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 likeInfo
- 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
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B7/00—Switches; Crossings
- E01B7/10—Frogs
- E01B7/12—Fixed 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.
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) |
-
1931
- 1931-08-04 GB GB2212331A patent/GB388032A/en not_active Expired
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