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 371
fixed pulley F makes no differ-ence in the point P, but merely changes the motion of it in an op-posite direction. 1320. We may hence ascertain the effect of a combination or systemof any number of fixed and moveable pulleys, and we shall thereby findthat every cord going over a moveable pulley… … or THE WEDGE. 1321. The wedge is a body in the form of a halfrectangular prism, in practice usually of wood ormetal. AF or BG (fg. 559.) is the breadth ofits back, CE its height, CG, CB its sides, and itsend, GBC, is the terminating surface of two equallyinclined planes GCE, BCE. 1322. When a wedge…
Architecture · Architects
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