Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 279
below. W.en a W Zha. a veo. long span, as in Fig. 17,3, it is constructed as sho™ h ^ 1/0, m wh ch A represents a T-beam which can be trussed if necessavTh,s construct™, allows the water to escape from the botton o theupper hght to the outside of the top of the lower skvhVht ZcM I Cof the upper… … Fig. 171. end of the main shaft, and C the binder that fastens the main shaft tothe upright or rafter. D shows the quadrant wheel attached to mainshaft and E is the wonn wheel, geared to the qnadrant D, commun-icating motion to the whole shaft.F is a hinged arm fastened to themain shaft B and…
Architecture · Building · Carpentry
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