Thomas, Hugh Kerr · New York, McGraw-Hill Book Company, Inc.; [etc., etc.] · leaf 79
in motion by hand,weights were added to the cord on the worm drum until a con-stant speed of rotation could be maintained. On substituting heavier weights, it was found that a greaterweight was needed to keep the wheels in motion, and, several.observations being thus made, a number of values were… … EFFICIENCY OF WORM GEARING 67 these fell in a straight line as shown by the line A (Fig. 29)The observed points being TABLE VII Pressures x Load to overcome friction y 2 1b.4 1b.81b. 3.754.756.75 It is evident that the loads y are the product oi xXfi i .: y=Xfi 1 Curves showing Values of ;it from…
Gearing, Worm
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