GB487827A - Thermal switches - Google Patents
Thermal switchesInfo
- Publication number
- GB487827A GB487827A GB5174/38A GB517438A GB487827A GB 487827 A GB487827 A GB 487827A GB 5174/38 A GB5174/38 A GB 5174/38A GB 517438 A GB517438 A GB 517438A GB 487827 A GB487827 A GB 487827A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plate
- strip
- plugs
- heater
- zero coefficient
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/32—Thermally-sensitive members
- H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
- H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Thermally Actuated Switches (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
487,827. Thermal switches. STAN. DARD TELEPHONES & CABLES, Ltd. Feb. 18, 1938, No. 5174. Convention date, March 4, 1937. [Class 38 (v)] [Also in Groups XIII and XXXV] A bimetallic strip 20, of brass and a nickelsteel alloy of substantially zero coefficient of expansion, is mounted in a slightly shorter hook-ended support 15 of similar alloy with zero coefficient. In the application to a thermal switch for regulating temperature in a quartz crystal oscillator housing, an adjustable insulated contact screw 21 is engaged by the strip 20 to complete the circuit of a heater 25 mounted on a metal plate 12 adjacent to the strip. The opposite side of the plate 12 carries electrodes 37, 38, which, with an intermediate quartz crystal plate 39, are held by a spring 40 against the plate 12. The switch and heater are connected in series to two plugs 35, 50, and the crystal electrodes to the plug 50 and another plug 52. The plugs are mounted in an insulating base 10 secured to the casing 55.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US128966A US2233884A (en) | 1937-03-04 | 1937-03-04 | Thermal switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB487827A true GB487827A (en) | 1938-06-27 |
Family
ID=22437843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5174/38A Expired GB487827A (en) | 1937-03-04 | 1938-02-18 | Thermal switches |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2233884A (en) |
| FR (1) | FR834274A (en) |
| GB (1) | GB487827A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2807731A (en) * | 1954-01-27 | 1957-09-24 | Standard Electronics Corp | Crystal assembly and mounting means therefor |
| US2881289A (en) * | 1956-06-18 | 1959-04-07 | Gen Motors Corp | Circuit control |
| US2968708A (en) * | 1956-11-28 | 1961-01-17 | Sagona Charles | Article for use in an electrical switch device or in a thermostatically-controlled mechanism |
-
1937
- 1937-03-04 US US128966A patent/US2233884A/en not_active Expired - Lifetime
-
1938
- 1938-02-18 GB GB5174/38A patent/GB487827A/en not_active Expired
- 1938-02-25 FR FR834274D patent/FR834274A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2233884A (en) | 1941-03-04 |
| FR834274A (en) | 1938-11-16 |
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