Hartford Steam Boiler Inspection and Insurance Company · Hartford, Ct. : Hartford Steam Boiler Inspection and Insurance Co · leaf 14
itting, it is often difficult to tell, in thefinished job, whether it was threaded to standard or not; but the man who puts it inhas every chance to inspect it before it is made up, and there can be no excuse whateverfor his passing it if it is not right. In order to illustrate as clearly as… … Fig. 7. Three-inch Pipes. (The One on the Right Could be Made Up onlySix Threads. The Other was Standard, or Nearly So.) Fig. 1 shows the ends of four-inch, six-inch, and eight-inch pipes, as cut from pipejust received from the mills of the manufacturer. These threads are not absolutelycorrect, but…
Locomotives · Steam-boiler explosions
Internet Archive · Carnegie Library of Pittsburgh · Public Domain Mark 1.0. Free to use for anything.
