Thomas, Hugh Kerr · New York : McGraw-Hill Book Co. · leaf 51
S lines of pressure are shown as a skeleton diagram, and it is seenthat they form a portion of the surface of a conical spiralencircling the worm. Taking Fig, 13, the portion of this surfacewill be seen to be approximately a segment of a cone, and seeingthat several teeth operate at one time, the… … Fig. 14. from this line, touch the worm threads respectively to theright and left of this point, viewed from the end of the wormaxis. The lines of pressure, therefore, for every point of con-tact range themselves in such directions as will conform moreor less to the surface of a cone, and the…
Gearing, Worm
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