Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 439
t this motion, which is eflected by a friction-spring brake constructed andconnected with the rack in the following manner. To the end of the rack is attached a chain m, whichpasses over a pulley o, and then around a spin-wheel p, attached to a ratchet-wheel H^ and with itturning freely on a… … MULE, SELF-ACTING. 433
Mechanical engineering · Mechanics · Engineering
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten15unit-267-164.webp)
