. Cyclopedia of architecture, carpentry, and building : a general reference work .... Fig. 321. Fig. 322. vertical line P O, as shown by similar figures, through which, atright angles to P O, draw lines intersecting similarly numbered linespre\iously extended from C G in plan. Trace a line through theseintersections. Then will 1 B^ C^ 12 be the miter pattern for the facemould. In Fig. 321 is shown a perspective view of a gore piece A joinedto a chamier. This presents a problem often arising in ornamental 321 23fi SHEET INIETAL W )RK. PATTERNFOR GORE .sheet-metal work, the development of which
. Cyclopedia of architecture, carpentry, and building : a general reference work .... Fig. 321. Fig. 322. vertical line P O, as shown by similar figures, through which, atright angles to P O, draw lines intersecting similarly numbered linespre\iously extended from C G in plan. Trace a line through theseintersections. Then will 1 B^ C^ 12 be the miter pattern for the facemould. In Fig. 321 is shown a perspective view of a gore piece A joinedto a chamier. This presents a problem often arising in ornamental 321 23fi SHEET INIETAL W )RK. PATTERNFOR GORE .sheet-metal work, the development of which is given in Fig. 322. LetA B C D show the elevation of the comer on which a gore piece is re-quired. H 7 E in plan is a section through C D, and E F G H isa section through X I, all projected from the elevation as shown. Theprofile 1 7 can be drawn at pleasure, and at once becomes the patternfor the sides. Now divide the profile 1 7 into an equal number ofspaces as shown, Irom which drop vertical lines onto the side 7 Ein plan, as shown from 1 to 7. From these points draw lines parallelto F G, intersecting the opposite side and crossing the line 7 V (which is drawn at right angles to F Gfrom 70 at V 2 3 4 5 6. Draw anyline parallel to C D, as K J, upon whichplace all the intersections contained on 71 in plan, as shown by 1° to 7° on K these points erect perpendicular lines,which intersect by lines drawn from simi-larly numbered points in elevation parallelto C D. Through the points thus obtainedtrace a line. Then wil
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