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 630
l at c will de-scribe the required ellipse. A trammel may be constructed thus: take two straightstrips of board, and make a groove on their face, in the cen-tre of their width ; join them together, in the middle of theirlength, at right angles to one another; as is seen at Fig. 406.A rod is then to… … Fig. 406. place a pencil. In the absence of a regular trammel a tem-porar}^ one may be made, which, for any short job, will an-swer every purpose. Fasten two straight-edges at rightangles to one another. Lay them so as to coincide with theaxes of the proposed ellipse, having the angular point at…
Carpentry · Architecture · Building
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
