CZ20021365A3 - Multicolored writing and drawing means and process for producing lead for such means - Google Patents

Abstract

A multicolour writing and drawing instrument with pastel core (1) with longitudinal colour segments (2, 3, 4) running parallel to the core (1) axis, comprising by that at least one of the colour segments (2, 3, 4) is arranged inside the core (1) and gets out at the tip (1 '') area of the core. Criss-cross structure of the regularly alternating colour segments (2, 3, 4) is advantageous. The manufacturing method of the core (1) by pressing the block (5) through the drawing die (10) and the device for performing of this method consisting of a pressing chamber (6) with piston (7), entrance part (9) and drawing die (10) are also object of the invention.

Description

Multicolored writing and drawing instruments [krftv

Technical field

The invention relates to a multicolored writing and drawing means, to a method of making graphite for such means, and to an apparatus for carrying out the method.

BACKGROUND OF THE INVENTION

Of the multicolored writing and drawing means, ballpoint pens with retractable colored writing inserts, respectively. mechanical pencils with retractable colored leads. Also known are multicolored markers with two or more spikes into which ink is supplied from separate cartridges, for example according to AO 262 982. Further, a triple core pencil according to AO 193 312 is known for pre-drawing double lines on wood in carpentry operations.

In the field of conventional pencil products, provided with a single multicolored lead, a lead composed of longitudinal color regions extending substantially parallel to the lead axis is known, according to German patent application DE 30 06 684 A1. The graphite may have different cross-sections, and depending on the graphite cross-section, the cross-sectional shape of the longitudinal colored areas also differs. However, all longitudinal regions extend into the surface of the graphite, which is due to the hitherto known method for producing the multicolored graphite, which is.

The disadvantage of this known solution is that when writing or drawing, in which the graphite is in the same inclined position, a single-color, at most two-color line is produced. In order to achieve the effect of changing colors, the graphite must be rotated around an axis, which is annoying and disadvantageous in normal writing and drawing.

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It is an object of the present invention to provide a multicolored writing and drawing means which creates a multicolored line without the need for constant rotation about an axis.

SUMMARY OF THE INVENTION

This object is achieved by providing a multicolored writing and drawing means with a pastel lead which in a known manner exhibits colored longitudinal regions extending substantially parallel to the lead line. The principle of the invention is that at least one of the colored areas is arranged inside the lead so that it does not extend into the side surface of the lead coat but protrudes in the tip area.

The advantage of this embodiment consists in the colored areas arranged inside the lead protrude to the surface when the lead is tipped at the tip of the lead, and when writing together with the other colored surface areas they form a multicolored line without the need to rotate about the writing axis during writing or drawing. The color of the line changes even when the tilt angle of the writing or drawing aid is slightly changed.

Advantageously, the colored areas arranged within the lead are more, the areas of different color alternate regularly, and the line is then composed of multiple writing tracks formed by several colored areas simultaneously.

In a preferred embodiment, for example, the colored regions of a rectangular cross-section are arranged in a regular grid structure in the most commonly used rigid cylindrical shape. Color regions consist of alternating rows of one color, and in section, the quadrilaterals of identical color regions touch each other with their vertices. It is also preferred that the color regions are yellow, red and blue. In the region of the tip of the graphite tip, regular alternating fields of the individual color areas arise so that the line is formed in each position by several writing tracks composed of different colors or combinations thereof resulting from the overlap of tracks, and the width of the individual writing tracks also varies. It is so individual that it corresponds to the only possible position, inclination and pressure on the writing means, and thus it is possible to write, for example, a multicolored writing and drawing means according to the invention.

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-3 a security signature whose counterfeiting is very difficult. The combination of yellow, red and blue makes it possible to create a very wide range of color spectrum variations when overlapping writing tracks. Thus, the multicolored writing and drawing means of the invention can also be used to draw color images using a single drawing means at different inclination positions to achieve the desired resultant color effect.

It is also advantageous if the multicolored writing and drawing means according to the invention, for example in the form of a wooden crayon, a plastic crayon or a mechanical pencil with a retractable rigid, is provided with a surface treatment consisting of irregular color patterns, lines, or. spots, so-called "marbling". This coating, together with the visible pointed tip of the multicolored lead formed by alternating color areas, creates a unique visual combination distinguishing at first glance the multicolored writing and drawing means of the invention from conventional writing and drawing means, each piece having an original coating.

