GB289203A - Improvements in or relating to extensometers - Google Patents
Improvements in or relating to extensometersInfo
- Publication number
- GB289203A GB289203A GB531927A GB531927A GB289203A GB 289203 A GB289203 A GB 289203A GB 531927 A GB531927 A GB 531927A GB 531927 A GB531927 A GB 531927A GB 289203 A GB289203 A GB 289203A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bracket
- specimen
- scale
- arm
- centre
- 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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/30—Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
Abstract
289,203. Avery, Ltd., W. & T., and Holroyd, S. Feb. 25, 1927. Linear-dimension gauges. - Comprises a bracket adapted to be clamped to a specimen to be stressed in a testing-machine and having two pointed projections engaging the usual spaced marks in the specimen, one projection being fixed to the bracket while the other is carried by a lever fulcrummed in the bracket and having attached thereto a pointer or scale co-operating with a fixed scale or index. The bracket 7 is provided with perforated lugs 7<a>, 7b through which is guided a rod 8 on the cranked end of which is a rubber buffer 9 adapted to grip the specimen 5. A collar 10 may be secured to the rod at any point and a projection on the collar engages a slot in the bracket to prevent the rod turning. The bracket is placed to engage the specimen a fixed centre 12 engaging one of the spaced centre marks on the specimen while a movable centre 14b engages the other mark. The movable centre is carried on a lever 14 mounted on a knife edge 14<a> resting on a bearing block 13 in a housing 7<d> provided on the bracket. A lug 7<g> on the lever 14 is connected by a spring 18 to a fixed pin 19 on the bracket. Secured to the arm is a long pointer 15 carrying at the outer end a curved scale 16 sliding in a slot in a curved arm 7f on the bracket the arm 7f being also provided with a scale. A screw 21 serves to adjust the arm 14 in the housing and a screw 22 to adjust the pointer 15. As the specimen extends under stress, the sudden increase in the rate of extension at the yield point is readily observed on the scale.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB531927A GB289203A (en) | 1927-02-25 | 1927-02-25 | Improvements in or relating to extensometers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB531927A GB289203A (en) | 1927-02-25 | 1927-02-25 | Improvements in or relating to extensometers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB289203A true GB289203A (en) | 1928-04-26 |
Family
ID=9793847
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB531927A Expired GB289203A (en) | 1927-02-25 | 1927-02-25 | Improvements in or relating to extensometers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB289203A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2666262A (en) * | 1948-02-21 | 1954-01-19 | Baldwin Lima Hamilton Corp | Condition responsive apparatus |
US2767476A (en) * | 1955-08-29 | 1956-10-23 | Tinius Olsen Testing Mach Co | Instrument for strain testing |
US2768447A (en) * | 1955-08-29 | 1956-10-30 | Tinius Olsen Testing Mach Co | Strain measuring instrument |
US2812584A (en) * | 1954-12-10 | 1957-11-12 | Northrop Aircraft Inc | Elongation indicating and controlling mechanism |
US2910778A (en) * | 1957-03-01 | 1959-11-03 | Tinius Olsen Testing Mach Co | Instrumentation for strain testing |
US4137759A (en) * | 1977-11-25 | 1979-02-06 | Talbert Wayne M | Belt tension indicating apparatus |
US5123175A (en) * | 1991-04-26 | 1992-06-23 | Atomic Energy Of Canada Limited | Horizontal extensometer |
US5463902A (en) * | 1993-08-27 | 1995-11-07 | University Technologies International Inc. | Soft tissue extensometer |
-
1927
- 1927-02-25 GB GB531927A patent/GB289203A/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2666262A (en) * | 1948-02-21 | 1954-01-19 | Baldwin Lima Hamilton Corp | Condition responsive apparatus |
US2812584A (en) * | 1954-12-10 | 1957-11-12 | Northrop Aircraft Inc | Elongation indicating and controlling mechanism |
US2767476A (en) * | 1955-08-29 | 1956-10-23 | Tinius Olsen Testing Mach Co | Instrument for strain testing |
US2768447A (en) * | 1955-08-29 | 1956-10-30 | Tinius Olsen Testing Mach Co | Strain measuring instrument |
US2910778A (en) * | 1957-03-01 | 1959-11-03 | Tinius Olsen Testing Mach Co | Instrumentation for strain testing |
US4137759A (en) * | 1977-11-25 | 1979-02-06 | Talbert Wayne M | Belt tension indicating apparatus |
US5123175A (en) * | 1991-04-26 | 1992-06-23 | Atomic Energy Of Canada Limited | Horizontal extensometer |
US5463902A (en) * | 1993-08-27 | 1995-11-07 | University Technologies International Inc. | Soft tissue extensometer |
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