Hatfield, Robert Griffith, 1815-1879. [from old catalog] · New York & London, Wiley and Putnam · leaf 241
en the distance between kf and w i will givethe thickness required. 382.—Case 2.— When the falling-mould is curved. In Fig.278, sr dbis equal to s r «f 6Mn F«^. 274. Make a c equal to thestretch-out of the arc, s b, according to Ait. 92, and divide a c and5 6, each into a like number of equal parts… … a e f g h i c in that figure, and complete the tailing-mould, k j, every way equalto u m in Fig. 274:; from the points of division in the arc, 56, drawlines radiating towards the centre of the circle, dividing the arc,r d, in the same proportion as s b is divided ; from d and 6, drawd t and h w, at…
Carpentry · Architecture
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