GB406285A - Improvements in methods and devices for traffic signalling - Google Patents

Improvements in methods and devices for traffic signalling

Info

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
Application number
GB2339532A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JOHN LEWIS BARTON JAYNE
Original Assignee
JOHN LEWIS BARTON JAYNE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JOHN LEWIS BARTON JAYNE filed Critical JOHN LEWIS BARTON JAYNE
Priority to GB2339532A priority Critical patent/GB406285A/en
Publication of GB406285A publication Critical patent/GB406285A/en
Expired legal-status Critical Current

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.
GB2339532A 1932-08-20 1932-08-20 Improvements in methods and devices for traffic signalling Expired GB406285A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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

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