The American house carpenter. A treatise on the art of building. Comprising styles of architecture, strength of materials, and the theory and practice of the construction of floors, framed girders, roof trusses, rolled-iron beams, tubular-iron girders, cast-iron girders, stairs, doors, windows, mouldings, and cornices; together with a compend of mathematics. A manual for the practical use of architects, carpenters, stair-builders, and others (1880)
Hatfield, R. G. (Robert Griffith), 1815-1879, Hatfield, O. P., ed · New York, J. Wiley & sons · leaf 415
weight P be too far from the fulcrumC the end of the bar B will fall, but if it be too near it willrise. 376,—The liCver Exemplified toy the Steelyard. — To exemplify the principle of the lever, let the bar A B {Fig.272) be balanced accurately with the scale platform, butwithout the weights R and… … Fig, 272, the weight P to equal 5 pounds, what at this pomt will bethe weight of i^ ? By trial we shall find that R = 100 pounds.Again, if a portion of R be removed, then the weight Pwould have to be moved along the bar B C to produce anequilibrium ; suppose it be moved until its distance from Cbe…
Carpentry · Architecture · Building
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
