Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Four-line three-grid drawing device

A technology of drawing lines and fixing bars, which is applied in the field of teaching aids, can solve problems such as difficulty in grasping, time-consuming and labor-intensive drawing of four lines and three grids, and achieve the effect of improving drawing efficiency

Inactive Publication Date: 2017-09-01
邵长年
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that it is time-consuming and labor-intensive to draw four lines and three grids, and it is not easy to grasp whether the straight lines are inclined and whether the spacing is equal is only a subjective judgment, so the following technical solution is proposed

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Four-line three-grid drawing device
  • Four-line three-grid drawing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] Attached below Figure 1-2 An embodiment of the present invention is described.

[0012] Four-line three-grid liner, (such as figure 1 As shown) has two vertical, parallel and a certain distance between the fixed bar 1, the fixed bar 1 is used as a support body, used to support and install the horizontal ruler 2 used to draw horizontal parallel lines, generally four-line three-grid straight line adopts meter Therefore, preferably, the distance between the two fixing bars 1 is 1m. Correspondingly, four levels 2 with a drawn length of 1 m are arranged between the fixed bars 1, and the two ends of the above-mentioned level bars 2 are vertically fixed to the inner side of the fixed bars 1 by fasteners respectively, and the four levels The spacing between 2 is equal and parallel to each other. Further, when drawing with chalk for convenience, this drawing tool can be close to the blackboard surface. And this drawing tool is compressed on the blackboard plane, the fixed ba...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A four-line three-grid line drawing device is provided, which has two vertical and parallel fixed bars with a certain distance apart, four levels are arranged between the two fixed bars, and the two ends of the level are respectively fixed vertically on the inner side of the fixed bar, and the distance between the four levels is equal and parallel to each other. The rear end surface of the level is flush with the rear end surface of the fixed bar. A hand-held rod is arranged under the fixed bar. Above the plane enclosed by the fixed bar and the level bar. The invention can draw four lines and three grids at one time without moving, and greatly improves the drawing efficiency.

Description

technical field [0001] The invention belongs to the technical field of teaching tools, and in particular relates to a four-line three-grid line drawing device. Background technique [0002] When teaching basic English, it is often necessary to draw four lines and three grids. When drawing, the teacher uses an ordinary ruler to draw four equidistant parallel lines by visual inspection. After the first straight line is drawn, the ruler needs to be moved downwards to draw the second straight line, and it must be ensured that the hand-held straight edge does not tilt left and right so that the second straight line is parallel to the first straight line. Immediately after drawing the third straight line, continue to move the ruler down. This time not only to ensure that the ruler does not tilt left and right, but also to judge the position of the third parallel line subjectively by visual inspection, so that the first, second and third parallel lines Equal spacing between lines ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B43L13/02
CPCB43L13/02
Inventor 邵长年
Owner 邵长年
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com