EP0395971A1 - Bow compass - Google Patents

Bow compass Download PDF

Info

Publication number
EP0395971A1
EP0395971A1 EP90107604A EP90107604A EP0395971A1 EP 0395971 A1 EP0395971 A1 EP 0395971A1 EP 90107604 A EP90107604 A EP 90107604A EP 90107604 A EP90107604 A EP 90107604A EP 0395971 A1 EP0395971 A1 EP 0395971A1
Authority
EP
European Patent Office
Prior art keywords
spring clip
compass
legs
spring
free ends
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
EP90107604A
Other languages
German (de)
French (fr)
Other versions
EP0395971B1 (en
Inventor
Dietmar Seelig
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.)
M. SEELIG KG REISSZEUGFABRIK
Rotring International GmbH and Co KG
Original Assignee
M SEELIG KG Reisszeugfabrik
Rotring Werke Riepe KG
Rotring International GmbH and Co KG
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 M SEELIG KG Reisszeugfabrik, Rotring Werke Riepe KG, Rotring International GmbH and Co KG filed Critical M SEELIG KG Reisszeugfabrik
Publication of EP0395971A1 publication Critical patent/EP0395971A1/en
Application granted granted Critical
Publication of EP0395971B1 publication Critical patent/EP0395971B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B43L9/20—Pivots
    • 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
    • B43L9/02—Compasses

Definitions

  • the invention relates to a spring clip with a spring clip with its free ends in engagement with the rear ends of the compass legs and with an adjusting device extending through the compass legs, the rear ends of the compass legs being in supportive engagement with one another.
  • the spring clip In a known spring clip of this type (DE-GM 80 22 805), the spring clip consists of a circular steel strip of constant material thickness, the free ends of which extend in recesses on the outer sides of the rear ends of the compass legs and thus exert a spring force on them Compass legs in To cooperate with the adjusting device having a grub screw in a defined position, the compass legs with their rear ends via a recess provided in one of the compass legs and a provided in the other compass leg, extending into the recess in supporting engagement with each other.
  • the spring clips made of steel used in the known spring clip circuits represent a weak point in the overall circuit structure in that they are subject to oxidation. This cannot be prevented by coatings in the form of chrome plating or nickel plating, because the spring clip deforms repeatedly during operation and the coating thereby becomes at least cracked, if not partially chipped. At the parts of the coating that have become defective, the spring clip then oxidizes, which at least considerably impairs the visual impression of the compass.
  • a spring clip of the type mentioned at the outset is designed according to the invention in such a way that the spring clip is made of plastic, for example fiber-reinforced polyamide, and its material cross section increases continuously from both free ends and to the same extent.
  • the spring clip made of plastic according to the invention has the same spring properties as the otherwise common spring clip made of steel.
  • a problem with spring clip compasses is that when the compass legs are spread apart up to their maximum spread position, the spring clip can detach from its holder and fall off when the spring action of the spring clip has decreased, i.e. the spring clip due to aging, etc. has lost part of its elasticity.
  • projections extending substantially transversely to the plane containing the longitudinal axes of the two compass legs can be provided at the free ends of the spring clip, which engage in the area of the rear ends of the Circular legs are formed, circular arc-shaped guide slots.
  • a peg-shaped handle element can be integrally formed on this outside between its free ends, so that the spring clip and handle element can be produced in one piece in one operation, while previously several work steps were required to produce the spring clip and peg-shaped handle element and to form a threaded hole in the spring clip into which the handle element can be screwed.
  • each of the toothed segments of the spring clip according to the invention can consist of plastic, and in order to achieve a particularly uniform and precise guidance, each of the toothed segments can consist of two adjacent sections, the toothings of which are offset from one another in the direction of rolling.
  • toothed segments are made of plastic in a spring clip assembly according to the invention, it is expedient to also form the guide slots in these toothed segments for the engagement of projections provided on the spring clip.
  • the spring clip compass shown has compass legs 1, 2, at the front ends of which clamping screws 3, 4 are fastened in the usual way, with the aid of which a needle tip 6 or a lead lead 5 can be fastened in the front end of the respective compass leg.
  • a guide device which, in the usual way, has a threaded pin 11 with threads of different direction and can be rotated with the aid of a knurled wheel 12 which is fixed non-rotatably on it, so that the thread of the Setscrew 11 with nuts, not shown, held by rivets 9 and 10 in the compass legs 1 and 2 can cause an adjustment of the opening angle of the compass legs 1, 2.
  • toothed segments 7, 8 are fastened, which are in supportive engagement with one another and which have a shift towards the free rear end of the associated compass leg (Fig 2).
  • each of the toothed segments consists of two adjacent sections 8 'and 8 vernum, which are offset from each other in the rolling direction, so that where one section carries a tooth, the other section has a tooth gap . As is known, this results in a uniform and precise guidance of the tooth segments during the rolling.
  • the spring clip 13 is made of plastic, for example of fiber-reinforced polyamide, both glass fibers and carbon fibers being suitable as fibers.
  • the material thickness of the spring clip 13, as can be seen in FIG. 1 increases continuously and uniformly from the free ends to the rear central region, on which a peg-shaped grip element 14 is formed on the outside.
  • the desired spring behavior is achieved by this increase in material thickness. It should be noted that it is also possible to achieve this spring behavior by continuously increasing the width of the spring clip alone or by a combination of the increases in the width and thickness of the spring clip.
  • the free ends of the spring clip 13 engage in recesses on the outer sides of the compass legs, so that the spring clip 13 is held in position there.
  • the free ends of the spring clip 13 are approximately C-shaped in section, and the legs of this C adjoining the base extend along the side faces of the compass legs.
  • the inward projections 16 formed on the free ends of the legs are brought into engagement with circular guide slots 15 (FIG. 2) by elastic bending of the spring clip ends.

