GB592363A - Improvements in electrically operated road traffic signals - Google Patents
Improvements in electrically operated road traffic signalsInfo
- Publication number
- GB592363A GB592363A GB137645A GB137645A GB592363A GB 592363 A GB592363 A GB 592363A GB 137645 A GB137645 A GB 137645A GB 137645 A GB137645 A GB 137645A GB 592363 A GB592363 A GB 592363A
- Authority
- GB
- United Kingdom
- Prior art keywords
- drum
- signal
- lamps
- opening
- road traffic
- 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
- 229920002892 amber Polymers 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000006011 modification reaction Methods 0.000 abstract 1
- 230000002093 peripheral Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/096—Arrangements for giving variable traffic instructions provided with indicators in which a mark progresses showing the time elapsed, e.g. of green phase
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
592,363. Traffic signals. TOWERS, H. E., and HODGES, H. Jan. 17, 1945, Nos. 1376 and 34363. [Class 118 (ii)] In a road traffic control mechanism in which differently coloured lamps are switched on and off automatically in turn for display at one or more signal apertures in a casing, the lamps are arranged behind a drum Q, provided with peripheral numerical signs T and intermittently rotated on a horizontal axis K so that one numeral at a time is illuminated at a signal opening for a predetermined period, e.g. one second, and is then changed instantaneously, the numerals indicating the time remaining before a change of signal. In the form shown the drum is rotated by an electric motor A, having a speed regulator B, through gear C and an arm E contacting pins F projecting from the drum, and is held in its correct rest positions by a spring H acting on a cam-wheel G. Pins M on the drum rotate a gear-wheel N operating a rotary switch O for controlling three pairs of lamps (not shown), i.e. red, amber and green, having a common reflector which focuses the light on to a display opening U. In a modification, a second signal opening may be provided for pedestrians.
Publications (1)
Publication Number | Publication Date |
---|---|
GB592363A true GB592363A (en) | 1947-09-16 |
Family
ID=1626790
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB137645A Expired GB592363A (en) | 1945-01-17 | Improvements in electrically operated road traffic signals |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB592363A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2768365A (en) * | 1952-07-28 | 1956-10-23 | Jones Bayard | Traffic control system |
US2886203A (en) * | 1956-08-01 | 1959-05-12 | Braun Goll Company | Plastic stopper and shield for a tap rod fitting for a barrel |
GB2248136A (en) * | 1990-09-18 | 1992-03-25 | Hassan Siddique | Display timer traffic signal |
-
1945
- 1945-01-17 GB GB137645A patent/GB592363A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2768365A (en) * | 1952-07-28 | 1956-10-23 | Jones Bayard | Traffic control system |
US2886203A (en) * | 1956-08-01 | 1959-05-12 | Braun Goll Company | Plastic stopper and shield for a tap rod fitting for a barrel |
GB2248136A (en) * | 1990-09-18 | 1992-03-25 | Hassan Siddique | Display timer traffic signal |
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