WO1983002588A1 - Compass for drawing ellipses - Google Patents

Compass for drawing ellipses Download PDF

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Publication number
WO1983002588A1
WO1983002588A1 PCT/FR1983/000021 FR8300021W WO8302588A1 WO 1983002588 A1 WO1983002588 A1 WO 1983002588A1 FR 8300021 W FR8300021 W FR 8300021W WO 8302588 A1 WO8302588 A1 WO 8302588A1
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WO
WIPO (PCT)
Prior art keywords
arm
compass according
compass
lever
tracer
Prior art date
Application number
PCT/FR1983/000021
Other languages
French (fr)
Inventor
Hans Rauner
Original Assignee
Hans Rauner
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 Hans Rauner filed Critical Hans Rauner
Publication of WO1983002588A1 publication Critical patent/WO1983002588A1/en

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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
    • 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
    • B43L11/05—Non-circular-curve-drawing instruments for drawing conic sections for drawing ellipses with gears

Definitions

  • the present invention relates to the instruments used for drawing and more particularly the compasses for drawing ellipses.
  • the compass object of the present invention allows to re ⁇ mediate all these drawbacks. It is of the type with a single eccentric and a single .biellette whose position can be easily adjusted by a retractable screwdriver rod, which can reach the adjustment screw of the eccentric only when the tracing point falls on a point of one of the diameters of the ellipse.
  • the tracer arm is coupled to the lever which transmits the movements of the eccentric, by a screw allowing a millimeter adjustment of the spacing of said tracer arm relative to the central pivot of the compass.
  • the tracer arm is articulated and includes a quick adjustment device located downstream of the millimeter and quick adjustments.
  • the tip of the central pivot and the plotter support are telescopic and retractable. They undergo the action of two springs, one flexible to start, the other hard for the end. race. They have ball bearings for their axial and radial guides and needle shoes for their longitudinal linear guidance, but cannot rotate.
  • the compass has three feet which support the whole instrument, so that the user can let go of it and pay attention only to the adjustments which it maneuver- thus more easily.
  • the feet are foldable and can be brought, by rotary movement, one against the other to allow the compass to be stored in a small volume.
  • the compass is equipped, at its upper part, with a transverse lever which facilitates the driving of the tracer arm around the central pivot and the adjustment of the tracer to the diameters chosen of the ellipse.
  • Figure 1 shows an elevational view of the compass in question.
  • Figure 2 is a detail view in partial section of the head for transmitting the movements of the tracer arm.
  • Figure 3 is a detail view in elevation section of the support. the tracing tip.
  • Figures 4 and 5 show two variants of the support for the tracing tip.
  • Figure 6 is a detailed sectional view of part of the central pivot and the toggle.
  • Figure 7 shows the detail of the coupling of the tracer arm to the movement transmission lever.
  • Figure 8 is a detail view of the eccentric drive pinion.
  • Figure 9 shows the detail in perspective of the organs for controlling the movements of the transmission lever.
  • Figure 10 is a detail view of the eccentric slide and its adjusting screw.
  • Figure 11 shows the perspective detail of an extension system of the distance and the length of the feet of the compass.
  • Figure 12 is a perspective view showing the detail of one snap of the feet on the motion control head.
  • the drive shaft 1 has a ridged surface 2 and. a cap 3 which serves to hold the compass and a lever 4 which facilitates tracing.
  • the axis 1 joins the control head 5, of which it is integral, crossing a dome 'transparen ⁇ te 6 and taking support against a spring 7 which is housed there.
  • a second dome 8 encloses the control head 5 and the transmission members described below. Between the two coupo- les 6 and 8 is mounted a socket 9 made integral with the dome 6 by means of a screw 10 and comprising the articulation 11 of a foot 12 whose lower ends is fitted with a sheath 13 for a tip 14 blocked by a screw and a knurled 15.
  • the second dome 8 is fixed to the bush 9 by means of a shouldered washer 16 and a screw 17.
  • the sleeve 9 can slide two superimposed rings 18 respectively 19; that 18 comprising the articulation 20 of a second leg 21; that 19 comprising the articulation 22 of a third foot 23.
  • the exact positioning of the three feet 12, 21 and 23 in a triangle as illustrated in FIG. 1, is achieved by means of a plate 24, fixed at 25 of FIG. 12, comprising two lugs 26, respectively ent 27 which can penetrate into two notches 28, respectively 29 made in the rings 18, respectively 19.
  • the control head 5 drives, by an axis 30, a pinion 31 which meshes with a toothed crown 32 cut inside the sleeve 9.
  • the axis 30 carries a second pinion
  • the slide 37 of the pin 36 is moved by a screw 45, actuated by one.
  • ige screwdriver 46 passing through the mounting piece 42 and being able to affect a back-and-forth movement combined with a rotational movement illustrated by the arrows shown in FIG. 2.
  • the control head is extended by a pivot 47 comprising a toggle consisting of two plates 49 and 50 enclosing a spacer 48 fixed by rivets 51 and 52 and in which slides the centering tip 53 also guided by the tube 54 that forms the assembly of the two plates 49 and 50.
  • the slide between the tip 53 takes place against two springs 55, respectively 56, of which that 55 is more flexible and the other 56 at the end of the race more hard.
  • the axis 57 of the toggle joint serves as an articulation for a tracer bra 58 and a transmission lever 59 coupled to the bar 38 by a lug 60 which it comprises, engaged in an oblong slot 61 cutting the end of the lever as
  • the bar 38 for transmitting the movement back and forth to the lever 59 is guided by a groove hollowed out in the mounting plate 43.
  • the tracer arm 58 and the transmission lever 59 are coupled by a threaded rod 62 taking nuts in two joints 63 of the arm 58 and 64 of. lever 59 and whose end 65 is striated for the operation of 'said screw which allows the millimeter adjustment of the distance between the centering tip 53 and cell 66 for tracing Figure 1.
  • the hinge 63, crossed by the threaded rod 62 allows the lever 67 to quickly adjust the spacing between the two elements 53 and 66.
  • the articulated part 68 of the arm 58 supports, by means of the plate 70 which it retains clamped by means of a screw, a cylindrical body 71 in which a fur 72 is mounted fixed by a screw 78 and hollowed out by two longitudinal grooves 73, respectively 74 in which are guided two studs 75, respectively 76 of a tube '77 holding prisoner by means of a screw 79 the mechanical pencil 80 with, its lead or stylus 66.
  • the tube 77 movable in the fur 72, is engaged the head 81 of a rod 82 with wheel 83, transversing the plug 84 covering the cylindrical body 71.
  • This rod undergoes the action of a spring 85 at l 'against which it can act ⁇ as well as on.the tube 77. by means of the washer 81 and a transverse pin 86.
  • FIG. 4 _ A variant of this device is shown in FIG. 4 _ •
  • the rod 82 is mounted in a triangular slide 87 guided by needle shoes 88 and made integral with the mechanical pencil or plotter holder 80.
  • This assembly allows the ent marker to slide up and down under the action of the tig-e 82 following the chosen position but prevents it from turning on itself.
  • Several superimposed pins 89 passing through the rod 82 make it possible to choose the position of the tracer relative to the sheet of paper on which the elelysis must be traced.
  • FIG. 11 represents an extension device for the feet of the compass.
  • Each ring 18 and 19 has a flat nose 95 which extends radially and on which a slide 96 can slide, locked by a screw 97 and forming an articulation 98 for a bent piece 99 playing the role of slide for the slide that each foot of the compass locked by a screw 100.
  • Figure 8 shows the detail of the pin 36 driven by the pinion of the pinion 34.
  • the groove 36a dug at the base of the Ion touri allows adjustment and retention of the slide 37 under the action of the screw 45 which passes through it.
  • the operation of the compass takes place in the following manner.
  • the central point 53 is planted in the center of the ellipse to be traced.
  • the tracer 66 is adjusted to these diameters by means of the screw 62 e of the screwdriver rod 46, all without the lead or stylus 66 touching the paper but while being close enough for precise and convenient adjustment.
  • the plotter By pressing on the cap 3, the plotter is brought into contact with the paper and it suffices to cause the rotation of the control head 5 by means of the lever 4. Thanks to the fixed toothed crown 32, the rotation of the head 5 controls that in ⁇ verses pinions 31 and 33, the latter causing the rotation of the pinion .34 in the direction initially printed on the head 5 by the lever 4.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Toys (AREA)

