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Patent:GB191007540

Patent:	GB 191007540
Titel:	Improvements in Calculating Machines
Datum:	26.03.1910
Ort:	Riga, Russland
Land:	Großbritannien
Person:	Vogel, Victor (P)
Firma:
Links im Rechnerlexikon:	Spira
Schlagworte:	Addiermaschine, Spirale, Schnecke
Link zum Patentamt: (ohne Garantie)	GB191007540

Abstract of GB191007540 7540. Vogel, V. March 26. Adding and subtracting apparatus. - A machine operated by worm gearing has a series of skeleton worms, each mounted in a casing of which the sides act as guides for the operating- pin. A plan of the apparatus is shown in Fig. 2. On the casing cover a slide e is mounted to expose the numerals on one side of the worm-casing when performing addition and, by a lateral movement of the slide, a second series on the other side of the worm-casing is exposed when performing subtraction.
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