The American house-carpenter : a treatise upon architecture, cornices and mouldings, framing, doors, windows, and stairs : together with the most important principles of practical geometry (1849)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York : J. Wiley · leaf 135
112 AMERICAN HOUSE-CARPENTER. … Fig. 131. ters of the required ellipse. To describe the curve by intersec- tion of lines, proceed as directed at Art. 118 and note ; by a trammel, see Art. 125 ; and to find the foci, in order to describe it with a string, see Art. 115. d d Fig. 132. Fip. 133 234. — Fig. 132 to 139 exhibit various…
Carpentry · Architecture · Building
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