SU925683A1 - Drawing device - Google Patents

Description

(5) DRAWING DEVICE

I

. The invention relates to office equipment and can be used, for example, on Kullman type machines.

A drawing device is known that contains a drawing head with vertical and horizontal graduated rulers and an auxiliary graduated ruler with a bracket fixed on a horizontal ruler in its middle part with a hinge, the axis of which is perpendicular to the plane of the horizontal and vertical rulers tlj.

A disadvantage of the known device is a considerable inconvenience. when using the device, associated with the waste of time and attention of the designer to setting the rotatable graduated ruler to its original position at risk after it was removed by rotating around the hinge to draw long horizontal lines.

The aim of the invention is to improve the usability of the device.

The purpose is ensured by the fact that a drawing device containing a drawing head with vertical and horizontal graduated rulers and an auxiliary graduated ruler with a bracket pivotally mounted on an axis fixed on a plate mounted on a horizontal ruler, an axis of the hinge connecting the bracket to a horizontal ruler It is located in its plane at an angle of AZ ° to the edges of the line, ki, and in the bracket there is a U-shaped groove covering the plate.

Fig. 1 shows a drawing device; in Fig. 2, a section A-A on

figure 1.

Claims (1)

The drawing device contains a swivel drawing head 1 with vertical and horizontal standard rulers 2 and 3 from Kullman, as well as a), an auxiliary vertical 3 92 ruler. The vertical and horizontal lines 2 and 3 have graduated scales on the working edges with a reference point from the side adjacent to the drawing head 1. The auxiliary line is hingedly attached to the middle of the horizontal line 3. The hinged connection of the lines 3 and A consists of a bracket 5 of the fixed plate 6 and axes 7. The bracket 5 and the plate 6 are made of sheet steel and have holes for attachment to the rulers 3 and. When this bracket 3 covers the three sides of the plate 6 in its plane. The bracket 5 is connected to the plate of NOY 6 axis 7 located in the flat bars of lines 2 and 3 at an angle S to their edges. To fasten the bracket on 5 and the plates 6 to the rulers 2 and 3, countersunk screws 8 and nuts 9 are used. The hinged joint is intended for prompt transfer of the auxiliary ruler D from the vertical position I to the horizontal position n and back. On the auxiliary ruler k, the scale 10 is graded, and on the horizontal ruler 3 there is a reverse scale 11 with a reference point at point 12, which also represents a scale pi 10. The combination of two mutually perpendicular rulers 2, 3 M 3 A forms the right and left two-coordinate measuring systems. The device is used when working on drawing machines of the Kulman type, using conventional operations: measuring distances, marking the drawing, drawing lines. Using the right and left two-coordinate measuring systems, they conduct markings from the base points, since the marking of two coordinates of any point is performed with one installation of the drawing head. In addition, with the help of pairs of lines 2,3 4 and 3, it is possible to carry out two mutually perpendicular with different orientation from one installation. To put long lines on the drawing, the auxiliary ruler is rotated around the axes 7 and from position I is shifted to position ll. Since the swivel of the rulers 3 and H has no protruding parts, in position (1, the ruler does not interfere with the pencil and hands of the performer. When marking the drawing with the proposed drawing device, the auxiliary ruler i, connected hingedly with the horizontal ruler 3, allows using the right and left two-coordinate systems draw two mutually perpendicular lines of different orientations from one installation, which increases convenience in work and increases productivity. Formula 1 and Drawing device containing black a durable head with: vertical and horizontal graduated rulers and a soft graduated ruler with a krnshteynu pivotally mounted on an axis fixed on a plate mounted on a horizontal ruler, the purpose of increasing usability, the hinge axis, connecting the bracket with a horizontal ruler, is located in it plane at an angle ft5 to the edges of the ruler, and in the bracket is made U-shaped groove, covering the plate. Sources of information taken into account in the examination 1. USSR certificate of authorship If 12808, cl. B 13 L 13/00, 1930 (prototype). / FIG. S 79 A-A $ 5