Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 276
ch per foot. The shoulder his for the purpose of drawing out the key. Sunkkeys are not necessarily taper. Some prefer themof uniform section, and to force the hub on overthe key. It is good practise in fitting keys that they shallalways bind tight sideways, but not necessar-ilytouch either at the… … Fig. 553. tSv Tj
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
