Improvements in the Method of and Apparatus for Supplying Fresh Water for Steam-boilers and other Purposes on Board Ship.
Year: 1889

page_text: COMPLETE SPECIFICATION.
Improvements in the Method of and Apparatus for Supplying Fresh
Water for Steam-boilers and other Purposes on Board Ship.
I, JOHN WALSH, of 1664 3rd Avenue, in the City, County, and State of New
York, United States of America, Engineer, do hereby declare the nature of this
invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
My Invention relates to an improvement in apparatus for supplying fresh water to
marine boilers, or any other purpose; and has for its object to economize fuel and to
provide a more rapid distillation of salt water than has heretofore been accomplished.
The Invention consists in the combination with the condensing water outlet, of
a tubular connection between the said outlet and the water inlet of the distilling
apparatus as hereinafter set forth.
The drawing represents a condenser, in elevation, connected in accordance with
my invention with the distilling apparatus, which apparatus is in vertical section.
The prime object of this invention is to dispense with the sea suction of the
distilling apparatus used upon steam vessels and supply hot salt water heated while
passing through the condenser, to the water inlet of said apparatus instead, thereby
greatly facilitating the process of distillation and materially economizing in fuel.
In carrying out the invention, the distilling apparatus 10, illustrated, is that most
universally used, namely the Baird distiller containing an inner central water
chamber 11, a stand pipe 12 in said chamber, perpendicular steam coils 13 above the
chamber, and horizontal coils 14 around the same, the vapor being gathered by
branch tubes 15 located in the upper end of the apparatus, which tubes deliver the
vapors to a pipe 16 connected with the tubular compartment of the condenser 17.
The condenser is supplied with the usual cold water inlet tube 18 and the outboard
discharge tube 19 which delivers the hot condensing water from the condenser. At
any point desirable between the distilling apparatus and the condenser a pump 20 is
located and tubing 21 is employed to connect the suction 21ª of the pump with the
outboard delivery pipe 19 of the condenser, the connection being preferably made to
the rear of the outboard valve 22. From the delivery section 23 of the pump,
tubing 24 is projected which tubing is connected with the water inlet or stand
pipe 12 of the distilling apparatus.
In operation, the hot condensing water leaving the condenser through the out-
board delivery pipe 19 is drawn into the pump and forced out therefrom through
the tubing 24 into the chamber 11 of the distilling apparatus and as the hot salt
water enters the chamber at the boiling point, the process of distillation is very
rapid and uniform at all times which is not the case when cold sea water
introduced. Another great advantage is also obtained, namely economy of fuel as
but comparatively little steam need be forced into the distilling apparatus to properly
vaporize the water contained therein.
15
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is ;-
1. In an apparatus for supplying fresh water to boilers, the combination with the
condensing water outlet of the condenser, of a tubular connection between said outlet
and the water inlet of a distilling apparatus, substantially as shewn and described.
2. That improvement in the mode of supplying fresh water to steam boilers which
consists in introducing into the evaporating apparatus hot condensing water taken
from the condenser, substantially as shewn and described.

page_text: 3. The combination with the outboard discharge of the circulating pump, of a
condenser and a water inlet of the evaporating apparatus of a pump and a tubular
connection between said pump and the outboard discharge of the circulating pump
and the water inlet of the evaporating apparatus, substantially as and for the purpose
specified.
Dated this outh day of August 2009.
J. WALSH.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.