FR2695352A1 - Pair of compasses for drawing arcs or circles - Google Patents

Pair of compasses for drawing arcs or circles Download PDF

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Publication number
FR2695352A1
FR2695352A1 FR9210720A FR9210720A FR2695352A1 FR 2695352 A1 FR2695352 A1 FR 2695352A1 FR 9210720 A FR9210720 A FR 9210720A FR 9210720 A FR9210720 A FR 9210720A FR 2695352 A1 FR2695352 A1 FR 2695352A1
Authority
FR
France
Prior art keywords
sphere
compasses
circle
compass
tip
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.)
Granted
Application number
FR9210720A
Other languages
French (fr)
Other versions
FR2695352B1 (en
Inventor
De Souza Etienne Nicolas
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.)
SOUZA ETIENNE DE
Original Assignee
SOUZA ETIENNE DE
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 FR9210720A priority Critical patent/FR2695352B1/en
Application filed by SOUZA ETIENNE DE filed Critical SOUZA ETIENNE DE
Priority to ES93919431T priority patent/ES2099471T3/en
Priority to CA002144089A priority patent/CA2144089A1/en
Priority to PCT/FR1993/000860 priority patent/WO1994005514A1/en
Priority to US08/397,119 priority patent/US5555630A/en
Priority to JP6506937A priority patent/JPH08501033A/en
Priority to EP93919431A priority patent/EP0660784B1/en
Priority to DE69306961T priority patent/DE69306961T2/en
Priority to AT93919431T priority patent/ATE146727T1/en
Publication of FR2695352A1 publication Critical patent/FR2695352A1/en
Application granted granted Critical
Publication of FR2695352B1 publication Critical patent/FR2695352B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • B43L9/16—Features common to compasses, dividers, and callipers

Landscapes

  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)

Abstract

The drawing compasses have two pivoted branches, one with a point about which the compasses pivot, and the other with a holder for a pencil or lead which traces the arc or circle. The pivot point has a rotatable rounded tip (7) on the end of a spindle (8) set in a fixed body (9). The tip is covered partly or completely with a non-slip surface which is placed at the centre of the arc or circle to be drawn.Each branch has a mechanism which ensures that both its points lie perpendicular to the surface on which the drawing is made.

Description

Description
Pointe de compas de sécurité
Domaine technique : instruments de dessin de précision - compas
La présente invention porte sur la pointe de compas, constituant l'axe de rotation de l'instrument.Description
Safety compass tip
Technical area: precision drawing instruments - compass
The present invention relates to the compass tip, constituting the axis of rotation of the instrument.

Le problème technique posé est celui de la pointe acérée dont étaient dotés tous les compas ; ce qui présentait le double inconvénient d'un danger manifeste en particulier pour les jeunes utilisateurs et de la perforation du papier pouvant constituer une gêne pour le dessinateur.The technical problem posed is that of the sharp point with which all the compasses were fitted; which had the double disadvantage of a manifest danger in particular for young users and of the perforation of the paper which could constitute a nuisance for the designer.

La solution proposée : le dispositif selon l'invention permet de remédier au danger et à l'inconvénient exposés ci-dessus en dotant le compas d'une pointe de sécurité, de forme totalement ou partiellement sphérique qui constitue le centre du cercle ou de l'arc de cercle à tracer, la stabilité de l'instrument et la précision de son tracé étant assurées par la surface antidérapante de la sphère du fait du matériau dont elle est constituée, du traitement ou du revêtement de sa surface.The solution proposed: the device according to the invention makes it possible to remedy the danger and the disadvantage exposed above by providing the compass with a safety tip, of totally or partially spherical shape which constitutes the center of the circle or of the 'arc of a circle to be traced, the stability of the instrument and the precision of its tracing being ensured by the non-slip surface of the sphere due to the material of which it is made, the treatment or coating of its surface.

Divers modes de fixation de la sphère ou portion de sphère constitutive de la pointe de sécurité du compas sont proposés ils en assurent la mobilité dans le plan perpendiculaire à la branche supportant cette sphère. La sphère ou portion de sphère est mobile autour d'un axe ou à l'intérieur d'une orbite de laquelle elle affleure ; I'axe ou l'orbite la maintenant à l'extrémité de la branche de l'instrument.Various methods of fixing the sphere or portion of sphere constituting the safety tip of the compass are proposed, they ensure its mobility in the plane perpendicular to the branch supporting this sphere. The sphere or portion of sphere is mobile around an axis or inside an orbit of which it is flush; The axis or orbit holding it at the end of the branch of the instrument.

