GB292378A - Improvements in drawing, setting-out and like instruments - Google Patents
Improvements in drawing, setting-out and like instrumentsInfo
- Publication number
- GB292378A GB292378A GB2046827A GB2046827A GB292378A GB 292378 A GB292378 A GB 292378A GB 2046827 A GB2046827 A GB 2046827A GB 2046827 A GB2046827 A GB 2046827A GB 292378 A GB292378 A GB 292378A
- Authority
- GB
- United Kingdom
- Prior art keywords
- square
- paper
- instrument
- tongues
- celluloid
- 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
-
- 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
- B43L7/027—Plural non-adjustable straightedges fixed at right angles
- B43L7/0275—Triangles
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
292,378. Page, A. H. Aug. 3, 1927. Protractors; rules; squares. - A drawing &c. instrument is provided with supporting means adapted to maintain the instrument normally spaced from the paper &c. but displaceable so as to bring the operative face or edge of the instrument into contact with the paper when required for ruling &c. The Figures show a celluloid &c. setsquare embodying the invention. The square 1 is formed with three integral tongues 2 by the removal of the portions 3 of the celluloid and in each of the tongues is secured a steel pin 4 with rounded ends normally projecting beyond the surfaces of the square. The. square rests on these pins whilst being moved about over the paper &c., but pressure on the upper surface of the square displaces the tongues as shown in Fig. 3 so that the lower face of the square is brought into contact with the paper when a line is to be drawn. In the case of a wooden square &c. the resilient supporting-members may be formed as springs supported in slots or holes in the square and carrying balls &c. on their free ends.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2046827A GB292378A (en) | 1927-08-03 | 1927-08-03 | Improvements in drawing, setting-out and like instruments |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2046827A GB292378A (en) | 1927-08-03 | 1927-08-03 | Improvements in drawing, setting-out and like instruments |
Publications (1)
Publication Number | Publication Date |
---|---|
GB292378A true GB292378A (en) | 1928-06-21 |
Family
ID=10146425
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2046827A Expired GB292378A (en) | 1927-08-03 | 1927-08-03 | Improvements in drawing, setting-out and like instruments |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB292378A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3136064A (en) * | 1957-03-12 | 1964-06-09 | Francis D Brewer | Control of drafting operations |
US3363319A (en) * | 1966-10-03 | 1968-01-16 | Miles R. Greer | Marking guide |
US3482318A (en) * | 1968-12-23 | 1969-12-09 | Paul O W Hopkinson | Drafting instrument |
EP0293628A1 (en) * | 1987-06-03 | 1988-12-07 | Walter Hebel GmbH & Co | Drawing head |
EP1726454B1 (en) * | 2005-04-21 | 2008-03-19 | KUM Limited | Drafting instrument |
-
1927
- 1927-08-03 GB GB2046827A patent/GB292378A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3136064A (en) * | 1957-03-12 | 1964-06-09 | Francis D Brewer | Control of drafting operations |
US3363319A (en) * | 1966-10-03 | 1968-01-16 | Miles R. Greer | Marking guide |
US3482318A (en) * | 1968-12-23 | 1969-12-09 | Paul O W Hopkinson | Drafting instrument |
EP0293628A1 (en) * | 1987-06-03 | 1988-12-07 | Walter Hebel GmbH & Co | Drawing head |
EP1726454B1 (en) * | 2005-04-21 | 2008-03-19 | KUM Limited | Drafting instrument |
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