GB365310A - Improvements relating to traffic control apparatus - Google Patents
Improvements relating to traffic control apparatusInfo
- Publication number
- GB365310A GB365310A GB93531A GB93531A GB365310A GB 365310 A GB365310 A GB 365310A GB 93531 A GB93531 A GB 93531A GB 93531 A GB93531 A GB 93531A GB 365310 A GB365310 A GB 365310A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- station
- switch
- coil
- motor
- 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
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
- G08G1/081—Plural intersections under common control
- G08G1/082—Controlling the time between beginning of the same phase of a cycle at adjacent intersections
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Traffic Control Systems (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
365,310. Road signals for controlling traffic. CHANCE BROS. & CO., Ltd. and SPAINK, J. H. ABBINK-, Lighthouse Works, West Smethwick, Staffordshire. Jan. 10, 1931, Nos. 935 and 2006. [Class 118 (ii).] In traffic control apparatus of the kind in which a number of electrically operated signal stations are interconnected, synchronizing mechanism is provided whereby the cycle of operations at any station cannot be repeated until after the completion of the corresponding cycles in the other stations. Each signal station has an electric motor m<1>, m<2>, &c. controlling signal lamps which are all connected in parallel with the same supply terminals l<1>, l<2>, and a rotary contact device c<1>, c<2>, &c. is provided at each station which at predetermined intervals closes the circuit of an operating coil adapted to cause a switch in the motor circuit to be opened and another switch in a synchronizing circuit t common to all the stations to be closed, means dependent on the closing of the synchronizing circuit serving to restart the motors. The operating coil and the two switches associated therewith are all marked s<1>, s<2> in the two stations illustrated. When all the switches s<1>, s<2> in the synchronizing circuit have been closed, the coil of a contactor r<2> in the last station is energized to close a switch r<2> in a byepass of the motor circuit of the last station to be closed, thereby enabling that motor to be restarted. At the same time this coil also closes a switch r<2> in the circuit containing the coil r<1>, which closes a switch r<1> in a byepass of the circuit containing the motor m<1>. Also the coil r<2> closes a switch r<2> in a branch circuit in the last station containing a switch d which by a device operated by the motor m<2> is held closed sufficiently long to keep the coil r<2> in action until all the motors have been restarted. By the motion of the motors the contacts c<1>, c<2> are caused to open the circuits containing the contactor coils s<1>, s<2>, thereby allowing the motor circuit switches s<1>, s<2> to be reclosed by springs, and causing the switches s<1>, s<2> in the synchronizing circuit to be re-opened. Contactor coils and switches t<1>, t<2> are provided to enable the system to continue to work in the event of failure of the signals at any station, a warning lamp w indicating that station. The contacts c<1>, c<2> may operate two or more times in each cycle, if necessary. Specification 354,036 is referred to in the Provisional Specification.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB93531A GB365310A (en) | 1931-01-10 | 1931-01-10 | Improvements relating to traffic control apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB93531A GB365310A (en) | 1931-01-10 | 1931-01-10 | Improvements relating to traffic control apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB365310A true GB365310A (en) | 1932-01-21 |
Family
ID=9713096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB93531A Expired GB365310A (en) | 1931-01-10 | 1931-01-10 | Improvements relating to traffic control apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB365310A (en) |
-
1931
- 1931-01-10 GB GB93531A patent/GB365310A/en not_active Expired
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