Landscapes

  • Clamps And Clips (AREA)
  • Springs (AREA)

Abstract

The invention relates to a spring clip compass having a spring clip (13) which is in engagement by its free ends with the rear ends of the compass limbs (1, 2) and having an adjusting device (9-12) which extends through the compass limbs, the rear ends of the compass limbs being in supporting engagement with one another. A special feature of this spring clip compass is that the spring clip consists of plastic material and its material cross-section increases from both free ends continuously to the same degree in each case. <IMAGE>

Description

Die Erfindung bezieht sich auf einen Federbügelzirkel mit einem mit seinen freien Enden in Eingriff mit den hinteren Enden der Zirkelschenkel stehenden Federbügel und mit einer sich durch die Zirkelschenkel erstreckenden Einstellvorrich­tung, wobei die hinteren Enden der Zirkelschenkel in abstüt­zendem Eingriff miteinander stehen.The invention relates to a spring clip with a spring clip with its free ends in engagement with the rear ends of the compass legs and with an adjusting device extending through the compass legs, the rear ends of the compass legs being in supportive engagement with one another.

Bei einem bekannten Federbügelzirkel dieser Art (DE-GM 80 22 805) besteht der Federbügel aus einem kreisbogenförmig ausgebildeten Stahlstreifen konstanter Materialstärke, dessen freie Enden sich in Aussparungen an den Außenseiten der hinteren Enden der Zirkelschenkel erstrecken und somit auf diese eine Federkraft ausüben, um die Zirkelschenkel in Zusammenwirken mit der einen Gewindestift aufweisenden Ein­stellvorrichtung in einer definierten Lage zu halten, wobei die Zirkelschenkel mit ihren hinteren Enden über eine in einem der Zirkelschenkel vorgesehenen Vertiefung und eine im anderen Zirkelschenkel vorgesehene, sich in die Vertiefung erstrecken­de Nase in abstützendem Eingriff miteinander stehen.In a known spring clip of this type (DE-GM 80 22 805), the spring clip consists of a circular steel strip of constant material thickness, the free ends of which extend in recesses on the outer sides of the rear ends of the compass legs and thus exert a spring force on them Compass legs in To cooperate with the adjusting device having a grub screw in a defined position, the compass legs with their rear ends via a recess provided in one of the compass legs and a provided in the other compass leg, extending into the recess in supporting engagement with each other.

