. Pick, shovel and pluck; further experiences "With men who do things". FIG. 15, THE FLEXIBLE. JOINT USED IN THE SIPHON. If it varies six one-thousandths of an inch from a trulyspherical surface/ the engineer told us, the pipe is thrownout. We saw them raise one of the pipe sections (it weighednearly four and one-half tons) with the derrick and placethe spigot end in the bell of the last pipe section a snake or piece of rope was placed around thespigot to close the mouth of the bell and molten lead waspoured in to fill up the space between it and the spigot. 200 Picky Shovel and
. Pick, shovel and pluck; further experiences "With men who do things". FIG. 15, THE FLEXIBLE. JOINT USED IN THE SIPHON. If it varies six one-thousandths of an inch from a trulyspherical surface/ the engineer told us, the pipe is thrownout. We saw them raise one of the pipe sections (it weighednearly four and one-half tons) with the derrick and placethe spigot end in the bell of the last pipe section a snake or piece of rope was placed around thespigot to close the mouth of the bell and molten lead waspoured in to fill up the space between it and the spigot. 200 Picky Shovel and Washing Water with Air. 201 When that lead cools, won^t it shrink and make a leakyjoint? asked Bill Certainly, it will shrink, declared the engineer. Wellhave to add about twenty-two pounds to fill the shrinkagespaces, but well add that lead cold. Cold, how? Just watch, he said again. All around the bell there were gib screws, thirty-twoaltogether. After the molten lead had set, which it did al-most instantly, these were unscrewed very quickly withpneumatic tools. Then little slugs of soft lead, about aninch long, and half an inch in diameter were set in the holes;after which the gib screws were screwed into the holesagain, forcing the lead slugs into the mass of soft lead al-ready cast, making it fill the bell completely. In that way a lead ball was formed on the spigot that fittedthe bell perfectly, and the pipe was now swung about on thelead ball to see that it would turn smoothly. The next process was to test the joint. The testing ma-chine was a cylinder that fitted freely inside
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttechnology, bookyear1
