Patent:GB166173
| Brevet: | GB 166173 |
| Titre: | Improvements in trigonometrical calculating machines |
| Date: | 11.07.1921 |
| Lieu: | |
| Pays: | Royaume-Uni |
| Personne: | Percy Willis Gray |
| Entreprise: | |
| Liens internes: | Analogrechner |
| Mots-Clefs: | Trigonometrie, Ballistik |
Lien à la bureau des brevets:
(sans garantie) |  GB166173 |
Aus der Patentschrift GB166173
"Logarithmic calculators.-Relates to apparatus for solving the range problem involved in obtaining the range from a gun station G, Fig. 6, to an invisible target (indirect-fire) B by means of angular measurements from two observation stations A, C at a known distance apart, by means of a repeated application of the law of sines in a plane triangle, the invention consisting primarily in deriving from the movements of manually-set members movements proportional to their logarithms, and in then adding and subtracting these values. ..."
- DATUM: 11.07.1921
- TITEL: Improvements in trigonometrical calculating machines
- PERSON: ALFRED TAYLOR
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