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Patent:GB191505158


Patent:GB 191505158
Title:Improvements in Calculating Apparatus
Date:08.05.1916
Place:
Country:Great Britain
Person:Mather, John Cecil (P)
Company:
Internal Links:Analogrechner, Proportionalrechner, Nürnberger Schere
Keywords:
Link to the patent office:
(without guarantee)
 GB191505158


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Aus der Patentschrift GB191505158

"Proportional calculators; logarithmic calculators. - In a proportional calculator, a graduated extensible member is adapted to be superposed on an ordinary scale of fixed length. One form of the extensible member comprises a lazy-tongs, Fig. 3, graduated as shown. In modifications, springs are used, either spiral as shown in Fig. 4, or flat, jointed alternately at the ends and middle...."

Der Erfinder schlägt eine logarithmische Nürnberger Schere vor.