. Steel rails; their history, properties, strength and manufacture, with notes on the principles of rolling stock and track design . Fig. 99. — Hook Plates, German Experiments on Tie Plates. It is evident that the plate hook, being rigid and incapable of producingany actual pressure against the rail flange, would cause all the stresses to becarried against the screw fastening, and as soon as this would wear in any ofits parts the rail would become loose under the hook, and the shocks would. Fig. 100. — Hook Plates with Clips, German Experiments on Tie Plates. begin their destructive work. Also
. Steel rails; their history, properties, strength and manufacture, with notes on the principles of rolling stock and track design . Fig. 99. — Hook Plates, German Experiments on Tie Plates. It is evident that the plate hook, being rigid and incapable of producingany actual pressure against the rail flange, would cause all the stresses to becarried against the screw fastening, and as soon as this would wear in any ofits parts the rail would become loose under the hook, and the shocks would. Fig. 100. — Hook Plates with Clips, German Experiments on Tie Plates. begin their destructive work. Also, the direct pressure under the head of thespikes would tend to pull these out of the tie, and constitute another elementof weakness to the general construction. The impossibility of fastening the rail with the same amount of holdingpower on both sides, besides the drawbacks enumerated above, led to the intro-duction of an entirely different system of fastening. The first set, or Group 1, of plates are shown in Fig. 101. These plates hada bearing on the ties of 90 square inches as against 80 square inches in thelargest previous plate, and were fastened to the ties by means of four screwspikes absolutely independent of the rail fastening. The rail was in its turn 136 STEEL RAILS fastened to the plate by means of two bolts and clips, these being independentof the tie fastening. The clips were made so as to be capable of adjusting the gage of the trackby being reversible, and also of
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Keywords: ., bookcentury1900, bookdecade1910, bookidsteelrailsth, bookyear1913
