GB879127A - Improvements in and relating to pneumatic instruments for linear measurement - Google Patents
Improvements in and relating to pneumatic instruments for linear measurementInfo
- Publication number
- GB879127A GB879127A GB1882858A GB1882858A GB879127A GB 879127 A GB879127 A GB 879127A GB 1882858 A GB1882858 A GB 1882858A GB 1882858 A GB1882858 A GB 1882858A GB 879127 A GB879127 A GB 879127A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pistons
- nozzle
- workpiece
- nozzles
- pressure
- 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
- G01B13/00—Measuring arrangements characterised by the use of fluids
- G01B13/02—Measuring arrangements characterised by the use of fluids for measuring length, width or thickness
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
879,127. Pneumatic gauging apparatus. DEUTSCHE AKADEMIE DER WISSENSCHAFTEN ZA BERLIN. June 12, 1958 [March 26, 1958], No. 18828/58. Class 106 (2). A pneumatic linear-dimension gauge has a main nozzle 1 and a measuring nozzle 11 and the cross-section of the main nozzle 1 is automatically varied by means 2 operated by two pistons 3, 4 so that the pressure drops in the two nozzles remain constant and the pressures before the nozzles are in inverse ratio to the cross-sectional areas of the pistons, the displacement of the pistons 3, 4 being used as an indication of the required dimension. Air at a constant pressure is supplied at 10 and passes through the main nozzle 1, controlled by a needle valve 2, to the measuring nozzle 11 in front of which the workpiece is placed. The pistons 3, 4 are of different diameters and are connected to the needle 2, and the space 7 above the larger piston 4 is connected to the space 8 between the two nozzles. Thus the ratio of the pressures in the chambers 6, 8 is maintained constant at the desired value. If the nozzle 11 is decreased in size due to a change in the workpiece, the pressure in the chamber 8 increases and acts on the piston 4, thus closing the nozzle 1 until the original conditions are restored. The movement of the valve 2 is indicated on the scale 9 as a measure of the workpiece size. This movement may be used for control purposes. To reduce frictional influences, the guides of the pistons may be constructed as flow bearings, lubricated by air.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DED0277728 | 1958-03-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB879127A true GB879127A (en) | 1961-10-04 |
Family
ID=7064541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1882858A Expired GB879127A (en) | 1958-03-26 | 1958-06-12 | Improvements in and relating to pneumatic instruments for linear measurement |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB879127A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116379879A (en) * | 2023-06-07 | 2023-07-04 | 机械工业勘察设计研究院有限公司 | Crack detection device for ancient building and application method of crack detection device |
-
1958
- 1958-06-12 GB GB1882858A patent/GB879127A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116379879A (en) * | 2023-06-07 | 2023-07-04 | 机械工业勘察设计研究院有限公司 | Crack detection device for ancient building and application method of crack detection device |
| CN116379879B (en) * | 2023-06-07 | 2023-08-22 | 机械工业勘察设计研究院有限公司 | Crack detection device for ancient building and application method of crack detection device |
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