GB328811A - Pressure indicators - Google Patents
Pressure indicatorsInfo
- Publication number
- GB328811A GB328811A GB1484729A GB1484729A GB328811A GB 328811 A GB328811 A GB 328811A GB 1484729 A GB1484729 A GB 1484729A GB 1484729 A GB1484729 A GB 1484729A GB 328811 A GB328811 A GB 328811A
- Authority
- GB
- United Kingdom
- Prior art keywords
- casing
- oil pressure
- dished
- stem
- screwed
- 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
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/08—Means for indicating or recording, e.g. for remote indication
- G01L19/12—Alarms or signals
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
328,811. Rotherham, K., and Eyles, A. E. May 13, 1929. Indicating in connection with. - A switch actuated by the pressure in a lubricating system, for controlling an electric circuit containing an indicating device, comprises a resilient conducting bridge 20 in the form of a flat or dished spiral spring co-operating with a pair of fixed contacts 22 and secured to the stem of a spring-pressed plunger 13 of insulating material movable in a cap 14 screwed in a casing 2, through the intermediary of a headed stem 9, by the oil pressure acting, through a passage 4, on the underside of a dished diaphragm 5 clamped in the closed lower end of the casing by a screwed ring 7. As shown, the circuit is closed whenever the oil pressure falls below a predetermined amount, but the arrangement may be such as to give the converse effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1484729A GB328811A (en) | 1929-05-13 | 1929-05-13 | Pressure indicators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1484729A GB328811A (en) | 1929-05-13 | 1929-05-13 | Pressure indicators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB328811A true GB328811A (en) | 1930-05-08 |
Family
ID=10048524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1484729A Expired GB328811A (en) | 1929-05-13 | 1929-05-13 | Pressure indicators |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB328811A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2444552A (en) * | 1945-10-09 | 1948-07-06 | Bruno Martinuzzi | Push button |
| US4616114A (en) * | 1984-11-19 | 1986-10-07 | Texas Instruments Incorporated | Pressure responsive switch having little or no differential between actuation release pressure levels |
| US5243158A (en) * | 1991-05-31 | 1993-09-07 | Herion Werke Kg | Fluid operated pressure switch for controlling a switching element |
-
1929
- 1929-05-13 GB GB1484729A patent/GB328811A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2444552A (en) * | 1945-10-09 | 1948-07-06 | Bruno Martinuzzi | Push button |
| US4616114A (en) * | 1984-11-19 | 1986-10-07 | Texas Instruments Incorporated | Pressure responsive switch having little or no differential between actuation release pressure levels |
| US5243158A (en) * | 1991-05-31 | 1993-09-07 | Herion Werke Kg | Fluid operated pressure switch for controlling a switching element |
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