Hartford Steam Boiler Inspection and Insurance Company · Hartford, Ct. : Hartford Steam Boiler Inspection and Insurance Co · leaf 143
rceit into the fitting more than about three threads; and it had been in use, for howlong or under what pressure we do not know, with only these three threads totake the entire strain. It is almost impossible to preserve, in a photo-engraving, all the little indi-cations that tell the story, to the… … Fig. 7.— Four-inch Pipe. Thread without Sufficient Taper; Made Up only Four Threads. are supposed to conform to. Some are threaded too short, some do not haveclean threads at all, some have threads that are wrong in shape, and some donot have the proper taper. The fact that these specimens are not…
Locomotives · Steam-boiler explosions
Internet Archive · Carnegie Library of Pittsburgh · Public Domain Mark 1.0. Free to use for anything.
