GB406285A - Improvements in methods and devices for traffic signalling - Google Patents
Improvements in methods and devices for traffic signallingInfo
- Publication number
- GB406285A GB406285A GB2339532A GB2339532A GB406285A GB 406285 A GB406285 A GB 406285A GB 2339532 A GB2339532 A GB 2339532A GB 2339532 A GB2339532 A GB 2339532A GB 406285 A GB406285 A GB 406285A
- Authority
- GB
- United Kingdom
- Prior art keywords
- springs
- contacts
- circuit
- relay
- pad
- 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
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/02—Detecting movement of traffic to be counted or controlled using treadles built into the road
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/14—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for operation by a part of the human body other than the hand, e.g. by foot
- H01H3/141—Cushion or mat switches
- H01H3/142—Cushion or mat switches of the elongated strip type
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Traffic Control Systems (AREA)
Abstract
406,285. Road signals for controlling traffic. JAYNE, J. L. B., 504, Portland Road, Hove, Sussex. Aug. 20, 1932, No. 23395. [Class 118 (ii).] The road pad for a vehicle operated traffic control system has a number of control devices connected in parallel across the width of the mat so that at least one of the devices is operated no matter where the pad is depressed. The various devices may be linked by link bars and two sets of devices may be provided to give directional sense to the pad. As shown in Fig. 5, the pad carries a number of springs 23 which make contact between electric mains 13, 14 and a further number of springs 22 which can connect mains 14, 15. The springs are covered by a flexible cover and a protective grid 28 is placed between the insulating base carrying the contacts and the cover to prevent undue pressure on the springs. The springs may be linked by link bars 35. The set of springs 23 are provided only if a directional sense is required and where such springs are used a relay circuit as shown in Fig. 6 is provided. When a vehicle is travelling in the direction of the arrow, contacts 21, 22 close before contacts 23, 19. Relay 39 operates opening the circuit of relay 38 and closing the circuit to the control apparatus 46. Should contacts 23, 19 be closed first, relay 38 operates to open the circuit of 39, a dashpot 47 being provided to maintain the circuit open for a sufficient time to allow the vehicle to pass over contacts 22. Specification 402,446 is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2339532A GB406285A (en) | 1932-08-20 | 1932-08-20 | Improvements in methods and devices for traffic signalling |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2339532A GB406285A (en) | 1932-08-20 | 1932-08-20 | Improvements in methods and devices for traffic signalling |
Publications (1)
Publication Number | Publication Date |
---|---|
GB406285A true GB406285A (en) | 1934-02-20 |
Family
ID=10194911
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2339532A Expired GB406285A (en) | 1932-08-20 | 1932-08-20 | Improvements in methods and devices for traffic signalling |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB406285A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2813163A (en) * | 1954-09-30 | 1957-11-12 | Nat Pneumatic Co Inc | Heavy duty treadle |
US3036182A (en) * | 1946-01-05 | 1962-05-22 | Itt | Electric switch |
US3308253A (en) * | 1965-03-25 | 1967-03-07 | Ibm | Diaphragm switch having a diaphragm supported on an incompressible layer and an elastomer overlaying the diaphragm |
-
1932
- 1932-08-20 GB GB2339532A patent/GB406285A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3036182A (en) * | 1946-01-05 | 1962-05-22 | Itt | Electric switch |
US2813163A (en) * | 1954-09-30 | 1957-11-12 | Nat Pneumatic Co Inc | Heavy duty treadle |
US3308253A (en) * | 1965-03-25 | 1967-03-07 | Ibm | Diaphragm switch having a diaphragm supported on an incompressible layer and an elastomer overlaying the diaphragm |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB670095A (en) | Audio-frequency signalling arrangements for automatic telephone systems | |
GB406285A (en) | Improvements in methods and devices for traffic signalling | |
GB417636A (en) | Improvements in or relating to electric circuit interrupters | |
GB407780A (en) | Improvements relating to the reduction of sparking at contacts in making and breaking electric circuits | |
GB360924A (en) | Improvements in traffic control systems | |
GB363405A (en) | An improved rail contact for use in connection with railway signalling | |
GB350814A (en) | Improvements in or relating to annunciators | |
GB240520A (en) | Improvements in or relating to apparatus for giving warning when landslips, floods or other obstructions occur on railway or other tracks | |
GB275694A (en) | Improvements in road-traffic signalling systems | |
US1698812A (en) | Electric signaling controlled by mechanical vibrations | |
GB211738A (en) | Improvements in and relating to an electrical automatic road signal device for crossroads and turnings | |
GB292993A (en) | Improvements in and relating to electric signal and control systems | |
GB307385A (en) | Improvements in or relating to electric switches suitable for use in controlling thetransmission of signalling or operating currents in an electrical remote control system | |
GB394919A (en) | Improved means for securing electrical contact blades in position | |
GB393140A (en) | Improvements in pressure-operated movable contactors for use with automatic traffic-control systems involving electrical circuits | |
FR699547A (en) | Interlocking device between a control wheel, circuit breaker, switch, etc. and an electric circuit | |
GB398877A (en) | Improvements in or relating to electric signalling systems | |
GB391446A (en) | Improvements in automatic telephone systems | |
GB1112573A (en) | Improvements in or relating to polarised relay circuits and to electrical traffic analysers using such circuits | |
GB233438A (en) | Improvements in and relating to the control of electrically operated switches | |
GB245502A (en) | Improvements in and connected with auxiliary lighting circuits for electric train lighting installations | |
GB191402595A (en) | Improvements in Signalling Systems. | |
GB307515A (en) | Improvements in electric supervisory arrangements for remote control systems | |
FR640102A (en) | Contact device for electrical switches, distributors, breakers and similar electrical equipment | |
GB383639A (en) | Improvements in or relating to electrical rectifying plant |