GB168021A - Improvements relating to three-position electric relays - Google Patents
Improvements relating to three-position electric relaysInfo
- Publication number
- GB168021A GB168021A GB32609/20A GB3260920A GB168021A GB 168021 A GB168021 A GB 168021A GB 32609/20 A GB32609/20 A GB 32609/20A GB 3260920 A GB3260920 A GB 3260920A GB 168021 A GB168021 A GB 168021A
- Authority
- GB
- United Kingdom
- Prior art keywords
- armature
- relay
- contact
- current
- arm
- 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)
- Lock And Its Accessories (AREA)
Abstract
168,021. Kendall, A. B. Aug. 18, 1920, [Convention date]. Electromagnetic switches; locking and unlocking.-A three-position relay carried by a locomotive is provided with separate electromagnetic locking means to hold the contact member in the central neutral position against vibration, release of the lock being effected by the current which operates the relay, and with gravity returning mechanism. As shown in Fig. 1, the wound armature carries a disc 9 notched at 10 and provided with a crank arm pivoted to a connecting- rod 17 extending to the contact arm 18 which carries contacts 19, 20 co-operating with fixed contacts 21, 22. Normally, the parts assume the position shown with the spring-mounted armature 12 engaging the disc and locking the contact arm. When current is supplied through the relay armature it passes also through the electromagnet 15 and raises the catch, subsequently rotating the armature and maintaining the contact as long as the relay is energized. In its rotation the armature raises, by means of a segmental projection 29 carried thereby a U. shaped weight 34 guided by a roller 37, and as soon as the current is cut off the weight restones the contact-arm to the neutral position. Adjustable stops 33 act in conjunction with the projection 30 to limit the movement.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US168021XA | 1920-08-18 | 1920-08-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB168021A true GB168021A (en) | 1922-02-20 |
Family
ID=21779046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32609/20A Expired GB168021A (en) | 1920-08-18 | 1920-11-18 | Improvements relating to three-position electric relays |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB168021A (en) |
-
1920
- 1920-11-18 GB GB32609/20A patent/GB168021A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB555451A (en) | Improvements in and relating to electromagnetic relays | |
| GB168021A (en) | Improvements relating to three-position electric relays | |
| GB563835A (en) | Improvements in and relating to means for preventing bouncing of electric switch contacts | |
| GB187993A (en) | Improvements in and relating to electric switches | |
| GB627723A (en) | Improvements in or relating to electrical timing relays | |
| US2078147A (en) | Electric control device | |
| GB536524A (en) | Improvements in electromagnetically-operated electric switches | |
| GB350582A (en) | Improvements relating to electric relays for switch control | |
| GB250976A (en) | Improvements in electromagnetic operating means for electric motor controllers and switches | |
| GB702790A (en) | Improvements in and relating to electro-magnetic relays | |
| GB546266A (en) | Improvements in and relating to electromagnetic switches, particularly for use as starting relays for alternating current motors | |
| GB267502A (en) | Improved electro-magnetically operated switches | |
| US2414432A (en) | Timing device | |
| GB663331A (en) | Improvements in electrical relays or contactors | |
| GB219946A (en) | Make-and-break switch for electric current | |
| GB532441A (en) | Improvements in or relating to time-element electric relays | |
| GB296871A (en) | A timing or retarding device for use in connection with relay starters or controllers for electric motors | |
| GB371127A (en) | Improvements in or relating to control apparatus for electric motors | |
| GB906862A (en) | Improvements in or relating to machinery safety devices | |
| GB270843A (en) | Electromagnetic relays | |
| GB672778A (en) | Improvements in or relating to eddy-current switches for controlling electric motors | |
| GB515473A (en) | Improvements in or relating to time element electric relays | |
| GB526824A (en) | Improvements in and relating to time controlled relays for railway signalling and the like | |
| GB386717A (en) | Improvements in electromagnetic switches or relays | |
| GB191117142A (en) | Improvements in and relating to Electro Magnetically Operated Switches. |