. The trackman's helper, a handbook for track foremen, supervisors and engineers . strikeHere StrikeHere. Fig. 29. The Holdfast Rail Anchor164 EFFECTS OF WAVE MOTION OF RAIL 165 regard to this movement with theories accounting forthe action. Rail creeping has been found to assume aston-ishing proportions and to cause a large number ofwrecks in some localities. An incident often quotedin this connection is given by Mr. Thomas Keefer ofthe Canadian Pacific Ry. (Am. Soc. C. E. XIX. 1888)who witnessed a movement of over two feet with thepassage of a single train over a muskeg or swampylocality. In
. The trackman's helper, a handbook for track foremen, supervisors and engineers . strikeHere StrikeHere. Fig. 29. The Holdfast Rail Anchor164 EFFECTS OF WAVE MOTION OF RAIL 165 regard to this movement with theories accounting forthe action. Rail creeping has been found to assume aston-ishing proportions and to cause a large number ofwrecks in some localities. An incident often quotedin this connection is given by Mr. Thomas Keefer ofthe Canadian Pacific Ry. (Am. Soc. C. E. XIX. 1888)who witnessed a movement of over two feet with thepassage of a single train over a muskeg or swampylocality. In many cases it is reported to have movedaround sharp curves and to have straightened out onthe following tangent or reversed on a following curve. The results to the track are well known to track-men who have to continually combat this movement/ says Mr. Camp (Am. Soc. C. ), causes trouble and expense in many ways. Itshoves joint ties off their tamped beds upon looseballast; frogs are crowded out of alignment, andwrecks are not infrequent from such causes. Sig-nals and switches are
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