MENTS IN THE METHOD OF APPLYING HEAT TO THE HEATING OF WATER FOR FEEDING OR SUPPLYING THE BOILER OR BOILERS OF STEAM ENGINES, OR FOR OTHER PURPOSES
Year: 1852

page_text: PROVISIONAL SPECIFICATION left by James Mayelston at the
Office of the Commissioners of Patents, with his Petition, on the
2nd October 1852.
(Void by reason of notice to proceed not having been given within the
time.prescribed by the Act.)
d
I, JAMES MAYELSTON, of Elloughton, in the County of York, Gentle-
“IMPROVET
man, do hereby declare the nature of the said Invention for ")
MENTS IN THE METHOD OF APPLYING HEAT TO THE HEATING OF WATER FOR
FEEDING OR SUPPLYING THE BOILER OR BOILERS OF STEAM ENGINES, OR
FOR OTHER PURPOSES." The application of this Invention to any steam
enginic on the high pressure principle to be as follows:-
24
Instead of allowing the spent steam to escape directly into the open
air, or into any flue or chimney, according to the usual practice, Icause
it to pass in the first instance into a steam chamber, having an outlet
for its final escape, which outlet. I prefer to make of a size or area
sufficient to prevent the pressure or elastic-force of the steam.in such
chamber exceeding that of the atmosphere, inasmuch as that would be
à disadvantage to the motive power of the engine; and into this steam
chamber, which by the above arrangement becomes, during the working

page_text: of the engine, constantly filled with steam of atmospheric pressure (or
thereabouts), the quantity of water which it is intended to heat is
injected or admitted by a pump or other means, and being instanta-
neously heated by contact with the steam, and then collected in a
suitable receptacle connected with such steam chamber, it is imme-
diately withdrawn therefrom by another pump or pumps, or by any.
suitable means, and transmitted to the steam boiler or boilers, or else-
where, for use. And the nature of my Invention when it is applied to
any steam engine on the low pressure or condensing principle is as
follows: Instead of adopting the usual practice of injecting into one
condensing vessel the whole quantity of water required to effect the
condensation of the spent steam, I inject or admit so much thereof as
is required for feeding any steam boiler or boilers, or so much thereof
as I desire to make hotter than the water in the ordinary condenser or
hot well, or so much thereof as for any reason I may desire to keep
distinct from such last-mentioned water, into the eduction pipe, or any
pipes which convey the spent steam from the steam cylinder to such
ordinary condenser, and I cause it to be immediately thereafter inter-
cepted or caught, either wholly or in part, by means of any suitable
receptacle, and from thence to be constantly pumped out, either wholly
or partially, or withdrawn for use without passing into such ordinary
condenser, or being mixed with any water which is or has been injected
or admitted into such ordinary condenser; or else I inject or admit the
water which I intend so to heat, or to keep distinct for the purposes
aforesaid, or any of them, into any distinct vessel or chamber, having a
communication or communications (whether with or without the inter-
vention of
valve or
any
valves) with the eduction pipe, or with any pipe or
pipes which convey the spent steam as aforesaid from the steam cylinder
to such ordinary condenser; or I inject or admit such water into any
distinct vessel or chamber having a communication or communications
through the intervention of a valve or valves with the steam cylinder
itself, such communication or communications being in any case as near
as they conveniently may be to the opening or openings through which
the spent steam escapes from the steam cylinder, which distinct vessel
or chamber I propose to call a supplementary condenser; and, lastly,

page_text: the said water, after being so injected or admitted, is to be in every
case collected by means of any suitable receptacle connected with such
supplementary condenser, and constantly withdrawn for use by a pump,
pumps, or other means, without being mixed with any water which is
or has been injected or admitted into the ordinary condenser, or which
is contained therein, or in the air pump or hot well; and I do not
confine myself to the use of one such supplementary condenser, but, if
need be, I use two or more in order to obtain heated water of different
temperatures.
I claim, firstly, the exclusive privilege of heating water by injecting
or admitting it into the spent steam of any high-pressure steam engine,
while such spent steam is passing from the eduction valve or valves of
such engine, through any steam chamber, pipe, or other suitable vessel,
towards the ouths air, or towards any flue or chimney.
And I claim, secondly, the exclusive privilege of heating water by
injecting or admitting it into the spent steam of any low-pressure or
condensing steam engine, in any manner or by any arrangement which
will admit of the subsequent separation and removal for use of such
water so injected or admitted, without being mixed with the water
contained in the ordinary condenser, air pump, or hot well of such
steam engine.
And I claim, thirdly, the exclusive privilege of using any water
heated by either of the aforesaid methods for feeding any steam boiler,
or for any other purpose.