GB244548A - Improvements relating to automatic electric circuit-breakers - Google Patents
Improvements relating to automatic electric circuit-breakersInfo
- Publication number
- GB244548A GB244548A GB2394424A GB2394424A GB244548A GB 244548 A GB244548 A GB 244548A GB 2394424 A GB2394424 A GB 2394424A GB 2394424 A GB2394424 A GB 2394424A GB 244548 A GB244548 A GB 244548A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- contact
- engagement
- automatic
- breakers
- 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
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/20—Bridging contacts
- H01H1/2016—Bridging contacts in which the two contact pairs commutate at substantially different moments
Landscapes
- Breakers (AREA)
Abstract
244,548. Johnson, E. M., and Metropolitan-Vickers Electrical Co., Ltd. Oct. 9, 1924. Automatic cricuit-breakers.-Automatic circuitbreakers of the loose handle type have each end of the bridge piece or equivalent capable of independent movement, the closing mechanism first moving one end into engagement with its co-operating contact where it is held by tripping mechanism against a spring return after which the other end is brought into engagement with the other fixed contact so that if excess current flows on completion of the circuit the end which was first moved into contact engagement may be immediately tripped to open the circuit. As shown in Figs. 5 - - 7 the bridge piece 3 is carried by a member 6 which on operation of a cam 12 by a handle 11 is moved from the position shown in Fig. 5 to cause the arcing tip 5 to engage a fixed contact 1 the toggle 7 being held in its extended position by an automatic latch 8 as shown in the dotted position in Fig. 6. If the bell crank 13 is now rotated its forked end engages the pivot pin 14 between the member 6 and a pivoted link 9 and causes the lower end of the bridging contact 3 to engage the fixed contacts 2 so completing the circuit. If however on completion of the circuit the current is of a sufficiently high value to operate the overload device the catch 8 is immediately withdrawn and a return spring which may be connected between the pivot 15 and a fixed point causes the toggle 7 to collapse and moves the contact 3 to break the circuit as shown in Fig. 7.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2394424A GB244548A (en) | 1924-10-09 | 1924-10-09 | Improvements relating to automatic electric circuit-breakers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2394424A GB244548A (en) | 1924-10-09 | 1924-10-09 | Improvements relating to automatic electric circuit-breakers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB244548A true GB244548A (en) | 1925-12-24 |
Family
ID=10203842
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2394424A Expired GB244548A (en) | 1924-10-09 | 1924-10-09 | Improvements relating to automatic electric circuit-breakers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB244548A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2545402A (en) * | 1944-09-07 | 1951-03-13 | Ite Circuit Breaker Ltd | Circuit breaker |
-
1924
- 1924-10-09 GB GB2394424A patent/GB244548A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2545402A (en) * | 1944-09-07 | 1951-03-13 | Ite Circuit Breaker Ltd | Circuit breaker |
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