Steam Boilers Their Design Construction And Management
Steam Boilers Their Design Construction And Management
William Henry Shock
The book Steam Boilers Their Design Construction And Management was written by author William Henry Shock Here you can read free online of Steam Boilers Their Design Construction And Management book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Steam Boilers Their Design Construction And Management a good or bad book?
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Fairbairn considered the exactly cylindrical, parallel, and smooth drilled holes not well adapted to rivets. Besides, punching saves about one-fourth the time and labor as compared with drilling as ordinarily practised. Special machinery has been introduced of late for drilling the holes in the various parts of boilers. In Harvey 's Boiler-drilling Machine the cylindrical shell of a boiler is placed vertically upon a central circular turn-table. The machine is provided with three drilling head-...stocks, which travel on an outer rail around the boiler, and each one of which can drill one-sixth of the circumference of the boiler without moving the latter. Each head-stock is provided with a vertical traverse for drilling the longitudinal seams. A very convenient arrangement for drilling the holes of boilers was designed by Chief-Engineer H. Newell, U. S. N. , who describes the method pursued in building a set of cylindrical boilers, 8 feet in diameter, for the U. S. S. Galena, at the Navy- Yard, Norfolk, Va.
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