Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 365
n is fastened on a slide-rest moving inguides attached to the power shaft by a long hub.-^ To hold the slide firmly tothe shaft-hub there are three key-bolts, n n n. To move the crank-pin slidethese bolts must be slacked, and by means of a hand lever (Fig. 781), using asa fulcrum the pins on one of… … Fig. 777.
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten07unit-973-623.webp)
