Patent:GB600485
Patent: | GB 600485 |
Titel: | Improvements in or Relating to Calculating Machines |
Datum: | 22.06.1945 |
Ort: | |
Land: | Großbritannien |
Person: | Stevens, A. H. |
Firma: | Felt und Tarrant (P) |
Links im Rechnerlexikon: | Comptometer |
Schlagworte: | |
Link zum Patentamt: (ohne Garantie) | GB600485 |
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Aus der Patentschrift GB600485
"To obviate unwanted transfers during subtraction by complementary addition, transfer-inhibiting mechanism is conditioned for operation by a subtract or other control key and is subsequently operated in response to the depression of a digit key in the highest denomination of the subtrahend to inhibit the transfer between that denomination and the one above it. The invention is shown as applied to a key-responsive independently-operated machine of the kind disclosed in Specification
601,375. " (
GB600485)