Dunkerley, Stanley, 1870- · London, New York [etc.] Longmans, Green · leaf 119
ght about by causeswhich are discussed in Chapter VIII. § 76. Applications of Ratchet Wheels.—Eatchet wheels are usedfor a variety of purposes, only one or two of which need be noticed. (1) BatcUt Brace.—lu the ratchet brace used for hand-drilling(Fig. 109), a rotation of the ratchet advances the… … Fio. lOD. the ratchet will depend on the magnitude of the swing given tothe arm; so will the linear advance of the drill when the screw isheld to prevent rotation, but the feed can be reduced by allowingthe screw partial angular motion; in other forms the screw turnswith the ratchet and the nut may…
Machinery, Kinematics of
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