GB514289A - Improvements relating to calculating machines - Google Patents

Improvements relating to calculating machines

Info

Publication number
GB514289A
GB514289A GB1597738A GB1597738A GB514289A GB 514289 A GB514289 A GB 514289A GB 1597738 A GB1597738 A GB 1597738A GB 1597738 A GB1597738 A GB 1597738A GB 514289 A GB514289 A GB 514289A
Authority
GB
United Kingdom
Prior art keywords
key
improvements relating
pinion
engagement
calculating
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
GB1597738A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 by Individual filed Critical Individual
Priority to GB1597738A priority Critical patent/GB514289A/en
Publication of GB514289A publication Critical patent/GB514289A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06C—DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
    • G06C7/00—Input mechanisms
    • G06C7/02—Keyboards
    • G06C7/06—Keyboards with one set of keys for each denomination

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Transmission Devices (AREA)

Abstract

514,289. Calculating-apparatus. WEBB, C. F. May 28, 1938, No. 15977. Drawings to Specification. [Class 106 (i)] A calculating machine of the. key-controlled multiple-bank type comprises a rack which in the position of rest is out of engagement with its pinion, and on depression of a key is moved while remaining out of engagement to a position dependent on the particular key actuated and immediately after reaching this position engages the pinion and rotates it during the return stroke. The description agrees with that of Specification 514,291 but the claims differ, Specification 514,290 also is referred to.
GB1597738A 1938-05-28 1938-05-28 Improvements relating to calculating machines Expired GB514289A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1597738A GB514289A (en) 1938-05-28 1938-05-28 Improvements relating to calculating machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1597738A GB514289A (en) 1938-05-28 1938-05-28 Improvements relating to calculating machines

Publications (1)

Publication Number Publication Date
GB514289A true GB514289A (en) 1939-11-03

Family

ID=10068991

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1597738A Expired GB514289A (en) 1938-05-28 1938-05-28 Improvements relating to calculating machines

Country Status (1)

Country Link
GB (1) GB514289A (en)

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