ISBN: 9781230112114

RareBooksClub. Paperback. New. This item is printed on demand. Paperback. 266 pages. Dimensions: 9.7in. x 7.4in. x 0.6in.This historic book may have numerous typos and missing text. Pur… Mehr…

RareBooksClub. Paperback. New. This item is printed on demand. Paperback. 266 pages. Dimensions: 9.7in. x 7.4in. x 0.6in.This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1902 edition. Excerpt: . . . designed and intelligently operated. Best adapted for plants where the service is reasonably uniform. Successful types are the Reynolds and Kent furnaces. 3. Down-draft furnaces have proved very successful and have come into extensive use where excessive demands for overwork are frequently made. TheHawley form has one grate above the other, the fire bars of the upper grate being water tubes connected with the circulating system of the boiler. The gases must pass downward through the bed of fuel. Greater draft is required than for common settings. 4. Automatic stokers, including feed devices and chain grates. These have come into extensive use in large modern plants. Their first cost and repairs are high, but they save materially both labor and fuel. They are not all equally well adapted to all fuels. The matter should be studied out for each case separately. 5. Powdered fuels have been employed successfully in cement kilns and under boilers. The plant necessary is somewhat elaborate, and as the fuel is liable to spontaneous combustion it must be powdered as it is used, and thus cannot be stored or handled in large quantities. Combinations of the above five types are frequently made, as, for instance, theafire-brick arch with mechanical stoker and steam jet. On locomotives and steamboats, brick arches and steam jets have given best results. Oil is used also. No apparatus or device can dispense with intelligent handling. I. W. RICHARDS. lowas Iron Mine. BY S. W. BEYER. Eng. Mzn. f. , February 22, 19o2. --The only one developed is Iron Hill, three miles northeast of Waukon, the seat of Allamakee County. This hill is 200 feet high, trends east and west, and has an area of more than half a square mile. u The maximum thickness of ore is. . . This item ships from La Vergne,TN., RareBooksClub<