GB203164A - Improvements in or relating to railway signalling systems - Google Patents

Improvements in or relating to railway signalling systems

Info

Publication number
GB203164A
GB203164A GB2233722A GB2233722A GB203164A GB 203164 A GB203164 A GB 203164A GB 2233722 A GB2233722 A GB 2233722A GB 2233722 A GB2233722 A GB 2233722A GB 203164 A GB203164 A GB 203164A
Authority
GB
United Kingdom
Prior art keywords
signal
shoe
valves
current
valve
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
GB2233722A
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.)
Automatic Telephone Manufacturing Co Ltd
Original Assignee
Automatic Telephone Manufacturing 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 Automatic Telephone Manufacturing Co Ltd filed Critical Automatic Telephone Manufacturing Co Ltd
Priority to GB2233722A priority Critical patent/GB203164A/en
Publication of GB203164A publication Critical patent/GB203164A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61LGUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L3/00Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
    • B61L3/02Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

203,164. Automatic Telephone Manufacturing Co., Ltd., and Hudd, A. E. Aug. 16, 1922. Track apparatus for stopping trains.-Pulsating or other composite currents are supplied from fixed track ramps through a collecting shoe, which serves also to remove mechanical restraints from the brake valves, to two electromagnetic restraining means which are responsive to different characteristics of the composite current. Fig. 1 shows the traincarried apparatus which comprises a sliding shoe 1 having a collar 3 coacting with collars on the spring pressed rods 6, 7 to remove these from the bell-crank levers 13, 14 which operate the brake valves 10, 11. The bell-cranks 13, 14 carry the armatures of an alternating current electromagnet 12 and a polarized electromagnet 15. The winding of magnet 12 is in the secondary circuit of a transformer 42, the primary of which, in series with the winding 15, is energized from the track ramps through the shoe 1. Fig. 2 shows the circuits to a home signal ramp 53 and a distant signal ramp 36. At a distant signal the vibrator generator 40 is put in action by a train on an insulated rail section 35, and negative pulsating current is supplied, if the signal is at danger, from the battery 46 to the ramp 36 and the train apparatus. Magnet 12 is energized and holds the valve 10 closed. Magnet 15 releases its armature and the valve 11 is opened by the air pressure and the audible signal 17 is sounded and a service application of the brakes is made. If the distant and home signals are clear, positive pulsating current of greater magnitude is supplied from battery 45 over the lever contacts 44, home signal contacts 43 and distant signal contacts 41, this current preventing the opening of the brake valves and sounding the bell 47. At the home signal, a weak positive pulsating current from part of battery 45 over the vibrator 51 and switch 50 is received if the signal is clear, which restrains the brakes but does not operate the bell 47. If the signal is at danger, no current is received and both valves 10, 11 are opened. The valves 10, 11 may be closed by Bowden or similar mechanism. A retarding device, such as a screw movement 62, is fitted on the emergency brake valve resetting mechanism to ensure the prolonged application of the brake sufficient to stop the train. The resetting mechanisms simultaneously open valves 24, 34 while they are in use thereby ensuring their replacement in order to release the brakes. The shoe 1 is hollow and the cavity is connected to the train pipe by ports 29, a chamber formed by flexible diaphragms 27, 28, and conduit 26. Breakage of the shoe, therefore, causes application of the brakes. The shoe is held in its raised position by detents 21 until the valve is re-set. A collar and pin on the valve stem serve to move the detents into and out of operative position.
GB2233722A 1922-08-16 1922-08-16 Improvements in or relating to railway signalling systems Expired GB203164A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2233722A GB203164A (en) 1922-08-16 1922-08-16 Improvements in or relating to railway signalling systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2233722A GB203164A (en) 1922-08-16 1922-08-16 Improvements in or relating to railway signalling systems

Publications (1)

Publication Number Publication Date
GB203164A true GB203164A (en) 1923-09-06

Family

ID=10177756

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2233722A Expired GB203164A (en) 1922-08-16 1922-08-16 Improvements in or relating to railway signalling systems

Country Status (1)

Country Link
GB (1) GB203164A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103043074A (en) * 2012-12-24 2013-04-17 青岛四方车辆研究所有限公司 Emergency valve for high-speed motor train units and urban rail transit vehicles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103043074A (en) * 2012-12-24 2013-04-17 青岛四方车辆研究所有限公司 Emergency valve for high-speed motor train units and urban rail transit vehicles

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