GB342893A - Instrument for drawing curves especially conic sections - Google Patents

Instrument for drawing curves especially conic sections

Info

Publication number
GB342893A
GB342893A GB341730A GB341730A GB342893A GB 342893 A GB342893 A GB 342893A GB 341730 A GB341730 A GB 341730A GB 341730 A GB341730 A GB 341730A GB 342893 A GB342893 A GB 342893A
Authority
GB
United Kingdom
Prior art keywords
slide
rules
conic sections
instrument
pinions
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
GB341730A
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 GB341730A priority Critical patent/GB342893A/en
Publication of GB342893A publication Critical patent/GB342893A/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
    • B43L11/00—Non-circular-curve-drawing instruments
    • B43L11/02—Non-circular-curve-drawing instruments for drawing conic sections

Landscapes

  • Image Analysis (AREA)

Abstract

342,893. Ellipsographs. NAVASCUES, A. G., Alava, Murguia, Spain. Jan. 31, 1930, No. 3417. [A Specification was laid open to inspection under Sect. 91 of the Acts, Feb. 1, 1930.] [Class 97 (iii).] A device for drawing conic sections and similar curves, comprises two graduated rules provided with toothed racks, and a slide carrying pinions which unites the two rules. In the form shown, the rules 2, 11 are united by a slide 4 bearing pinions 7, 6 having axial openings to receive a pencil, chalk or the like. A third slide 3 at rightangles to the rule 11 is provided for use as a directrix when drawing parabolas. The slide 4 is provided with a gauge for indicating the travel of the tracing point.
GB341730A 1930-01-31 1930-01-31 Instrument for drawing curves especially conic sections Expired GB342893A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB341730A GB342893A (en) 1930-01-31 1930-01-31 Instrument for drawing curves especially conic sections

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB341730A GB342893A (en) 1930-01-31 1930-01-31 Instrument for drawing curves especially conic sections

Publications (1)

Publication Number Publication Date
GB342893A true GB342893A (en) 1931-02-12

Family

ID=9757939

Family Applications (1)

Application Number Title Priority Date Filing Date
GB341730A Expired GB342893A (en) 1930-01-31 1930-01-31 Instrument for drawing curves especially conic sections

Country Status (1)

Country Link
GB (1) GB342893A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2493786A (en) * 1945-03-26 1950-01-10 Swift Gilbert Mechanical position finder
US2513641A (en) * 1945-12-19 1950-07-04 Vernon H Gray Curve scribing instrument
US2928178A (en) * 1953-05-29 1960-03-15 Seismograph Service Corp Mechanical plotting and measuring apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2493786A (en) * 1945-03-26 1950-01-10 Swift Gilbert Mechanical position finder
US2513641A (en) * 1945-12-19 1950-07-04 Vernon H Gray Curve scribing instrument
US2928178A (en) * 1953-05-29 1960-03-15 Seismograph Service Corp Mechanical plotting and measuring apparatus

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