GB617596A - Calculating apparatus - Google Patents

Calculating apparatus

Info

Publication number
GB617596A
GB617596A GB793945A GB793945A GB617596A GB 617596 A GB617596 A GB 617596A GB 793945 A GB793945 A GB 793945A GB 793945 A GB793945 A GB 793945A GB 617596 A GB617596 A GB 617596A
Authority
GB
United Kingdom
Prior art keywords
ribbons
drums
rollers
lenses
ribbon
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB793945A
Inventor
Andre Philippe Clouez
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to GB793945A priority Critical patent/GB617596A/en
Publication of GB617596A publication Critical patent/GB617596A/en
Expired legal-status Critical Current

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  • Impression-Transfer Materials And Handling Thereof (AREA)

Abstract

617,596. Calculating-apparatus. CLOUEZ, A. P. March 29, 1945, No. 7939. Convention date, July 22, 1943. [Class 106 (i)] A calculating device comprises a pair of ribbons graduated on both sides with logarithmic and other scales, one ribbon being moved between drums 1, 4 by turning an upper knob 73 and the other ribbon moved between drums 2, 3 by a lower knob 73, a clutch 85 being provided whereby the two ribbons can be operated together when desired, the ribbons passing between lenses 7, 8, Fig. 6, provided with reading lines 17, arranged opposite to each other, one side of the ribbons thus being read from one face of the device and the other side from the opposite face. The knobs 73 are geared to sprockets 68<1>, 68<1>, and also to pinions 60 on the drum shafts. The drums are connected to the shafts by coiled springs 66 to maintain tension on the ribbons and to allow for the variations in the effective diameter of the drums. The ribbons are guided by rollers 9, 12, and pass diagonally across the space between the lenses 7, 8, two other rollers (not shown in Fig. 6) being placed adjacent to but on the opposite sides of the ribbons from the rollers 9, 12 respectively.
GB793945A 1945-03-29 1945-03-29 Calculating apparatus Expired GB617596A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB793945A GB617596A (en) 1945-03-29 1945-03-29 Calculating apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB793945A GB617596A (en) 1945-03-29 1945-03-29 Calculating apparatus

Publications (1)

Publication Number Publication Date
GB617596A true GB617596A (en) 1949-02-09

Family

ID=84693263

Family Applications (1)

Application Number Title Priority Date Filing Date
GB793945A Expired GB617596A (en) 1945-03-29 1945-03-29 Calculating apparatus

Country Status (1)

Country Link
GB (1) GB617596A (en)

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