. The street railway review . in theaccompanying diagram. The machine is then run back 10or 12 ft. clear of the face and the shield is pumped forward,the cutting-edge bringing down the earth not touched bythe excavator. This insures a clean cut and no iron lining is next erected and bolted up and the ex-cavator is again set to work. While the machine is not aslarge or heavy as experience shows would be desirable, theonly stoppages have been due to the breaking of it is, the saving over hand-labor is very considerable, andan average advance of three 2oin. rings is made i
. The street railway review . in theaccompanying diagram. The machine is then run back 10or 12 ft. clear of the face and the shield is pumped forward,the cutting-edge bringing down the earth not touched bythe excavator. This insures a clean cut and no iron lining is next erected and bolted up and the ex-cavator is again set to work. While the machine is not aslarge or heavy as experience shows would be desirable, theonly stoppages have been due to the breaking of it is, the saving over hand-labor is very considerable, andan average advance of three 2oin. rings is made in 10 hours,with eight men at the face, including the machine operator. A PECULIAR ACCIDENT. May 26 a workman on the South Side Elevated, Chicago,dropped a tool which made electrical connection betweenthe third rail and a large gas pipe carried on the hole was burned in the pipe and the gas ignited. The firedepartment was called out and traffic between the down-town terminus and 33d street was blocked for over two.
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
