Winslow's Comprehensive mathematics : being an extensive cabinet of numerical, arithmetical, and mathematical facts, tables, data, formulas, and practical . 350 PATTERN CUTTING. indefinite perpendicular, as C D. Make. e p, e g, each equal toA e or B r; and fromthe points p and g,through the points eand r, draw rightlines, as g e s,g r (,p e m,p r n. Thenwith .4 e or B r theradius, and e and rthe centres, describem A s, I B n; andwith g s or p n theradius, and g and pthe centres, describes t and m n. AB=zD=z Bd By = ;/; CDz=:d (4-^3)2) 4 — ^3 ~ ~ 3 =
Winslow's Comprehensive mathematics : being an extensive cabinet of numerical, arithmetical, and mathematical facts, tables, data, formulas, and practical . 350 PATTERN CUTTING. indefinite perpendicular, as C D. Make. e p, e g, each equal toA e or B r; and fromthe points p and g,through the points eand r, draw rightlines, as g e s,g r (,p e m,p r n. Thenwith .4 e or B r theradius, and e and rthe centres, describem A s, I B n; andwith g s or p n theradius, and g and pthe centres, describes t and m n. AB=zD=z Bd By = ;/; CDz=:d (4-^3)2) 4 — ^3 ~ ~ 3 = ); p s = e p — A e=zo y s= )2D T A y=ey o r Dpsgt gs = A r—g C— m C5=120°. 2Vo. 2. — T^e ZateraZ Portion. D\d\\H ;df. D represents the transverse, and d the conjugate, diametersof the greater base ; D the transverse, and dJ the conjugate diam-eter of the lesser base; h the perpendicular depth of the vessel. TT— Dh — Tt — Di ^e PerPen(iicular height of the generating cone; S= s/IP-\-{^d)\ the minimum slant height of generating cone ; M= y/ZP -|- ($D)*i the maximum slant height of generating cone. tf~F; ta = P;fa = R;fc = N; fv=S;f A = M ; diagram. Rule. — Place the square suitably on the pl
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