GB388032A - Improvements in and relating to railway or tramway track, switches, crossings and the like - Google Patents

Improvements in and relating to railway or tramway track, switches, crossings and the like

Info

Publication number
GB388032A
GB388032A GB2212331A GB2212331A GB388032A GB 388032 A GB388032 A GB 388032A GB 2212331 A GB2212331 A GB 2212331A GB 2212331 A GB2212331 A GB 2212331A GB 388032 A GB388032 A GB 388032A
Authority
GB
United Kingdom
Prior art keywords
per cent
railway
crossings
relating
switches
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
GB2212331A
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 GB2212331A priority Critical patent/GB388032A/en
Publication of GB388032A publication Critical patent/GB388032A/en
Expired legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B7/00Switches; Crossings
    • E01B7/10Frogs
    • E01B7/12Fixed frogs made of one part or composite

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

Railway &c. rails are made from a spring-tempered steel which may be manufactured by heating above the recalescent point, say 680-900 DEG C., a steel containing about 0,49 per cent of carbon, and then immersing in a cooling medium. If 1,2 per cent of manganese is added, the carbon should be about 0,45 per cent, and if 0,55 per cent of chromium is added, together with 0,8 per cent manganese, the carbon should be about 0,45 per cent.
GB2212331A 1931-08-04 1931-08-04 Improvements in and relating to railway or tramway track, switches, crossings and the like Expired GB388032A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2212331A GB388032A (en) 1931-08-04 1931-08-04 Improvements in and relating to railway or tramway track, switches, crossings and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2212331A GB388032A (en) 1931-08-04 1931-08-04 Improvements in and relating to railway or tramway track, switches, crossings and the like

Publications (1)

Publication Number Publication Date
GB388032A true GB388032A (en) 1933-02-06

Family

ID=10174265

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2212331A Expired GB388032A (en) 1931-08-04 1931-08-04 Improvements in and relating to railway or tramway track, switches, crossings and the like

Country Status (1)

Country Link
GB (1) GB388032A (en)

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