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Die große Enzyklopädie des mechanischen Rechnens

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Patent:GB191007540


Brevet:GB 191007540
Titre:Improvements in Calculating Machines
Date:26.03.1910
Lieu:Riga, Russland
Pays:Royaume-Uni
Personne:Vogel, Victor (P)
Entreprise:
Liens internes:Spira
Mots-Clefs:Addiermaschine, Spirale, Schnecke
Lien à la bureau des brevets:
(sans 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.
Spira-GB191007540.png.