Mechanical drawing; a treatise on the drawing of mechanical and machine details (1920)
Jones, Franklin Day, 1879-1967 · New York, The Industrial press; [etc., etc.] · leaf 282
the base line CD and the diagonalline AB on lines 2, 3, 4, etc. After the points in one half ofthe curve GK are located, the corresponding points on theremaining half are determined in the same manner and thecurve is then drawn through these locating points. Development of a Three-piece Elbow. — A… … Machinery Fig. 12. Development of the Pattern for the Dome Sheet of a Boiler into a number of equal divisions, as in the preceding example,and radial lines are drawn through these points. Verticallines are also drawn which intersect with line EF, and throughthese points of intersection other lines…
Mechanical drawing
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