Abstract

The compass comprises a plotter (58) hinged to a central pivot (53) holding a centering point, coupled to a handling lever (59) by means of a threaded rod (65). A shaft (2) provided with a cap (3) and with a transverse lever (4) facilitates the handling of the instrument. Means contained in the control head (6) impart a reciprocating motion to the lever (59) of which the amplitude is adjusted by means of a screwdriver rod (46). Said compass comprises three retractable legs (12, 21, 23) which support the compass during the adjustment and the plotting, as well as means for preventing the plotter (77) from touching the paper during the adjustments.

Description

Compas pour tracer des ellipses. Compass for drawing ellipses.
La présente invention concerne les instruments utilisés pour dessiner et plus particulièrement les compas pour tracer des ellipses.The present invention relates to the instruments used for drawing and more particularly the compasses for drawing ellipses.
Les instruments actuellement connus ne donnent pas satis faction parce qu'ils sont imprécis d'une part, complexes et d'un maniement- malaisé d'autre part.The currently known instruments are not satisfactory because they are imprecise on the one hand, complex and difficult to handle on the other.
S |il s'agit d'instruments à glissières perpendiculaires, l'ellipse ne peut être tracée qu'en s'y reprenant à deux fois Il faut planter la pointe d'une "punaise" au centre de l'el- lipse à tracer et positionner les réglettes tantôt d'un côté, tantôt de l'autre côté de ladite pointe pour tracer l'ellipse d'où l'imprécision et l'incommodité.If | they are instruments with perpendicular slides, the ellipse can only be traced by repeating it twice. It is necessary to plant the point of a "pushpin" in the center of the ellipse at trace and position the strips sometimes on one side, sometimes on the other side of said point to trace the ellipse hence the imprecision and inconvenience.
S'il s'agit de compas à excentriques et bielles, ne com¬ portant qu'un seul pied, il est difficile d'ajuster les dia- mètres de l'ellipse à tracer et la moindre inclinaison du bras porteur de la pointe centrale, pendant le traçage, se traduit par l'obtention d'une ellipse géométriquement inexac¬ te. D'autre part, le mécanisme transformant la rotation du compas en mouvements de rapprochement et d' éloignement du bras traceur, étant situé au-dessous de la genouillère assem¬ blant les d'eux bras du compas, il cache partiellement l'el-' .. lipse en cours de traçage. Il est aussi particulièrement ma¬ laisé de régler la position des excentriques qui définissent la proportion de l'ellipse, du fait que les deux bielles doivent manoeuvrer ensemble et que la position de leur excen¬ trique respectif ne peut être réglée que séparément. Egale¬ ment, comme pour compenser la longueur de course du support de la pointe de traçage, il faut incliner le compas en consé¬ quence, les traçages d'ellipses sont inexacts sur le plan géométrique . Par ailleurs, la pointe de traçage est toujours en contact avec la feuille de papier de sorte que, pendant l'ajustage du compas aux diamètres de l'ellipse à obtenir des traces inopportunes subsistent, car le support de la pointeIn the case of eccentric and connecting rod compasses, bearing only one foot, it is difficult to adjust the diameters of the ellipse to be traced and the slightest inclination of the support arm of the central point , during tracing, results in obtaining a geometrically inexact ellipse. On the other hand, the mechanism transforming the rotation of the compass into movements of approaching and moving away from the tracer arm, being located below the toggle assembly of the arms of the compass, it partially hides the el- ' . . lipse during tracing. It is also particularly ma¬ laise to adjust the position of the eccentrics which define the proportion of the ellipse, because the two connecting rods must operate together and that the position of their respective eccentric can only be adjusted separately. Equally, as if to compensate for the length of travel of the support for the tracing point, the compass must be tilted accordingly, the ellipses tracings are inaccurate on the geometric plane. Furthermore, the tracing point is always in contact with the sheet of paper so that, during the adjustment of the compass to the diameters of the ellipse to obtain inopportune traces remain, because the support of the point
O de traçage ne peut être ni soulevé, ni'bloqué en position haut ou basse. Enfin, ce genre d'instrument ne comporte qu'un seul pied, ce qui ne suffit pas pour maintenir le compas debout sans le Hicher et ce pied n'étant pas repliable, le rangement du compas nécessite une boite volumineuse.O tracing can be neither raised nor 'blocked up or down position. Finally, this kind of instrument has only one foot, which is not enough to keep the compass upright without the Hicher and this foot is not foldable, storing the compass requires a large box.
Le compas objet de la présente invention permet de re¬ médier à tous ces inconvénients. Il est du genre à un seul excentrique et à une seule .biellette dont la position peut être facilement réglée par une tige tournevis escamotable, qui ne peut atteindre la vis de réglage de l'excentrique qu'au moment où la pointe de traçage tombe sur un point de l'un des diamètres de l'ellipse.The compass object of the present invention allows to re¬ mediate all these drawbacks. It is of the type with a single eccentric and a single .biellette whose position can be easily adjusted by a retractable screwdriver rod, which can reach the adjustment screw of the eccentric only when the tracing point falls on a point of one of the diameters of the ellipse.
Le bras traceur est accouplé au levier qui transmet les mouvements de l'excentrique, par une vis permettant un régla- ge millimétrique de l'écartement dudit bras traceur par rap¬ port au pivot central du compas.The tracer arm is coupled to the lever which transmits the movements of the eccentric, by a screw allowing a millimeter adjustment of the spacing of said tracer arm relative to the central pivot of the compass.
