Improved Feed Water Purifier.
Year: 1892

page_text: Date of Application, 6th May, 1892
: Complete Specification Left, 6th Mar., 1893-Accepted, 6th May, 1893
PROVISIONAL SPECIFICATION.
Improved Feed Water Purifier.
I ERNEST RICHARD JOICEY Engineer and Boiler Maker, 8 St. Edmunds
Place, Gateshead-on-Tyne, County of Durham, do hereby declare the nature of
this invention to be as follows:-
This invention consists of a mechanical apparatus for filtering feed water for
boilers and other purposes designed with one large mud receptacle as a base for
filters of conical form and as many as can be attached according to the size of
boilers as may be required. The filters are fixed inside the boilers and secured
to feed inlets and perforated delivery pipe or pipes on the top cover, the feed
being delivered or diffused as spray in steam space which enters the body of
water at the same temperature. The filters are made of cast iron, copper or
gun metal and are in the form of cones with zinc filtering plates perforated,
with brass gauze between with a plaited covering of Indian grass filled up with
animal charcoal. The mud receptacle is provided with a blow valve.
Dated this 6th day of May 1892.
No text detected.
COMPLETE SPECIFICATION.
Improved Feed Water Purifier.
I ERNEST RICHARD JOICEY Engineer and Boiler Maker of 8 Saint Edmunds
Place, Gateshead-on-Tyne County of Durham, 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:-
This invention consists of a mechanical apparatus for filtering feed water for
boilers and other purposes designed with one large mud receptacle as a base
for filters which are conical in form so that the greater the pressure the more
compact the filter bed becomes as many filters being used as the size of the
boiler or the impurity of the water renders necessary.
The filters are fixed inside the boiler and secured to the feed water inlet.
perforated delivery pipes being attached to the top cover of the filters (or the
filters themselves may be perforated) the feed water is thereby delivered into the
steam space in the form of fine jets or spray and is rapidly heated so that it
reaches the bottom of the boiler at or near the same temperature as the main
body of water in the boiler.
The filters are constructed of cast iron copper, gun metal or other suitable
metal and are in the form of cones fitted with perforated zinc filter plates
having brass or copper gauze covered with plaited Indian grass between each
and filled up with animal charcoal or hair.
The mud receptacle is fitted with a blow off valve at one end and a blow
through valve communicating with the steam space at the other to blow the
mud out. I provide also a neutralizing tank containing a chemical solution to
neutralise any acids there may be in the feed water.
And in order that my invention may be fully understood I will proceed to
explain the same with reference to the accompanying sheet of drawings in which,
Fig. 1 represents a longitudinal section of a boiler fitted with neutralizing
and filtering apparatus constructed according to this invention.
Fig. 2 is cross section of the same.

page_text: Tig piani.
The same letters denote the same parts in all the figures.
a, a, a, are the filters constructed of gun metal, copper, cast iron or other
suitable metal secured to the feed water heater and mud receptacle b.
The filters are fitted with perforated galvanized iron or zinc filtering plates
filtering medium being animal charcoal contained between copper or brass gauze
covered with plaited Indian grass or hair or the filtering material may be
contained in bags made of hair or the said grass above the zinc plates and
filter bed are perforations in the filters a a a for breaking up the feed water
into fine jets or spray in which state it is rapidly heated and is at or near the
temperature of the main body of water by the time it reaches the bottom of
the boiler thus avoiding the contraction of the bottom shell plates and con-
sequent straining of the boiler when cold water is pumped into the boiler in the
usual way.
The filters a are closed at the top by caps m secured thereto by cotters.
The heater b. is made in sections each of which will readily pass through the
manhole and is supported by feet resting on the flues as shewn at Fig. 2.
1. j. are the flues, k the boiler shell the mud-door d is the feed pipe e. the
check and feed regulating valve g. the blow off cock to discharge the mud from
the heater b. c the blow off or discharge pipe. l. the blow through cock to admit
steam from boiler to heater when mud is to be blown out. f. is tank containing
alkaline solution to neutralise any acid in the feed water which communicates by
means of the pipe n with the feed pipe. i is the safety valve.
The feed water is forced into the heater 6 where it is mixed with the neutralizing
solution and heated sufficiently to throw down the impurities which are capable
of being removed by heat and after passing through the filter beds is sufficiently
pure to prevent accumulation of mud and scale on the flues and plates thereby
saving fuel increasing the steaming capacity of the boiler and prolonging to life
thereof.
Having now particularly described and ascertained the nature of my 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 purifying and heating feed water for steam boilers the
receptacle b. having one or more filters a. attached thereto and provided with cocks
and pipes for admitting steam to the said receptacle and discharging the mud
therefrom substantially as and for the purposes stated.
2. In apparatus for purifying and heating feed water for steam boilers the
conical filters a. provided with perforated filter plates adapted to receive a
filtering medium the said filters being perforated at the top to break up the
steam of feed water into minute jets or spray substantially as described.
3. In apparatus for purifying and heating feed water for steam boilers the
receptacle b. fitted with filters a. as bereinbefore described and claimed in com-
bination with a tank f. containing an alkaline solution communicating by means of
the pipe n. with the feed pipe substantially as described.
Dated this 6th day of March 1893.
BROWNE & Co.,
9, Warwick Court, W.C., Agents for Applicant.