Die bei den bekannten Federbügelzirkeln verwendeten Federbügel aus Stahl stellen insofern einen Schwachpunkt des gesamten Zirkelaufbaus dar, als sie einer Oxidation unterliegen. Dies kann auch nicht durch Beschichtungen in Form von Verchromen oder Vernickeln verhindert werden, weil sich der Federbügel im Betrieb wiederholt verformt und dadurch die Beschichtung zumindest rissig wird, wenn nicht gar teilweise abplatzt. An den so schadhaft gewordenen Stellen der Beschichtung kommt es dann zu einer Oxidation des Federbügels, was zumindest den optischen Eindruck des Zirkels erheblich beeinträchtigt.The spring clips made of steel used in the known spring clip circuits represent a weak point in the overall circuit structure in that they are subject to oxidation. This cannot be prevented by coatings in the form of chrome plating or nickel plating, because the spring clip deforms repeatedly during operation and the coating thereby becomes at least cracked, if not partially chipped. At the parts of the coating that have become defective, the spring clip then oxidizes, which at least considerably impairs the visual impression of the compass.

Es ist Aufgabe der Erfindung, einen Federbügelzirkel dahin­gehend zu verbessern, daß das Aussehen seines Federbügels nicht durch Oxidationen beeinträchtigt wird.It is an object of the invention to improve a spring clip that the appearance of its spring clip is not affected by oxidation.

Zur Lösung dieser Aufgabe wird ein Federbügelzirkel der eingangs erwähnten Art erfindungsgemäß derart ausgestaltet, daß der Federbügel aus Kunststoff, beispielsweise faserver­stärktem Polyamid besteht und sein Materialquerschnitt von beiden freien Enden kontinuierlich und in jeweils gleichem Maße zunimmt.To achieve this object, a spring clip of the type mentioned at the outset is designed according to the invention in such a way that the spring clip is made of plastic, for example fiber-reinforced polyamide, and its material cross section increases continuously from both free ends and to the same extent.

Durch die Verwendung von Kunststoff als Material für den Federbügel wird das Problem der Oxidation auf einfache Weise vermieden, und der an sich wegen seiner Materialeigenschaften als Federbügel nicht geeignete Kunststoff erhält dadurch die gewünschten Federeigenschaften des Federbügels, daß sein Materialquerschnitt und vorzugsweise seine Materialdicke von den freien Enden weg kontinuierlich zunimmt, wodurch erreicht wird, daß der erfindungsgemäß vorgesehene Federbügel aus Kunststoff die gleichen Federeigenschaften hat, wie der sonst übliche Federbügel aus Stahl.By using plastic as a material for the spring clip, the problem of oxidation is avoided in a simple manner, and the plastic, which is unsuitable because of its material properties as a spring clip, thereby obtains the desired spring properties of the spring clip that its material cross section and preferably its material thickness of the free ends continuously increases, whereby it is achieved that the spring clip made of plastic according to the invention has the same spring properties as the otherwise common spring clip made of steel.

Bei Federbügelzirkeln besteht ein Problem darin, daß der Federbügel beim Aufspreizen der Zirkelschenkel bis in ihre maximal gespreizte Lage sich aus seiner Halterung lösen und abfallen kann, wenn die Federwirkung des Federbügels nachge­lassen hat, d.h. der Federbügel durch Alterung u.ä. einen Teil seiner Elastizität verloren hat.A problem with spring clip compasses is that when the compass legs are spread apart up to their maximum spread position, the spring clip can detach from its holder and fall off when the spring action of the spring clip has decreased, i.e. the spring clip due to aging, etc. has lost part of its elasticity.

Um bei dem erfindungsgemäßen Federbügelzirkel ein derartiges Lösen des Federbügels von den Zirkelschenkeln zu vermeiden, können an den freien Enden des Federbügels sich im wesent­lichen quer zur die Längsachsen der beiden Zirkelschenkel enthaltenden Ebene erstreckende Vorsprünge vorgesehen sein, die in Eingriff mit im Bereich der hinteren Enden der Zirkelschenkel ausgebildeten, kreisbogenförmigen Führschlitzen stehen.In order to avoid such a detachment of the spring clip from the compass legs in the spring clip compass according to the invention, projections extending substantially transversely to the plane containing the longitudinal axes of the two compass legs can be provided at the free ends of the spring clip, which engage in the area of the rear ends of the Circular legs are formed, circular arc-shaped guide slots.

