IMPROVEMENTS IN FURNACE GRATES, AND IN APPARATUS CONNECTED THERWITH FOR HEATING WATER FOR STEAM BOILERS, AND FOR OTHER LIKE PURPOSES
Year: 1870

page_text: .
ETTERS PATENT to William Robert Lake, of the "International
Patent Office," Southampton Buildings, London, Consulting
Engineer, for the Invention of "IMPROVEMENTS IN FURNACE GRATES,
AND IN APPARATUS CONNECTED THERWITH FOR HEATING WATER FOR STEAM
BOILERS, AND FOR OTHER LIKE PURPOSES." - A communication from
abroad by Charles Emery Hutson, of Commerce, Missouri, United
States of America. Mechanical Engineer.
aled the 10th September 1870, and dated the 27th July 1870.
PROVISIONAL SPECIFICATION left by the said William Robert Lake
at the Office of the Commissioners of Patents, with his Petition,
on the 27th July 1870.
International Patent Office,"
I, WILLIAM ROBERT LAKE, of the
Southampton Buildings, London, Consulting Engineer, do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN FURNACE GRATES,
AND IN APPARATUS CONNECTED THEREWITH FOR HEATING WATER FOR STEAM
BOILERS, AND FOR OTHER LIKE PURPOSES," a communication, to be as
follows:-
This Invention relates to passing water through hollow grate bars;
and connecting the water flow at times with a hot water or hot water

page_text: and steam jet from the boiler so as to discharge mud or sediment
through a proper mud drum.
The said Invention also relates to the details of arrangement and
construction of the parts to enable the same to act more perfectly as an
improved feed water heater.
The grate bars are supported in the usual manner upon proper
foundations, so that fuel may be placed thereon and be consumed in a
combustion chamber or furnace of the usual form. Connected with
the end grate bars is a cold water feed pipe coming from an ordinary
cold water pump, or from a heater or other water supplying vessel.
In the said feed pipe is a check valve for preventing a return flow of
the water. In connection with the said feed pipe I arrange a steam
or hot water jet pipe, the upper end whereof is suitably perforated,
and which passes into the boiler or other vessel that is to be supplied
with water. At the joint or junction of the jet pipe with the shell of
the boiler a suitable cap is placed to secure the said pipe firmly to the
boiler and making a steam-tight joint in the usual. manner. The said
pipe has a valve operated by a hand wheel or in any other. suitable
manner to cut off the steam or water in its passage from the boiler
and prevent the entrance of feed water from the cold water pipe. A
second check valve is placed in the latter pipe. beyond the joint which
connects the said pipe with the hot water pipe. This check valve is
arranged to prevent a return flow of the feed water immediately from
the grate bars. The feed water passes from the cold water pipe into the
grate bars and through the same to an influent pipe, and from this into
the boiler as a feed water supply. The connection of the last-mentioned
pipe with the boiler is in the ordinary manner, and the said pipe has a
check valve. of the proper form to prevent the return flow of the water.
As the feed water passes from the cold water pipe. through the grate
bars it becomes heated and at the same time acts to reduce the heat of
the grate bars and prevents their being consumed.
In order to retain the sediment out of the feed water so as to prevent.
the deposit of the same in the grate bars, or its accumulation in the.
boiler, I arrange in connection with the cold water feed pipe a mud
drum around a side pipe, which connects directly with the cold water
pipe, and conducts steam through the drum. This side pipe is perforated
at that part of its length which is within the said drum. The side pipe
has a suitable blow-off valve.

page_text: In order to make the grate bars removable with as little damage as
possible in case one bar is disabled, the said bars consist principally of
the usual wrought-iron pipe part joined by a screw or flange joint with
cast-iron heads, the heads of two adjoining bars abut at the edge, and to
make a packed joint a double cone packing ring is inserted. A bolt
makes the joint perfect.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Robert Lake in the Great Seal Patent
Office on the 26th November 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
ROBERT LAKE, of the "International Patent Office," Southampton
Buildings, London, Consulting Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-seventh day of July, in the year
of our Lord One thousand eight hundred and seventy, in the thirty-
fourth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said William Robert Lake, Her special licence
that I, the said William Robert Lake, my executors, administrators;
and assigns, or such others as I, the said William Robert Lake, my
executors, administrators, and assigns, should at any time agree with,
and no others, from time to time and at all times thereafter during
the term therein expressed, should and lawfully might make, use,
exercise, and vend, within the United Kingdom of Great Britain and
Ireland, the Channel. Islands, and Isle of Man, an Invention for "IM-
PROVEMENTS IN FURNACE GRATES, AND IN APPARATUS CONNECTED THEREWITH FOR
HEATING WATER FOR STEAM BOILERS, AND FOR OTHER LIKE PURPOSES," a com-
munication to me from abroad by Charles Emery Hutson, of Commerce,
Missouri, United States of America, Mechanical Engineer, upon the
condition (amongst others) that I, the said William Robert Lake, my.
executors or administrators, by an instrument in writing under
their, or one of their hands and seals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately..
after the date of the said Letters Patent.
'
my, or