Le bras traceur est articulé et comporte un dispositif de réglage rapide situé en aval des réglages millimétrique et rapide. La pointe du pivot central et le support du traceur sont téléscopiques et escamotables. Ils subissent l'action de deux ressorts, l'un souple pour commencer, l'-autre dur pour la fin de. course. Ils comportent des douilles à billes pour leurs guidages axial et radial et des patins à aiguilles pour leur guidage linéaire longitudinal, mais ne peuvent tourner.The tracer arm is articulated and includes a quick adjustment device located downstream of the millimeter and quick adjustments. The tip of the central pivot and the plotter support are telescopic and retractable. They undergo the action of two springs, one flexible to start, the other hard for the end. race. They have ball bearings for their axial and radial guides and needle shoes for their longitudinal linear guidance, but cannot rotate.
Le compas comporte trois pieds qui supportent l'ensemble de l'instrument, de sorte que 1'utilisateur peut le lâcher et ne prêter attention qu'aux réglages qu'il manoeuvré- ainsi plus aisément. Les pieds sont rabattables et peuvent être amenés, par mouvement rotatif, l'un contre l'autre pour permet tre le rangement du compas sous un faible volume. •The compass has three feet which support the whole instrument, so that the user can let go of it and pay attention only to the adjustments which it maneuver- thus more easily. The feet are foldable and can be brought, by rotary movement, one against the other to allow the compass to be stored in a small volume. •
Les mouvements rotatifs des pieds sont limités par des moyens qui leur permettent de prendre la position qui corres¬ pond à un triangle, d'où un gain de temps appréciable pour la mise en oeuvre du compas.The rotary movements of the feet are limited by means which allow them to assume the position which corresponds to a triangle, hence an appreciable time saving for the implementation of the compass.
Le compas est équipé, à sa partie supérieure, d'un levie transversal qui facilite l'entraînement du bras traceur autou du pivot central et l'ajustage du traceur aux diamètres chois
Figure imgf000004_0001
de 1 ' ellipse .The compass is equipped, at its upper part, with a transverse lever which facilitates the driving of the tracer arm around the central pivot and the adjustment of the tracer to the diameters chosen
Figure imgf000004_0001
of the ellipse.
Les dessins annexés montrent à titre indicatif, non restrictif, une réalisation pratique de l'invention.The accompanying drawings show by way of non-restrictive illustration, a practical embodiment of the invention.
La figure 1 représente une vue en élévation du compas dont il s ' agit .Figure 1 shows an elevational view of the compass in question.
La figure 2 est une vue de détail en coupe partielle de la tête de transmission des mouvements du bras traceur.Figure 2 is a detail view in partial section of the head for transmitting the movements of the tracer arm.
La figure 3 est une vue de détail .en coupe d'élévation du support de. la pointe de traçage. Les figures 4 et 5 montrent deux variantes du support de la pointe de traçage.Figure 3 is a detail view in elevation section of the support. the tracing tip. Figures 4 and 5 show two variants of the support for the tracing tip.
La figure 6 est une vue de détail en coupe d'une partie du pivot central et de la genouillère.Figure 6 is a detailed sectional view of part of the central pivot and the toggle.
La figure 7 présente le détail de l'accouplement du bras traceur au levier de transmission des mouvements.Figure 7 shows the detail of the coupling of the tracer arm to the movement transmission lever.
La figure 8 est une vue de détail du pignon de commande de l'excentrique.Figure 8 is a detail view of the eccentric drive pinion.
La Figure 9 montre le détail en perspective des organes de -commande des mouvements du levier de transmission. La figure 10 est une vue de détail du coulisseau excentré et de sa vis de réglage.Figure 9 shows the detail in perspective of the organs for controlling the movements of the transmission lever. Figure 10 is a detail view of the eccentric slide and its adjusting screw.
La figure 11 représente le détail en perspective d'un système de rallonge de l'écartement et de la longueur des pieds du compas. La figure 12 est une vue en perspective montrant le détai de 1 'encliquetage des pieds sur la tête de commande des mouvements .Figure 11 shows the perspective detail of an extension system of the distance and the length of the feet of the compass. Figure 12 is a perspective view showing the detail of one snap of the feet on the motion control head.
L'axe d'entraînement 1 comporte une surface striée 2 et. un capuchon 3 qui servent à tenir le compas et un levier 4 qui facilite le traçage . L'axe 1 rejoint la tête de commande 5, dont elle est solidaire, en traversant une coupole 'transparen¬ te 6 et en prenant appui contre un ressort 7 qui y est logé. Une deuxième coupole 8 enferme la tête de commande 5 et les organes de transmission décrits ci-après. Entre les deux coupo- les 6 et 8 est montée une douille 9 rendue solidaire de la coupole 6 au moyen d'une vis 10 et comportant l'articulation 11 d'un pied 12 dont l'extrémités inférieure est équipée d'un fourreau 13 pour une pointe 14 bloquée par une vis et un oleté 15. La deuxième coupole 8 est fixée à la douille 9 au moyen d'une rondelle épaulée 16 et d'une vis 17.The drive shaft 1 has a ridged surface 2 and. a cap 3 which serves to hold the compass and a lever 4 which facilitates tracing. The axis 1 joins the control head 5, of which it is integral, crossing a dome 'transparen¬ te 6 and taking support against a spring 7 which is housed there. A second dome 8 encloses the control head 5 and the transmission members described below. Between the two coupo- les 6 and 8 is mounted a socket 9 made integral with the dome 6 by means of a screw 10 and comprising the articulation 11 of a foot 12 whose lower ends is fitted with a sheath 13 for a tip 14 blocked by a screw and a knurled 15. The second dome 8 is fixed to the bush 9 by means of a shouldered washer 16 and a screw 17.
