A dictionary of architecture and building; biographical, historical and descriptive (1901)
Sturgis, Russell, 1836-1909 · New York, Macmillan · leaf 299
metal and theknocking about and rough handling to whichthey were subjected when not in use, thethreads became injured and would not work inthe nuts or sleeves, and they were abandoned.Next, cast-iron screws came into u.se, and asthey were rough and the joining of the mouldhad to be obliterated to… … .3X12.INCH BEARH^C BLOCK. Fic:. :■>. came from the sand. These screws are stillthe standard for all ordinary work. An illustra-tion is given in Fig. 4. They are 2 J inches indiameter and 2 feet long; the pitch is f inch,498 SHORING and they have a niising distance of 14 inches■without shifting.…
Architecture
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