. The Street railway journal . FIG 15.—STANDARD TWELVE BOLT CHANNEL JOINT. chairs, in order to reach the ties placed just underneaththe paving blocks, the latter being generally cut fromseven to nine inches deep. To-day, however, chair con-struction is entirely abandoned. Chairs were found tooweak to withstand the heavy traffic, particularly at thejoints, which were rapidly battered down in most cases,so that they could be felt by the cars after a compara-tively short period oi service. Substantially all the newconstruction to-day is with the rails spiked directly to theties, the height of the
. The Street railway journal . FIG 15.—STANDARD TWELVE BOLT CHANNEL JOINT. chairs, in order to reach the ties placed just underneaththe paving blocks, the latter being generally cut fromseven to nine inches deep. To-day, however, chair con-struction is entirely abandoned. Chairs were found tooweak to withstand the heavy traffic, particularly at thejoints, which were rapidly battered down in most cases,so that they could be felt by the cars after a compara-tively short period oi service. Substantially all the newconstruction to-day is with the rails spiked directly to theties, the height of the rail depending upon the dimensionsof the paving blocks. The greater part of the purchasesare of eight and one-half to nine inch, deep girder rails,weighing eighty-five to ninety-five pounds to the yard,but in the smaller towns six, seven and eight inch railsare often purchased, the weight varying from sixty toeighty pounds per yard. Fig. 3. shows an 83^ inch,ninety-three pound rail, recently designed for metro-. FIG 18.—MANGANESE STEEL FROG. politan traffic of an unusually severe type, and whichis believed to be adapted for the heaviest character ofwork found in American cities. Fig. 4 is a rail withstiff and well designed channel joints. Fig. 5 is theBuffalo self-cleaning grooved rail. But Figs. 2 and3 are more generally popular. Fig. i shows a ten inchrail, of which a little only has yet been rolled, and repre-sents an extreme in the desire for great depth andstrength. Fig. 7 represents a seven inch T rail, of whichquite a little is being used, particularly in Western goes without saying that T rail sections are preferred by street railway managers in all cases where the neces-sary permission can be obtained from municipalities, andthe latter are coming to recognize the fact that it is quitepossible to so pave to the T rail that there is no difficultywith the vehicular traffic in turning out of the tracks, andthat the burden of this character of traffic should
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
