GB787654A - Improvements in electric control devices - Google Patents
Improvements in electric control devicesInfo
- Publication number
- GB787654A GB787654A GB32923/54A GB3292354A GB787654A GB 787654 A GB787654 A GB 787654A GB 32923/54 A GB32923/54 A GB 32923/54A GB 3292354 A GB3292354 A GB 3292354A GB 787654 A GB787654 A GB 787654A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contacts
- knob
- open
- motor
- close
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Control Of Resistance Heating (AREA)
- Transmission Devices (AREA)
- Drying Of Solid Materials (AREA)
Abstract
787,654. Rotating drum driers. ROBERTSHAW-FULTON CONTROLS CO. Nov. 12, 1954 [Dec. 21, 1953], No. 32923/54. Class 34(2) [Also in Groups XXXV and XXXVII] In a control device similar to that of Specification 650,601 manually-operable means are provided for opening both the first and second switching means independently of the condition responsive means. The first and second switching means comprise springs 56, 56a, respectively carrying contacts 58, 60, and 59. When a knob 18 is rotated from an "off" position to a "start" position beyond the highest temperature setting, a cam 88 thereon engages a rod 80 which is thereby pushed to the left, Fig. 4, against the bias of a spring 82 to push a member 70, 74 to the left and close contacts 58, 59. 60. The member 74 is latched in this position by a pawl 92. When moving to the "start" position, a cam 128 on the knob releases a plunger 124 thereby allowing contacts 108, 120 to close to complete the circuits to e.g. a heater 130 and motor M of a clothes dryer. The knob can then be turned back to the desired temperature setting, and eventually when the desired temperature is attained, a diaphragm 20 moves levers 28, 38 and a tension spring 36 overcentre to close contacts 48, 50, 51 to complete a holding circuit for the motor. Further movement of lever 38 causes a part 100 thereof to release pawl 92 from member 74 so that contacts 58, 59, 60 open to de-energize the heater and break the original motor circuit. When the temperature drops sufficiently, the contacts 48, 50, 51 are snapped open to stop the motor. The knob may be turned to the "off" position at any time so that plunger 124 is moved to open contacts 108, 120 and rod 102 is moved to push part 100 of lever 28 to release pawl 92 so that contacts 58, 59, 60 open. The device may alternatively control bake and broil elements in an oven so that both elements are first energized simultaneously and then the bake element alone. Specification 711,218 [Group XXXVII] also is referred to.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US399432A US2715664A (en) | 1953-12-21 | 1953-12-21 | Control devices for electrically heated appliances |
US787586XA | 1954-01-05 | 1954-01-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB787654A true GB787654A (en) | 1957-12-11 |
Family
ID=26760904
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB32923/54A Expired GB787654A (en) | 1953-12-21 | 1954-11-12 | Improvements in electric control devices |
GB34821/54A Expired GB787586A (en) | 1953-12-21 | 1954-12-01 | Improvements relating to electric control devices |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB34821/54A Expired GB787586A (en) | 1953-12-21 | 1954-12-01 | Improvements relating to electric control devices |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE533977A (en) |
CH (1) | CH330627A (en) |
DE (2) | DE1032443B (en) |
GB (2) | GB787654A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2168535A (en) * | 1984-12-18 | 1986-06-18 | Diamond H Controls Ltd | Thermostats |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112701007B (en) * | 2020-12-11 | 2023-03-24 | 上海宝佳医疗器械有限公司 | Pressure controller easy for positive and negative pressure switching detection |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2409434A (en) * | 1940-11-20 | 1946-10-15 | Gen Motors Corp | Domestic appliance |
US2403824A (en) * | 1940-12-14 | 1946-07-09 | Gen Electric | Control device |
US2541314A (en) * | 1948-10-27 | 1951-02-13 | Robertshaw Fulton Controls Co | Temperature regulating device |
US2591802A (en) * | 1950-02-15 | 1952-04-08 | Robertshaw Fulton Controls Co | Thermostatic control switch |
-
1954
- 1954-11-12 GB GB32923/54A patent/GB787654A/en not_active Expired
- 1954-12-01 GB GB34821/54A patent/GB787586A/en not_active Expired
- 1954-12-08 BE BE533977A patent/BE533977A/xx unknown
- 1954-12-14 DE DER15606A patent/DE1032443B/en active Pending
- 1954-12-21 CH CH330627D patent/CH330627A/en unknown
-
1955
- 1955-01-03 DE DER15731A patent/DE1083951B/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2168535A (en) * | 1984-12-18 | 1986-06-18 | Diamond H Controls Ltd | Thermostats |
Also Published As
Publication number | Publication date |
---|---|
DE1032443B (en) | 1958-06-19 |
BE533977A (en) | 1955-06-08 |
CH330627A (en) | 1958-06-15 |
DE1083951B (en) | 1960-06-23 |
GB787586A (en) | 1957-12-11 |
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