Blueprint reading; a practical manual of instruction in blueprint reading through the analysis of typical plates with reference to mechanical drawing conventions and methods, the laws of projection, etc (1919)
Fairfield, Howard Parker, 1858-, Kenison, Ervin, Waite, Edward B. (Edward Broughton), 1873-, American Technical Society · Chicago, American technical society · leaf 281
and a radius ofI\ or If inches, describe short arcs intersecting at 7. A line 0 D.drawn through the points 0 and I, bisects the angle. In solving this problem the arc E F should not be too near thevertex if accuracy is desired. Proof. The central angles A 0 D and DOC are equal be-cause the arc E F… … 126 MECHANICAL DRAWING 61 angle approximately as shown. Draw Ar C; and Ef Ff parallel toA C and E F and at such equal distances from them that they willintersect at 0. Now bisect the angle C 0 F by the method given inProblem 8. The line 0 R bisects the given angle. Proof. Since A/ C is parallel to…
Mechanical drawing · Blueprinting
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