JPS57182101A - Method of equally dividing specified set angle and angle divider therefor - Google Patents

Method of equally dividing specified set angle and angle divider therefor

Info

Publication number
JPS57182101A
JPS57182101A JP6752581A JP6752581A JPS57182101A JP S57182101 A JPS57182101 A JP S57182101A JP 6752581 A JP6752581 A JP 6752581A JP 6752581 A JP6752581 A JP 6752581A JP S57182101 A JPS57182101 A JP S57182101A
Authority
JP
Japan
Prior art keywords
point
angle
line
division
angle alpha
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP6752581A
Other languages
Japanese (ja)
Inventor
Ayao Tanaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP6752581A priority Critical patent/JPS57182101A/en
Publication of JPS57182101A publication Critical patent/JPS57182101A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
    • B43L13/001—Mathematical drawing instruments
    • B43L13/002—Angle intersecting devices

Landscapes

  • A Measuring Device Byusing Mechanical Method (AREA)
  • Length-Measuring Instruments Using Mechanical Means (AREA)

Abstract

PURPOSE:To enable equal division handily and at a high accuracy by using a group of radial division lines with a desired angle as reference according to the required number of division when a specified set angle is divided equally as desired. CONSTITUTION:When a given angle alpha is equally divided into an arbitrary number (n), radial division lines RL1-RLn with a desired angle are taken according to the required number n of division so that they converges at a point P1 on a base line BL. Then, a second point P2 is provided at a position separated from the point P1 on the base line. A set line EL is taken at the set angle alpha to be divided with respect to the base line from the point P2. An intersection point Q1 is determined between the set line and the outermost line RL1 of the radial division line and an arc CA is taken with the line P2Q1 as radius centered on the point P2. If intersections Q1-Qn formed on the arc with the radial division lines RL are connected to the point P2, an equally divided angle alpha/n is obtained equivalent to equal division of the angle alpha by n.
JP6752581A 1981-05-01 1981-05-01 Method of equally dividing specified set angle and angle divider therefor Pending JPS57182101A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6752581A JPS57182101A (en) 1981-05-01 1981-05-01 Method of equally dividing specified set angle and angle divider therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6752581A JPS57182101A (en) 1981-05-01 1981-05-01 Method of equally dividing specified set angle and angle divider therefor

Publications (1)

Publication Number Publication Date
JPS57182101A true JPS57182101A (en) 1982-11-09

Family

ID=13347471

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6752581A Pending JPS57182101A (en) 1981-05-01 1981-05-01 Method of equally dividing specified set angle and angle divider therefor

Country Status (1)

Country Link
JP (1) JPS57182101A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112060813A (en) * 2020-09-17 2020-12-11 淄博职业学院 Angle divider capable of dividing any angle in multiple equal ways
US10994569B2 (en) 2018-02-06 2021-05-04 Ronald Harvey Rosenfield Angle trisector, as validated to perform accurately over a wide range of device settings by a novel geometric forming process; also capable of portraying finite lengths that only could be approximated by means of otherwise applying a compass and straightedge to a given length of unity; that furthermore functions as a level whose inherent geometry could be adapted for many other uses such as being incorporated into the design of a hydraulic car lift

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10994569B2 (en) 2018-02-06 2021-05-04 Ronald Harvey Rosenfield Angle trisector, as validated to perform accurately over a wide range of device settings by a novel geometric forming process; also capable of portraying finite lengths that only could be approximated by means of otherwise applying a compass and straightedge to a given length of unity; that furthermore functions as a level whose inherent geometry could be adapted for many other uses such as being incorporated into the design of a hydraulic car lift
CN112060813A (en) * 2020-09-17 2020-12-11 淄博职业学院 Angle divider capable of dividing any angle in multiple equal ways

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