GB754455A - Improvements in or relating to combined automatically and manually operable electric switches - Google Patents
Improvements in or relating to combined automatically and manually operable electric switchesInfo
- Publication number
- GB754455A GB754455A GB392054A GB392054A GB754455A GB 754455 A GB754455 A GB 754455A GB 392054 A GB392054 A GB 392054A GB 392054 A GB392054 A GB 392054A GB 754455 A GB754455 A GB 754455A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lever
- bimetal
- blade
- contacts
- manually operable
- 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
- H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
- H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
- H01H77/04—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrothermal opening
Landscapes
- Breakers (AREA)
- Thermally Actuated Switches (AREA)
Abstract
754,455. Thermal switches; tumbler switches. LITTELFUSE, Inc. Feb. 10, 1954 No. 3920/54. Class 38(5) An automatically and manually operable switch comprises a snap-acting bimetal blade carrying a contact normally engaging a fixed contact, the bimetal opening and closing the circuit on temperature changes, and a manually operable lever which in one position allows the bimetal to operate and in another position engages the bimetal to open the contacts. The bimetal 18 is trifurcated and bowed, and is urged against the head 26 of a mounting post 25 by a spring 28. Movable contacts 22 carried by the blade co-operate with fixed contacts 16. The operating lever 42 is mounted by a spherical part 43 in shaped openings in cover parts 31, 45 and has a spring plunger 49 co-operating with an undulating surface 39 on an inverted U-shaped lever 34 having rounded portions 35 engaging bearing recesses 32 in the base. The lever 34 has two pins 38 which are normally removed from the path of the blade 18 when lever 42 is in the Fig. 2 position, thereby permitting the automatic operation. If lever 42 is moved to the Fig. 1 position the pins 38 engage the side arms of the blade 18 which is forced over-centre to open the contacts which remain open until the lever 42 is restored.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NLAANVRAGE8302604,A NL185451C (en) | 1954-02-10 | PROCEDURE FOR THE MANUFACTURE OF AN ARMED WORK PIECE ON ONE OR MORE EDGES. | |
US234775A US2681962A (en) | 1951-07-02 | 1951-07-02 | Combined circuit breaker and switch |
GB392054A GB754455A (en) | 1954-02-10 | 1954-02-10 | Improvements in or relating to combined automatically and manually operable electric switches |
CH323744D CH323744A (en) | 1954-02-10 | 1954-03-01 | Combined overcurrent and toggle switch |
DEL18143A DE1036991B (en) | 1954-02-10 | 1954-03-01 | Toggle switch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB392054A GB754455A (en) | 1954-02-10 | 1954-02-10 | Improvements in or relating to combined automatically and manually operable electric switches |
Publications (1)
Publication Number | Publication Date |
---|---|
GB754455A true GB754455A (en) | 1956-08-08 |
Family
ID=9767381
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB392054A Expired GB754455A (en) | 1951-07-02 | 1954-02-10 | Improvements in or relating to combined automatically and manually operable electric switches |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH323744A (en) |
GB (1) | GB754455A (en) |
NL (1) | NL185451C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3529109A (en) * | 1968-03-12 | 1970-09-15 | Sylvania Electric Prod | Multiple circuit control switch with guide stops for limiting the vertical travel of a springlike movable contact |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4127754A (en) * | 1976-10-07 | 1978-11-28 | Cutler-Hammer, Inc. | Pivoting and sliding contactors and operating member therefor in electric switches |
-
0
- NL NLAANVRAGE8302604,A patent/NL185451C/en active
-
1954
- 1954-02-10 GB GB392054A patent/GB754455A/en not_active Expired
- 1954-03-01 CH CH323744D patent/CH323744A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3529109A (en) * | 1968-03-12 | 1970-09-15 | Sylvania Electric Prod | Multiple circuit control switch with guide stops for limiting the vertical travel of a springlike movable contact |
Also Published As
Publication number | Publication date |
---|---|
NL185451C (en) | |
CH323744A (en) | 1957-08-15 |
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