Diese am Federbügel vorgesehenen Vorsprünge, die beispiels­weise einstückig mit dem Federbügel ausgebildet sein können, stehen also immer in Eingriff mit den Führschlitzen, so daß sie auch dann, wenn die Zirkelschenkel in ihre maximal aufgespreizte Lage bewegt sind und infolge Elastizitätsver­lustes des Federbügels an sich die Gefahr besteht, daß sich dieser von den Zirkelschenkeln löst, den Federbügel in seiner vorgegebenen Lage halten.These projections provided on the spring clip, which can be formed, for example, in one piece with the spring clip, are always in engagement with the guide slots, so that even when the compass legs are moved into their maximally spread position and as a result of loss of elasticity of the spring clip, the danger per se there is that this detaches from the compass legs, hold the spring clip in its predetermined position.

Bei der Herstellung des erfindungsgemäßen Federbügels kann an diesem mittig zwischen seinen freien Enden an seiner Außen­seite ein zapfenförmiges Griffelement angeformt sein, so daß sich Federbügel und Griffelement in einem Arbeitsgang ein­stückig herstellen lassen, während bisher mehrere Arbeits­ schritte erforderlich waren, um Federbügel und zapfenförmiges Griffelement herzustellen sowie eine Gewindebohrung im Feder­bügel auszubilden, in die das Griffelement eingeschraubt werden kann.In the manufacture of the spring clip according to the invention, a peg-shaped handle element can be integrally formed on this outside between its free ends, so that the spring clip and handle element can be produced in one piece in one operation, while previously several work steps were required to produce the spring clip and peg-shaped handle element and to form a threaded hole in the spring clip into which the handle element can be screwed.

Um eine zuverlässige und genaue Führung und Abstützung der von der Kraft des Federbügels beaufschlagten Zirkelschenkel zu erreichen, können ihre hinteren Enden über an ihnen vorge­sehene Zahnsegmente in abstützendem Eingriff stehen.In order to achieve reliable and precise guidance and support of the compass legs acted upon by the force of the spring clip, their rear ends can be in supportive engagement via toothed segments provided on them.

Ein derartiger Eingriff der Schenkel eines Zirkels über Zahnsegmente ist zwar von Einsatzzirkeln her bekannt, jedoch wurde bei Federbügelzirkeln bisher eine derartige Art der Abstützung nicht vorgesehen.Such an engagement of the legs of a circle via toothed segments is known from insert circles, but such a type of support has not previously been provided in spring clip circles.

Die Zahnsegmente des erfindungsgemäßen Federbügelzirkels kön­nen aus Kunststoff bestehen, und um eine besonders gleich­mäßige und genaue Führung zu erreichen, kann jedes der Zahnsegmente aus zwei nebeneinander liegenden Abschnitten bestehen, deren Zahnungen in Abwälzrichtung gegeneinander ver­setzt sind.The toothed segments of the spring clip according to the invention can consist of plastic, and in order to achieve a particularly uniform and precise guidance, each of the toothed segments can consist of two adjacent sections, the toothings of which are offset from one another in the direction of rolling.

Wenn bei einem erfindungsgemäßen Federbügelzirkel die Zahn­segmente aus Kunststoff hergestellt sind, ist es zweckmäßig, in diesen Zahnsegmenten auch die Führschlitze zum Eingriff von am Federbügel vorgesehenen Vorsprüngen auszubilden.If the toothed segments are made of plastic in a spring clip assembly according to the invention, it is expedient to also form the guide slots in these toothed segments for the engagement of projections provided on the spring clip.

Die Erfindung wird im folgenden anhand der ein Ausführungsbei­spiel zeigenden Figuren näher erläutert.

  • Figur 1 zeigt in einer Ansicht einen Federbügelzirkel.
  • Figur 2 zeigt in perspektivischer Darstellung das obere Ende eines Zirkelschenkels mit einem Zahnsegment.
  • Figur 3 zeigt einen Schnitt entlang der Linie III-III aus Figur 1.
The invention is explained in more detail below with reference to the figures showing an embodiment.
  • Figure 1 shows in a view a spring clip.
  • Figure 2 shows a perspective view of the upper end of a compass leg with a tooth segment.
  • FIG. 3 shows a section along the line III-III from FIG. 1.

