IMPROVEMENTS IN LOCOMOTIVE AND OTHER FURNACES, AND IN HEATING WATER TO BE SUPPLIED' TO STEAM BOILERS
Year: 1857

page_text: LETTERS PATENT to Daniel Evans, of 15, Railway Terrace, New Town,
Stratford, in the County of Essex, for the Invention of "IMPROVEMENTS
IN LOCOMOTIVE AND OTHER FURNACES, AND IN HEATING WATER TO BE SUPPLIED'
TO STEAM BOILERS."
Sealed the 15th December 1857, and dated the 23rd June 1857.
PROVISIONAL SPECIFICATION left by the said Daniel Evans at the
Office of the Commissioners of Patents, with his Petition, on the 23rd
June 1857.
I, DANIEL EVANS, of 15, Railway Terrace, New Town, Stratford, in the
County of Essex, do hereby declare the nature of the Invention for "IMPROVE-
MENTS IN LOCOMOTIVE AND OTHER FURNACES, AND IN HEATING WATER TO BE
SUPPLIED TO STEAM BOILERS," to be as follows:-
This Invention has for its object improvements in locomotive and other
furnaces, and in heating water to be supplied to steam boilers. For these
purposes, in place of using the ordinary grating of fire bars heretofore generally
employed to support the fuel, a hollow box or platform suitable for containing
water is used; through this hollow box or platform as many tubes are fixed
as will admit sufficient air to support the combustion of the fuel laid on the
platform or box. Water is supplied to the box or platform by means of a
pipe connected with the tender, or with any other cistern containing water,.

page_text: such pipe being connected with the lower part of the platform or box.
Another pipe connected with the box or platform, takes off the more highly-
heated water and returns it to the tender or cistern, or other vessel from which
a steam boiler is supplied.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Daniel Evans in the Great Seal Patent Office on the
23rd December 1857.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, DANIEL
EVANS, of 15, Railway Terrace, New Town, Stratford, in the County of Essex,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-third day of June, in the year of our Lord
One thousand eight hundred and fifty-seven, in the twenty-first year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Daniel Evans, Her special licence that I, the said Daniel Evans, my
executors, administrators, and assigns, or such others as I, the said Daniel
Evans, 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 "IMPROVEMENTS IN LOCOMOTIVE AND
OTHER FURNACES, AND IN HEATING WATER TO BE SUPPLIED TO STEAM BOILERS,"
upon the condition (amongst others) that I, the said Daniel Evans, Daniel
Evans, my executors or administrators, by an instrument in writing under my,
or 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.
"
NOW KNOW YE, that I, the said Daniel Evans, do hereby declare
the nature of the said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement thereof, that is to say:-
This Invention has for its object improvements in locomotive and other
furnaces, and in heating water to be supplied to steam boilers. For these
purposes, in place of using the ordinary grating of fire bars heretofore generally

page_text: employed to support the fuel, a hollow box or platform suitable for containing
water is used; through this hollow box or platform as many tubes are fixed
as will admit sufficient air to support the combustion of the fuel laid on the
platform or box. Water is supplied to the box or platform by means of a
pipe connected with the tender, or with another cistern containing water, such
pipe being connected with the lower part of the platform or box: Another
pipe connected with the box or platform 'takes off the more highly heated
water and returns it to the tender, or cistern, or other vessel from which a
steam boiler is supplied.
Having thus stated the nature of my Invention, I will proceed more fully
to describe the manner of performing the same.
DESCRIPTION OF THE DRAWING.
Figure 1 is a vertical section of the fire box of a locomotive steam engine
boiler having my Invention applied thereto; Figure,2 shows a plan thereof
in section; Figure 3 shews the upper end in section of one of the tubes used
in the hollow water box applied in place of the ordinary grating of fire bars;
and Figure 4 shows a section of the valve box to the inlet pipe, by which
water flows from the tender or other cistern or vessel to the hollow box used
to support the fuel in place of the ordinary fire bars. In each of these
Figures the same letters are used to indicate the same parts. A, A, is the
fire box; B is the hollow perforated water box or platform, on which the fuel
is supported in place of the ordinary grating of fire bars. This box is carried
by necks or axes C, C, at one end, or otherwise, and by the levers or arms D,
or otherwise, on the axis E at the other end, by which that end can be
lowered in order to get rid of the fire when desired. The hollow box or
platform B is made of wrought iron or other suitable metal, and it has
numerous perforations, through which tubes are introduced, which are fixed at
top and bottom to the upper and lower plates of the hollow box or platform B.
The tubular passage b, b, may be cylindrical or of other forms. In Figure 1
some are shewn of a circular section, and others of an oblong section; it is
however, preferred that the tubes b, b, should be cylindrical, and fixed at their
lower ends in the bottom plate by à mandril being driven into the tube, which
extends the tube, and renders the joint steam-tight by the aid of a caulking
tool, the upper ends being fixed in the upper plate by ferrules or rings driven
in, as shewn at Figure 3, the interior of the upper end of the ferrule or ring
at.its upper end being of less diameter than that at its lower end, as shewn.
Water is supplied to the hollow box or platform from a tank or cistern F,
carried by the tender or otherwise. G is the supply pipe, which is made

page_text: flexible in part of its length by means of a vulcanized india-rubber pipe
joining the two ends of the pipe G, or the pipe may be rendered flexible by
other means. One end of the pipe G is connected to the under side of the
hollow box or platform B, the other end is connected with the tank or
cistern F, where there is fixed a valve box H, shewn full size in section at
Figure 4, the valve I, in which opens downwards, but closes if the pressure
in the hollow box B should drive the-water-back in the direction of the valve;
J is the return pipe from the hollow box or platform to the tank or cistern.
This pipe is also rendered flexible in part of its length, as above explained,
when used with a cistern or tank of a tender.
Having thus described the nature of my Invention, and the manner of
performing the same, I would have it understood that I do not confine myself
to the details; but what I claim is, the constructing the fire boxes of loco-
motive and other furnaces with a hollow box or platform supplied with water,
as above described, in place of the ordinary grating of fire bars.
In witness whereof, I, the said Daniel Evans, have hereunto set my
hand and seal, this Twenty-third day of December, in the year of our
Lord One thousand eight hundred and fifty-seven.
Witness,
JNO. ALCOCK.
D' EVANS. (L.S.)