Autour de la douille 9 peuvent coulisser deux bagues superposées 18 respectivement 19 ; celle 18 comportant l'ar- ticulation 20 d'un deuxième pied 21 ; celle 19 comportant l'articulation 22 d'un troisè e pied 23. Le positionnement exact des trois pieds 12, 21 et 23 en triangle comme l'illus tre la figure 1, est réalisé au moyen d'une plaquette 24, fixée en 25 de la figure 12, comportant deux ergots 26, res- pective ent 27 qui peuvent pénétrer dans deux entailles 28, respectivement 29 pratiquées dans les bagues 18, respective ment 19.Around the sleeve 9 can slide two superimposed rings 18 respectively 19; that 18 comprising the articulation 20 of a second leg 21; that 19 comprising the articulation 22 of a third foot 23. The exact positioning of the three feet 12, 21 and 23 in a triangle as illustrated in FIG. 1, is achieved by means of a plate 24, fixed at 25 of FIG. 12, comprising two lugs 26, respectively ent 27 which can penetrate into two notches 28, respectively 29 made in the rings 18, respectively 19.
La tête de commande 5 entraîne, par un axe 30, un pigno 31 qui engrène avec une couronne dentée 32 taillée à l'inté- rieur de la douille 9. L'axe 30 porte un deuxième pignonThe control head 5 drives, by an axis 30, a pinion 31 which meshes with a toothed crown 32 cut inside the sleeve 9. The axis 30 carries a second pinion
33 en prise avec un troisième pignon 34 entraînant, par un axe 35, un tourillon 36 comportant un coulisseau 37 accouplé à une barrette 38 au moyen d'une biellette 39. Les pièces de. ontage 40,41,42 sont fixées à la tête de commande 5 par une plaque 43 et deux vis 44.33 in engagement with a third pinion 34 driving, by an axis 35, a pin 36 comprising a slide 37 coupled to a bar 38 by means of a link 39. The parts. ontage 40,41,42 are fixed to the control head 5 by a plate 43 and two screws 44.
Le coulisseau 37 du tourillon 36 est mû par une vis 45, actionnée par une. ige tournevis 46, traversant la pièce de montage 42 et pouvant affecter un mouvement de va-et-vien combiné avec un mouvement de rotation illustrés par les flèches montrées figure 2.The slide 37 of the pin 36 is moved by a screw 45, actuated by one. ige screwdriver 46, passing through the mounting piece 42 and being able to affect a back-and-forth movement combined with a rotational movement illustrated by the arrows shown in FIG. 2.
La tête de commande, se prolonge par un pivot 47 compor¬ tant une genouillère constituée de deux plaquettes 49 et 50 enserrant une entretoise 48 fixée par des rivets 51 et 52 et dans laquelle coulisse la pointe de centrage 53 guidée aussi par le tube 54 que forme l'assemblage des deux pla¬ quettes 49 et 50. Le coulisse ent de la pointe 53 a lieu à l'encontre de deux ressorts 55, respectivement 56, dont celui 55 est plus souple et l'autre 56 en fin de course plus dur. L'axe 57 de la genouillère sert d'articulation à un bra traceur 58 et à un levier de transmission 59 accouplé à la barrette 38 par un ergot 60 qu'elle comporte,engagé dans une lumière oblongue 61 découpant l'extrémité du levier commeThe control head is extended by a pivot 47 comprising a toggle consisting of two plates 49 and 50 enclosing a spacer 48 fixed by rivets 51 and 52 and in which slides the centering tip 53 also guided by the tube 54 that forms the assembly of the two plates 49 and 50. The slide between the tip 53 takes place against two springs 55, respectively 56, of which that 55 is more flexible and the other 56 at the end of the race more hard. The axis 57 of the toggle joint serves as an articulation for a tracer bra 58 and a transmission lever 59 coupled to the bar 38 by a lug 60 which it comprises, engaged in an oblong slot 61 cutting the end of the lever as
Figure imgf000006_0001
l'illustrent les figures 7 et 9. La barrette 38 de transmissi du mouvement de va-et-vient au levier 59 est guidée par une rainure creusée dans la plaque de montage 43.
Figure imgf000006_0001
illustrated in FIGS. 7 and 9. The bar 38 for transmitting the movement back and forth to the lever 59 is guided by a groove hollowed out in the mounting plate 43.
Comme le montrent les figures 1 et 7, le bras traceur 58 et le levier de transmission 59 , sont accouplés par une tige filetée 62 prenant écrous dans deux articulations 63 du bras 58 et 64 du. levier 59 et dont l'extrémité 65 est striée pour la manoeuvre de' ladite vis qui permet le réglage millimé trique de l'écarte ent entre la pointe de centrage 53 et cell 66 de traçage figure 1.L ' articulation 63, traversée par la tige filetée 62 permet au levier 67 de régler rapidement l'écartement entre les deux éléments 53 et 66 .As shown in Figures 1 and 7, the tracer arm 58 and the transmission lever 59, are coupled by a threaded rod 62 taking nuts in two joints 63 of the arm 58 and 64 of. lever 59 and whose end 65 is striated for the operation of 'said screw which allows the millimeter adjustment of the distance between the centering tip 53 and cell 66 for tracing Figure 1.The hinge 63, crossed by the threaded rod 62 allows the lever 67 to quickly adjust the spacing between the two elements 53 and 66.
La partie articulée 68 du bras 58, pivotant autour de la goupille 69, supporte, par l'intermédiaire de la platine 70 qu'elle retient serrée au moyen d'une vis, un corps cylindri¬ que 71 dans lequel est montée une fourrure 72 fixée par une vis 78 et creusée de deux rainures longitudinales 73, res¬ pectivement 74 dans lesquelles sont guidés deux goujons 75, respectivement 76 d'un tube' 77 retenant prisonnier au moyen d'une vis 79 le porte-mine 80 avec, sa mine ou son stylet 66 . Dans le tube 77, mobile dans la fourrure 72, est enga¬ gée la tête 81 d'une tige 82 avec molette 83, transversant le bouchon 84 coiffant le corps cylindrique 71. Cette tige subit l'action d'un ressort 85 à l'encontre duquel elle peut agir^ ainsi que sur.le tube 77. au moyen de la rondelle 81 et d'une goupille transversale 86.-The articulated part 68 of the arm 58, pivoting around the pin 69, supports, by means of the plate 70 which it retains clamped by means of a screw, a cylindrical body 71 in which a fur 72 is mounted fixed by a screw 78 and hollowed out by two longitudinal grooves 73, respectively 74 in which are guided two studs 75, respectively 76 of a tube '77 holding prisoner by means of a screw 79 the mechanical pencil 80 with, its lead or stylus 66. In the tube 77, movable in the fur 72, is engaged the head 81 of a rod 82 with wheel 83, transversing the plug 84 covering the cylindrical body 71. This rod undergoes the action of a spring 85 at l 'against which it can act ^ as well as on.the tube 77. by means of the washer 81 and a transverse pin 86.-
