – Calculators – Tabular
Patent
1978-03-21
1980-01-29
Tomsky, Stephen J.
Registers
Calculators
Tabular
235 70A, 235 85R, G06C 300
Patent
active
041862970
ABSTRACT:
A calculator for sunlight effect having a base portion which holds two orthogonal plate slides of which one is transparent and provided with a double curve system enabling plotting of any day/hour combination, the curve system, being characteristic for a specific latitude, and this slide being positionable according to a relevant facade direction. On the base portion underneath the slide is printed a curve system indicative of the heating effect of the sun for any point in the double curve system. The other slide has a pointer curve which, when brought to register with any point of the double curve system, causes the other slide to assume a position indicative of the inclination of the shadow by the particular combination of parameters, and the other slide forms together with the base portion and further slides a slide rule calculator enabling a direct determination of the vertical shadow on a window as caused by an overhanging sunshade structure.
REFERENCES:
patent: 2494536 (1950-01-01), Atwood
patent: 2512387 (1950-06-01), Sands
patent: 3026031 (1962-03-01), Jones
patent: 3266721 (1966-08-01), Barron
patent: 3341117 (1967-09-01), Painter
patent: 3577854 (1971-05-01), Felix
Lund-Hansen Kjeld B.
Owner-Petersen Paul
Lund-Hansen Kjeld Balslev
Tomsky Stephen J.
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