The invention also relates to a process for producing graphite into a multicolored writing and drawing means. The essence of the method according to the invention consists in that the colored regions of pastel graphite in a semi-solid state are assembled in the shape of a spatial body of arbitrary cross-section in a regular structure so that at least one of the colored regions is arranged inside the body and does not extend into its lateral surface. Subsequently, the body is forced through a die with an opening whose cross section is smaller and / or its shape is different from that of the body. For the production of the most commonly used graphite graphite, it is advantageous if the colored regions are formed by cuboid segments which stack on top of one another and side by side in a regular structure to form alternating rows of blocks of one color. The formed body, also in the form of a cuboid, is forced in the direction away from the base of the cuboid through a die with a circular cross-section opening whose area is smaller than the cross-sectional area of the body.

When pushed through the die, the high specific pressure causes the non-detachable bonding (compression) of the individual graphite-forming regions together, while maintaining the structure in which the color regions have been folded into the parent body. The graphite produced by the method described is further processed in a known manner by cold or hot preparation to the final form in which it is embedded in a writing or drawing means.

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Finally, the present invention relates to an apparatus for carrying out a process for producing roller graphite into a multicolored writing and drawing means. Its essence consists in that it consists of a cuboid-shaped pressing chamber for receiving a body consisting of folded colored areas. The pressing chamber is provided with a rectangular cross-section piston on one side and a leading part and a replaceable die with a circular cross-section opening on the other side.

The advantages of the multicolored writing and drawing means according to the invention are that it forms a multicolored line composed of several differently colored writing tracks without having to rotate the writing means about its axis when writing or drawing. Changing the colors in the writing color tracks, changing the width of the tracks and their overlapping, is a mere change in the tilt of the writing and drawing means, and also in the simple underwriting of lead. The method of making graphite and the apparatus for carrying out the method makes it possible to produce the multicolored writing and drawing means according to the invention on conventional pencil-making machines in existing production lines without the need for further investment.

The multicolored writing and drawing means according to the invention is suitable for children's drawing, for visual artists for drawing color pictures and sketching, and finally for writing, where it can also be used as a means of creating a counterfeit security signature.

BRIEF DESCRIPTION OF THE DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of the rigid multicolored writing and drawing means at position A-A; FIG. 2 is an axonometric view of the graphite in the final state after being pointed; Fig. 4 is a longitudinal cross-sectional view of a press chamber with a body, a piston, a lead-in section and a die; Fig. 5 is an axonometric view of a press chamber; peak area.

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EXAMPLES OF THE INVENTION

Fig. 1-6 shows an exemplary embodiment of a multicolored writing and drawing means such as a wooden crayon 13 with a core formed by a pastel multicolored cylindrical pencil 1.

In addition to this example, the graphite may also be used as a separate writing and drawing means, or may be a cartridge of a mechanical slide-out pencil, or may be inserted into any other known writing or drawing means housing. The shape of the lead 1 is not limited to the most common cylindrical design, but can be related to any cross-section.

The multicolored writing and drawing means according to the invention in the illustrated embodiment consists of a wooden crayon 13 with a wood jacket and a core formed by a cylindrical pastel solid 1 of a mixture of kaolin, binders and pigments. The lead 1 is composed of longitudinal color areas 2, 3, 4 extending parallel to the lead axis 1. The first color areas 2 are yellow, the second color areas 3 are red, and the third color areas 4 are blue. The color areas 2, 3, 4 have a rhombic or square cross-section, and are arranged in the cylindrical graphite 1 in a regular grid structure, alternating rows of one color, so that they cut in contact with the vertices of one color. The marginal color regions also form the surface of the graphite side coat 1 '. The inner color regions 2, 3, 4 lie within the graphite sheet 1, do not extend into the surface of the graphite surface 1 but extend to the surface in the region of its pointed tip 1.

The shell of the wooden crayon 13 is provided with a surface treatment consisting of irregular color patterns, lines and spots. This treatment, referred to as "marbling", is the result of dipping wooden crayons 13 in a dipping base and other color baths.

The graphite 1 is manufactured in the apparatus shown in Figs. 4 and 5 and consisting of a cuboid metal pressing chamber 6, which is provided with a rectangular cross-section piston 7 on the one hand and a leading part 9 leading to the replaceable die 10 with bore JT on the other. of circular carbide, corundum or similar material. The die 10 is circular in shape, and is fixed to the mouth of the leading portion 9 by a union nut 12. The replaceable die 10 has a bore diameter JT of, for example, 3.8 mm, 5.6 mm and 6 mm, i.e. the dimensions of commonly used pastel graphite.

