Machine drawing; a practical guide to the standard methods of graphical representation of machines, including complete detail drawings of a duplex pump and of a direct-current generator (1914)
Griffin, Charles Lewis, 1867-, Adams, Charles Clyde, 1882- joint author · Chicago, American technical society · leaf 86
in the center of the wire. Now draw aseries of circles with centers on this helix and of a diameter equalto the diameter of the wire. Smooth curves drawn tangent to thesecircles, as shown in the figure, will give the projection of the spring.Fig. 57 shows a helical spring of square wire. The… … Fig. 56. Accurate Diagram for Helical Spring of Round Wire have the same pitch, equal to AB for, since the square BDP N isthe same as ACML, the distance CD is the same as AB; and sincethe points L, M, N, and P are vertically under A, C, B, and D, 74 MACHINE DRAWING respectively, the distance LN is…
Machinery
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