Une variante de ce dispositif est représentée figure 4 _• La tige 82 est montée dans un coulisseau triangulaire 87 guidé par des patins à aiguilles 88 et rendu solidaire du porte- mine ou porte-traceur 80. Ce montaqe permet le coulisse ent du traceur de haut en bas sous l'action de la tig-e 82 sui¬ vant la position choisie mais l'empêche de tourner sur lui- même. Plusieurs goupilles superposées 89 traversant la tige 82 permettent de choisir la position du traceur par rapport à la feuille de papier sur laquelle doit être tracée l'el¬ lipse .A variant of this device is shown in FIG. 4 _ • The rod 82 is mounted in a triangular slide 87 guided by needle shoes 88 and made integral with the mechanical pencil or plotter holder 80. This assembly allows the ent marker to slide up and down under the action of the tig-e 82 following the chosen position but prevents it from turning on itself. Several superimposed pins 89 passing through the rod 82 make it possible to choose the position of the tracer relative to the sheet of paper on which the elelysis must be traced.
Une autre variante de ce porte-traceur est montrée figu¬ res - Il s'agit de jumelles 90 guidant deux tiges' 91, respec-Another variant of this plotter holder is shown in fig. - These are binoculars 90 guiding two rods ' 91, respec-
OMPI tivement 92 du porte-mine ou stylet 80. Une vis 93 permet de bloquer le traceur à la hauteur désirée. Les jumelles 90 sont fixées à la partie articulée 68 du bras 58 au moyen d'une queue 94. La figure 11 représente un dispositif de rallonge pour les pieds du compas. Chaque bague 18 et 19 comporte un nez plat 95 qui s'étend radialement et sur lequel peut coulisser une glissière 96 bloquée par une vis 97 et formant articula¬ tion 98 pour une pièce coudée 99 jouant le rôle de glissière pour le coulisseau que constitue chaque pied du compas blo¬ qué par une vis 100.WIPO 92 of the mechanical pencil or stylus 80. A screw 93 makes it possible to block the plotter at the desired height. The binoculars 90 are fixed to the articulated part 68 of the arm 58 by means of a tail 94. FIG. 11 represents an extension device for the feet of the compass. Each ring 18 and 19 has a flat nose 95 which extends radially and on which a slide 96 can slide, locked by a screw 97 and forming an articulation 98 for a bent piece 99 playing the role of slide for the slide that each foot of the compass locked by a screw 100.
La figure 8 montre le détail du tourillon 36 entraîné par l'axe du pignon 34. La rainure 36a creusée à la base du touri Ion permet le réglage et la retenue du coulisseau 37 sous l'action de la vis 45 qui le traverse.Figure 8 shows the detail of the pin 36 driven by the pinion of the pinion 34. The groove 36a dug at the base of the Ion touri allows adjustment and retention of the slide 37 under the action of the screw 45 which passes through it.
Le fonctionnement du compas a lieu de la manière suivante On plante la pointe centrale 53 au centre de l'ellipse à tracer. Après avoir choisi les diamètres de l'ellipse, on règle sur ces diamètres le traceur 66 au moyen de la vis 62 e de la tige-tournevis 46, tout cela sans que la mine ou le stylet 66 ne touche le papier mais tout en étant assez près pour un réglage précis et commode.The operation of the compass takes place in the following manner. The central point 53 is planted in the center of the ellipse to be traced. After having chosen the diameters of the ellipse, the tracer 66 is adjusted to these diameters by means of the screw 62 e of the screwdriver rod 46, all without the lead or stylus 66 touching the paper but while being close enough for precise and convenient adjustment.
En appuyant sur le capuchon 3 on amène le traceur au con¬ tact du papier et il suffit d'entraîner la rotation de la tête de commande 5 au moyen du levier 4. Grâce à la couronne dentée fixe 32, la rotation de la tête 5 commande celle in¬ verse des pignons 31 et 33, ce dernier entraînant la rotation du pignon .34 dans le sens initialement imprimé à la tête 5 par le levier 4. La rotation du pignon 34 entraîne celle du tourillon 36 qui lui est solidaire et par conséquent celle du coulisseau 37 dont 1 ' excentration, plus ou moins .importante, provoque, par l'intermédiaire de la bielette 39, le mouvement de va-et-vient de la barrette 38 qu'elle transmet au levier 59, qu'il répercute au bras traceur 58 et par suite au stylet 66 qui génère l'ellipse d'un seul trait et sans reprise.By pressing on the cap 3, the plotter is brought into contact with the paper and it suffices to cause the rotation of the control head 5 by means of the lever 4. Thanks to the fixed toothed crown 32, the rotation of the head 5 controls that in¬ verses pinions 31 and 33, the latter causing the rotation of the pinion .34 in the direction initially printed on the head 5 by the lever 4. The rotation of the pinion 34 causes that of the pin 36 which is integral with it and by Consequently, that of the slide 37, the more or less important offset of which causes, by means of the link 39, the reciprocating movement of the bar 38 which it transmits to the lever 59, which it echoes to the tracer arm 58 and consequently to the stylus 66 which generates the ellipse in a single stroke and without recovery.
Pour faciliter le montage de la coupole 6 et de la ron¬ delle épaulée 16, on prévoit de creuser deux gorges dans la douille 9 dans lesquelles peuvent s'engager des petits bossa¬ ges pratiqués dans lesdites coupole et rondelle. ^ 5.E To facilitate the mounting of the dome 6 and the shouldered ron¬ 16, provision is made to dig two grooves in the socket 9 in which small bossa¬ ges made in said dome and washer can engage. ^ 5.E

