. Railway track and track work . D Fig. 39.—Rail Fastenings, Spikes and ins. and terminating in a blunt chisel edge. Sijikes of greater length are rarelyused, except with shims. Spikes weigh about j-lb. and are put up in kegs of2C0 lbs. A keg contains about 450 to 475 spikes AX5 ins., or 3G0 to 375 spikes^XSj ins., the length being measured under the head. They have usuallyrough surfaces and blunt points, which crush and tear the fibers of the wood toa degree depending in part on care in driving. A great improvement may beeffected by the use of spikes having clean and even (not smooth
. Railway track and track work . D Fig. 39.—Rail Fastenings, Spikes and ins. and terminating in a blunt chisel edge. Sijikes of greater length are rarelyused, except with shims. Spikes weigh about j-lb. and are put up in kegs of2C0 lbs. A keg contains about 450 to 475 spikes AX5 ins., or 3G0 to 375 spikes^XSj ins., the length being measured under the head. They have usuallyrough surfaces and blunt points, which crush and tear the fibers of the wood toa degree depending in part on care in driving. A great improvement may beeffected by the use of spikes having clean and even (not smooth) surfaces, sharpedges and sharp points, so that tlie fibers will not be torn, but will be cut by thesharp point, and pressed back and downward by the body of the spike. Thefibers thus tightly compressed, with their ends slightly bent down against thefaces of the spike, ofTer a strong resistance to pulling and tend to prevent theentrance of water. Various forms of spikes have been devised, some with 90 TRACK. twisted, grooved or jagged faces, but extensive experiments have pr
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Keywords: ., bookcentury1900, bookdecade1900, books, booksubjectrailroadtracks
