GB707740A - Improvements in or relating to circular slide rules for making calculations relatingto speed, time, and distance - Google Patents

Improvements in or relating to circular slide rules for making calculations relatingto speed, time, and distance

Info

Publication number
GB707740A
GB707740A GB3133650A GB3133650A GB707740A GB 707740 A GB707740 A GB 707740A GB 3133650 A GB3133650 A GB 3133650A GB 3133650 A GB3133650 A GB 3133650A GB 707740 A GB707740 A GB 707740A
Authority
GB
United Kingdom
Prior art keywords
distance
speed
time
scales
scale
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
GB3133650A
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.)
HAROLD ALEXANDRE BABINGTON BLA
Original Assignee
HAROLD ALEXANDRE BABINGTON BLA
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 HAROLD ALEXANDRE BABINGTON BLA filed Critical HAROLD ALEXANDRE BABINGTON BLA
Priority to GB3133650A priority Critical patent/GB707740A/en
Publication of GB707740A publication Critical patent/GB707740A/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
    • G06G1/10—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by the graduation
    • G06G1/12—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by the graduation logarithmic graduations, e.g. for multiplication

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Length-Measuring Instruments Using Mechanical Means (AREA)

Abstract

707,740. Calculating-apparatus. BLACKWELL, H. A. B. Dec. 5, 1951 [Dec. 27, 1950], No. 31336/50. Class 106 (1) A calculator comprises a member bearing concentric circular logarithmic scales of speed and time and a relatively rotatable member having a logarithmic scale of distance co-operating with the time scale and carrying a pointer which cooperates with the speed scale. Relatively rotatable discs 10, 11 carry co-operating scales C, D of minutes and miles respectively. A pointer 13, located on the disc 11 by the central pivot and a rivet 14, indicates speed in miles per hour on a further scale C1 on the disc 10. For this purpose, when the scales C and D are aligned, the pointer indicates "60." In a modification for use in motor racing, the time scale is graduated in minutes and seconds and a similar calculator is arranged on the back of the disc 10, the scales C, D and C1 being calibrated respectively for qualifying distance, actual distance and index of performance, the latter being the ratio of actual to qualifying distance.
GB3133650A 1950-12-27 1950-12-27 Improvements in or relating to circular slide rules for making calculations relatingto speed, time, and distance Expired GB707740A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3133650A GB707740A (en) 1950-12-27 1950-12-27 Improvements in or relating to circular slide rules for making calculations relatingto speed, time, and distance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3133650A GB707740A (en) 1950-12-27 1950-12-27 Improvements in or relating to circular slide rules for making calculations relatingto speed, time, and distance

Publications (1)

Publication Number Publication Date
GB707740A true GB707740A (en) 1954-04-21

Family

ID=10321617

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3133650A Expired GB707740A (en) 1950-12-27 1950-12-27 Improvements in or relating to circular slide rules for making calculations relatingto speed, time, and distance

Country Status (1)

Country Link
GB (1) GB707740A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3279695A (en) * 1964-07-06 1966-10-18 Clarence W White Position computer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3279695A (en) * 1964-07-06 1966-10-18 Clarence W White Position computer

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