London : Longman, Rees, Orme, Brown, Green, and Longman · leaf 184
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 cross bolts,equal in size to… … It is seen from,y%. 72. that there are two tension bars on eachside of the beam, inclined to each other at an obtuse angle;and each of these consists of two lengths, each having an eyeas before described at one extremity, and a screw at the other.
Architecture
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