London : Longman, Rees, Orme, Brown, Green, and Longman · leaf 184
Jig. 77.) on each side, serving more effectually to embrace thetimber. A f in. bolt {jj, in Jig. 77.) passes through the centreaf this casting, and vertically through the beam, to ^retainit in its place, until the tension bars are drawn up. Againstthis casting, in two semicylindrical seats, lie two…
Architecture
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