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 (1920)
Griffin, Charles Lewis, 1867- [from old catalog], Adams, Charles Clyde, 1882- [from old catalog] joint author · Chicago, American technical society · leaf 86
in the center of the wire. Now draw aseries of circles writh centers on this helix and of a diameter equalto the diameter of the wire. Smooth curves drawn tangent to thesecircles, as shown jn 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 BDPN 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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