GB789450A - Thermal-time controlled switches - Google Patents
Thermal-time controlled switchesInfo
- Publication number
- GB789450A GB789450A GB3116154A GB3116154A GB789450A GB 789450 A GB789450 A GB 789450A GB 3116154 A GB3116154 A GB 3116154A GB 3116154 A GB3116154 A GB 3116154A GB 789450 A GB789450 A GB 789450A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lever
- cam
- thermal
- bellows
- maclaren
- 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
Landscapes
- Electric Clocks (AREA)
- Toys (AREA)
- Thermally Actuated Switches (AREA)
Abstract
789,450. Thermal switches; time switches. MACLAREN & CO., Ltd., R., RICHMOND, T. G., MACLAREN, 1. G., and ADAM, 1. R. Aug. 12, 1955 [Oct. 28, 1954], No. 31161/54. Class 38 (5). A switch, suitable for controlling the heating of a building, is operated by either thermal means or time control means. As shown, Fig. 2, a micro-switch 10 (preferably as described in Specification 615,467) is operated by a first lever which is acted upon either by a pin 17 of a temperature-responsive bellows 16 or by a second lever 13 which follows a clock-driven cam 12. Ambient temperature compensation may be provided by a bellows 29 which controls a potentiometer of a heater circuit surrounding the bellows 16. In a modification the first lever is bimetallic and constitutes the thermal means. The cam is arranged to rotate daily, and means to over-ride its control at week-ends comprises a cam 35 on a ratchet wheel 34 moved twice a day by a pin 33 on the clock spindle, the cam 35 maintaining the lever 13 in its actuating position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3116154A GB789450A (en) | 1954-10-28 | 1954-10-28 | Thermal-time controlled switches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3116154A GB789450A (en) | 1954-10-28 | 1954-10-28 | Thermal-time controlled switches |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB789450A true GB789450A (en) | 1958-01-22 |
Family
ID=10318935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3116154A Expired GB789450A (en) | 1954-10-28 | 1954-10-28 | Thermal-time controlled switches |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB789450A (en) |
-
1954
- 1954-10-28 GB GB3116154A patent/GB789450A/en not_active Expired
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