Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 648
cates by branch-pipes^/y with the inside of the vacuum-box. In the lower part ,^f the pipe G there isa, throttle valve S, which closes or opens the communication between the fan and the vacuum-box Ethis valve has a lever c/ on its spindle, which is connected by a rod A to a long arm i of a lever…
Mechanical engineering
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
