JPH0719837Y2 - Patchwork ruler - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ruler used for patchwork work.

[0002]

2. Description of the Related Art Conventionally, it has been difficult to accurately draw an ellipse in patchwork. The main reason for this was that there was no dedicated ruler for drawing an ellipse.

[0003]

Therefore, the present invention provides a dedicated ruler capable of accurately drawing an ellipse in a patchwork, which allows a star-shaped pattern cloth to be easily and securely formed in the ellipse. The purpose is to be able to produce.

[0004]

According to the present invention, a ruler body is provided with an elliptical portion having a diameter-to-length ratio of 3 in the horizontal direction to 2 in the vertical direction. The elliptical portion includes a through hole portion and a non-through hole portion. Providing an appropriate number of each with the same width interval, a radial reinforcing plate is provided from the central elliptical non-perforated part to all perforated parts and non-perforated parts, and the center of the central non-perforated part is Peripheral point holes are provided at equal intervals around the outer periphery of the outermost through-hole portion.

[0005]

[Function] Prepare a sheet that is slightly larger than the ruler.

First, a pencil point is inserted into all of the center point hole at the center of the elliptical portion and the peripheral point hole at the outer periphery to make a mark. In addition, at this time, a pencil is put in the outermost through-hole portion and an elliptical shape is drawn along the outer peripheral edge. At this time, the base end portion of the reinforcing plate is jumped over and drawn. (See Figure 2)

After that, an ellipse of a desired size is drawn, but even for a portion that cannot be drawn by jumping over, the ruler body is rotated 180 degrees to draw an ellipse by connecting lines. (See Figure 3)

Next, the points where the center line and the elliptical portion intersect are marked (the points AA 'to PP' are marked on the drawing) (see FIG. 4).

Further, when drawing a Mariner's compass pattern, when drawing from a point A on the outer circumference, a line is drawn to connect P'and B'adjacent to A'on the inner circumference. Similarly, while shifting the ruler bodies one by one, a line is drawn from all the marks of the outer peripheral points to the marks of the inner peripheral points to connect them. If you want to make the width wider, move the inner circumference point outward by the width of the width and draw a line from the mark of the outer circumference point to connect.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference numeral 1 is a ruler body having a rectangular shape as a whole, and an elliptical portion 2 having a mode described below is formed on the ruler body. In the shape of the elliptical portion 2, the ratio of the diameter and the length is 2 to 3 in the vertical direction.

Denoted by 3 ... are through-holes of the elliptical portion 2 formed in the ruler 1, and these through-holes are provided in appropriate numbers at intervals of the same width as the non-permeable holes 4.

Reference numeral 5 denotes an elliptical non-permeable hole provided in the center of the ruler body 1.

Denoted at 6 ... Reinforcing plates radially formed from the central elliptical non-perforating portion 5 to the through-hole portions 3 ... And the non-perforating portion 4 ... In the radial direction of the reinforcing plate. Is formed in an oblique direction deviating from the vertical and horizontal centerlines of the rectangular ruler 1 and has a divergent width from the central non-permeable portion 5 to the outside.

Reference numeral 7 denotes a center point hole provided at the center of the central elliptical non-perforated hole portion 5, and 8 ... Perimeters provided at 16 equally divided positions on the outer periphery of the outermost perforated hole portion 3. It is a hole.

[0015]

EFFECTS OF THE INVENTION By using the template ruler of the present invention, it is possible to accurately produce a pattern cloth in which the star shape of the Mariners compass shines brightly in the elliptical shape in the patchwork.

Since the ruler is easy to use, it is possible to work quickly and smoothly.

[Brief description of drawings]

FIG. 1 is an overall front view

FIG. 2 is a state diagram on paper showing the procedure of work.

FIG. 3 is a state diagram on a paper showing the work procedure.

FIG. 4 is a state diagram on paper showing the procedure of work.

FIG. 5 is a state diagram on a paper showing the work procedure.

[Figure 6] Front view of the completed pattern

[Explanation of symbols]

 1 Ruler 3 Elliptical through hole part 4 Elliptical non-permeable hole part 5 Central elliptical non-permeable hole part 7 Core point hole 8 ... Peripheral point hole

Claims (1)

[Scope of utility model registration request] 1. A ruler has a diameter-length ratio of 3 in the horizontal direction and 2 in the vertical direction.
The elliptical portion is formed by providing an appropriate number of through holes and non-perforating holes with the same width, and the central elliptical non-perforating hole and all through holes and non-perforating holes are provided. A reinforcing plate is provided radially over the through hole portion, and a center point hole is provided at the center of the central non-through hole portion, and peripheral point holes are provided at equal intervals around the outer periphery of the outermost through hole portion. A ruler for patchwork.