GB717327A - Improvements in drawing instruments - Google Patents
Improvements in drawing instrumentsInfo
- Publication number
- GB717327A GB717327A GB1912451A GB1912451A GB717327A GB 717327 A GB717327 A GB 717327A GB 1912451 A GB1912451 A GB 1912451A GB 1912451 A GB1912451 A GB 1912451A GB 717327 A GB717327 A GB 717327A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arm
- arms
- clamped
- holder
- scale
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B3/00—Measuring instruments characterised by the use of mechanical techniques
- G01B3/56—Gauges for measuring angles or tapers, e.g. conical calipers
- G01B3/563—Protractors
-
- 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
- B43L7/00—Straightedges
- B43L7/10—Plural straightedges relatively movable
- B43L7/12—Square and pivoted straightedges
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Drawing Aids And Blackboards (AREA)
Abstract
717,327. Drawing instruments. GEORGAKIS, V. Nov. 14, 1952 [Aug. 14, 1951], No. 19124/51. Classes 97(2) and 97(3) A drawing instrument consists of a pair of straight arms 10, 11 pivoted together at one end, means for indicating the angle between the arms comprising a degree scale inscribed about a circular pivot 15 forming part of arm 11, the arm 10 being inscribed with an arrow 14 for indicating on the scale the angle between the arms, and a holder 22 for a marking device slidably mounted on arm 11. the holder comprising spring clips 18, 19 such that the marking device may be disposed either parallel to arm 11 or at right angles to the plane of the arms. As shown, arms 10, 11 each have a scale of length and are clamped by a nut 16. The carriage 22 slides along a slot in arm 11 and may be clamped by a knob 26. Removable compass points 30 are fixed to the ends of arms 10. 11. To use as a square or bevel protractor, nut 16 is slacked off and tightened after the arms have been set at the required angle by means of the scale and pointer 14. A lip formed at one edge of arm 10 enables the arm to be set against the work. Lines may then be drawn by a pencil clamped in holder 18 by moving carriage 22 along the arm. By clamping carriage 22 and slackening nut. 16, arm 11 may be swung to draw--circular arcs. The compass points 30 are placed in position to use the instrument as dividers. To use it as a compass, a compass point :is. positioned on arm 10, and a pencil is placed in holder 19 on carriage 22, which is clamped in a convenient position. A pendulum level 31 is mounted in a recess in arm 10 between sheets of " Perspex " (Registered Trade Mark.)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1912451A GB717327A (en) | 1951-08-14 | 1951-08-14 | Improvements in drawing instruments |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1912451A GB717327A (en) | 1951-08-14 | 1951-08-14 | Improvements in drawing instruments |
Publications (1)
Publication Number | Publication Date |
---|---|
GB717327A true GB717327A (en) | 1954-10-27 |
Family
ID=10124152
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1912451A Expired GB717327A (en) | 1951-08-14 | 1951-08-14 | Improvements in drawing instruments |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB717327A (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3942252A (en) * | 1974-08-26 | 1976-03-09 | Roach Daniel F | Rule protractor |
US4060902A (en) * | 1976-05-07 | 1977-12-06 | Keller Gerbert O | Multi-purpose tool |
FR2544483A1 (en) * | 1983-04-16 | 1984-10-19 | Dearman Timothy | RAPPORTEUR FOR PIPE POSTER |
GB2155407A (en) * | 1984-02-22 | 1985-09-25 | Djordje Rabatic | Geometric device |
GB2173307A (en) * | 1985-04-02 | 1986-10-08 | William Pedley | Combination hand tool |
GB2272302A (en) * | 1992-11-05 | 1994-05-11 | Chow Tien Jin | Combined ruler and protractor drawing instrument |
GB2277801A (en) * | 1993-05-06 | 1994-11-09 | Roger Edward Sumner | A device to establish a true perpendicular |
GB2292220A (en) * | 1994-08-11 | 1996-02-14 | Dennis George Yeo | Levelling aid |
WO1997012767A1 (en) * | 1995-10-02 | 1997-04-10 | Folivi Felix | Combined protractor, compass, ruler and set square device |
GB2379514A (en) * | 2001-09-11 | 2003-03-12 | Albert Frank Ellam | An adjustable squaring tool |
CN110132089A (en) * | 2019-05-17 | 2019-08-16 | 郑州铁路职业技术学院 | A kind of planar design multifunction measuring set |
CN112262047A (en) * | 2018-04-27 | 2021-01-22 | 米沃奇电动工具公司 | Frame angle square |
-
1951
- 1951-08-14 GB GB1912451A patent/GB717327A/en not_active Expired
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3942252A (en) * | 1974-08-26 | 1976-03-09 | Roach Daniel F | Rule protractor |
US4060902A (en) * | 1976-05-07 | 1977-12-06 | Keller Gerbert O | Multi-purpose tool |
FR2544483A1 (en) * | 1983-04-16 | 1984-10-19 | Dearman Timothy | RAPPORTEUR FOR PIPE POSTER |
GB2139365A (en) * | 1983-04-16 | 1984-11-07 | Timothy Charles Dearman | Pipefitter's protractor |
GB2155407A (en) * | 1984-02-22 | 1985-09-25 | Djordje Rabatic | Geometric device |
GB2173307A (en) * | 1985-04-02 | 1986-10-08 | William Pedley | Combination hand tool |
GB2272302A (en) * | 1992-11-05 | 1994-05-11 | Chow Tien Jin | Combined ruler and protractor drawing instrument |
GB2277801A (en) * | 1993-05-06 | 1994-11-09 | Roger Edward Sumner | A device to establish a true perpendicular |
GB2292220A (en) * | 1994-08-11 | 1996-02-14 | Dennis George Yeo | Levelling aid |
GB2292220B (en) * | 1994-08-11 | 1998-05-20 | Dennis George Yeo | Imrpovements relating to levelling aids |
WO1997012767A1 (en) * | 1995-10-02 | 1997-04-10 | Folivi Felix | Combined protractor, compass, ruler and set square device |
FR2745752A1 (en) * | 1995-10-02 | 1997-09-12 | Folivi Felix | DEVICE SYNTHESIZING A RAPPORTEUR, A COMPASS, A RULE AND A HAMMER |
GB2379514A (en) * | 2001-09-11 | 2003-03-12 | Albert Frank Ellam | An adjustable squaring tool |
GB2379514B (en) * | 2001-09-11 | 2003-09-03 | Albert Frank Ellam | Squaring tool |
CN112262047A (en) * | 2018-04-27 | 2021-01-22 | 米沃奇电动工具公司 | Frame angle square |
CN110132089A (en) * | 2019-05-17 | 2019-08-16 | 郑州铁路职业技术学院 | A kind of planar design multifunction measuring set |
CN110132089B (en) * | 2019-05-17 | 2020-10-16 | 郑州铁路职业技术学院 | Multifunctional measuring device for planar design |
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