Der dargestellte Federbügelzirkel hat Zirkelschenkel 1, 2, an deren vorderen Enden in üblicher Weise Klemmschrauben 3, 4 befestigt sind, mit deren Hilfe eine Nadelspitze 6 bzw. eine Bleimine 5 im vorderen Ende des jeweiligen Zirkelschenkels befestigt werden kann.The spring clip compass shown has compass legs 1, 2, at the front ends of which clamping screws 3, 4 are fastened in the usual way, with the aid of which a needle tip 6 or a lead lead 5 can be fastened in the front end of the respective compass leg.

Im Bereich zwischen den Enden der Zirkelschenkel 1, 2 ist eine Führeinrichtung vorhanden, die in üblicher Weise einen Gewin­destift 11 mit Gewinden unterschiedlicher Gangrichtung auf­weist und mit Hilfe eines unverdrehbar auf ihm befestigten Rändelrades 12 verdreht werden kann, so daß sich infolge des Eingriffs der Gewinde des Gewindestiftes 11 mit nicht darge­stellten, mittels Nieten 9 und 10 in den Zirkelschenkeln 1 und 2 gehaltener Muttern eine Verstellung des Öffnungswinkels der Zirkelschenkel 1, 2 bewirken läßt.In the area between the ends of the compass legs 1, 2 there is a guide device which, in the usual way, has a threaded pin 11 with threads of different direction and can be rotated with the aid of a knurled wheel 12 which is fixed non-rotatably on it, so that the thread of the Setscrew 11 with nuts, not shown, held by rivets 9 and 10 in the compass legs 1 and 2 can cause an adjustment of the opening angle of the compass legs 1, 2.

An den hinteren Enden der Zirkelschenkel 1, 2 sind aus Kunststoff, beispielsweise aus faserverstärktem Polyamid her­gestellte Zahnsegmente 7, 8 befestigt, die in abstützendem Ein­griff miteinander stehen und die einer eine Verlagerung in Richtung auf das freie hintere Ende des zugehörigen Zirkel­schenkels verhindernden Absatz aufweisen (Figur 2).To the rear ends of the compass legs 1, 2 are made of plastic, for example made of fiber-reinforced polyamide, toothed segments 7, 8 are fastened, which are in supportive engagement with one another and which have a shift towards the free rear end of the associated compass leg (Fig 2).

Wie Figur 2 für das Zahnsegment 8 zeigt, besteht jedes der Zahnsegemente aus zwei nebeneinander liegenden Abschnitten 8′ und 8˝, die in Abwälzrichtung gegeneinander versetzt sind, so daß sich dort, wo der eine Abschnitt einen Zahn trägt, der andere Abschnitt eine Zahnlücke aufweist. Dadurch ergibt sich, wie im übrigen bekannt, eine gleichmäßige und genaue Führung der Zahnsegmente beim Abwälzen.As Figure 2 shows for the toothed segment 8, each of the toothed segments consists of two adjacent sections 8 'and 8 versetzt, which are offset from each other in the rolling direction, so that where one section carries a tooth, the other section has a tooth gap . As is known, this results in a uniform and precise guidance of the tooth segments during the rolling.

