SU1142308A1 - Drawing pen - Google Patents

Abstract

1. DRAWING PEN, having one opposite one another with the formation of a channel for supplying the dye to the working surface of the plate with writing edges located one from another at a variable distance along their length, characterized in that, in order to increase the usability and extend the range the thickness of the lines to be drawn, the edges are made convex and arranged so that the minimum distance between them is in the middle section along their length. 2. Drawing pen according to claim 1, characterized in that the edge profile is a broken line. 4 1C SAE O 00

Description

The invention relates to tools for applying a colorant to a work surface, in particular for drawing lines.

A drawing pen is known which is located opposite one another with the formation of a channel for supplying a dye to a working surface of a plate with writing edges spaced one from another at a distance of 1 that is variable in their length.

The well-known drawing pen is inconvenient to use and it is impossible to draw more than two lines of different thickness without changeover.

The purpose of the invention is to increase the convenience in use and expand the range of thickness of the lines drawn.

This goal is achieved by the fact that in the drawing pen, which are located opposite one another with the formation of a channel for supplying a dye to the working surface of a plate with writing edges that are spaced one from another at a distance varying along their length, the edges are made convex and minimal. the distance between them is in the middle section along their length.

Moreover, the edge profile is a broken line.

FIG. 1 shows a drawing pen, a general view; in fig. 2, 3, and 4 are embodiments of a drawing pen; in fig. 5a and b are variants of section A-A in FIG. 3; in fig. 6 and 7 - drawing pen, located at different angles of inclination to the working surface, side view; in fig. 8 and 9 are sections BB and B-B in FIG. 6 and 7 respectively.

The drawing pen contains plates 1 and 2 located one opposite to the other on the split parts 3 and 4 formed between the surfaces of plates 1 and 2 and channel 5 for supplying the dye to the working surface convex edges 6 and 7 of plates 1 and 2 for contacting with writing the working surface and the split 8 between the split parts 3 and 4 for feeding the channel 5 with the dye during operation.

Each of the plates 1 and 2 has two surfaces: “the outer 9 and the surface 10 facing the opposite plate. In this case, in order for the edges 6 and 7 to be convex, on each of the plates 1 and 2, part of the surfaces 9 and 10 have the shape of a portion of the side surface of the paraboloid of rotation. Moreover, the surface 9 of both plates I and 2 is a section of the same paraboloid of rotation, the plane of arrangement of the axis of rotation of which is parallel to the split parts or is also the plane of the axis of the axis of split parts 3 and 4. At the same time, the surface 10 in both plates, the lateral surface area of the self-supporting paraboloids of rotation, the axes of which intersect, since they are inclined towards one another.

The surfaces 10 of the plates 1 and 2 are in contact with each other so that the channel 5 is located along the length of the convex edges 6 and 7.

An embodiment provides for the shape of the surface 10 on each .. plates 1 and 2 in the form of a section of a conical surface (Fig. 5a) or in the form of a section of the side surface of the pyramid (Fig. 56).

The option of forming the profile of a convex edge 6 and 7, which is a broken line, provides for such an implementation of the surface 9 as the plate

1 and plate 2, in which it consists of a successive row of sections of conical surfaces having a different angle of cone. In this case, the conical surface with the maximum angle of the cone is located on the middle portion of the length of the convex edges 6 and 7.

The execution of the drawing pen provides for such a mutual location of the section with a minimum distance between the convex edges 6 and 7 and the split parts 3 and 4, which ensures, when drawing a line of minimum thickness, the position of the split parts 3 and 4 at an angle to the working surface in the range 15-60 The choice of the optimal angle is determined by the thickness of the graphic lines required for writing textual documentation and the user-friendly tool position during operation.

Work with drawing pen as follows.

While ensuring continuous supply of dye (ink, ink) to the split 8, the dye is in channel 5.

Picking up the slope of the drawing pen corresponding to the required line thickness, draws a line. A change in pen tilt leads to a change in line thickness. The convex edges 6 and 7, when in contact with the working surface, in the variant with a profile in the form of a broken line, have a contact line whose length is equal to the length of the generatrix of the conical surface, which ensures the corresponding thickness of the drawn line.

The use of the invention allows to increase productivity in the drawing and graphic works.

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Claims (2)

1. DRAWING PEN, having one opposite each other with the formation of a channel for supplying dye to the working surface of the plate with writing edges located one from the other at a variable distance along their length, characterized in that, in order to improve ease of use and expand the range of thicknesses drawn lines, the edges are convex and arranged so that the minimum distance between them is in the middle section along their length. 2. Drawing pen in π. 1, characterized in that the edge profile is a broken line. Fig!