Material handling cyclopedia; a reference book covering definitions, descriptions, illustrations and methods of use of material handling machines employed in industry (1921)
Wright, Roydon Vincent, 1876- ed, Little, John G., joint ed, Augur, Robert C., joint ed · New York, N.Y., Simmons-Boardman Publishing Co · leaf 565
he hand-wheel. (£) The double thread type steering gear is one inwhich the reduction or ratio and the non-reversible fea-ture are secured by a dual set of threads. An outer nut,loosely splined to the pitman arm, has a set of spiralgrooves or threads on its outer face. These threads meshwith… … Fig. 26—Double Thread Type Turning ihc handwheel causes the nut to slide endwiseand at the same time to rotate in the opposite directionfrom the handwheel, but at a much slower rate of speed.The pitman arm being splined to the nut, rotates with itand accomplishes the required steering effort.…
Hoisting machinery · Conveying machinery
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
