GB818172A - Improvements in or relating to electromagnetic relays - Google Patents
Improvements in or relating to electromagnetic relaysInfo
- Publication number
- GB818172A GB818172A GB3225054A GB3225054A GB818172A GB 818172 A GB818172 A GB 818172A GB 3225054 A GB3225054 A GB 3225054A GB 3225054 A GB3225054 A GB 3225054A GB 818172 A GB818172 A GB 818172A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plunger
- coil
- latch
- spring
- switch
- 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
- H01H51/00—Electromagnetic relays
- H01H51/02—Non-polarised relays
- H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
- H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
- H01H51/10—Contacts retained open or closed by a latch which is controlled by an electromagnet
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Abstract
818,172. Electrically-tripped switches; electromagnetic switches. REYROLLE & CO. Ltd., A. Nov. 7, 1955 [Nov. 8, 1954], No. 32250/54. Class 38 (5). Energization of a coil C attracts an armature A<SP>1</SP> on the upper end of a vertical shaft A towards a magnet core C<SP>2</SP> against the action of a return spring A<SP>5</SP> connected at one end to an arm A<SP>4</SP> on the shaft, whereby a number of pinlike bridging contacts D carried by spring arms A<SP>3</SP> on the shaft make or break contact with respective pairs of fixed contact pins D<SP>1</SP>, D<SP>2</SP>. The shaft A is held in its operated position on de-energization of the coil C by a projection G4 on a latch G, pivoted at G<SP>1</SP>, which moves from its normal position, Fig. 8, to its latching position, Fig. 9, under the action of a spring G3 upon movement of the arm A<SP>4</SP> to its operated position. Movement of the latch G to its latching position releases a plunger F<SP>1</SP> which drops a limited distance and locks the latch, thus preventing undesired tripping of the switch due to shock. As shown, this dropping of the plunger also de-energizes the coil C by striking a lever E<SP>3</SP> pivoted at E4 and biased by a spring E<SP>5</SP>, the lever carrying a bridging contact E co-operating with fixed contacts E<SP>1</SP> connected in the coil circuit. The switch may be electrically tripped, in which instance the plunger Fl and latch G are magnetic and the plunger is surrounded by a tripping coil F having a yoke F<SP>2</SP>, F3, energization of the coil F causing the plunger to be raised, whereupon the latch is attracted to the yoke and the arm A<SP>4</SP> is returned by the spring A<SP>6</SP>. In another construction, the yoke F<SP>2</SP>, F<SP>3</SP> is omitted and the upper end of the plunger engages the latch to trip the switch. Further, the coil F may also be omitted (Figs. 5-7, 10, 11, not shown) and the plunger raised manually by means of a handle to trip the switch.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3225054A GB818172A (en) | 1955-11-08 | 1955-11-08 | Improvements in or relating to electromagnetic relays |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3225054A GB818172A (en) | 1955-11-08 | 1955-11-08 | Improvements in or relating to electromagnetic relays |
Publications (1)
Publication Number | Publication Date |
---|---|
GB818172A true GB818172A (en) | 1959-08-12 |
Family
ID=10335676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3225054A Expired GB818172A (en) | 1955-11-08 | 1955-11-08 | Improvements in or relating to electromagnetic relays |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB818172A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022175299A1 (en) * | 2021-02-16 | 2022-08-25 | Schaltbau Gmbh | Electric switching device with locking function |
-
1955
- 1955-11-08 GB GB3225054A patent/GB818172A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022175299A1 (en) * | 2021-02-16 | 2022-08-25 | Schaltbau Gmbh | Electric switching device with locking function |
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