GB150585A - Means for detecting changes in temperatures - Google Patents
Means for detecting changes in temperaturesInfo
- Publication number
- GB150585A GB150585A GB3155819A GB3155819A GB150585A GB 150585 A GB150585 A GB 150585A GB 3155819 A GB3155819 A GB 3155819A GB 3155819 A GB3155819 A GB 3155819A GB 150585 A GB150585 A GB 150585A
- Authority
- GB
- United Kingdom
- Prior art keywords
- temperature
- alarm
- tube
- mercury
- circuit
- 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
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K5/00—Measuring temperature based on the expansion or contraction of a material
- G01K5/02—Measuring temperature based on the expansion or contraction of a material the material being a liquid
- G01K5/16—Measuring temperature based on the expansion or contraction of a material the material being a liquid with electric contacts
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fire-Detection Mechanisms (AREA)
- Emergency Alarm Devices (AREA)
Abstract
150,585. Hipwell, H. Le H. Dec. 16, 1919. Alarms operated by expansion and contraction of gases; electric alarm systems. - Relates to temperature alarms of the type in which the expansion or contraction of air in a closed vessel acts through tubing upon mercury in a U-tube provided with electric contacts, so that an alarm circuit is closed or opened on the occurrence of a predetermined high or low temperature. In order to increase the sensitiveness, the mercury is contained in a part of the U-tube 7 of restricted diameter. The temperature at which the alarm is given may be adjusted either by altering the position of the high-temperature contact wire 13 by means of a screw 12, or by rotating the support 9 on which the U-tube is mounted. A flexible pipe 11 connects the U-tube to the air-tubing 10. In the case of normal slow rises of temperature, the air escapes through a slightly-open cock 16 and a filter 15. A low-temperature alarm is given by means of a wire 20, which is normally below the surface of the mercury and is included in a normally-closed circuit containing a relay, which, when the circuit is broken, closes the alarm circuit. The alarm may indicate the extinction of a light by foul gases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3155819A GB150585A (en) | 1919-12-16 | 1919-12-16 | Means for detecting changes in temperatures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3155819A GB150585A (en) | 1919-12-16 | 1919-12-16 | Means for detecting changes in temperatures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB150585A true GB150585A (en) | 1920-09-09 |
Family
ID=10324905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3155819A Expired GB150585A (en) | 1919-12-16 | 1919-12-16 | Means for detecting changes in temperatures |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB150585A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110504513A (en) * | 2019-08-28 | 2019-11-26 | 胡银松 | Ceramic filter is used in a kind of 5G communication |
-
1919
- 1919-12-16 GB GB3155819A patent/GB150585A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110504513A (en) * | 2019-08-28 | 2019-11-26 | 胡银松 | Ceramic filter is used in a kind of 5G communication |
| CN110504513B (en) * | 2019-08-28 | 2020-12-29 | 南京华脉科技股份有限公司 | Ceramic filter for 5G communication |
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