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PRINCETON UNIVERSITY

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THE TECHNICAL
WORLD MAGAZINE
Volume IX MARCH, 1908 No. 1

Volume IX

MARCH, 1908

No. 1

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PLUCKING TWO MILLIONS OUT OF THE AIR

By H. G. HUNTING

Sasba

RACTICALLY to pick twenty-five horses was generated—and

a hundred thousand wasted. Unrecognized, hundreds of horse-power off the thousands of horse-power, that might tops of eight roaring have moved the machinery of half the blast-furnaces and to crafts that cluster around the most useuse it in performing a ful of the metals, was lost in green and hundred giant tasks, is yellow fire-works, before men began to

the purpose of co- see. Now, by a process that has been lossal apparatus now being installed in a growth, but which has only just the wonderful steel plant building at reached perfection, the gas is preserved Gary, Indiana. By means of a hereto- and used, and the wheels of the whole fore unthought of extension of the use of great industry of steel-making will presthe blast-furnace gas, the Indiana Steel ently turn before its power alone. Company will save and put to work a At the mills of the Indiana Steel Compower which has been only partly used pany at Gary, Indiana, is being installed up to now, and which was once utterly the most remarkable power-plant that the wasted. And that this power will entirely world has seen. Thirty-three huge gas. displace steam, in the great mills, and engines, each of 3,000 horse-power, have that the rolling of more than two mil- been ordered and the foundations and lion tons of steel ingots per year will housings are being provided to receive be but one portion of the work it will them. They are to use only the gas properform are facts that indicate the tre- duced by the iron smelters, in the process mendous importance of the innovation of making pig from ore, and they are to

For every ton of pig-iron which flowed furnish the power, which, when confor many years from the mouths of the verted into electricity, will turn every world's blast-furnaces, the power of shaft and pulley and roll and wheel in the

Copyright, 1908, by Technical World Company.

ОСкто ? PUT

9000 mar 1903) v.9

417 TECHNICAL WORLD MAGAZINE

vast mills of this tremendous plant, and Steel corporation and its subsidiary comincidentally will provide light and water panies to bring the perfection of the idea and fuel gas for the town. One hundred to the highest point and to apply it on thousand horse-power will be the ap- the enormous scale now projected. To proximate total developed and from a the English iron manufacturer Thwaite, gas which was once entirely wasted and to the German blast-furnace works at which till now has never been more than Hoerde, and to the John Cockerill Compartially used.

pany of Belgium, is jointly due the credit In the process of manufacturing iron for originating the ideas which led to the from ore, exactly the same conditions are present use of the blast-furnace gas, but set up in the blast-furnace, for the pur.. the American concern has taken a huge poses of that process, as are created in stride beyond them.

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ONE BEARING OF A 6,000 HORSE-POWER ELECTRIC MOTOR.
On the upper right-hand corner stands a complete auxiliary motor, which may operate the switch

controlling its big brother.

the gas producer, where the object is to The principle which lies back of the manufacture only gas. The result is that whole matter, the value of which can one of the most important by-products of hardly be said to have been recently disthe industry is the inflammable gas which covered but which has been but recently it is now proposed to use. The idea of fully realized, is that the gas, applied diutilizing it is not entirely new, for ever rect in the internal combustion engine of since 1897, when three separate concerns proper design, will produce from two and in three separate countries began simul- a half to three times as much power as taneous experiments along this line, there the gas used as fuel for the production of has been a continued effort to perfect steam. Blast-furnace gas has already been plans by which to make the most of it. utilized in part for the latter purpose. A It has remained for the United States first effort toward saving it was in the

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