page_text: NOW KNOW YE, that I, the said William Robert Lake, do hereby
declare the nature of the said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement, reference being had to the accompanying
Drawing, forming a part of this Specification :-
This Invention relates to passing water through hollow grate bars,
and connecting the water flow at times with a hot water (or hot water
and steam) jet from the boiler, so as to discharge mud or other sediment
through a proper mud drum.
The said Invention also relates to the details of arrangement and 1
construction of the parts to enable the same to act more perfectly as an
improved feed water heater,
DESCRIPTION OF THE DRAWING.
Figure 1 is a rear end view of my Invention shewing certain parts
in section, as herein-after explained; Figures 2 and 3 are a side elevation 18
and plan of the same; Figure 4 is a detailed sectional elevation of a
series of my improved grate bars,
The grate bars A are supported in the usual manner upon proper
foundations so that fuel may be placed thereon and consumed in a
combustion chamber or furnace of the usual form. Connected with 20
the end grate bar is a cold water feed pipe B extending from an
ordinary cold water pump, or from a heater or other feed water supplying
vessel. In the said feed pipe is a check valve 6 for preventing a return
flow of the water. In connection with the said feed pipe I arrange a
a steam or hot water jet pipe C, the upper end whereof is suitably 25
perforated, and which passes into the boiler or other vessel to be
supplied with water. At the joint or junction of the jet pipe C with
the shell of the boiler a suitable cap is placed to secure the said pipe
firmly to the boiler, making a steam-tight joint in the usual manner.
The pipe C has a valve c operated by a hand wheel, or by any other 30
suitable contrivance, to cut off the steam or water in its passage from
the boiler and prevent the entrance of feed water from the pipe B.
A second check valve 6' is placed in the feed pipe B beyond the joint
which connects the said pipe with the pipe C. This check valve is
arranged to prevent a return flow of the feed water immediately from 35
the grate bars. The feed water passes from the pipe B into the grate
bars A and through the same to the influent pipe D, and from this pipe

page_text: into the boiler as a feed water supply. The connection of the pipe D
with the boiler is made in the ordinary manner, and the said pipe has
a check valve d of the proper form to prevent the return flow of the
water. As the feed water passes from the pipe B through the grate
bars it becomes heated, and at the same time acts to reduce the heat
of the grate bars and prevents their being consumed by the fire or
destroyed by oxidation.
In order to keep the sediment out of the feed water and prevent the
deposit of the same in the grate bars or its accumulation in the boiler,
I arrange in connection with the feed pipe B a mud drum E around the
side pipe F, which connects directly with the pipe B and conducts steam
through the drum. This side pipe is perforated at that part of its
length which is within the said drum. This peculiarity is more clearly
indicated in Figure 1, where the mud drum or box E is shown in
sectional elevation to reveal the perforated pipe F. The pipe F has a
suitable blow-off valve f.
It is plain that the feed water as it rises from the pipe B to the
heating chamber formed by the grate bars will deposit a great deal of
its lime, sand, and other sedimentary matter, and this will pass to the
side pipe F and the drum E. In order to wash out the said drum the
operator opens the jet pipe valve c, the inflowing jet of steam or of steam
and hot water from the boiler striking against the feed pipe flow in B
will cause the sediment in E and F to pass out at the opened blow-off
valve f. At the same time a reflow of the water out from the grate bars
and influent pipe D cannot take place whilst the necessary feed flow
through the grate bars still occurs owing to the equilization of pressures
in the pipe A, B, C, and D.
In order to make the grate bars removeable with as little damage as
possible in case one bar is disabled, the said bars consist principally of
the usual wrought-iron pipe part A¹ joined by a screw or flange joint
with cast-iron heads A2, the heads of two adjoining bars abut at the
edge a, and to make a packed joint a double-cone packing ring a¹ is
inserted; a bolt a² makes the joint perfect, as more clearly appears in
Figure 4.
The construction of all of the said parts is simple, insuring great
durability, and the arrangement of the whole device with the check
valves ensures great safety, whilst the operation of the whole is such
that the loss of heat is avoided to a great degree..

page_text: Having thus fully described the said Invention as communicated to
me by my foreign correspondent, I claim,-
First. The combination of the feed pipe B, jet pipe C, grate A, and
influent D, with the valves or stop-cocks, substantially as set forth.
Secondly. The combination of the feed pipe B, jet pipe C, side
pipe F, drum E, grate A, and influent D, and the valves and stop-cocks,
substantially as set forth.
In witness whereof, I, the said William Robert Lake, have hereunto
set my hand and seal, this Twenty-sixth day of November, in the
year of our Lord One thousand eight hundred and seventy.
Witness,
W. J. Lowe.
WILLIAM ROBERT LAKE. (L.S.)