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 283
se onlines which are numbered alike. In this way points for the 270 MECHANICAL DRAWING lower edge are determined, and as the upper edge is similar,it is simply necessary to lay off the same distances above andbelow the center line NO. The principle of this parallel-line method of development is… … Machinery Fig. 13. The Radial-line Method applied to a Pattern Development ones previously referred to, is illustrated by the diagram,Fig. 12, which shows how the pattern for the dome sheet of aboiler is laid out. t In this case, the cylindrical dome is muchsmaller in diameter than the boiler. A…
Mechanical drawing
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