GB147987A - Improvements in or relating to measuring or gauging instruments - Google Patents
Improvements in or relating to measuring or gauging instrumentsInfo
- Publication number
- GB147987A GB147987A GB1012419A GB1012419A GB147987A GB 147987 A GB147987 A GB 147987A GB 1012419 A GB1012419 A GB 1012419A GB 1012419 A GB1012419 A GB 1012419A GB 147987 A GB147987 A GB 147987A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blocks
- levers
- strips
- micrometer screw
- magnified
- 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
Landscapes
- A Measuring Device Byusing Mechanical Method (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
147,987. Landon, J. W., and Barker, A. W. April 23, 1919. Indicating.-Extensometers, micrometer screw gauges, and other instruments required to measure under conditions of uniform pressure, are provided with a yielding means, employed to obtain uniformity of resistance in the touch or to give a magnified indication of a departure therefrom. Fig. 1 shows the application to an extensometer whereof two levers B, B<1> are attached by centre points to a test piece A, and are separated by a strut F providing at each end a fulcrum for one of the levers. The distance apart of the outer ends of the levers is measured by means of a system of guide rods L, with micrometer screw adjustment M, P, graduated for the effective length of the test-bar, which acts against the attractive force of a spring S, and a part of this system consists in the yielding-means referred to. In the form shown they consist of two long narrow strips of metal G, mounted at their ends in blocks G', G<2> which bear the lever-contracting members H, M', and when the micrometer screw is adjusted for normal tension of the spring S they are very slightly bowed, fiduciary marks upon two blocks G<3> attached to the midpoints of the strips being very slightly displaced. The strips, or equivalent members, must be such that small relative movements of their ends in the direction of their length produce large movements of the blocks. A cover R with inspection opening R' is provided. By suitable connexions the movement may be still more magnified by use of two such sets of strip in series. Scales carried by the mid-point blocks may give a direct indication of the movement of the ends, or these may be indicative by optical means.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1012419A GB147987A (en) | 1919-04-23 | 1919-04-23 | Improvements in or relating to measuring or gauging instruments |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1012419A GB147987A (en) | 1919-04-23 | 1919-04-23 | Improvements in or relating to measuring or gauging instruments |
Publications (1)
Publication Number | Publication Date |
---|---|
GB147987A true GB147987A (en) | 1920-07-23 |
Family
ID=9961932
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1012419A Expired GB147987A (en) | 1919-04-23 | 1919-04-23 | Improvements in or relating to measuring or gauging instruments |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB147987A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2543429A (en) * | 1949-06-20 | 1951-02-27 | David S Wood | Extensometer |
US2611966A (en) * | 1950-02-09 | 1952-09-30 | Battelle Development Corp | Extensometer |
US2663085A (en) * | 1951-12-01 | 1953-12-22 | Baldwin Lima Hamilton Corp | Extensometer |
US5115680A (en) * | 1991-03-04 | 1992-05-26 | Lew Hyok S | Displacement sensor with mechanical preamplification means |
-
1919
- 1919-04-23 GB GB1012419A patent/GB147987A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2543429A (en) * | 1949-06-20 | 1951-02-27 | David S Wood | Extensometer |
US2611966A (en) * | 1950-02-09 | 1952-09-30 | Battelle Development Corp | Extensometer |
US2663085A (en) * | 1951-12-01 | 1953-12-22 | Baldwin Lima Hamilton Corp | Extensometer |
US5115680A (en) * | 1991-03-04 | 1992-05-26 | Lew Hyok S | Displacement sensor with mechanical preamplification means |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2122818A (en) | Precision measuring device | |
US1650603A (en) | Tension meter | |
GB147987A (en) | Improvements in or relating to measuring or gauging instruments | |
ES414246A1 (en) | Linear dimension measuring apparatus | |
NO125688B (en) | ||
US2609610A (en) | Gauge for roll crowns | |
US1125236A (en) | Strain-indicator. | |
US1722036A (en) | Deflection dynamometer | |
GB584462A (en) | An improved measuring gauge or instrument | |
US2448645A (en) | Hardness tester | |
SU739350A1 (en) | Arrangement for measuring elastic characteristics of springs | |
US1992573A (en) | Instrument or gauge for measuring relative lengths or variations in lengths | |
US3208148A (en) | Machinist's pivotal caliper with attached dial indicator | |
GB456576A (en) | Improvements relating to measuring gauges | |
US1654964A (en) | Pendulum level | |
US1047371A (en) | Strain gage or apparatus for the measurement of the deformations materials under stress. | |
US1266313A (en) | Indicator for gaging instruments. | |
US1591631A (en) | Tension meter | |
GB445812A (en) | Improvements in and relating to thickness gage | |
US1757933A (en) | Tensiometer | |
SU724912A1 (en) | Strain-gauge | |
GB286154A (en) | Vernier measuring instrument | |
Custance | The S. I. P. universal measuring machine | |
US3206972A (en) | Furnace tensiometer | |
SU51308A1 (en) | Instrument for measuring small deformations, in particular for the calibration of strain gauges |