GB139053A - Improvements in and relating to parallel rules - Google Patents
Improvements in and relating to parallel rulesInfo
- Publication number
- GB139053A GB139053A GB846819A GB846819A GB139053A GB 139053 A GB139053 A GB 139053A GB 846819 A GB846819 A GB 846819A GB 846819 A GB846819 A GB 846819A GB 139053 A GB139053 A GB 139053A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relating
- collets
- rulers
- arm
- order
- 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
- B43L7/10—Plural straightedges relatively movable
- B43L7/12—Square and pivoted straightedges
-
- 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
- B43L7/125—Comprising at least two straightedges remaining parallel
Landscapes
- Length-Measuring Instruments Using Mechanical Means (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
139,053. Wace, E. F. April 4, 1919. Rulers.-In order to measure the separation between the members F, G of a parallel ruler in any desired units, a measuring-arm B is pivoted at 0 to the member F, and has an extension P which can be set along one of a number of radial lines on a member A. The graduations on the arm B are read against the edge E of the member G. The radial lines may be marked on the member G. In order to limit the extent of opening of the rulers, an adjustable stop may be provided consisting of collets C<1>, C<2>, Fig. 2, carrying detents S', S<2> adapted to abut against the links L, M. The collets may be secured in any desired position by tightening the nut N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB846819A GB139053A (en) | 1919-04-04 | 1919-04-04 | Improvements in and relating to parallel rules |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB846819A GB139053A (en) | 1919-04-04 | 1919-04-04 | Improvements in and relating to parallel rules |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB139053A true GB139053A (en) | 1920-02-26 |
Family
ID=9853029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB846819A Expired GB139053A (en) | 1919-04-04 | 1919-04-04 | Improvements in and relating to parallel rules |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB139053A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0168948A1 (en) * | 1984-06-20 | 1986-01-22 | CAMPBELL, Forbes Sutherland | Parallel rulers |
| GB2426069A (en) * | 2005-05-14 | 2006-11-15 | David John Young | A parallel rule comprising two rulers linked by at least two parallel cross-arms |
| US7897557B2 (en) | 2006-05-19 | 2011-03-01 | Henkel Ag & Co. Kgaa | Encapsulated bleaching agent particles |
-
1919
- 1919-04-04 GB GB846819A patent/GB139053A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0168948A1 (en) * | 1984-06-20 | 1986-01-22 | CAMPBELL, Forbes Sutherland | Parallel rulers |
| GB2426069A (en) * | 2005-05-14 | 2006-11-15 | David John Young | A parallel rule comprising two rulers linked by at least two parallel cross-arms |
| GB2426069B (en) * | 2005-05-14 | 2011-02-09 | David John Young | Plotting device |
| US7897557B2 (en) | 2006-05-19 | 2011-03-01 | Henkel Ag & Co. Kgaa | Encapsulated bleaching agent particles |
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