GB659390A - Improvements in electric relays of the flasher type - Google Patents
Improvements in electric relays of the flasher typeInfo
- Publication number
- GB659390A GB659390A GB33326/49A GB3332649A GB659390A GB 659390 A GB659390 A GB 659390A GB 33326/49 A GB33326/49 A GB 33326/49A GB 3332649 A GB3332649 A GB 3332649A GB 659390 A GB659390 A GB 659390A
- Authority
- GB
- United Kingdom
- Prior art keywords
- armature
- winding
- short
- circuited
- windings
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
- B61L5/12—Visible signals
- B61L5/18—Light signals; Mechanisms associated therewith, e.g. blinders
- B61L5/189—Light signals; Mechanisms associated therewith, e.g. blinders using flashing light sources
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
659,390. Electromagnetic interrupters UNION SWITCH & SIGNAL CO. Dec. 30, 1949, No. 33326. Convention date, Jan. 5. [Class 38(v)] In an electromagnetic interrupter suitable for controlling flashing signals, the time of interruption is varied by varying the reluctance in a magnetic circuit that is in parallel with the armature. In the form shown the core 4 which has a central pole piece 3 and two end pole pieces 1, 2 carries two windings 8, 9 which are arranged in series and alternately short-circuited by the movement of the centrally-pivoted armature 13. This is shown diagrammatically by the switch 21. At starting, the armature occupies a position slightly off centre so that both windings are energized but the winding 9 predominates causing the armature to be attracted to the pole piece 2 and short-circuiting winding 9 so that the armature is then attracted by winding 8 to its other position whereupon winding 8 is short-circuited and so on. Short-circuited coils 7 delay the build up or decay of flux and so influence the timing which can be further influenced by adjusting the air gaps between a magnetic plate 10 and extensions of the two pole pieces 1, 2.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US659390XA | 1949-01-05 | 1949-01-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB659390A true GB659390A (en) | 1951-10-24 |
Family
ID=22066174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB33326/49A Expired GB659390A (en) | 1949-01-05 | 1949-12-30 | Improvements in electric relays of the flasher type |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB659390A (en) |
-
1949
- 1949-12-30 GB GB33326/49A patent/GB659390A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB749316A (en) | Improvements in or relating to electromagnetic relays | |
| GB625531A (en) | Improvements in or relating to electromagnetic relays | |
| GB551433A (en) | Improvements in electromagnetic relays | |
| GB659390A (en) | Improvements in electric relays of the flasher type | |
| GB1182044A (en) | Electro Magnetic Holding Relay | |
| GB559453A (en) | Improvements relating to magnetically operated electrical switches | |
| GB769778A (en) | Polarized electro magnetic relays | |
| FR2251092A1 (en) | Quick action safety relay with direct or alternating current coil - uses air cored disc shaped drive coil with coaxial disc shaped armature coil | |
| GB658130A (en) | Improvements relating to electric relays | |
| GB627723A (en) | Improvements in or relating to electrical timing relays | |
| GB632271A (en) | Relays | |
| GB657164A (en) | Electromagnetic actuator for contactors and like switches | |
| GB1178733A (en) | Magnetic Structures | |
| GB642628A (en) | A circuit breaker with magnetic blow-out for alternating current | |
| GB630531A (en) | Improvements in or relating to instrument type relays | |
| SU104003A1 (en) | Polarized Electromagnetic Relay | |
| GB1261656A (en) | Electromagnetic pulse counter | |
| GB488502A (en) | Improvements relating to electrically-maintained vibrating bodies | |
| GB594862A (en) | Improvement in electromagnetic vibratory interrupters | |
| GB569319A (en) | Improvements relating to electrical relays | |
| GB565471A (en) | Improvements relating to electromagnetic relays | |
| GB626271A (en) | Improvements relating to electrical relays | |
| GB696221A (en) | Improvements in and relating to electro-magnetic time delay tripping units | |
| GB686687A (en) | Improvements in and relating to magnetic relays | |
| GB647843A (en) | Electromagnetic relays |