Le maniement de l'instrument reste celui du compas traditionnel, à pointe perforante.The handling of the instrument remains that of the traditional compass, with a piercing tip.

Applications: le nouvel instrument apportera une plus grande sécurité à ses jeunes utilisateurs, en particulier les écoliers. II pourrait également se révéler fort utile au dessinateur lorsqu'il souhaite éviter de perforer le support sur lequel il travaille. Applications: the new instrument will provide greater security for its young users, especially schoolchildren. It could also prove to be very useful to the designer when he wishes to avoid perforating the support on which he is working.

Claims (1)

RevendicationsClaims 1" Pointe de compas de sécurité, caractérisée par une forme totalement ou partiellement sphérique de l'extrémité en contact avec le papier et qui constitue le centre du cercle ou de l'arc de cercle à tracer 2" Pointe de compas selon revendication 10, caractérisée en ce que la sphère ou portion de sphère est réalisée en un matériau ou présente un traitement ou un revêtement de surface lui conférant une surface de contact antidérapante. 1 "Safety compass tip, characterized by a totally or partially spherical shape of the end in contact with the paper and which constitutes the center of the circle or of the arc of a circle to be traced 2" Compass tip according to claim 10, characterized in that the sphere or portion of the sphere is made of a material or has a surface treatment or coating giving it a non-slip contact surface. 3 Pointe de compas selon revendication 1" ou 2", caractérisée en ce que la sphère ou portion de sphère est mobile autour d'un axe ou à l'intérieur de d'urne orbite de laquelle elle affleure ; I'axe ou l'orbite la maintenant à l'extrémité de la branche de l'instrument.  3 compass point according to claim 1 "or 2", characterized in that the sphere or portion of the sphere is movable around an axis or within an orbit of which it is flush; The axis or orbit holding it at the end of the branch of the instrument.
FR9210720A 1992-09-08 1992-09-08 Safety compass tip. Expired - Fee Related FR2695352B1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
FR9210720A FR2695352B1 (en) 1992-09-08 1992-09-08 Safety compass tip.
CA002144089A CA2144089A1 (en) 1992-09-08 1993-09-08 Safety compass
PCT/FR1993/000860 WO1994005514A1 (en) 1992-09-08 1993-09-08 Compass with safety pivot
US08/397,119 US5555630A (en) 1992-09-08 1993-09-08 Compass with safety pivot
ES93919431T ES2099471T3 (en) 1992-09-08 1993-09-08 COMPASSES WITH SAFETY PIVOT.
JP6506937A JPH08501033A (en) 1992-09-08 1993-09-08 Compass with safety branch
EP93919431A EP0660784B1 (en) 1992-09-08 1993-09-08 Compass with safety pivot
DE69306961T DE69306961T2 (en) 1992-09-08 1993-09-08 CIRCUIT WITH SAFETY TIPS
AT93919431T ATE146727T1 (en) 1992-09-08 1993-09-08 COMPASSES WITH SAFETY TIPES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9210720A FR2695352B1 (en) 1992-09-08 1992-09-08 Safety compass tip.

Publications (2)

Publication Number Publication Date
FR2695352A1 true FR2695352A1 (en) 1994-03-11
FR2695352B1 FR2695352B1 (en) 1995-02-24

Family

ID=9433315

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9210720A Expired - Fee Related FR2695352B1 (en) 1992-09-08 1992-09-08 Safety compass tip.

Country Status (1)

Country Link
FR (1) FR2695352B1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR555978A (en) * 1922-09-13 1923-07-10 Universal rod compass
US2074102A (en) * 1935-06-20 1937-03-16 Elmer W Christy Blackboard compass
US2981001A (en) * 1959-08-06 1961-04-25 Carl T Schnell Blackboard compass
CH360507A (en) * 1958-08-13 1962-02-28 Zweifel Alois Compass foot, especially for blackboard compasses
FR1323435A (en) * 1961-07-11 1963-04-05 Multipurpose compass

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR555978A (en) * 1922-09-13 1923-07-10 Universal rod compass
US2074102A (en) * 1935-06-20 1937-03-16 Elmer W Christy Blackboard compass
CH360507A (en) * 1958-08-13 1962-02-28 Zweifel Alois Compass foot, especially for blackboard compasses
US2981001A (en) * 1959-08-06 1961-04-25 Carl T Schnell Blackboard compass
FR1323435A (en) * 1961-07-11 1963-04-05 Multipurpose compass

Also Published As

Publication number Publication date
FR2695352B1 (en) 1995-02-24

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