Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 135
it remains idle. It is sometimes necessary to use a draft tube longer than isordinarily attached to the wheel. If properly constructed andapplied there will be no sensible loss of power, but it must beair tight, and when of considerable length it is better enlargedgradually toward the lower end,… … mil
Hydraulic machinery · Pumping machinery
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
