GB488437A - Improvements in or relating to traffic actuated apparatus - Google Patents

Improvements in or relating to traffic actuated apparatus

Info

Publication number
GB488437A
GB488437A GB232037A GB232037A GB488437A GB 488437 A GB488437 A GB 488437A GB 232037 A GB232037 A GB 232037A GB 232037 A GB232037 A GB 232037A GB 488437 A GB488437 A GB 488437A
Authority
GB
United Kingdom
Prior art keywords
lever
operated
group xxxviii
contact
slow
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
GB232037A
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.)
HUBERT JOHN NAPIER RIDDLE
JOHN PASTON GREEN
Siemens and General Electric Railway Signal Co Ltd
Original Assignee
HUBERT JOHN NAPIER RIDDLE
JOHN PASTON GREEN
Siemens and General Electric Railway Signal Co Ltd
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 HUBERT JOHN NAPIER RIDDLE, JOHN PASTON GREEN, Siemens and General Electric Railway Signal Co Ltd filed Critical HUBERT JOHN NAPIER RIDDLE
Priority to GB232037A priority Critical patent/GB488437A/en
Publication of GB488437A publication Critical patent/GB488437A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

488,437. Retractive switches. SIEMENS & GENERAL ELECTRIC RAILWAY SIGNAL CO., Ltd., GREEN, J. P., and RIDDLE, H. J. N. Jan. 26, 1937, No. 2320. [Class 38 (v)] [Also in Group XXXVIII] To differentiate in road-traffic signalling apparatus, between fast and slow vehicles, the member operated, e.g. pneumatically, from the road pad is connected resiliently with a slow-to-move contact-maker. Thus, in the type of contact box described in Specification 415,200, [Group XXXVIII], and as shown, the pressure-operated plate 7 fixed at 16 is connected by a spring 24 with a lever 23 pivoted centrally and provided at each end with a weight 26. If the plate is operated by a quickly-moving vehicle, no appreciable displacement of the lever results, but if the operation is prolonged due to the vehicle moving slowly, the lever rocks sufficiently to close a circuit either by ordinary contact abutment or by a mercury switch carried by the lever. Specifications 400,340, 406,993, and 487,398, [all in Group XXXVIII], also are referred to.
GB232037A 1937-01-26 1937-01-26 Improvements in or relating to traffic actuated apparatus Expired GB488437A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB232037A GB488437A (en) 1937-01-26 1937-01-26 Improvements in or relating to traffic actuated apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB232037A GB488437A (en) 1937-01-26 1937-01-26 Improvements in or relating to traffic actuated apparatus

Publications (1)

Publication Number Publication Date
GB488437A true GB488437A (en) 1938-07-07

Family

ID=9737474

Family Applications (1)

Application Number Title Priority Date Filing Date
GB232037A Expired GB488437A (en) 1937-01-26 1937-01-26 Improvements in or relating to traffic actuated apparatus

Country Status (1)

Country Link
GB (1) GB488437A (en)

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