GB186222A - An improved instrument for drawing ellipses - Google Patents

An improved instrument for drawing ellipses

Info

Publication number
GB186222A
GB186222A GB2115721A GB2115721A GB186222A GB 186222 A GB186222 A GB 186222A GB 2115721 A GB2115721 A GB 2115721A GB 2115721 A GB2115721 A GB 2115721A GB 186222 A GB186222 A GB 186222A
Authority
GB
United Kingdom
Prior art keywords
string
eyes
arm
sleeve
improved instrument
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
GB2115721A
Other languages
English (en)
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
Priority to DENDAT346073D priority Critical patent/DE346073C/de
Priority to CH96887D priority patent/CH96887A/de
Application filed by Individual filed Critical Individual
Priority to GB2115721A priority patent/GB186222A/en
Publication of GB186222A publication Critical patent/GB186222A/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
    • B43L11/04—Non-circular-curve-drawing instruments for drawing conic sections for drawing ellipses
    • B43L11/045—Non-circular-curve-drawing instruments for drawing conic sections for drawing ellipses with cords or like flexible elements

Landscapes

  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
  • Road Signs Or Road Markings (AREA)
GB2115721A 1921-08-09 1921-08-09 An improved instrument for drawing ellipses Expired GB186222A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DENDAT346073D DE346073C (en(2012)) 1921-08-09
CH96887D CH96887A (de) 1921-08-09 1921-07-26 Ellipsenzirkel.
GB2115721A GB186222A (en) 1921-08-09 1921-08-09 An improved instrument for drawing ellipses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2115721A GB186222A (en) 1921-08-09 1921-08-09 An improved instrument for drawing ellipses

Publications (1)

Publication Number Publication Date
GB186222A true GB186222A (en) 1922-09-28

Family

ID=10158125

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2115721A Expired GB186222A (en) 1921-08-09 1921-08-09 An improved instrument for drawing ellipses

Country Status (3)

Country Link
CH (1) CH96887A (en(2012))
DE (1) DE346073C (en(2012))
GB (1) GB186222A (en(2012))

Also Published As

Publication number Publication date
DE346073C (en(2012))
CH96887A (de) 1922-11-16

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