GB730396A - Improvements in signalling on railroads - Google Patents

Improvements in signalling on railroads

Info

Publication number
GB730396A
GB730396A GB1999852A GB1999852A GB730396A GB 730396 A GB730396 A GB 730396A GB 1999852 A GB1999852 A GB 1999852A GB 1999852 A GB1999852 A GB 1999852A GB 730396 A GB730396 A GB 730396A
Authority
GB
United Kingdom
Prior art keywords
source
rail
relay
current
lamp
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
GB1999852A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1999852A priority Critical patent/GB730396A/en
Publication of GB730396A publication Critical patent/GB730396A/en
Expired legal-status Critical Current

Links

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
    • B61L1/18—Railway track circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Toys (AREA)

Abstract

730,396. Toy trains. FEINTE, H. Aug. 8, 1952, No. 19998/52. Class 132(3). [Also in Group XXX] A railway signalling system for a railway track with signals normally at danger (see Group XXX) and adaptable for toy railways comprises an L-type impedance chain connected to insulated sections 2a ...2g ... ,Fig. 1, of one rail wherein a line 4 from one pole of a source 5 feeds the parallel arms 6a ... 6g ... (resistances) of the chain, while the series arms are polarized relays 3a ... 3f ... which connect adjacent sections 2a, 2b ...2f, 2g ... the other pole of the source 5 being connected to a continuous rail 1 and the polarized relays being such as to respond only when a sufficiently high current passes therethrough on presence of a train in a section, e.g. 2d, such a current requiring ahead sections i.e. 2e, 2f to be free to clear the entry signal for such ahead section 2e. The signals consist of green and red lamps 10, 11, respectively, Fig. 4, connected in series between the rail 1 and the line 4, a resistance 12 being connected across the green lamp 10. Operation of the relay e.g. 3a to close contact 8a, short circuits the red lamp 11b so that the green lamp 10b receives sufficient current to illuminate it. When the relay is unoperated the current through the green lamp is insufficient for illumination but the current through the red lamp is sufficient for illumination. The polarized relay 3a, &c. on operation also connects power from the source 5 directly to the corresponding section 13a, &c. of the traction rail 13 . The traction power source may be a different source to the source feeding the relays and it may be a D.C. or an A.C. supply, being used at the same time to feed the signal lamps. The resistance 12 may be a relay winding, the relay operating when the red lamp is short circuited to connect up the source of traction power to the corresponding traction rail section 13a, 13b &c. The system may be used for traffic in both directions in which case an individual traction power rail or trolley wire is necessary for each direction.
GB1999852A 1952-08-08 1952-08-08 Improvements in signalling on railroads Expired GB730396A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1999852A GB730396A (en) 1952-08-08 1952-08-08 Improvements in signalling on railroads

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1999852A GB730396A (en) 1952-08-08 1952-08-08 Improvements in signalling on railroads

Publications (1)

Publication Number Publication Date
GB730396A true GB730396A (en) 1955-05-25

Family

ID=10138633

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1999852A Expired GB730396A (en) 1952-08-08 1952-08-08 Improvements in signalling on railroads

Country Status (1)

Country Link
GB (1) GB730396A (en)

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