DE354253C - Elliptical compass - Google Patents
Elliptical compassInfo
- Publication number
- DE354253C DE354253C DE1921354253D DE354253DA DE354253C DE 354253 C DE354253 C DE 354253C DE 1921354253 D DE1921354253 D DE 1921354253D DE 354253D A DE354253D A DE 354253DA DE 354253 C DE354253 C DE 354253C
- Authority
- DE
- Germany
- Prior art keywords
- compass
- cord
- leg
- sliding
- elliptical
- 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
Description
Gegenstand der Erfindung ist ein als Schiebezirkel ausgebildeter Ellipsenzirkel, bei welchem die Ellipse unter Verwendung einer Schnur gezogen wird, die mit ihren beiden Enden an der einen Zirkelspitze angreift, während die andere Zirkelspitze bei der Benutzung des Zirkels in der durch die Schnur gebildeten Schleife liegt.The invention relates to an elliptical compass designed as a sliding compass which the ellipse is drawn using a string tied with both of them Attacks ends on one compass point, while the other compass point during use of the compass lies in the loop formed by the cord.
Um bei einer möglichst geringen Baulänge ίο dieses Zirkels möglichst große Spannweiten
für die Zirkelspitzen zu erzielen und trotzdem eine einfache und sichere Schnurführung beizubehalten,
ist gemäß der Erfindung auf dem Schiebeschenkel des Zirkels die eine Zirkelspitze
mittels einer Hülse verschiebbar angeordnet, welche die Aufwickelrolle für die Ellipsenschnur trägt und daher bei der Verschiebung
des Zirkelsdhenkels auf dem Schiebeschenkel mit dem Zirkelschenkel, aus dem die Schnur heraustritt, verschoben wird.
Gegen den Schiebeschenkel kann der andere Zirkelschenkel, um die Spannweite des Zirkels
noch vergrößern zu können, auch noch verschiebbar angeordnet sein.
Die Zeichnung zeigt den neuen Ellipsenzirkel inIn order to achieve the largest possible span widths for the compass tips with the smallest possible length ίο of this compass and still maintain a simple and safe line guidance, according to the invention the one compass point is arranged displaceably by means of a sleeve on the sliding leg of the compass, which the winding roller for the elliptical cord carries and is therefore displaced when the compass handle is moved on the sliding leg with the compass leg from which the cord emerges. The other compass leg can also be arranged displaceably against the sliding leg, in order to be able to increase the span of the compass even further.
The drawing shows the new elliptical compass in
Abb. ι zusammengeschoben undi in
Abb. 2 auseinandergezogen, während
Abb. 3 einen Schnitt nach der Line a-b der Abb. 1 darstellt.Fig. Ι pushed together undi in
Fig. 2 pulled apart while
Fig. 3 shows a section along the line from Fig. 1.
Der Schiebeschenkel 1 ist als Rohr ausgebildet und in ihm ist der Schenkel 2 der Zirkelspitze 3 in bekannter Weise verschiebbar. Gemäß der Erfindung ist der andere Zirkeli-'chenkel 4, aus dem die Schnur 8 heraustritt, an einer Hülse 5 befestigt, die auf dem Rohr 1 verschiebbar ist und durch geeignete Mittel in jeder Stellung zu dem Rohr festgestellt werden kann. Diese Hülse 5 trägt die Arme 6, in der die Aufwickelrolle 7 für die Zirkelschnur 8 drehbar gelagert ist. Durch eine Schraube 11 kann die Rolle 7 gegen die Arme 6 festgestellt werden.The sliding leg 1 is designed as a tube and in it the leg 2 of the compass tip 3 can be displaced in a known manner. According to the invention, the other compass leg 4, from which the cord 8 emerges, is attached to a sleeve 5 which is displaceable on the tube 1 and can be fixed in any position relative to the tube by suitable means. This sleeve 5 carries the arms 6 in which the take-up reel 7 for the compass cord 8 is rotatably mounted. The roller 7 can be fixed against the arms 6 by means of a screw 11.
Die auf die Rolle 7 aufgewickelte Schnur 8 ist durch die öffnungen 9 in das Innere des Zirkelschenkels 4 geführt und tritt aus den öffnungen 10 unten am Zirkelschenkel. Bei einer Verschiebung des Zirkelschenkels 4 gegen das Rohr 1 bewegt sich die Aufwickelrolle stets in dem gleichen Sinne mit, so daß 'beim Verstellen des Zirkels ein Verwirren des Fadens nicht stattfindet.The cord 8 wound on the roller 7 is through the openings 9 into the interior of the Compass leg 4 out and emerges from the openings 10 at the bottom of the compass leg. at a displacement of the compass leg 4 against the tube 1 moves the take-up roll always in the same sense, so that 'when adjusting the compass confusion of the thread does not take place.
Claims (1)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE354253T | 1921-10-05 | ||
| FR543374T | 1921-10-25 | ||
| GB5900/22A GB191645A (en) | 1921-10-05 | 1922-02-28 | An improved ellipsograph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE354253C true DE354253C (en) | 1922-06-06 |
Family
ID=9804722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1921354253D Expired DE354253C (en) | 1921-10-05 | 1921-10-05 | Elliptical compass |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE354253C (en) |
| FR (1) | FR543374A (en) |
| GB (1) | GB191645A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2654952A (en) * | 1951-03-01 | 1953-10-13 | Philip O Solon | Ellipsograph |
| US3224098A (en) * | 1964-09-08 | 1965-12-21 | Joseph D Terrell | Ellipse scriber |
-
1921
- 1921-10-05 DE DE1921354253D patent/DE354253C/en not_active Expired
- 1921-10-25 FR FR543374D patent/FR543374A/en not_active Expired
-
1922
- 1922-02-28 GB GB5900/22A patent/GB191645A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR543374A (en) | 1922-09-01 |
| GB191645A (en) | 1923-01-18 |
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