GB259335A - Improvements in or relating to electro-thermic indicators - Google Patents
Improvements in or relating to electro-thermic indicatorsInfo
- Publication number
- GB259335A GB259335A GB1924725A GB1924725A GB259335A GB 259335 A GB259335 A GB 259335A GB 1924725 A GB1924725 A GB 1924725A GB 1924725 A GB1924725 A GB 1924725A GB 259335 A GB259335 A GB 259335A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contact
- indicating
- pressure
- current
- temperature
- 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
- G01K5/48—Measuring temperature based on the expansion or contraction of a material the material being a solid
- G01K5/56—Measuring temperature based on the expansion or contraction of a material the material being a solid constrained so that expansion or contraction causes a deformation of the solid
- G01K5/58—Measuring temperature based on the expansion or contraction of a material the material being a solid constrained so that expansion or contraction causes a deformation of the solid the solid body being constrained at more than one point, e.g. rod, plate, diaphragm
- G01K5/60—Measuring temperature based on the expansion or contraction of a material the material being a solid constrained so that expansion or contraction causes a deformation of the solid the solid body being constrained at more than one point, e.g. rod, plate, diaphragm the body being a flexible wire or ribbon
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
259,335. Kõlle, T. July 29, 1925. Bourdon pressure gauges; indicating-means for. -Comprises thermo-electric means for indicating at a distance temperature, pressure, the velocity of a current of air or gas, &c. characterized by the combination of two similar electric devices connected to the same source of current, the temperature and length of a conductor in one device being dependent on the factor to be measured while the conductor conditions in the other device depend upon and agree with those in the first and effect movement of a pointer over a scale. In the case illustrated of a pressure gauge, each electric device comprises a bare conductor 2 wound around a plate 3 and insulated therefrom, while the top parts are connected to a cross-piece 4 and insulated. A rod 5 connected to the cross-piece is pressed upwards by a spring 7 engaging a collar 6 and is connected to a bell-crank 9 pivoted in a bracket 8. The bellcrank carries a contact 10 facing a contact 11 carried by the free end of a Bourdon tube 12, the free end of which moves against the influence of a spring 14 which may be adjusted by a screw 15. The lower device is similar except that the rod 5 is connected by a link and pin-and-slot to a toothed sector 17 in gear with a pinion moving a needle 19 over a scale. The devices are connected up in series with a source of current by lead 21, flexible leads 22, 23, 24, leads 25, flexible leads 26, 27 and lead 28. In use, the contact 11 is moved by a rising pressure to engage the contact 10 and make the circuit; the conductors are warmed and lengthen and the spring 7 moves the contact 10 away from the contact 11. The conductors cool and contact is re-established and so on until a balance is struck when the reading of the needle 19 on its scale indicates the pressure. For indicating temperature one contact of the device is moved by a member exposed to the temperature. For indicating the velocity of an air or gas current, the two pipes from a Pitot tube device are led to opposite sides of a diaphragm actuating a contact similarly to the Bourdon tube 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1924725A GB259335A (en) | 1925-07-29 | 1925-07-29 | Improvements in or relating to electro-thermic indicators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1924725A GB259335A (en) | 1925-07-29 | 1925-07-29 | Improvements in or relating to electro-thermic indicators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB259335A true GB259335A (en) | 1926-10-14 |
Family
ID=10126172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1924725A Expired GB259335A (en) | 1925-07-29 | 1925-07-29 | Improvements in or relating to electro-thermic indicators |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB259335A (en) |
-
1925
- 1925-07-29 GB GB1924725A patent/GB259335A/en not_active Expired
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