Year: 1888

page_text: I, DAVID STARK of 421 California Street San Francisco in the County of San
Francisco State of California, United States of America, Engineer, do hereby
declare the nature of this invention and in what manner the same
performed, to be particularly described and iscertained in and by the following
statement
18 to be
My invention relates especially to that class of water heaters and purifiers in which
the water is heated and purified before entering the boiler and has for its object the
production of a device whereby the water is heated to a high degree of heat under
pressure directly from the water main without passing through intermediate machinery
of the boiler and becoming impregnated with oleaginous matter so incident to the
lubrication of such mechanisms
To attain this end my invention consists essentially of a filtering chamber
surrounded by a steam jacket through which exhaust steam from the Boiler
passes
A cold water coil of Pipe is located in the upper end of the steam jacket in which
the water from the main is heated and connects with the filtering chamber
The filtering material is supported upon a perforated diaphragm beneath which is a
Chamber provided with an inclined Plate which receives the sediment passing down
through the filtering material and directs it to the bottom of the chamber to be drawn
off at pleasure while the heated water is drawn off above the sedimentary deposit in
a pure state all of which together with the detuls of construction and operation will
be hereinafter fully described, the Figure represented by the accompanying drawing
13 in vertical section taken through filtering chamber and steam jacket
A represents the outer or steam jacket provided with the inlet Pipe B connecting
with the exhaust of the Boiler and Bx the escape or outlet Pipe or Port through
which the steam after passing through the jacket escapes into the open air

page_text: Within this jacket is placed the filtering chamber suitably supported by the
angle braces and the lower end bolted to the base-plate of the steam-jacket as
shown
The filtering material of this chamber which may be composed of broken_stone,
cobbles pebbles or bricks or other material is supported upon an apron or plate D and
occupies about one half of the space of the Cylinder and so that Chamber or open
space E is left above the filtering substance
Sufficient spice is also left above the filtering cylinder within the steam-jacket to
receive the water heating coil F which latter is constructed of Copper
As it becomes necessary in practice to heat the water quickly as it passes through
the coil into the filtering chamber I construct my coil of Copper this metal boing more
sensitive to heat thin iron and hence thus 19 an important feature of my
invention
The lower end of this coil is coupled to the top-plate of the filtering-cylinder and
passes into the chamber while the outer end extends through the shell of the stem-
jacket and connects with the cold-water main indicated in the drawing is a feed water
pipo
The head of this cylinder also receives pressure regulating Pipe G which extends
through the shell of the steam-jacket and is provided with a pressure gnge of suitable
character
A hot water chamber H is formed in the lower end of the filtering cylinder and an
inclined apron or plate H× is connected to the side of the chamber and extends down-
ward to near the funnel shaped mouth of the sediment collector or settler H³, a
suitable draw-off cock and Pipe I connects with this chamber H2 for drawing off all
sediment that passes down through the filtering material and perforatel plate D
The Hot Water Chamber is tapped just below the upper end of the inclined plate to
receive a feed-water pipe J which extends through the shell of the storm-jacket and
connects with the steam boiler to be supplied with the hot and purified water which is
drawn off above the collected sediment, this Pipe may, however extend up above the
pressure gage as shown by dotted lines J* as the filtering chamber is always under
pressure
Suitable man-holes, KK K* K* are provided in both the steam jachet and filtering
cylinder for renowing or cleansing the filtering substance and removing the deposited
sediment and a draw-off cock L connects with the steam-jacket through which to draw
off the water of condensation
In operation cold-water from a water main or tank is admitted to the copper-coil within
the steam-jacket, through the upper feed-water pipe and exhaust ste um from the sterm
boiler is received upon the coil through the medium of the Pipe D which quickly
heats the water as it passes through the Copper-coil into the filtering chamber which
latter chamber being constantly under pressure quickly causes the sediment to be
thrown down through the filtering material into the lower-chamber or settle at tho-
bottom of the filtering cylinder leaving the hot water pure and deprived of ill foreign
substances to be drawn off above the collected sediment into the boiler, most of the
sediment however will adhere to the filtering material and the latter will require
cleaning at intervals, that portion which does not adhere to the filtering material how-
ever will pass down into the lower chamber of the machine while the purified water
will be drawn off and out above the deflecting plate
It should here be observed that the outlet pipe "B" being of the same diameter
as that of the inlet exhaust pipe and that no undue pressure will be exerted upon the
shell of the steam-jacket and by so constructing that portion of the outer shell between
the braces C C a vacuum chamber may be formed for connection with a compound
engine with safety
By this construction it will be seen that I am enabled to supply boilers with pure
heated water free from oily matters and without the necessity of pissing the hot water
through pumps by which operation the valves of these pumps so employed soon
become greatly impaired and necessitate constant attention or renewal

page_text: 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
-
1st An Apparatus for heating and purifying feed-water consisting of a inner
filtering cylinder under pressure and an outer shell or steam-jacket provided with a
Copper heating coil leading from the supply pipe or cold water main into the head of
the filtering evlinder and adapted to discharge hot or heated water upon the filtering
material when heated by exhaust steam admitted to the outer-shell or steam-jacket as
set-forth
2nd The Feed Water Heater and Purifier herein described consisting in an inner
Cylinder under pressure provided with an upper-chamber and supperposed filtering
material in combination with an outer shell or steam-jacket having inlet and outlet
ports or pipes and a water-heating coil therein through which water heated by the
exhaust steam from a Boiler passes into the filtering chamber as set forth
3rd In a Feed Water Heater and Purifier the combination with the hot-water or
draw off chamber of the defecting or sediment conducting plate H* as and for the
purpose specified
4th In a feed water heater and purifier the combination with the inner filtering
and purifying chamber or cylinder and outer shell or steam jacket of the man-
holes K, K K* K* for the purpose of removing cleansing and replacing the
filtering material as specified