Gould, Lucius D., b. 1814. [from old catalog] · New York, A.J. Bicknell & co. · leaf 54
an arc, cutting the curve at R. For the direction of the straight wood,draw R H equal to N H, Fig. 2, and J H equal to R H, Fig. 2. For thewidth of the mould, and the points for the pins to describe the outside andinside curves, set ofi each way from L half the width of the rail. From thepoints… … Scale -/ inchy Ifoot. Plate 13 Exhibits the ground flan and elevation of an acute angled platform staircase;the wreath in two To find the major axis of the elliptical curve required for the centre of themould. At Fig. 1, draw B S parallel to C R, equal to C D, Pig. 2; producethe curve A B to D ;…
Stair building
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