Mit den hinteren Enden der Zirkelschenkel 1 und 2 steht ein Federbügel 13 in Eingriff, der die Zirkelschenkel 1, 2, wie bei Federbügelzirkeln üblich, im hinteren Endbereich zusammen­drückt und so positioniert hält. Der Federbügel 13 ist aus Kunststoff hergestellt, beispielsweise aus faserverstärktem Polyamid, wobei als Fasern sowohl Glasfasern als auch Kohlen­stoffasern geeignet sind. Um die gewünschte Federwirkung zu erreichen, nimmt die Materialdicke des Federbügels 13, wie in Figur 1 zu erkennen, von den freien Enden kontinuierlich und gleichmäßig bis zum hinteren Mittelbereich zu, an dem an der Außenseite ein zapfenförmiges Griffelement 14 angeformt ist. Durch diese Zunahme der Materialdicke wird das gewünschte Federverhalten erreicht. Es sei darauf hingewiesen, daß es auch möglich ist, dieses Federverhalten durch eine kontinuier­liche Zunahme allein der Breite des Federbügels oder aber durch eine Kombination der Zunahmen von Breite und Dicke des Federbügels zu erreichen.With the rear ends of the compass legs 1 and 2 is a spring clip 13 in engagement, which compresses the compass legs 1, 2, as is usual with spring clip compasses, in the rear end region and holds them in position. The spring clip 13 is made of plastic, for example of fiber-reinforced polyamide, both glass fibers and carbon fibers being suitable as fibers. In order to achieve the desired spring action, the material thickness of the spring clip 13, as can be seen in FIG. 1, increases continuously and uniformly from the free ends to the rear central region, on which a peg-shaped grip element 14 is formed on the outside. The desired spring behavior is achieved by this increase in material thickness. It should be noted that it is also possible to achieve this spring behavior by continuously increasing the width of the spring clip alone or by a combination of the increases in the width and thickness of the spring clip.

Wie insbesondere in den Figuren 2 und 3 zu erkennen ist, greifen die freien Enden des Federbügels 13 in Aussparungen an den Außenseiten der Zirkelschenkel, so daß der Federbügel 13 dort in seiner Lage gehalten wird. Zusätzlich sind die freien Enden des Federbügels 13, wie Figur 3 zeigt, im Schnitt in etwa C-förmig ausgebildet, und die an die Basis anschließenden Schenkel dieses C erstrecken sich entlang der Seitenflächen der Zirkelschenkel. Die an den freien Enden der Schenkel ausgebildeten, nach innen gerichteten Vorsprünge 16 werden durch elastisches Aufbiegen der Federbügelenden in Eingriff mit kreisförmigen Führschlitzen 15 (Figur 2) gebracht. Auf diese Weise ist ein sicherer Eingriff zwischen Federbügel 13 und Zirkelschenkeln 1, 2 hergestellt, durch die die Verschwen­kung der Zirkelschenkel 1, 2 nicht beeinträchtigt wird, weil die Vorsprünge 16 in den Führschlitzen 15 gleiten, durch den jedoch erreicht wird, daß der Federbügel 13 sich nicht ohne besondere Maßnahmen von den Zirkelschenkeln 1, 2 lösen kann.As can be seen in particular in Figures 2 and 3, the free ends of the spring clip 13 engage in recesses on the outer sides of the compass legs, so that the spring clip 13 is held in position there. In addition, as shown in FIG. 3, the free ends of the spring clip 13 are approximately C-shaped in section, and the legs of this C adjoining the base extend along the side faces of the compass legs. The inward projections 16 formed on the free ends of the legs are brought into engagement with circular guide slots 15 (FIG. 2) by elastic bending of the spring clip ends. In this way, a secure engagement between spring bracket 13 and compass legs 1, 2 is made, by which the pivoting of the compass legs 1, 2 is not impaired because the projections 16 slide in the guide slots 15, but by which it is achieved that the spring bracket 13th cannot detach itself from the compass legs 1, 2 without special measures.

Claims (7)

