Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 412
ld beprotected as the Codman boiler(page 392). Water-tube boilers are now inextensive use, economical in evap-oration, and popular from thecomparative safety from explosion.Some of the numerous and variedforms will be found illustrated inthe Appendix. Flue Boilers.—Where bitumi-nous coal is used,… … Fig. 928. 396 MACHINE DESIGN AND MECHANICAL CONSTRUCTIONS. ample to make the tubes subject to outside stress 50 per cent thicker than forbursting, especially for the large drawn tubes now made. Mr. Fairbairn, fromhis experiments, considered it necessary to make the joints of tubes subject…
Mechanical drawing
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