GB574855A - An improved draughtsman's template - Google Patents
An improved draughtsman's templateInfo
- Publication number
- GB574855A GB574855A GB507544A GB507544A GB574855A GB 574855 A GB574855 A GB 574855A GB 507544 A GB507544 A GB 507544A GB 507544 A GB507544 A GB 507544A GB 574855 A GB574855 A GB 574855A
- Authority
- GB
- United Kingdom
- Prior art keywords
- length
- template
- elliptical apertures
- datum line
- lengths
- 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
- B43L11/00—Non-circular-curve-drawing instruments
- B43L11/02—Non-circular-curve-drawing instruments for drawing conic sections
- B43L11/04—Non-circular-curve-drawing instruments for drawing conic sections for drawing ellipses
- B43L11/043—Non-circular-curve-drawing instruments for drawing conic sections for drawing ellipses with stencils
-
- 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
- B43L13/20—Curve rulers or templets
- B43L13/201—Stencils for drawing figures, objects
- B43L13/205—Stencils for drawing figures, objects geometrical figures
Landscapes
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Baking, Grill, Roasting (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Adornments (AREA)
Abstract
574,855. Drawing appliances. LEETE, J. F. March 18, 1944, No. 5075. [Class 97 (iii)] A template for use in preparing. isometric projections is provided with one or more elliptical apertures whose major axis, disposed at 30 or 60 degrees to a datum line, is of a determined length while its minor axis is .577 of such length. Fig. 2 shows a transparent set square in which the elliptical apertures 11 have major axes of the lengths indicated and with their minor axes of said foreshortened length. The datum line, in this case 13, is provided with a linear scale having lengths equal to .816 of the standard lengths so that foreshortened lines on the isometric projection may be of appropriate length. Hair lines &c. 19 are provided for correctly positioning the elliptical apertures. Fig. 4 shows an aperture 25 representing the outline of a nut of known size and also two elliptical apertures 28, 30 for drawing the circle on the top of the nut and the central aperture. The template is mounted on the drawing board with its datum line 13 slidable on a T-square.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE459155D BE459155A (en) | 1944-03-18 | ||
GB507544A GB574855A (en) | 1944-03-18 | 1944-03-18 | An improved draughtsman's template |
FR912302D FR912302A (en) | 1944-03-18 | 1945-07-12 | Transparent caliber for draftsman |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB507544A GB574855A (en) | 1944-03-18 | 1944-03-18 | An improved draughtsman's template |
Publications (1)
Publication Number | Publication Date |
---|---|
GB574855A true GB574855A (en) | 1946-01-23 |
Family
ID=9789283
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB507544A Expired GB574855A (en) | 1944-03-18 | 1944-03-18 | An improved draughtsman's template |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE459155A (en) |
FR (1) | FR912302A (en) |
GB (1) | GB574855A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2851778A (en) * | 1953-06-23 | 1958-09-16 | Frederick A Ross | Implements for graphically setting up and solving spherical problems |
-
0
- BE BE459155D patent/BE459155A/xx unknown
-
1944
- 1944-03-18 GB GB507544A patent/GB574855A/en not_active Expired
-
1945
- 1945-07-12 FR FR912302D patent/FR912302A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2851778A (en) * | 1953-06-23 | 1958-09-16 | Frederick A Ross | Implements for graphically setting up and solving spherical problems |
Also Published As
Publication number | Publication date |
---|---|
FR912302A (en) | 1946-08-06 |
BE459155A (en) |
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