First Series of Railway Practice a Span Classsearchtermspan Classsearch
First Series of Railway Practice a Span Classsearchtermspan Classsearch
Samuel Charles Brees
The book First Series of Railway Practice a Span Classsearchtermspan Classsearch was written by author Samuel Charles Brees Here you can read free online of First Series of Railway Practice a Span Classsearchtermspan Classsearch book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is First Series of Railway Practice a Span Classsearchtermspan Classsearch a good or bad book?
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This changing place is furnished with check rails; and arranged in such a manner that, notwithstanding whatever position the switch may be in, the trains will not leave the line. It is composed of two pair of rails, R R', S S', each being set at a uniform 224 distance of 4" 50 apart, or (4 feet 11 inches from centre to centre, ) and fixed in chairs of a particular form, M N P, (See Plate 18. ) The two guard-rails, D and D', are bound immoveably together by means of an iron rod E, and turn in th...e chairs H round the bolts h h. They receive an alternating movement horizontally, by means of a cranked axle enclosed in a box, which communicates with them by a rod F. They are pressed at one time against the rail S, and at another against the rail K, accordingly as the train is required to be directed upon the rails E R', or upon the rails S S. The switch-box is found hollow in the form of a half column, and incloses a qirank placed upright upon its axle, and which is connected with the rod F.
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