Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 30
Syphon Cock. Syphon Cock. A cock having a combined chamber which ispartially filled with water of condensation, attached to asteam gauge to keep steam from entering and damagingthe works of the instrument. 32 Pumps and Hydraulics.
Hydraulic machinery · Pumping machinery
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
