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An encyclopaedia of architecture, historical, theoretical, & practical. New ed., rev., portions rewritten, and with additions by Wyatt Papworth (1888)

Gwilt, Joseph, 1784-1863, Papworth, Wyatt Angelicus Van Sandau, 1822-1894 · London Longmans, Green · leaf 705

An illustration from An encyclopaedia of architecture, historical, theoretical, & practical. New ed., rev., portions rewritten, and with additions by Wyatt Papworth, 1888, leaf 705
1 1 j \ , ■„:1 \ ci i. / i V A u Vr, . i 1 Fig. 8 4. 684 THEOKY OF ARCHITECTUEE. Book II. … acts as a great syringe, and in which works a piston ci, worked by the piston rod ab,having a valve at v, also opening upwards. The piston is worked alternately upwardsand downwards in common pumps by a lever called the brake,but it may be worked in many ways. In the figure, W isthe level of the…

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