. The trackman's helper, a handbook for track foremen, supervisors and engineers . spike is crowded backwards in the hole and therails have a chance to spread. In short, there shouldbe no re-enforcement on the neck of a spike. Tendency of rail to work into face of tie. Whenthe spike is slightly higher than its normal positionin the tie, the rail has an opportunity to act on thetie more than otherwise. This action partakes ofthree different forms: 1. A straight pressure downwards. EFFECTS OF WAVE MOTION OF RAIL 161 2. A lateral pressure. 3. A resultant of these two. Wear of spikes. The rail has
. The trackman's helper, a handbook for track foremen, supervisors and engineers . spike is crowded backwards in the hole and therails have a chance to spread. In short, there shouldbe no re-enforcement on the neck of a spike. Tendency of rail to work into face of tie. Whenthe spike is slightly higher than its normal positionin the tie, the rail has an opportunity to act on thetie more than otherwise. This action partakes ofthree different forms: 1. A straight pressure downwards. EFFECTS OF WAVE MOTION OF RAIL 161 2. A lateral pressure. 3. A resultant of these two. Wear of spikes. The rail has an opportunity towork up and down, wearing the neck of the spike. Fig. 26. The P. & M. Anti Rail-CreeperTwo Simple Parts—No Bolts The same action takes place when a spike is not drivenproperly. Wear of rails. When a rail is unduly canted allthe running is done on one side of the head, and, con-sequently, this is where the surface wear takes place. 162 THE TRACKMANS HELPER Creeping rails. Creeping is caused by the yndula-tory motion, and is very destructive to track. Mot. Fig. 27. The Dinklage Creep Check only does it buckle the joints and tear apart the bolts,but also disturbs the ties, especially those at the joints,md displaces the ballast. Thi^ is arrested m part by EFFECTS OF WAVE MOTION OF RAIL 163 the slot holes in the angle bar, but anchors of somesort should be used in addition. Many devices forthis purpose are on the market, a number of whichare illustrated in Figs. 26 to 29 inclusive. In stoneballast, tamping ties on the leaving side materiallyassists, as well as driving the outside spikes on theleaving side. Rail creeping. Mr. G. Van Zandt published, in
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