GB191220050A - Improvements in "Draftsmen's Triangles." - Google Patents
Improvements in "Draftsmen's Triangles."Info
- Publication number
- GB191220050A GB191220050A GB191220050DA GB191220050A GB 191220050 A GB191220050 A GB 191220050A GB 191220050D A GB191220050D A GB 191220050DA GB 191220050 A GB191220050 A GB 191220050A
- Authority
- GB
- United Kingdom
- Prior art keywords
- degrees
- edges
- pair
- angle
- angles
- 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
- Finishing Walls (AREA)
- Cookers (AREA)
Abstract
20,050. Crispin, F. S. May 2, [Convention date]. Squares. - A draughtsman's triangle having a pair of outside edges A, B at an angle of 90 degrees to each other, and another pair of outside edges C, D in alinement with each other and respectively at angles of 45 degrees to the first-named pair of edges in one form, has a third pair of outside edges E, F at an angle of 150 degrees to each other and at angles of 15 degrees to the edges C, D. The triangle may be cut away at its central portion and be provided with a pair of interior working edges G, H arranged at an angle of 120 degrees to each other and at angles of 15 degrees to one pair of outside edges ; in this modification, the outside edges E, F may be omitted and the edges C, D may be continued to form a single continuous edge as indicated by the dotted line. The instrument is for laying-off any angle that is a multiple of 15 degrees.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US191220050XA | 1912-05-02 | 1912-05-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB191220050A true GB191220050A (en) | 1912-11-28 |
Family
ID=32656820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB191220050D Expired GB191220050A (en) | 1912-05-02 | 1912-09-03 | Improvements in "Draftsmen's Triangles." |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR447916A (en) |
| GB (1) | GB191220050A (en) |
-
1912
- 1912-09-03 GB GB191220050D patent/GB191220050A/en not_active Expired
- 1912-09-03 FR FR447916A patent/FR447916A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR447916A (en) | 1913-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB191220050A (en) | Improvements in "Draftsmen's Triangles." | |
| GB147041A (en) | Improvements in turning and planing tools | |
| GB191001564A (en) | Adjustable Protractor Set Square. | |
| USD43447S (en) | Design for a shear-blade | |
| CA189366A (en) | Barber's shears | |
| USD102387S (en) | Design fob a beam compass or | |
| AU577412A (en) | Improvements in ships' compasses | |
| AU446812A (en) | Improvements in or relating to tyres andin the manufacture ofthe same | |
| USD134950S (en) | Design for a fountain pen | |
| GB191210622A (en) | An Improved Combined Bevel and Rule. | |
| USD89403S (en) | Harry r | |
| USD99817S (en) | Design for a stoker housing | |
| USD122911S (en) | Design for an instrument dial | |
| GB105998A (en) | Improvements in or relating to Rulers. | |
| GB191319253A (en) | Improvements in or relating to Angles for Laying Out Letters. | |
| GB191301311A (en) | Improvements in Compass Dividers. | |
| GB121326A (en) | Improvements in Playing Cards. | |
| GB531491A (en) | Improvements in or relating to sound recording stylus | |
| GB104839A (en) | Improvements in and relating to Measuring Devices. | |
| GB191329842A (en) | Improvements in Suppositories. | |
| AU482412A (en) | Improvements in or relating to patterns. B | |
| ES27418U (en) | New folding-scraper. (Machine-translation by Google Translate, not legally binding) | |
| AU1072113A (en) | Improvements in and relating to buoys | |
| GB520708A (en) | Improvements in and relating to interlocking sheet piling | |
| GB191315375A (en) | Improvements in Oars. |