GB186222A - An improved instrument for drawing ellipses - Google Patents
An improved instrument for drawing ellipsesInfo
- 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
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)
Abstract
186,222. Hardt, J., and Sobawa, J. Aug. 9, 1921. No Patent granted (Sealing fee not paid). Ellipsographs. - In instruments of the kind in which an ellipse is drawn by passing a pen &c. round a stretched string, the string is passed through eyes 6, 7 in the extremities of legs 1, 2 which are pivoted at 21 and are integral with arms 23, 22 extending beyond the pivot. The arm 23 has an eye 24 through which the string passes, and the arm 22 has two such eyes 25, 26 and also carries a sleeve 27 having eyes 29, 30 to which the ends of the string can be secured, so that the effective length cf the string can be altered by adjusting the sleeve 27 along the arm 22.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DENDAT346073D DE346073C (en) | 1921-08-09 | ||
CH96887D CH96887A (en) | 1921-08-09 | 1921-07-26 | Elliptical compass. |
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) |
DE (1) | DE346073C (en) |
GB (1) | GB186222A (en) |
-
0
- DE DENDAT346073D patent/DE346073C/de active Active
-
1921
- 1921-07-26 CH CH96887D patent/CH96887A/en unknown
- 1921-08-09 GB GB2115721A patent/GB186222A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE346073C (en) | |
CH96887A (en) | 1922-11-16 |
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