Twentieth century hand-book for steam engineers and electricians, with questions and answers .. (1905)
Swingle, C. F. [from old catalog], Horstmann, Henry Charles, 1858- [from old catalog], Tousley, Victor Hugo, 1875- [from old catalog] · Chicago, F. J. Drake & co. · leaf 37
e. All holes cut in boilers, such as manholes, hand holes, and those for pipe connections,above two. inches should be properly reenforced byriveting either inside or outside a wrought-iron or steelring or flange of such thickness and width as to con-tain at least as much material as has been cut… … figure 3. THE BOILER 25 5. How is a boiler of the fourth type constructed? 6. In what respect do water tube boilers have theadvantage over other types as regards explosions? 7. What kind of material should be used in the con-struction of boilers? 8. What does the term tensile strength (T. S.)mean?…