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-62 -6The method of making graphite 1 is such that, by first extruding in a square die, the colored areas 2, 3, 4 of pastel graphite in a semi-solid state in the form of cuboids of 3x3 cm square cross section are produced. These block segments are then stacked on top of one another and side by side in the number of 7 x 7 into a regular structure of alternating oblique rows of blocks of one color according to Fig. 3, so as to form a block-shaped body 5 of 21 x 21 cm. The body 5 inserted into the compression chamber 6 is pushed in the direction away from the base of the block by the action of the piston 7 through the die 10 and 10, respectively. its opening 11 of circular cross-section. In this case, the body 5, composed of the colored regions 2, 3, 4 in the semi-solid state, gradually adapts to the shape of the leading-in part 9, which is designed so as not to distort the inner grating structure of the body 5 at the correct specific pressure and speed. The lead graphite blank 1 extending from the aperture 11 has retained the same grid structure of the colored areas 2, 3, 4 as the original blank formed by the body 5 of the square cross-section.

The slight deformation of the cross-sectional area of the edge colored areas 2, 3, 3 extending on the surface of the graphite is not a defect, but the grid structure must not be damaged. It is also not a problem if the cross-section of the colored areas 2, 3, 4 changes, for example, from the original square cross-section to a slightly rhombic cross-section.

After the graphite 1 exits the aperture 11, it is placed on a mat of about 80 cm in length, then cut to a length of 135 mm and finished with a cold or hot preparation, including drying and soaking in a mixture of waxes and paraffins to achieve the desired smoothness and underwritability. Subsequently, the graphite 13 is inserted in a known manner into the wooden crayon 13, the cladding of the crayon 13 and the tip of the tip 1 are treated.

Industrial applicability

The multicolored writing and drawing means according to the invention can be used for writing and drawing lines formed by a multicolored writing line, in particular as a color crayon for children, for visual artists, or in the art. as a writing tool for writing secure signatures, etc.

Claims (7)

PATENT CLAIMS Multicolored pastel pencil writing and drawing means having longitudinally colored areas extending substantially parallel to the graphite axis, characterized in that at least one of the colored areas (2, 3, 4) is arranged inside the graphite (1) such that it does not extend into the surface of its side skirt (1 '), but protrudes in the region of its tip (1). Multicolour writing and drawing means according to claim 1, characterized in that the colored regions (2, 3, 4) of the rectangular cross-section are arranged in a cylindrical graphite (1) in a regular structure, preferably in alternating rows of one color so that in cross section, quadrilaterals of one color touch each other with their vertices. Multicolour writing and drawing means according to claim 1 or 2, characterized in that at least one first color area (2) is yellow, at least one second color area (3) is red, and at least one third color area (4) is blue . Multicolour writing and drawing means according to at least one of Claims 1 to 3, characterized in that it is provided with a surface treatment consisting of irregular color patterns, lines or lines. spots. Method for producing graphite into a multicolored writing and drawing means according to claim 1, characterized in that the colored regions (2, 3, 4) of pastel graphite in a semi-solid state are folded in the shape of a spatial body (5) of arbitrary cross-section in regular structure. that at least one of the colored areas (2, 3, 4) is arranged inside the body (5) and does not extend into the surface of the side jacket (1 '), and subsequently the body (5) is forced through the die (10) with the opening (11) the cross section of which has a smaller area and / or other shape than the cross section of the body (5). -8 • 9 «99 · 99 · 9 · 9 · 9 9 9 9 9 «999 9 · 99999 9 999 9 «9 9 9 · · 9 9 ♦ 6. A method according to claim 5, characterized in that the colored regions (2, 3, 4) formed by cuboid segments are stacked on top of one another and side by side in a regular structure so as to form alternating rows of blocks of one color. and the formed body (5), also in the form of a cuboid, is pushed in the direction from the base of the cuboid through a die (10) with an opening (11) of circular cross-section whose area is smaller than the cross-sectional area of the body (5). Device for carrying out the method according to claim 6, characterized in that it consists of a cuboid-shaped pressing chamber (6) for receiving a body (5) provided on one side with a rectangular cross-section piston (7) and on the other side 9) and a replaceable die (10) with a circular opening (11).