GB919294A - Improvements in or relating to automatic electric switches - Google Patents
Improvements in or relating to automatic electric switchesInfo
- Publication number
- GB919294A GB919294A GB2294160A GB2294160A GB919294A GB 919294 A GB919294 A GB 919294A GB 2294160 A GB2294160 A GB 2294160A GB 2294160 A GB2294160 A GB 2294160A GB 919294 A GB919294 A GB 919294A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contacts
- cam
- thermal
- blade
- bimetal
- 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
- H01H37/002—Thermally-actuated switches combined with protective means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/12—Means for adjustment of "on" or "off" operating temperature
- H01H37/18—Means for adjustment of "on" or "off" operating temperature by varying bias on the thermal element due to a separate spring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
- H01H9/0214—Hand-held casings
- H01H9/0228—Line cord switches
Landscapes
- Control Of Resistance Heating (AREA)
- Cookers (AREA)
- Thermally Actuated Switches (AREA)
Abstract
919,294. Thermal switches; cam-operated switches. GEIGER G.m.b.H., W. June 30, 1960 [April 1, 1960]; No. 22941/60. Class 38 (5). A thermal switch moving snap-action contacts by means of a temperature-responsive deformable element has a manually-rotatable control member bearing a face-cam for adjusting the deformable member and a further, concentric, face-cam controlling a further switching device. The switch is connected in the lead of a blanket or other electrical heating appliance, and in the ON position current flows through a bimetal strip 45 in series with its heater coil 47. The bimetal operates a conventional trifurcated snap-action blade and causes contacts 32, 39 to cycle. The operating temperature is adjustable by rotating a knurled disc 21 bearing a facecam in the form of a continuous gradient which bears with variable pressure on a blade 50 and hence, through a pre-set screw 53, on the bimetal 45. At the " hot " end of this cam surface is a " very hot " position in which a cam projection closes contacts 33, 34 to short out the thermal contacts and ensure a continuous current flow to the appliance. The control disc 21 is prevented by a stop from rotating through 360 degrees and at either end of its rotation an OFF position is provided in which a cam projection depresses the adjusting blade 50 sufficiently to hold open the thermal contacts 37, 39, and a further projection opens contacts 17, 25 in the other supply lead, thus providing two-pole switching.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEG29360A DE1155841B (en) | 1960-04-01 | 1960-04-01 | Electric control switch, especially for electric heaters |
Publications (1)
Publication Number | Publication Date |
---|---|
GB919294A true GB919294A (en) | 1963-02-20 |
Family
ID=7123720
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2294160A Expired GB919294A (en) | 1960-04-01 | 1960-06-30 | Improvements in or relating to automatic electric switches |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1155841B (en) |
GB (1) | GB919294A (en) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1852468A (en) * | 1930-02-04 | 1932-04-05 | Diamond Electrical Mfg Company | Thermostatic switch |
US2498127A (en) * | 1947-12-01 | 1950-02-21 | Cutler Hammer Inc | Thermally responsive switching device |
DE871797C (en) * | 1949-12-29 | 1953-03-26 | Sunvic Controls Ltd | Electric energy regulator |
GB748575A (en) * | 1953-10-19 | 1956-05-02 | Richard Collier | A new or improved thermally-responsive electric heat regulating switch |
BE534526A (en) * | 1954-01-05 | |||
US2813176A (en) * | 1956-06-25 | 1957-11-12 | Dole Valve Co | Thermostatic control device |
US2840667A (en) * | 1956-10-15 | 1958-06-24 | Gen Electric | Electric switch and thermostat control |
FR1186967A (en) * | 1957-04-13 | 1959-09-04 | Expl Des Etablissements Irga S | Connection method and device for continuous and remote control of the temperature of electric heating bodies, in particular heating pads and blankets |
-
1960
- 1960-04-01 DE DEG29360A patent/DE1155841B/en active Pending
- 1960-06-30 GB GB2294160A patent/GB919294A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1155841B (en) | 1963-10-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3684940D1 (en) | ELECTRIC HEATING FOR A BIMETAL, IN PARTICULAR FOR AN ELECTRICAL POWER CONTROL UNIT. | |
ES459593A1 (en) | Controllers for controlling the supply of electrical power to a load | |
US2727973A (en) | Temperature controllers | |
US3302001A (en) | Time-temperature control devices | |
ES342652A1 (en) | Thermally-responsive bimetallic starting switch for motors | |
GB557024A (en) | Improvements in and relating to safety switching arrangements for electrically heated devices | |
GB919294A (en) | Improvements in or relating to automatic electric switches | |
GB907345A (en) | Automatic temperature control systems | |
GB660077A (en) | Improvements in and relating to the thermal control for heating devices | |
GB710560A (en) | Improvements relating to control systems for electric heaters | |
GB1372627A (en) | Electrical room heating appliance with temperature control apparatus | |
GB692018A (en) | Improvements in thermally-actuated electrical switching arrangements | |
GB1391192A (en) | Electrical switching device | |
FR2450416A1 (en) | Electrical control for gas cooker - comprises electrically heated bimetallic strip moving gas control valve | |
GB517538A (en) | Improvements in or relating to electric hot-plates | |
GB935537A (en) | Improvements in or relating to thermostatically controlled electrical fan heating devices | |
GB790961A (en) | Improvements in or relating to electric thermal switches | |
GB903318A (en) | Improvements in thermostatic electric switches | |
GB964271A (en) | Improvements in thermostatic control device | |
GB920406A (en) | Improvements relating to means for controlling the power dissipation in electric heaters | |
GB869242A (en) | Improvements relating to temperature controls for electrically heated appliances | |
JPS54149032A (en) | Burner heater control device | |
GB586593A (en) | Improvements in or relating to temperature control systems for electric heating devices | |
GB1350153A (en) | Device for regulating room temperatures | |
GB599941A (en) | Improvements in or relating to plug connectors for electric room heaters |