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 87
awing care-fully, to decide what lines will be visible(full lines) and what invisible (dotted lines).Dotted lines should be used from // to JN to P, etc., and full lines from F to G, Bto D, etc. The line S T is the end of thespring, and consequently any part of a helixwhich goes outside of that… … Fig. 58. Conventionar Draw-ing for Spring of Round Wire MACHINE DRAWING 75 which lie to the right of S T. The parts to the left of S T areshown in the figure by light, dotted lines to indicate that theyare construction lines, and not a part of the projection of thespring itself. Conventional…
Machinery
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