1. Federbügelzirkel mit einem mit seinen freien Enden in Eingriff mit den hinteren Enden der Zirkelschenkel (1, 2) stehenden Federbügel (13) und mit einer sich durch die Zirkelschenkel (1, 2) erstreckenden Einstellvorrichtung (11, 12), wobei die hinteren Enden der Zirkelschenkel (1, 2) in abstützendem Eingriff miteinander stehen, dadurch gekenn­zeichnet, daß der Federbügel (13) aus Kunststoff besteht und sein Materialquerschnitt von beiden freien Enden kontinuierlich und in jeweils gleichem Maße zunimmt.1. spring bracket compass with one with its free ends in engagement with the rear ends of the compass legs (1, 2) standing spring bracket (13) and with an extending through the compass legs (1, 2) adjusting device (11, 12), the rear The ends of the compass legs (1, 2) are in supportive engagement with one another, characterized in that the spring clip (13) is made of plastic and its material cross section increases continuously from both free ends and to the same extent in each case. 2. Federbügelzirkel nach Anspruch 1, dadurch gekennzeichnet, daß an den freien Enden des Federbügels (13) sich im wesentlichen quer zur die Lägsachsen der beiden Zirkel­schenkel (1, 2) enthaltenden Ebene erstreckende Vorsprün­ge (16) vorgesehen sind, die in Eingriff mit im Bereich der hinteren Enden der Zirkelschenkel (1, 2) ausgebilde­ten, kreisbogenförmigen Führschlitzen (15) stehen.2. spring clip compass according to claim 1, characterized in that at the free ends of the spring clip (13) substantially transverse to the longitudinal axes of the two compass legs (1, 2) containing plane extending projections (16) are provided, which engage in Area of the rear ends of the circular legs (1, 2) formed, circular arc-shaped guide slots (15). 3. Federbügelzirkel nach Anspruch 1 oder 2, dadurch gekenn­zeichnet, daß mittig zwischen den freien Enden des Federbügels (13) an dessen Außenseite ein zapfenförmiges Griffelement (14) angeformt ist.3. spring clip according to claim 1 or 2, characterized in that a peg-shaped handle element (14) is integrally formed between the free ends of the spring clip (13) on the outside thereof. 4. Federbügelzirkel nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die hinteren Enden der Zirkelschen­kel (1, 2) über an ihnen vorgesehene Zahnsegmente (7, 8) in abstützendem Eingriff stehen.4. spring clip compass according to one of claims 1 to 3, characterized in that the rear ends of the compass legs (1, 2) are provided in supportive engagement via toothed segments (7, 8) provided on them. 5. Federbügelzirkel nach Anspruch 4, dadurch gekennzeichnet, daß die Zahnsegmente (7, 8) aus Kunststoff bestehen.5. spring clip according to claim 4, characterized in that the toothed segments (7, 8) consist of plastic. 6. Federbügelzirkel nach Anspruch 3 oder 4, dadurch gekenn­zeichnet, daß jedes der Zahnsegmente (z.B. 8) aus zwei nebeneinander liegenden Abschnitten (8′, 8˝) besteht, deren Zahnung in Abwälzrichtung gegeneinander versetzt ist.6. spring bow compass according to claim 3 or 4, characterized in that each of the toothed segments (eg 8) consists of two adjacent sections (8 ', 8˝), the toothing is displaced in rolling direction against each other. 7. Federbügelzirkel nach Anspruch 2 und einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, daß die Führschlitze (15) in den Zahnsegmenten (7, 8) ausgebildet sind.7. spring clip according to claim 2 and one of claims 4 to 6, characterized in that the guide slots (15) in the tooth segments (7, 8) are formed.
EP90107604A 1989-05-05 1990-04-21 Bow compass Expired - Lifetime EP0395971B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8905644U 1989-05-05
DE8905644U DE8905644U1 (en) 1989-05-05 1989-05-05 Spring clip compass

Publications (2)

Publication Number Publication Date
EP0395971A1 true EP0395971A1 (en) 1990-11-07
EP0395971B1 EP0395971B1 (en) 1993-08-11

Family

ID=6838962

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90107604A Expired - Lifetime EP0395971B1 (en) 1989-05-05 1990-04-21 Bow compass

Country Status (2)

Country Link
EP (1) EP0395971B1 (en)
DE (2) DE8905644U1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2661981A1 (en) * 1990-05-10 1991-11-15 Partes Intertech Kg MECHANISM FOR COMPASS HEAD.
DE4205072A1 (en) * 1991-02-23 1992-08-27 Emskirchen Reisszeugfabrik Spring-bow drawing compasses - with legs covered with non-metallic material such as beech-wood

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9101209U1 (en) * 1991-02-02 1991-04-25 M. Seelig KG Reißzeugfabrik, 8535 Emskirchen Spring clip compass

