Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise on the care and management of steam engines, boilers and electric machinery (1922)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 18
ts and the drum iscut away at these two points to make connection with insideof water leg, the opening thus made being strengthenedby bridges and special stays, so as to preserve the originalstrength. The shells are cvlinders with heads dished to form Heine Safety Boiler 9 parts of a true sphere.… … Fig. 5 375 H. p. HEINE BOILEE heads are therefore free to foIJoiu their natural lines ofexpansion when put under pressure. Where flat headshave to be braced to the sides of the shelly both suffer localdistortions where the feet of the braces are riveted to them,making the calculations of their…
