A dictionary of architecture and building : biographical, historical, and descriptive (1902)
Sturgis, Russell, 1836-1909 · New York : The Macmillan company · leaf 304
ing 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.Ne.xt, cast-iron screws came into use, and asthey were rough and the joining of the mouldhad to be obliterated to make them work,… … .3xi2.1nch be.ar.1 nc block. Fig. .1. came from the sand. These screws are stillthe standard for all ordinary work. An illustra-tion is given in Fig. 4. They are 2J mches indiameter and 2 feet long; the pitch is | inch,498 SHORING and they have a raising distance of 14 incheswithout shifting. Their…
Architecture · Architects
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