FR2825662A1 - Instrument set for tracing circles of any size for drawing or cutting out comprises pen or pencil and point holders, handle and suction cup - Google Patents

Abstract

The set (1) consists of a holder (2) for a pen, pencil or cutting instrument, a point holder (3), a handle (4) and a suction cup (5) for use on smooth surfaces such as glass. The components are fitted to a bar or ruler of the required length, using screws (27, 28, 29) to hold them in place. With the point or suction cup placed at the centre of the circle, a circumference of the required diameter can then be drawn.

Description

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Technical area
The invention relates to a kit, the elements of which are intended to be connected to a support (ruler, plate, etc.) to form a device allowing circular tracings (or cutouts) on paper, glass, etc.

 PRIOR ART In a known manner, the compass is designed for drawing circles. It is made up of two branches each terminated at their lower end, respectively by a point and by a writing instrument.

 A compass, whatever its size, is of limited capacity. Indeed, a total spacing of its branches can only give a circle with a maximum diameter. Therefore, the user who would like to draw (or cut out) a circle much larger than that obtained by his compass, does not succeed.

 The problem which the invention therefore proposes to solve is that of providing a kit composed of four elements, once connected to a support (member external to the kit), a rule for example, the whole forms an assembly which results in a device playing the role of a compass with unlimited capacity, without requiring complex equipment.

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Statement of the invention
The present invention therefore relates to a kit for school or professional use composed of an instrument holder (writing), a tip holder, a grip handle and a so-called free suction cup. This is used when necessary.

 Only the first three elements are removable, intended to be mounted together on the same support (body external to the kit); each of them consists of a so-called functional part connected to a fixing means called a fixing fork. It has the shape of a U, mainly formed by two straight tongues and parallel apart, and includes a locking means to ensure, precisely, the locking as well as the maintenance in position of the element on which it depends.

 The support used is generally long and rigid, which can be a ruler (rectangular, square, etc.), a flat plate forming a rectangle, a bar, a tube, a telescopic handle (round, square, etc.). , etc ...

 In other words, the invention consists in associating the removable elements of the kit with, for example, one of the supports mentioned above to result in an assembly which operates according to the known principles of a traditional compass and which therefore makes it possible to carry out tracings circular (or cutouts) of any dimensions.

 To be able to build such a device, it is necessary to have at its disposal, for example, a parallelepiped plate on which each removable element takes position; the instrument holder is fixed to one of the two ends of the plate, the tip holder and the grip handle take position along the plate, the first on the supposedly lower side and the second on the supposedly upper side.

 The position of the handle is roughly in the middle of the distance between the tip holder and the instrument holder.

 The latter is designed to carry a writing (cutting) instrument at the level of its functional part.

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 called the receiving part of the instrument. It is advantageously open on its face side to facilitate the installation of instruments of particular shapes, and visibly has a vee to serve as stability for instruments of cylindrical shapes.

 The functional part of the tip holder is called the lower tip holder part having a metal tip proper. The distance between the tip of the instrument used corresponds to the radius of the circle to be drawn.

 The functional part of the grip handle is called the upper grip part to ensure optimal ergonomics in relation to the pivoting of the assembly.

 The free suction cup is intended to be applied to an appropriate surface. It connects indirectly to the plate.

If necessary, it is brought into contact with the tip which can easily rotate around its axis in a well-defined location. This location is the subject of a conical recess provided to focus the tip towards the bottom.

 The location in question belongs to a cylindrical metal part housed in the middle of a suction cup (rubber cap) proper whose design is universally known.

 Said free suction cup is universal, usable with any compass.

 Of course, the shapes and dimensions of the elements of the kit and of the support used, as well as the materials which constitute them, are not limiting.

 Apart from the tip (metallic) and the suction cup (rubber cap), everything else can be made of plastic, especially the blocking means. These are represented by screws according to the invention but they

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 can be small blocking mechanisms.

 The instrument used can be a writing instrument (pen, mechanical pencil, etc.) or cutting (cutter blade, glass cutter, etc.).

 According to particular embodiments: - All the fixing forks can be removable with respect to the functional parts.

- the instrument receiving part can be tilted relative to the fixing fork.

Brief description of the drawings
The manner of carrying out the invention, as well as the advantages which result therefrom, will emerge clearly from the description of the embodiment which follows, with the support of the appended figures in which:
Figure 1 shows an overview of the kit, the elements of which are shown in perspective.

 FIG. 2 represents an exploded perspective view of the circular tracing (or cutting) device; mounting the kit elements around the plate.

 FIG. 3 represents a front view of the circular tracing (or cutting) device.

 FIG. 4 represents a cross section of the circular tracing (or cutting) device, according to the arrows A-A of FIG. 3.

