GB172960A - Improvements in or relating to automatic electro-magnetic cutouts or interrupters - Google Patents
Improvements in or relating to automatic electro-magnetic cutouts or interruptersInfo
- Publication number
- GB172960A GB172960A GB33470/21A GB3347021A GB172960A GB 172960 A GB172960 A GB 172960A GB 33470/21 A GB33470/21 A GB 33470/21A GB 3347021 A GB3347021 A GB 3347021A GB 172960 A GB172960 A GB 172960A
- Authority
- GB
- United Kingdom
- Prior art keywords
- core
- switch
- spring
- holder
- overload release
- 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
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/36—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electromagnetic release and no other automatic release
- H01H73/42—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electromagnetic release and no other automatic release reset by rotatable knob or wheel
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuses (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
172,960. Kahn, L. Dec. 13, 1920, [Convention date]. A u tom a t i c circuitbreakers with overload release comprises fixed contacts p and a rotary bridging contact o, secured to an operating knob i, a spring q biassing the switch toward its open position. The switch is mounted on the outside of an insulating plug a in the form of a screw fuse-holder, within which is an electromagnetic overload release consisting of a solenoid b with core c, a light spring e being interposed between the fixed bobbin and a collar f at the end of the core c. The core is provided with a brass extension d which, when the core rises on overload overcoming the spring e, strikes one end of a spring-controlled detent h pivoted at g, releasing its upper end from a slot v in the switchoperating handle i, thus allowing the switch to open. The switch is latched in its " off " position by the detent h engaging a second slot r in the handle i, and in order to re-close the circuit, the holder a has to be unscrewed from its socket and the trigger n attached to the pull wire e has to be depressed. A melting fuse s is provided in a side channel of the holder a and interrupts the circuit if the electromagnetic overload release fails to operate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE172960X | 1920-12-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB172960A true GB172960A (en) | 1923-03-01 |
Family
ID=5690610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB33470/21A Expired GB172960A (en) | 1920-12-13 | 1921-12-13 | Improvements in or relating to automatic electro-magnetic cutouts or interrupters |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1517532A (en) |
| FR (1) | FR544448A (en) |
| GB (1) | GB172960A (en) |
| NL (1) | NL11293C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1829463A1 (en) * | 2006-03-03 | 2007-09-05 | Element -System Rudolf Bohnacker GmbH | Shelf support provided with spacer elements |
-
0
- NL NL11293D patent/NL11293C/xx active
- US US1517532D patent/US1517532A/en not_active Expired - Lifetime
-
1921
- 1921-12-12 FR FR544448D patent/FR544448A/en not_active Expired
- 1921-12-13 GB GB33470/21A patent/GB172960A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1517532A (en) | 1924-12-02 |
| NL11293C (en) | |
| FR544448A (en) | 1922-09-22 |
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