JPH0811479B2 - Straight straight line that allows you to draw parallel lines freely - Google Patents

Description

Description: [0001] [Industrial field of application] The present invention relates to a straight cross scale in which parallel lines can be freely drawn.

[0002] [Prior Art] A conventional parallel ruler is a combination of a rectangular ruler and a right-angled triangle ruler, or a combination of a ruler A having a recess and a ruler B having a protrusion. There are things such as ones, but each is a combination of triangular rulers, not a combination of straight scales. In other words, conventional parallel rulers cannot draw long parallel lines.

[Problems to be solved by the invention] Even if parallel lines can be drawn at equal intervals and accurately, it is not possible to draw parallel lines with a length such as a straight scale, and parallel lines are irregular. I couldn't even draw a line. This is precisely the point of the present invention, and it is an object of the present invention to provide a crossing straight scale which can easily and freely draw even parallel lines having irregular intervals.

[Means for Solving the Problems] The intersecting straight scale according to the present invention comprises a combination of a straight scale A and a straight scale B. The straight scale A is provided with wire drawing sides (2) and fitting recesses (1) on the left and right sides of the surface, whereas the straight scale B is provided with fitting projections (3) on the drawing side (5). It is provided, and a sliding protrusion (4) is provided on the back surface. For the sake of convenience, the scale is not shown in the drawing, but the scale is actually engraved on both sides of the line.

[Operation] If the present straight scale is to be used, the straight scale B stored in the straight scale A is taken out, and then the straight scale B is turned upside down. As shown in FIG. 1, the straight scale A is fixed perpendicularly to the paper surface, and the straight scale B is horizontal. Then, the fitting concave portion (1) and the sliding projection portion (4) of the straight scale B are fitted, and the fitting place may be adjusted by the length of drawing parallel lines. After fitting, parallel lines may be drawn according to the scale marked on the drawing side of the straight scale A. Anyone can easily draw parallel lines simply by moving the straight scale B up and down, and the interval can be freely manipulated. The straight scale when not in use is in the state shown in Fig. 3, and it can be used as it is. If necessary, take out the straight scale B that has been stored and It can also be used as a straight scale. Since the sliding projection (4) is set on the back surface of the straight scale B and the drawing side (5) is in a floating state, the drawing does not smear the ink and stain the paper surface. .

Example 1 Example 1 As shown in FIG. 5, FIG. 6, and FIG. 7, drawn sides (2 ^a ) provided with slopes on the left and right sides of the straight scale A, and on the surface of the straight scale B Part ⁽³ a), and on the surface thereof A parallel line can be drawn by providing ^a part ( ^4a ) and combining both. In this method, since the straight scale A is to be accommodated in the straight scale B, the straight scale B is slightly larger. In addition, on the back Since the portion (4 ^a ) and the surface drawing side (5 ^a ) are stepped, it is necessary to slightly project the drawing side portion like an eaves.

Example 2 Further, as shown in FIGS. 8 and 9, a convex portion (1 ^a ) is provided on the front surface of the straight scale A, and one end of the rear surface of the straight scale is provided. If the mold fitting portion (4 ^b ) is provided and both are fitted, and then the straight scale B is moved in accordance with the scale of the straight scale A, parallel lines can be drawn as desired. In this case, the straight scale A when not in use needs to have a hook-shaped surface of the straight scale B as shown in FIG. However, this method uses only the tip on the back of the straight scale B. Since the mold fitting portion (4 ^b ) is provided, there is a drawback that the length of the straight scale B cannot be adjusted.

[0008] [Effect of the invention] As described above, when the straight scale of the present invention is used, it is possible to draw a long parallel line unlike the parallel ruler using a triangle ruler, and the interval is also freely adjustable. You can draw a line by operating. The surface of the straight scale A is composed of three planes because the fitting recesses (1) are provided on the left and right. For this reason, the surface has a grid scale,
Alternatively, if you engrave a scale such as one-third of a meter or one-fifth of a meter, you can get the effect of two birds with one stone.

[Brief description of drawings]

[FIG. 1] A plan view showing a use state of the present invention [FIG. 2] A front view showing a use state of the present invention [FIG. 3] A plan view when the present invention is not used [FIG. 4] When the present invention is not used Front view of [FIG. 5] Use plan view showing Embodiment 1 [FIG. 6] Use plan view showing Embodiment 1 [FIG. 7] Right side view of Embodiment 1 when not in use [FIG. 8] Embodiment 2 Front view of use [Fig. 9] Right side view of the second embodiment when not in use [Explanation of symbols] A is a straight scale B is a straight scale 1 is a fitting concave portion 1 ^a is a convex portion 2 is a drawn side 2 ^a is a drawn side 3 is a fitting convex portion 3 ^a is a concave portion 3 ^b is a hook-shaped fitting portion 4 is a sliding protrusion portion 4 ^a Part ^4b is Mold fitting part 5 is a drawing side 5 ^a is a drawing side

Claims (1)

[Claims] [Claim 1] A fitting concave portion (1) and a drawing side (2) are provided on the surface of the straight scale A, and a fitting convex portion (3) and a drawing side (5) are provided on the surface of the straight scale B. At the same time, a sliding projection (4) is provided on the back surface of the crosswise straight line so that parallel lines can be drawn freely.