Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: May 24, 2025
The Johnstown furnaces, Nos. 1, 2, 3 and 4, form one complete plant, with stacks seventy-five feet high, sixteen feet diameter of bosh. Steam is generated in forty boilers, fired by furnace gas, for eight vertical direct-acting blowing engines. Nos. 5 and 6 blast furnaces form together a second plant with stacks seventy-five feet high, nineteen feet diameter of bosh.
The two pistons move simultaneously, and the resistance in the air cylinder rapidly increases as the air is compressed. The early direct-acting compressor used steam at full pressure throughout the stroke.
The cylinders have time to impart to the water jackets the heat produced by compression and are kept cooler. The large air head of the initial cylinder is jacketed, also adding to isothermal economy. This a straight line direct-acting engine, with steam and air pistons connected to a single rod through a crosshead which connects with two fly wheels.
A sixteen horse-power direct-acting winding engine was introduced for hauling up loads at the rate of about one thousand feet per minute, and a twenty-five horse-power geared engine, for hauling up heavier loads at the rate of from six hundred feet to seven hundred feet per minute.
Word Of The Day
Others Looking