GB447866A - Improvements in or relating to railway and like signalling systems - Google Patents
Improvements in or relating to railway and like signalling systemsInfo
- Publication number
- GB447866A GB447866A GB25448/35A GB2544835A GB447866A GB 447866 A GB447866 A GB 447866A GB 25448/35 A GB25448/35 A GB 25448/35A GB 2544835 A GB2544835 A GB 2544835A GB 447866 A GB447866 A GB 447866A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relay
- contact
- treadle
- counting
- wheel
- 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
- 230000011664 signaling Effects 0.000 title abstract 2
- 230000000694 effects Effects 0.000 abstract 3
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L1/00—Devices along the route controlled by interaction with the vehicle or train
- B61L1/16—Devices for counting axles; Devices for counting vehicles
- B61L1/161—Devices for counting axles; Devices for counting vehicles characterised by the counting methods
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
Abstract
447,866. Railway signalling systems. STANDARD TELEPHONES & CABLES, Ltd., GRIFFITHS, J. B., and BROWN, A., 63, Aldwych, London. Sept. 13, 1935, No. 25448. [Class 105] Railway signals or points are controlled by a single apparatus which counts the axles entering and leaving a section as they pass over only two normally closed treadle contacts at each end of the section, the axles being counted in or out according to the direction of travel, and the arrangement is such that a wheel travelling slowly enough for a reverse movement off the treadle to be possible is counted both in and out if such reverse movement occurs. The Figure shows only the control arrangements for the axle-counting apparatus SAC Counting-in is effected when the normally closed line to terminal " In " is broken and counting-out when the normally closed line to the terminal " Out " is broken. Overlapping treadles X, Y, X<1>, Y<1> are provided at each end of the section. With a wheel entering at the left-hand end of the section the treadle X first opens its contact to drop the relay A ; next the treadle Y opens its contact to drop the relay B and thereafter the treadle X is freed to re-energize the relay A and finally the treadle Y is freed to re-energize the relay B. The relays A, B being overlappingly dropped in that order de-energize a relay AB a contact ab3 of which then opens the line to the terminal " In " to effect a counting-in. The dropping of the relay A opens contact a1 thereby de-energizing the relay AB and so when shortly afterwards the relay B drops and opens its contact b1 a back contact ab2 of the relay AB is already closed and therefore a relay BA remains energized over its stick contact ba1 the relay AB remains de-energized by contact b2 being open when the contact a1 re-closes. If the wheel passes first over treadle Y and then over treadle X the relays B, A are overlappingly dropped in that order and de-energize the relay BA (the relay AB being stuck up over a back contact ba2) and thus a counting-out will be effected by the line to the terminal " Out being opened at contact ba3. The other end of the section is provided with similar relays A<1>, B<1> controlling relays AB<1>, BA<1>, which through contacts ab<1>3, ba<1>3 effect counting- out and counting-in respectively. In order that a wheel moving on to a treadle and then reversing may be properly counted in and out there are provided slow-acting relays AR, BR, AR<1>, BR<1> which are de-energized when the wheel reaches the treadles but only drop. f the wheel remains for a sufficient time on the treadles. Normally therefore these relays AR, BR, AR<1>, BR<1> do not exercise any control but if an entering wheel is moving very slowly over the treadles X, Y, the relay AR will drop and open its front contact arl, but as the quickacting relay AB will already have closed its back contact ab4, which is in parallel with contact ar1, there will not be, at this time, any opening of the line to the terminal " Out." If, however, the wheel reverses and backs out then, when the treadle X is freed, the relay AB will lift before the relay AR lifts and thus the back contact ab4 will open before the front contact arl closes and thus the line to the terminal " Out " will be opened to effect a counting-out. Specification 412,620 is referred to.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB25448/35A GB447866A (en) | 1935-09-13 | 1935-09-13 | Improvements in or relating to railway and like signalling systems |
DE1936I0055907 DE686264C (en) | 1935-09-13 | 1936-09-08 | Axle counting arrangement for railway signal systems that can be driven on in two directions |
US99939A US2182122A (en) | 1935-09-13 | 1936-09-09 | Railway signal control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB25448/35A GB447866A (en) | 1935-09-13 | 1935-09-13 | Improvements in or relating to railway and like signalling systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB447866A true GB447866A (en) | 1936-05-27 |
Family
ID=10227832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB25448/35A Expired GB447866A (en) | 1935-09-13 | 1935-09-13 | Improvements in or relating to railway and like signalling systems |
Country Status (3)
Country | Link |
---|---|
US (1) | US2182122A (en) |
DE (1) | DE686264C (en) |
GB (1) | GB447866A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3169734A (en) * | 1959-04-21 | 1965-02-16 | Fryba Josef | Rail track traffic indicator system |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3144225A (en) * | 1960-03-25 | 1964-08-11 | Int Standard Electric Corp | Arrangement for evaluating the pulses in railway axle-counting systems |
-
1935
- 1935-09-13 GB GB25448/35A patent/GB447866A/en not_active Expired
-
1936
- 1936-09-08 DE DE1936I0055907 patent/DE686264C/en not_active Expired
- 1936-09-09 US US99939A patent/US2182122A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3169734A (en) * | 1959-04-21 | 1965-02-16 | Fryba Josef | Rail track traffic indicator system |
Also Published As
Publication number | Publication date |
---|---|
DE686264C (en) | 1940-01-06 |
US2182122A (en) | 1939-12-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB447866A (en) | Improvements in or relating to railway and like signalling systems | |
US1537569A (en) | Central station for carrier-dispatch systems | |
DE678197C (en) | Train monitoring device with track board and display of train numbers in a main monitoring station | |
DE665795C (en) | Coin telephone with delayed coin return and automatic payment | |
US2021951A (en) | Railway signaling apparatus | |
US1782052A (en) | Train-counting apparatus | |
GB373649A (en) | Improvements in or relating to railway axle counting apparatus | |
DE547584C (en) | Arrangement for switching a sound reproducer from one transmitter to another | |
US2056712A (en) | Railway signaling apparatus | |
US2174253A (en) | Apparatus for the control of highway crossing signals | |
AT103073B (en) | Way signal device. | |
DE941295C (en) | Circuit for automatic signal systems with approach lighting in the railway safety system | |
AT112908B (en) | Switching device for telephone stations connected in parallel. | |
GB352479A (en) | Multi-tariff wheel trains for meters and other counters | |
GB711239A (en) | Improvements in or relating to axle-counting installations | |
US1851474A (en) | Railway signaling track circuits | |
GB482238A (en) | Improvements in or relating to railway signalling systems | |
US2754414A (en) | Protection against momentary loss of track circuit shunt | |
AT127543B (en) | Device for the transmission of a plurality of signals. | |
US1768106A (en) | Device for indicating signals on railway vehicles | |
US2083290A (en) | Automatic signaling system for railways | |
AT147527B (en) | Rail contact devices for level crossings and the like like | |
AU900627A (en) | Improvements in selector switches for automatic telephone systems | |
CH206888A (en) | Light day signal system. | |
AT159154B (en) | Railway signaling system, in particular crossing warning system. |