GB286042A - Improvements relating to folding rules - Google Patents
Improvements relating to folding rulesInfo
- Publication number
- GB286042A GB286042A GB37827A GB37827A GB286042A GB 286042 A GB286042 A GB 286042A GB 37827 A GB37827 A GB 37827A GB 37827 A GB37827 A GB 37827A GB 286042 A GB286042 A GB 286042A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pin
- rule
- strips
- hinge
- hinge pin
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B3/00—Measuring instruments characterised by the use of mechanical techniques
- G01B3/02—Rulers with scales or marks for direct reading
- G01B3/04—Rulers with scales or marks for direct reading rigid
- G01B3/06—Rulers with scales or marks for direct reading rigid folding
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Hinge Accessories (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
286,042. Preston, S. P. Jan. 6, 1927. Pivoting a d j u s tments. - In a hinge joint for rules, having its axis parallel to a face of the rule and comprising strips or members on the rule sections connected by a hinge pin, a spring or other resilient element or elements is or are arranged on the hinge pin to press the hinge parts into frictional engagement with one another to hold the rule straight. The hinge pin 1 carries a plurality of thin metal strips 2 each of which has an eye portion engaging the pin while the remaining part of the strip is embedded in a cut provided in the end of one of the wood sections of the rule. The pairs of strips 2 are spaced apart by means of a coil spring 5 which in the example shown is of square cross section and which keeps the strips of each pair pressed together. The usual cylindrical washers 6 are provided at the ends of the pin and are retained by countersunk heads 7 formed on the pin. Instead of coiled springs a tube of rubber may be used.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB37827A GB286042A (en) | 1927-01-06 | 1927-01-06 | Improvements relating to folding rules |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB37827A GB286042A (en) | 1927-01-06 | 1927-01-06 | Improvements relating to folding rules |
Publications (1)
Publication Number | Publication Date |
---|---|
GB286042A true GB286042A (en) | 1928-03-01 |
Family
ID=9703355
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB37827A Expired GB286042A (en) | 1927-01-06 | 1927-01-06 | Improvements relating to folding rules |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB286042A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3503130A (en) * | 1968-02-16 | 1970-03-31 | Rabone Chesterman Ltd | Folding rules |
-
1927
- 1927-01-06 GB GB37827A patent/GB286042A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3503130A (en) * | 1968-02-16 | 1970-03-31 | Rabone Chesterman Ltd | Folding rules |
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