GB567915A - Improvements in slide rules and other calculators - Google Patents

Improvements in slide rules and other calculators

Info

Publication number
GB567915A
GB567915A GB871343A GB871343A GB567915A GB 567915 A GB567915 A GB 567915A GB 871343 A GB871343 A GB 871343A GB 871343 A GB871343 A GB 871343A GB 567915 A GB567915 A GB 567915A
Authority
GB
United Kingdom
Prior art keywords
scales
disc
marked
transparent
slide
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
GB871343A
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 GB871343A priority Critical patent/GB567915A/en
Publication of GB567915A publication Critical patent/GB567915A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G1/00—Hand manipulated computing devices
    • G06G1/02—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales
    • G06G1/04—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by construction
    • G06G1/08—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by construction with circular or helical scales
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G1/00—Hand manipulated computing devices
    • G06G1/02—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales
    • G06G1/04—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by construction

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Displays For Variable Information Using Movable Means (AREA)

Abstract

567,915. Circular slide-rules. MAcLEAN, J. D. June 1, 1943, Nos. 8713 and 11112. [Class 106 (i)] A calculator or sliderule of circular form comprises superposed coaxial relatively rotatable discs of which the upper is transparent and is marked on the lower side with two of the usual scales, e.g. the B and C scales, while the lower disc is opaque and is marked with the other scales (the A and D scales) in positions to cooperate with the scales on the transparent disc. An intermediate transparent disc or arm carrying a cunsor line may be provided. The slide rule may be duplicated by providing a third disc with B and C scales co-operating with A and D scales on the back of the lower disc, the scales being marked for calculations in sines and cosines. The slide rule may be mounted in a watch type of case, with one of the discs and the cursor rotatable by winding stems.
GB871343A 1943-06-01 1943-06-01 Improvements in slide rules and other calculators Expired GB567915A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB871343A GB567915A (en) 1943-06-01 1943-06-01 Improvements in slide rules and other calculators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB871343A GB567915A (en) 1943-06-01 1943-06-01 Improvements in slide rules and other calculators

Publications (1)

Publication Number Publication Date
GB567915A true GB567915A (en) 1945-03-08

Family

ID=9857808

Family Applications (1)

Application Number Title Priority Date Filing Date
GB871343A Expired GB567915A (en) 1943-06-01 1943-06-01 Improvements in slide rules and other calculators

Country Status (1)

Country Link
GB (1) GB567915A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2591058A (en) * 1951-03-19 1952-04-01 Howard E Freeman Screen and lens calculator
US3280464A (en) * 1964-11-05 1966-10-25 Louis A Warner Universal navigational plotter
FR2065618A1 (en) * 1969-10-31 1971-07-30 Int Nickel Ltd
EP1943526A2 (en) * 2005-10-31 2008-07-16 Answering, LLC Device for resolving interpersonal relationship issues

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2591058A (en) * 1951-03-19 1952-04-01 Howard E Freeman Screen and lens calculator
US3280464A (en) * 1964-11-05 1966-10-25 Louis A Warner Universal navigational plotter
FR2065618A1 (en) * 1969-10-31 1971-07-30 Int Nickel Ltd
EP1943526A2 (en) * 2005-10-31 2008-07-16 Answering, LLC Device for resolving interpersonal relationship issues
EP1943526A4 (en) * 2005-10-31 2010-12-08 Answering Llc Device for resolving interpersonal relationship issues

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