GB218341A - Train position or progress indicators - Google Patents

Train position or progress indicators

Info

Publication number
GB218341A
GB218341A GB296823A GB296823A GB218341A GB 218341 A GB218341 A GB 218341A GB 296823 A GB296823 A GB 296823A GB 296823 A GB296823 A GB 296823A GB 218341 A GB218341 A GB 218341A
Authority
GB
United Kingdom
Prior art keywords
pulleys
cords
discs
speeds
frames
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
GB296823A
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 GB296823A priority Critical patent/GB218341A/en
Publication of GB218341A publication Critical patent/GB218341A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Stringed Musical Instruments (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

218,341. Parsons, I. H. Feb. 1, 1923. Variable-speed gearing. - In a board for indicating the positions and movements of a number of trains, the lines are represented by cords and the speeds of the cords are made proportional to the speeds of the appropriate trains by providing pulleys which are of different sizes and have adjustable diameters. Each pulley comprises a disc M, Fig. 5, fixed on the shaft H<6> and an adjustable disc N, these discs being formed with interlacing teeth M<1>, N<1>, and kept apart by springs M<3>. In the case of the larger pulleys, the discs are held together by nuts M<5> having wide flanges M<6> which project beyond the edges of the pulleys and are provided with graduation marks at their peripheries. In the smaller pulleys, a single nut M<5> is employed and is threaded on to the hub M<2>. The cords are kept taut by jockey pulleys such as J<1>, J<2>, Fig. 7, which are mounted in frames J<3>, J<4>, on axles J<5> the ends of which slide in slotted guides J<6>. The frames J<3>, J<4> are attached to tensioning cords J<7>, J<8>, which terminate in weights after passing over further pulleys.
GB296823A 1923-02-01 1923-02-01 Train position or progress indicators Expired GB218341A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB296823A GB218341A (en) 1923-02-01 1923-02-01 Train position or progress indicators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB296823A GB218341A (en) 1923-02-01 1923-02-01 Train position or progress indicators

Publications (1)

Publication Number Publication Date
GB218341A true GB218341A (en) 1924-07-01

Family

ID=9749406

Family Applications (1)

Application Number Title Priority Date Filing Date
GB296823A Expired GB218341A (en) 1923-02-01 1923-02-01 Train position or progress indicators

Country Status (1)

Country Link
GB (1) GB218341A (en)

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