Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 53
128. INTERNAL SPUR GEAR and Pinion-In this style of gearing more tooth surface is in con-tact than with outside teeth; it has less wear and greatpower. Much used in hoisting machines. … 129. BEVEL GEARS, when of equal diameter.MITER GEARS, when of unequal diameter. ffinnQmn 130. CROWN WHEEL geared with a spurwheel. Used for light work. A very old device. ^3 131. SPIRAL GEARING.—The velocity ratioof spiral gears cannot be determined by direct com-parison of pitch diameters, as in…
Mechanical movements
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