 FIG. 5 represents a top view of a part of the circular tracing (or cutting) device; instrument holder side.

 FIG. 6 represents a cross section of the circular tracing (or cutting) device, according to the arrows B-B of FIG. 3

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Manière de réaliser l'invention En référence aux dessins illustrés, le kit (1) est com- posé de quatre éléments reliés à une plaque (6) pour former un dispositif (7) capable de réaliser des traçages (ou découpages) circulaires. Ces éléments sont : un porte-instrument (2), un porte-pointe (3), un manche de préhension (4) et une ventouse libre (5). Celle-ci est reliée indirectement à la plaque (6).

Manner of Carrying Out the Invention With reference to the illustrated drawings, the kit (1) is composed of four elements connected to a plate (6) to form a device (7) capable of performing circular tracings (or cutouts). These elements are: an instrument holder (2), a tip holder (3), a grip handle (4) and a free suction cup (5). This is connected indirectly to the plate (6).

 The instrument holder (2), which attaches to the end of the plate (6), width side (23), comprises an instrument receiving part (10) open on its face side, as well as a fork fixing (9) provided with a locking means (27).

This fork is mainly formed by two tongues (18) and (19) straight and parallel apart.

 The instrument receiving part (10) is provided with a locking means (20) making it possible to hold a writing instrument (8) in place against a vee (32) serving as stability for instruments of cylindrical shape.

 The tip holder (3) which can take any position along the plate (6), on the lower side (31), comprises a lower tip holder part (11) provided with a tip (12), and a fixing fork (16) comprising a locking means (28). This fork is mainly formed by two tongues (21) and (22) straight and parallel apart.

 In the form illustrated in Figure 4 the tip (12) is embedded in the lower tip holder part (11), but it can be removable according to another embodiment not shown.

 The grip handle (4) which allows easy pivoting of the assembly, can take any position along the plate (6) on the upper side (26). It includes an upper gripping part (13) as well as a

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 fixing (17) formed by two tongues (24) and (25) straight and parallel apart, and provided with a locking means (29) serving to immobilize the grip handle (4) relative to the plate (6) .

 The use of the free suction cup (5) is optional. In fact, it is generally used in cutting glass or else it is applied to surfaces to which it can adapt. It is composed of two organs mounted together; it is a suction cup (14) (rubber cap) proper, in the middle of which is housed a metal piece (15) cylindrical having a recess (30) of conical shape. This recess is advantageously provided to focus the point (12) towards the bottom, in order to make it converge at a single point of rotation and thus eliminate all linear displacements. In other words, the connection which exists between the free suction cup (5) and the tip (12) is spherical, it therefore allows only three rotations in space.

 The kit according to the invention is intended in particular for circular tracing (or cutting) of any size.

Claims (10)

1) universal kit (1) for circular tracing and cutting of any size, characterized in that it is composed of an instrument holder (2), a tip holder (3),

 a grip handle (4) and a free suction cup (5). / 2) Kit (1) according to claim 1 characterized in that the instrument holder (2), the tip holder (3), the grip handle (4) and the free suction cup (5) are connected to a support ( 6) to end up with a circular tracing (or cutting) device (7).  3) Kit (1) according to claim 1 characterized in that the instrument holder (2) consists, on the one hand, of an instrument receiving part (10) open on its face side and comprising a means of blocking (20), and secondly, a fixing fork (9) formed by two tongues (18) and (19) straight and parallel apart, said fixing fork comprises a locking means (27) for securing the instrument holder (2) to the plate (6).  4) Kit (1) according to claim 1 characterized in that the tip holder (3) comprises a lower tip holder part (11) provided with a metal tip (12), as well as a fixing fork (16 ) formed by two tongues (21) and (22) straight and parallel apart, and comprising a locking means (28).  5) Kit (1) according to claim 1 characterized in that the grip handle (4) has a high grip portion to facilitate rotation of the assembly, as well as a fixing fork (17) formed by two tongues (24) and (25) straight and parallel apart, and comprising a locking means (29). <Desc / Clms Page number 8>  6) Kit (1) according to claim 1 characterized in that the free suction cup (5) is composed of a suction cup (14) proper, in the middle of which is housed a metal piece (15) cylindrical having in its middle a recess (30) of conical shape.  7) Kit (1) according to claim 3 characterized in that the fixing fork (9) is inclined relative to the instrument receiving part (10).  8) Kit (1) according to claim 3 characterized in that the fixing fork (9) is removable relative to the instrument receiving part (10).  9) Kit (1) according to claim 4 characterized in that the fixing fork (16) is removable relative to the lower tip holder part (11).  10) Kit (1) according to claim 5 characterized in that the fixing fork (17) is removable relative to the upper gripping part (13).