GB133577A - - Google Patents

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Publication number
GB133577A
GB133577A GB133577DA GB133577A GB 133577 A GB133577 A GB 133577A GB 133577D A GB133577D A GB 133577DA GB 133577 A GB133577 A GB 133577A
Authority
GB
United Kingdom
Prior art keywords
scales
logarithmic
graduated
rule
arm
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.)
Active
Application number
Publication of GB133577A publication Critical patent/GB133577A/en
Active legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G1/00—Hand manipulated computing devices

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

Abstract

133,577. Windle, E. Jan. 30, 1919. Plane-trigonometry calculators; slide-rules.- An apparatus for the solution of right-angled triangles and for use as a protractor or drawing instrument of the kind comprising a quadrant having a pivoted arm and a sliding vertical member, is provided with logarithmic as well as ordinary scales so that the sliding member may be replaced by a rule bearing a logarithmic scale to act as a slide rule. The base B, radial arm A, and sliding vertical member C are provided with similar evenly graduated scales a and with logarithmic scales b, that on the arm A co-operating with a double scale e to half the radius. The quadrant D is graduated in degrees and gradients, and a groove G is provided in the base B to carry the member C or a logarithmically graduated rule. The joint F is formed as a flat knuckle joint to allow the device to lie evenly on the paper.
GB133577D Active GB133577A (en)

Publications (1)

Publication Number Publication Date
GB133577A true GB133577A (en)

Family

ID=1726986

Family Applications (1)

Application Number Title Priority Date Filing Date
GB133577D Active GB133577A (en)

Country Status (1)

Country Link
GB (1) GB133577A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3083901A (en) * 1960-01-25 1963-04-02 Edwin Z Gabriel Computers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3083901A (en) * 1960-01-25 1963-04-02 Edwin Z Gabriel Computers

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