GB352755A - Improvements in drafting instruments - Google Patents
Improvements in drafting instrumentsInfo
- Publication number
- GB352755A GB352755A GB2267730A GB2267730A GB352755A GB 352755 A GB352755 A GB 352755A GB 2267730 A GB2267730 A GB 2267730A GB 2267730 A GB2267730 A GB 2267730A GB 352755 A GB352755 A GB 352755A
- Authority
- GB
- United Kingdom
- Prior art keywords
- casing
- graduations
- window
- openings
- roller
- 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
- B43L7/04—Straightedges with rollers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
352,755. Parallel rulers. SODERMAN, O. E., 235, East 40th Street, and NELSON, A. R., 2090, Bryant Avenue, both in New York, U.S.A. July 28, 1930, No. 22677. [Class 97 (iii).] In a parallel ruler comprising a casing enclosing a rubber covered roller marked with graduations adapted to be read through an opening or openings in the casing, the openings are provided with indicators with which the graduations are adapted to register. In the form shown, the upper part 12 of the casing 10 has curved sides 13 forming fingerrests and merging into the scales 14, 15. The roller 19 is mounted in endplates 20, 21 by screws 22 and carries graduations 26 adapted to be viewed through a window 27 in the casing. A wire 28 stretched across the window is provided as an indicator.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2267730A GB352755A (en) | 1930-07-28 | 1930-07-28 | Improvements in drafting instruments |
FR699926D FR699926A (en) | 1930-07-28 | 1930-08-01 | Instrument for drawing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2267730A GB352755A (en) | 1930-07-28 | 1930-07-28 | Improvements in drafting instruments |
Publications (1)
Publication Number | Publication Date |
---|---|
GB352755A true GB352755A (en) | 1931-07-16 |
Family
ID=10183313
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2267730A Expired GB352755A (en) | 1930-07-28 | 1930-07-28 | Improvements in drafting instruments |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR699926A (en) |
GB (1) | GB352755A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2789355A (en) * | 1951-07-28 | 1957-04-23 | Priess Hans | Parallel ruler fitted with rollers |
US4283861A (en) * | 1979-11-16 | 1981-08-18 | Timmis William W | Plotting device |
GB2213947A (en) * | 1987-12-23 | 1989-08-23 | Keith Wah Chan | Drawing instrument |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2645076A1 (en) * | 1989-03-30 | 1990-10-05 | Rouault Jean Claude | Graduated ruler with cylinder essentially for drawing parallel and perpendicular lines |
-
1930
- 1930-07-28 GB GB2267730A patent/GB352755A/en not_active Expired
- 1930-08-01 FR FR699926D patent/FR699926A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2789355A (en) * | 1951-07-28 | 1957-04-23 | Priess Hans | Parallel ruler fitted with rollers |
US4283861A (en) * | 1979-11-16 | 1981-08-18 | Timmis William W | Plotting device |
GB2213947A (en) * | 1987-12-23 | 1989-08-23 | Keith Wah Chan | Drawing instrument |
Also Published As
Publication number | Publication date |
---|---|
FR699926A (en) | 1931-02-21 |
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