GB1039636A - Proportional calipers - Google Patents

Proportional calipers

Info

Publication number
GB1039636A
GB1039636A GB3266464A GB3266464A GB1039636A GB 1039636 A GB1039636 A GB 1039636A GB 3266464 A GB3266464 A GB 3266464A GB 3266464 A GB3266464 A GB 3266464A GB 1039636 A GB1039636 A GB 1039636A
Authority
GB
United Kingdom
Prior art keywords
legs
point means
pivot
proportional
dividers
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
GB3266464A
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 GB3266464A priority Critical patent/GB1039636A/en
Publication of GB1039636A publication Critical patent/GB1039636A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L9/00—Circular curve-drawing or like instruments
    • B43L9/08—Proportional compasses or dividers

Landscapes

  • Toys (AREA)
  • Length-Measuring Instruments Using Mechanical Means (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)

Abstract

1,039,636. Proportional dividers. M. KIDJEL. Aug. 11, 1964, No. 32664/64. Heading B6P. A pair of proportional dividers comprises two legs 1 pivoted at 2, with first point means 11 and second point means 10 at the ends of each leg, the arrangement being such that the ratio of the distances between the first point means and the second point means is 3: 16 or 1: 5À333. The legs 1 are angularly adjustable about the axis 2 by adjustment means including the two links 6 pivoted at 5 to the legs 1, and the connecting pivot 7. A central stem 8, fixed at the axis 2 is slidably mounted at the pivot 7, and can be clamped at the pivot 7 to fix the adjusted angular position of the legs 1. The dividers may be used to trisect an angle, square a circle, construct a regular pentagon or find the side of a cube having twice the volume of a given cube. They are of use in portrait drawing, Fig. 8, since the ratio of the distances 25, 23 to 23, 24 is 3: 16 for normal human beings.
GB3266464A 1964-08-11 1964-08-11 Proportional calipers Expired GB1039636A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3266464A GB1039636A (en) 1964-08-11 1964-08-11 Proportional calipers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3266464A GB1039636A (en) 1964-08-11 1964-08-11 Proportional calipers

Publications (1)

Publication Number Publication Date
GB1039636A true GB1039636A (en) 1966-08-17

Family

ID=10342154

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3266464A Expired GB1039636A (en) 1964-08-11 1964-08-11 Proportional calipers

Country Status (1)

Country Link
GB (1) GB1039636A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103895421A (en) * 2014-04-22 2014-07-02 浙江水利水电学院 Constant ratio compass
CN103895420A (en) * 2014-04-22 2014-07-02 浙江水利水电学院 Multiple proportion compasses

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103895421A (en) * 2014-04-22 2014-07-02 浙江水利水电学院 Constant ratio compass
CN103895420A (en) * 2014-04-22 2014-07-02 浙江水利水电学院 Multiple proportion compasses
CN103895420B (en) * 2014-04-22 2015-11-18 浙江水利水电学院 Multiple proportions compasses
CN103895421B (en) * 2014-04-22 2016-03-16 浙江水利水电学院 Surely than compasses

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