GB849311A - Improvements in or relating to thermally controlled electric switches - Google Patents
Improvements in or relating to thermally controlled electric switchesInfo
- Publication number
- GB849311A GB849311A GB31219/57A GB3121957A GB849311A GB 849311 A GB849311 A GB 849311A GB 31219/57 A GB31219/57 A GB 31219/57A GB 3121957 A GB3121957 A GB 3121957A GB 849311 A GB849311 A GB 849311A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spindle
- spring
- switch
- cam
- bellows
- 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
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0202—Switches
- H05B1/0208—Switches actuated by the expansion or evaporation of a gas or liquid
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/22—Condition of the washing liquid, e.g. turbidity
- D06F34/24—Liquid temperature
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/04—Heating arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/26—Details
- H01H35/2607—Means for adjustment of "ON" or "OFF" operating pressure
- H01H35/2614—Means for adjustment of "ON" or "OFF" operating pressure by varying the bias on the pressure sensitive element
-
- 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
- H01H37/36—Thermally-sensitive members actuated due to expansion or contraction of a fluid with or without vaporisation
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/10—Temperature of washing liquids; Heating means therefor
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Thermal Sciences (AREA)
- Thermally Actuated Switches (AREA)
Abstract
849,311. Thermal switches; cam-operated switches. BRITISH THERMOSTAT CO. Ltd. Oct. 2, 1958 [Oct. 4, 1957], No. 31219/57. Class 38 (5). A thermally-controlled switch has a spindle for adjusting the operational temperature by means of spring-loading mechanism and is provided with additional means for automatically displacing the spindle to increase the spring loading to ensure that the switch operates as soon as the spindle is rotated from the off position. A temperature-responsive bellows 1 expands against action of a spring 4, adjustable by means of spindle 5 and non- rotating nut 7. A lever 9 pivoted at 10 is constrained by a spring 11 to follow the movement of a stirrup 8 fixed to the end-plate 3 of bellows 1, and thereby actuates contacts 15 via switch-arm 12 and snap-action spring 13. When spindle 5 is turned to the off position a cam 16 engages an extension 17 on lever 9 causing positive actuation of the switch to the " off " condition. The cam 16 also rides on a local projection 18 in the top of the casing 19 and causes axial displacement of spindle 5 (Fig. 5, not shown) so as to increase the loading of spring 4 on bellows 1. This ensures operation of the switch to the " on " condition when the spindle is moved from the off position even if the temperature then existing lies within the operational differential of the switch.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB31219/57A GB849311A (en) | 1957-10-04 | 1957-10-04 | Improvements in or relating to thermally controlled electric switches |
FR1203463D FR1203463A (en) | 1957-10-04 | 1958-10-04 | Thermostatic device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB31219/57A GB849311A (en) | 1957-10-04 | 1957-10-04 | Improvements in or relating to thermally controlled electric switches |
Publications (1)
Publication Number | Publication Date |
---|---|
GB849311A true GB849311A (en) | 1960-09-21 |
Family
ID=10319821
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB31219/57A Expired GB849311A (en) | 1957-10-04 | 1957-10-04 | Improvements in or relating to thermally controlled electric switches |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR1203463A (en) |
GB (1) | GB849311A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3185796A (en) * | 1961-03-08 | 1965-05-25 | Saginomiya Seisakusho Co Ltd | Snap-action condition responsive switch |
-
1957
- 1957-10-04 GB GB31219/57A patent/GB849311A/en not_active Expired
-
1958
- 1958-10-04 FR FR1203463D patent/FR1203463A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR1203463A (en) | 1960-01-19 |
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