. Steel rails; their history, properties, strength and manufacture, with notes on the principles of rolling stock and track design . Fig. 98. — Plain Bearing Plates, German Experiments on Tie Plates. and inefficiency of the structure (Figs. 98 c and d). The hook plate, shownin Fig. 99 a, was next tried. The hook, which was made to hold the outsideflange of the rail, necessitated a plate somewhat longer on the outside than onthe gage side, resulting in an uneven distribution of pressure on the wood anda condition as shown in Fig. 99 h. The bending of the screw spikes observedin thii case was at
. Steel rails; their history, properties, strength and manufacture, with notes on the principles of rolling stock and track design . Fig. 98. — Plain Bearing Plates, German Experiments on Tie Plates. and inefficiency of the structure (Figs. 98 c and d). The hook plate, shownin Fig. 99 a, was next tried. The hook, which was made to hold the outsideflange of the rail, necessitated a plate somewhat longer on the outside than onthe gage side, resulting in an uneven distribution of pressure on the wood anda condition as shown in Fig. 99 h. The bending of the screw spikes observedin thii case was at first thought to be due to the lack of support of the head ofthe spikes on the far side from the rail flange, and. to remedy this supposeddefect, rail clips were introduced, giving the head of spikes a full support all SUPPORTS OF THE RAIL 135 around (Fig. 100 a). This arrangement proved to be much better than anyprevious one, but still did not produce a satisfactory fastening. Fig. 100 b indi-cates clearly the manner of failure of these 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
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Keywords: ., bookcentury1900, bookdecade1910, bookidsteelrailsth, bookyear1913