Claims

Revendications . Claims.
1 - Compas pour tracer des ellipses et des cercles, ca¬ ractérisé par le fait qu'il comprend en combinaison, un bras traceur (58) articulé à un pivot central retenant une pointe centrage (53), un levier (59) de manoeuvre accouplé au bras traceur (58) au moyen d'une tige filetée (62. et articulé au pivot central (47) par un axe (57) commun au 'bras traceur (58), un axe (2) pour entraîner le bras traceur (58) autour de la pointe de centrage (53), des moyens pour imprimer un mouvement de va-et-vient au levier (59) de manoeuvre du bras traceur (58), des moyens de réglage de l'amplitude des mouve¬ ments du levier de manoeuvre (59), des moyens pour empêcher le traceur ( 66 ) de toucher le papier pendant les réglages d'écartement du bras traceur (58) par rapport à la pointe de centrage (53) et des moyens repliables pour supporter le compas en position de traçage sans qu'il soit nécessaire de l tenir.1 - Compass for tracing ellipses and circles, characterized by the fact that it comprises in combination, a tracing arm (58) articulated to a central pivot retaining a centering point (53), an operating lever (59) coupled to the tracer arm (58) by means of a threaded rod (62. and articulated to the central pivot (47) by an axis (57) common to the tracer arm (58), an axis (2) for driving the tracer arm (58) around the centering point (53), means for imparting a back and forth movement to the lever (59) for operating the tracing arm (58), means for adjusting the amplitude of the movements elements of the operating lever (59), means for preventing the plotter (66) from touching the paper during the spacing adjustments of the plotter arm (58) relative to the centering tip (53) and folding means for supporting the compass in the plotting position without the need to hold it.
2 - Compas suivant la revendication 1, caractérisé par le fait que l'axe (l) d 'entraînement en rotation du traceur ( 66 ) est solidaire d'une tête de commande (5) supportant un pignon (31) entrainé en rotation inverse par une couronne dentée (32) creusée à l'intérieur d'une douille fixe (9), ledi pignon entraînant un deuxième pignon (33) engrenant un troi¬ sième pignon (34) solidaire d'un tourillon (36) supportant un coulisseau (37) réglable le long du diamètre dudit tourillon et jouant le rôle d'un excentrique imprimant un mouvement de va-et-vient, au moyen d'une biellette (39), à une barrette (38 accouplée au levier (59) de manoeuvre du bras traceur (58) pour lui transmettre ce mouvement par l'intermédiaire de la tige filetée (62) . 2 - Compass according to claim 1, characterized in that the axis (l) driving the tracer (66) in rotation is integral with a control head (5) supporting a pinion (31) driven in reverse rotation by a toothed crown (32) dug inside a fixed socket (9), said pinion driving a second pinion (33) meshing with a third pinion (34) secured to a pin (36) supporting a slide (37) adjustable along the diameter of said pin and playing the role of an eccentric imparting a back and forth movement, by means of a link (39), to a bar (38 coupled to the lever (59) of maneuvering the tracing arm (58) to transmit this movement to it via the threaded rod (62).
3 - Compas suivant les revendications 1 et 2', caractéri¬ sé par le fait que le coulisseau (37) du tourillon (36) est mû par une vis (45) entraînée en rotation, pour le réglage de l'e centration du coulisseau, par une tige tournevis (46) escamota ble. 3 - Compass according to claims 1 and 2 ' , characterized by the fact that the slide (37) of the pin (36) is moved by a screw (45) driven in rotation, for adjusting the centering of the slide , by a retractable screwdriver rod (46).
4 - Compas suivant les revendications 1 à 3, caractérisé par le fait que la tête de commande (5), les pignons (31,33,34 et l'excentrique qu'elle supporte, sont montés à coulissement par rapport à la douille fixe (9) à l'encontre d'un ressort de rappel (7) de l'axe (l) de manoeuvre du bras traceur (58).4 - Compass according to claims 1 to 3, characterized in that the control head (5), the pinions (31,33,34 and the eccentric which it supports, are slidably mounted relative to the fixed sleeve (9) against a return spring (7) of the axis (l) for operating the tracing arm (58).
5 - Compas suivant la revendication 1, caractérisé par le fait que la tête de commande se prolonge par un pivot central (47) fixant deux plaquettes (49,50) enserrant, sur un axe d'articulation (57), le bras traceur (58) et le levier de manoeuvre (59) et retenant, dans une entretoise (48), la tête de la pointe de centrage (53) à l'encontre de deux ressorts de rappel (55,56). 5 - Compass according to claim 1, characterized in that the control head is extended by a central pivot (47) fixing two plates (49,50) enclosing, on a hinge axis (57), the tracer arm ( 58) and the operating lever (59) and retaining, in a spacer (48), the head of the centering point (53) against two return springs (55,56).
6 - Compas suivant la revendication 1, caractérisé par le fait qu'un levier de réglage rapide (67) est situé en aval du _ réglage millimétrique que procure la tige filetée (62) prenant écrous dans des articulations (63,64) du bras traceur (58), respectivement du levier de manoeuvre ( 59 ) . 6 - Compass according to claim 1, characterized in that a quick adjustment lever (67) is located downstream of the millimeter adjustment provided by the threaded rod (62) taking nuts in joints (63,64) of the arm tracer (58), respectively the operating lever (59).
7 - Compas suivant la revendication 1, 'caractérisé par le fait que le bras traceur (58) comporte une partie articulée (68) supportant, d'une façon amovible, un porte-mine ou stylet (80) rétractable, dans un corps cylindrique (71), à l'encontre d'un ressort (85) et au moyen d'une tige (82) ledit traceur étant empêché de tourner sur lui-même grâce à deux ergots7 - Compass according to claim 1, ' characterized in that the tracing arm (58) comprises an articulated part (68) supporting, in a removable manner, a retractable mechanical pencil or stylus (80), in a cylindrical body (71), against a spring (85) and by means of a rod (82) said tracer being prevented from rotating on itself thanks to two lugs
