Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 317
steam from the left-hand end of valvepiston in the same manner and at the same time that steam isadmitted behind the right-hand end. The exhaust ports in thechest allow for properly cushioning the valve piston. The 318 Pump:; and Hy..rciUi.cs small ports on the other side of the steam cylinder,…
Hydraulic machinery · Pumping machinery
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
