Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 541
ure, are rectangular pieces of stoutmetal, and are dropped into slits made through the rim of the drum, their length being equal to thatof the case, and their width to the distance between its rim and the D piece. They are moved by acrank attached to the drum-axle. To lessen the friction and…
Mechanical engineering
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