(75,76) qu'il comporte engagés dans deux rainures longitudina les (73,74) creusées dans une fourrure (72) introduite en for ce dans le corps (71) une vis (78) permettant d'en assurer le blocage. (75,76) which it includes engaged in two longitudinal grooves (73,74) dug in a fur (72) introduced by force into the body (71) a screw (78) making it possible to ensure its blocking.
8 - Compas suivant la revendication 1, caractérisé par l fait que le porte-mine ou -traceur (80) est rétractable dans un corps cylindrique (71) au moyen d'une tirette (82)a goupil les (89) formant butées pour un coulisseau triangulaire (87) guidé par des patins à aiguilles (88) et solidaire dudit port traceur, l'ensemble étant fixé au bras (58).8 - Compass according to claim 1, characterized in that the mechanical pencil or plotter (80) is retractable in a cylindrical body (71) by means of a pull (82) has the pin (89) forming stops for a triangular slide (87) guided by needle pads (88) and secured to said tracer port, the assembly being fixed to the arm (58).
9 - Compas suivant la revendication 1, caractérisé par l fait que le porte-traceur (80) est fixé à deux tiges parallèl (91,92) coulissant dans des jumelles (90) et pouvant y être bloquées par une vis (93), lesdites jumelles étant montées à l'extrémité du bras traceur (58).9 - Compass according to claim 1, characterized in that the plotter holder (80) is fixed to two parallel rods (91,92) sliding in binoculars (90) and which can be blocked there by a screw (93), said binoculars being mounted at the end of the tracing arm (58).
10 - Compas suivant la revendication 1, caractérisé par l fait qu'il est supporté par trois pieds (12,21,23) dont l'un est équipé d'une pointe réglable (14). .' l 11 - Compas suivant les revendications 1, 2 et 10, caract risé par le fait que l'un des pieds (12) est articulé par un chape 10 - Compass according to claim 1, characterized in that it is supported by three feet (12,21,23) one of which is equipped with an adjustable tip (14). . 'l 11 - Compass according to claims 1, 2 and 10, characterized by the fact that one of the feet (12) is articulated by a yoke
(11) à la douille fixe (9) de la tête de commande, tandis que les deux autres pieds (21,23) sont respectivement articulés par des chapes (20,22) à deux bagues superposées (18,19) montées à coulissement rotatif autour de la douille (9) pour assurer la réunion desdits pieds sous un faible volume de rangement.(11) to the fixed socket (9) of the control head, while the two other feet (21,23) are respectively articulated by yokes (20,22) with two superimposed rings (18,19) mounted to slide rotating around the socket (9) to ensure the meeting of said feet under a small storage volume.
12 - Compas suivant les revendications 1, 10 et 11, carac térisé par. le fait que les trois pieds (12,21,23) sont équip de rallonges constiutées de glissières (96) sur lesquelles s'articulent des coudes (99) formant glissières pour lesdits pieds .12 - Compass according to claims 1, 10 and 11, characterized by. the fact that the three legs (12,21,23) are equipped with extensions consisting of slides (96) on which elbows (99) are articulated forming slides for said feet.
13 - Compas suivant les revendications 1, 10 à 12, carac¬ térisé par le fait que des moyens permettent de positionner automatiquement les pieds (12,21,23) à 120 ° les uns par rap port aux autres.13 - Compass according to claims 1, 10 to 12, characterized in that means make it possible to automatically position the feet (12,21,23) at 120° relative to each other.
14 - Compas suivant les revendications 1, 2, 11 et 13 caractérisé par le fait que deux ergots (26,27), portés par une plaquette fixe (24), pénètrent dans des entailles corres pondantes (28,29) creusées à la périphérie des bagues (18,19 supportant respectivement les pieds (21,23).14 - Compass according to claims 1, 2, 11 and 13 characterized in that two lugs (26,27), carried by a fixed plate (24), penetrate into corresponding notches (28,29) dug at the periphery rings (18,19 respectively supporting the feet (21,23).
15 - Compas suivant les revendications 1 et 2, caractéris par le fait que l'axe (1) de manoeuvre de la tête de comman¬ de (5) comprend une partie moletée (2) coiffée par un capu¬ chon concave (3) et comporte un levier transversal (4) faci-. litant le maniement de l'instrument.15 - Compass according to claims 1 and 2, characterized in that the axis (1) for operating the control head (5) comprises a knurled part (2) covered by a concave cap (3) and comprises a transverse lever (4) made easy. reading the handling of the instrument.
16 - Compas suivant les revendications 1 et 2, caractéris par le fait que les organes de commande du levier (59) de manoeuvre du bras traceur (58) sont enfermés dans deux cou¬ poles en plastique transparent, ou en métal et s-ont assem¬ blés au moyen de pièces de montage (40-43), de vis (44) et d'une collerette (16), que la coupole (6) et la collerette16 - Compass according to claims 1 and 2, characterized by the fact that the control members of the lever (59) for operating the tracing arm (58) are enclosed in two transparent plastic cups, or metal and are assembled by means of mounting parts (40-43), screws (44) and a flange (16), that the dome (6) and the flange
(16) sont clipées sur la douille (9) au moyen de bossages pratiqués dans lesdites coupole et collerette s'engageant dans des rainures correspondantes creusées dans ladite douille (9), ou fixées au moyen de vis (10,17).(16) are clipped onto the socket (9) by means of bosses made in said dome and collar engaging in corresponding grooves dug in said socket (9), or fixed by means of screws (10,17).
OMPI WIPO
PCT/FR1983/000021 1982-01-27 1983-01-27 Compass for drawing ellipses WO1983002588A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR82/01522820127 1982-01-27
FR8201522A FR2520299A1 (en) 1982-01-27 1982-01-27 COMPASS FOR TRACING ELLIPSES

