GB524085A - Improvements in or relating to pressure gauges - Google Patents
Improvements in or relating to pressure gaugesInfo
- Publication number
- GB524085A GB524085A GB212139A GB212139A GB524085A GB 524085 A GB524085 A GB 524085A GB 212139 A GB212139 A GB 212139A GB 212139 A GB212139 A GB 212139A GB 524085 A GB524085 A GB 524085A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pressure
- valve
- chambers
- diaphragm
- rod
- 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
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
524,085. Pressure gauges. JAGER, B. M. Jan. 21, 1939, No. 2121. [Class 106 (ii)] One of a pair of chambers is connected to the source of pressure to be measured and the other to the said source or to the first chamber through a valve which opens solely at a predetermined pressure difference between the two chambers electrically operated means subject to this pressure difference operating a visible or audible signal. A diaphragm 13 divides the casing 12 into two chambers or compartments 14, 15. Pressure fluid is admitted to chamber 14 at 16. The diaphragm 13 carries a contact arm 17 and a pair of contacts 18, 19 adapted to engage contacts 20, 21 carried by resilient arms 22, 23 leading to terminals 24, 25. The arm 17 is connected to a terminal 27. These terminals are in circuit with a battery, condenser, and a pair of lamps a green one for terminal 24 and red for 25, the terminal 27 being a return. The part of arm 17 on the other side of the diaphragm slides on a guide 28 and has a recess formed by two inclined walls between which rests a roller 29 carried by a push rod 30, the upper end of which carries a valve 31 spring loaded at 32. The end of the rod 30 enters a blind hole in the valve a light spring 60 is located between the valve and a collar on the rod. A guiding link 30a is fitted as shown. Upon a rise in pressure, the diaphragm moves to the right, contact is made at 18, 20 and a green light shows. The displacement of the diaphragm to the right causes the rod 30 to open the valve and after a short lag the pressure is equalized and the lamp extinguished. On a fall in pressure the red lamp is lit and after a lag extinguished. This intermittent action of the lights causes the operator to bring the. pressureto its required level. In a modification in which the two chambers are separated by a rigid partition, a variation in pressure in one chamber is effective on a mercury bath which either operates the valve or in effect constitutes the relief valve below the chambers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB212139A GB524085A (en) | 1939-01-21 | 1939-01-21 | Improvements in or relating to pressure gauges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB212139A GB524085A (en) | 1939-01-21 | 1939-01-21 | Improvements in or relating to pressure gauges |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB524085A true GB524085A (en) | 1940-07-30 |
Family
ID=9733954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB212139A Expired GB524085A (en) | 1939-01-21 | 1939-01-21 | Improvements in or relating to pressure gauges |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB524085A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2966667A (en) * | 1945-06-06 | 1960-12-27 | George H Leonard | Pressure gradient detector |
-
1939
- 1939-01-21 GB GB212139A patent/GB524085A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2966667A (en) * | 1945-06-06 | 1960-12-27 | George H Leonard | Pressure gradient detector |
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