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2296279A (en) * 1941-06-17 1942-09-22 Miles H Hamilton Beam compass
CH524479A (en) * 1971-09-22 1972-06-30 Kern & Co Ag Straight guidance on a compass
FR2371302A1 (en) * 1976-11-19 1978-06-16 Helix International Ltd DRAWING INSTRUMENT
US4120092A (en) * 1977-04-11 1978-10-17 Hanson Goodwin F Plastic injection molded bow compass
DE3808511C1 (en) * 1988-03-15 1989-05-11 Intertech Zeichengeraete Guenther Partes Kg, 8535 Emskirchen, De Fine-adjustment compass
DE3838473C1 (en) * 1988-03-15 1989-06-01 Intertech Zeichengeraete Guenther Partes Kg, 8535 Emskirchen, De Fine adjustment compass

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2296279A (en) * 1941-06-17 1942-09-22 Miles H Hamilton Beam compass
CH524479A (en) * 1971-09-22 1972-06-30 Kern & Co Ag Straight guidance on a compass
FR2371302A1 (en) * 1976-11-19 1978-06-16 Helix International Ltd DRAWING INSTRUMENT
US4120092A (en) * 1977-04-11 1978-10-17 Hanson Goodwin F Plastic injection molded bow compass
DE3808511C1 (en) * 1988-03-15 1989-05-11 Intertech Zeichengeraete Guenther Partes Kg, 8535 Emskirchen, De Fine-adjustment compass
DE3838473C1 (en) * 1988-03-15 1989-06-01 Intertech Zeichengeraete Guenther Partes Kg, 8535 Emskirchen, De Fine adjustment compass

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2661981A1 (en) * 1990-05-10 1991-11-15 Partes Intertech Kg MECHANISM FOR COMPASS HEAD.
DE4205072A1 (en) * 1991-02-23 1992-08-27 Emskirchen Reisszeugfabrik Spring-bow drawing compasses - with legs covered with non-metallic material such as beech-wood

Also Published As

Publication number Publication date
EP0395971B1 (en) 1993-08-11
DE59002255D1 (en) 1993-09-16
DE8905644U1 (en) 1990-09-06

Similar Documents

Publication Publication Date Title
DE3687293T2 (en) COMPLETELY ARTIFIED STORAGE DEVICE.
DE2742112A1 (en) HOLDER FOR A HAND SHOWER
DE3345431C2 (en) Seat belt guide rail assembly
DE2433358C2 (en) Dental attachment for the detachable attachment of dentures to the rest of the dentition
DE2447811C2 (en) Hinge with a base body that can be fastened to a piece of furniture
DE3151019C2 (en) Device for attaching the upper deflection fitting for a three-point seat belt to the body of a motor vehicle
DE2729231C3 (en) Pliers with adjustable axis
EP0010260B1 (en) Screw clamp
EP0395971A1 (en) Bow compass
DE1485223B2 (en) Thread guide for sewing machines
DE3047263C2 (en) Length-adjustable temple arms
DE2718627C2 (en) Compass head for a spring bow compass
WO2005028786A1 (en) Device for fastening door handles
DE8900207U1 (en) Connecting part of a door, window or similar frame
DE700095C (en) Locking head for spindles
EP0193817A2 (en) Hair curler
DE2712260C2 (en) shuttle
DE7438000U (en) Corner bearing for turn-tilt sashes
DE1911258C (en) Extension for a circle
DE2911652C2 (en) Screwdriver with exchangeable screw bit for slotted screws, Phillips screws or the like
EP0088311A1 (en) Clamping device for a construction element, especially a screw
DE2447222C3 (en) Adjustable sight for firearms
DE102007015607A1 (en) Arrangement e.g. for double hollow article, has first hollow part directly attached to fastener and to second hollow part
DE9005624U1 (en) Position-adjustable holder for pads on glasses frames
DE1927303B2 (en) Scissors with flat metal blades - mounted on plastic handles with angled supporting surfaces

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19900910

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT

17Q First examination report despatched

Effective date: 19920824

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: M. SEELIG KG REISSZEUGFABRIK

Owner name: ROTRING INTERNATIONAL GMBH & CO KG.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

ET Fr: translation filed
REF Corresponds to:

Ref document number: 59002255

Country of ref document: DE

Date of ref document: 19930916

ITF It: translation for a ep patent filed

Owner name: ING. A. GIAMBROCONO & C

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19931102

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19950228

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19950410

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19950420

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19960421

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19960421

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19961227

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19970101

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050421