Publications (1)

Publication Number Publication Date
WO1983002588A1 true WO1983002588A1 (en) 1983-08-04

Family

ID=9270519

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR1983/000021 WO1983002588A1 (en) 1982-01-27 1983-01-27 Compass for drawing ellipses

Country Status (3)

Country Link
EP (1) EP0099390A1 (en)
FR (1) FR2520299A1 (en)
WO (1) WO1983002588A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU619396B2 (en) * 1989-08-23 1992-01-23 Khalil Abdallah Ellipsograph compass

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR495738A (en) * 1913-08-11 1919-10-16 Georges Vigneron Ellipse compass
CH281463A (en) * 1950-08-06 1952-03-15 Wohlwend Ernst Elliptical compass.
US3808691A (en) * 1972-11-29 1974-05-07 R Chase Apparatus for drawing ellipses

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR495738A (en) * 1913-08-11 1919-10-16 Georges Vigneron Ellipse compass
CH281463A (en) * 1950-08-06 1952-03-15 Wohlwend Ernst Elliptical compass.
US3808691A (en) * 1972-11-29 1974-05-07 R Chase Apparatus for drawing ellipses

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU619396B2 (en) * 1989-08-23 1992-01-23 Khalil Abdallah Ellipsograph compass

Also Published As

Publication number Publication date
EP0099390A1 (en) 1984-02-01
FR2520299A1 (en) 1983-07-29

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