Gould, Lucius D., b. 1814. [from old catalog] · New York, A.J. Bicknell & co. · leaf 32
ig. 2, as radius, describe arcs, cutting the curve at Dand H; join S H and S D. Then H D is the length of curve, and S D thedirection required. The width of the mould is found by setting off eachway from B, half the width of the rail; the points from which to describethe outside and inside curves.… … Plate 7 Exhibits the ground plan of an elliptical turnout at the starting of the staircase;the mould formed by ordinates; the plank sawed square, and the joints madeat right angles to the face of plank. The workman will first draw the elliptical curve required for the turnout,and attach the newel…
Stair building
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
