IMPROVEMENTS IN APPARATUS FOR THE GENERATION OF STEAM AND THE UTILIZATION OF EXHAUST STEAM BY REHEATING IT
Year: 1883

page_text: LETTERS PATENT to James William Gill of 354 New John Street West
Birmingham, in the County of Warwick Printer for an Invention of
IMPROVEMENTS IN APPARATUS FOR THE GENERATION OF STEAM AND THE
UTILIZATION OF EXHAUST STEAM BY REHEATING IT
PROVISIONAL SPECIFICATION left by the said James William Gill at the
Office of the Commissioners of Patents on the 31st December 1883.
JAMES WILLIAM GILL, of 354 New John Street West Birmingham in the
county of Warwick Printer. IMPROVEMENTS IN APPARATUS FOR THE GENERATION
OF STEAM AND THE UTILIZATION OF EXHAUST STEAM BY REHEATING IT
A Coil or Coils of pipes either of Copper or iron or both or other suitable metal
is or are heated to a sufficient degree, when water is injected minutely divided in
the form of a fine spray or vapour by means of the apparatus known as a spray
producer or by any other suitable means. The steam when made is passed into a
receiver or steam chest conveniently placed over the fire which still further
increases the pressure of the steam, which thence passes into the cylinder of the
Engine or used in any way required The Exhaust steam may be passed through
the heated Coil or Coils & its pressure increased for further use
The Coil or Coils of pipes for purposes of heating are placed in and surrounded
by a gas fire produced in the ordinary way by atmospheric burners surrounded by
asbestos in any suitable form or combined with any other suitable substance or
the heating may be done in any other effective manner
The water or spray may be injected continuously or intermittently and the
supply regulated by taps or shut off wholly or partly when the exhaust steam is
being reheated
The gas used may be ordinary Coal gas or any other gas suitable to produce heat.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said James William Gill in the Patent Office on the 28th June 1884.
JAMES WILLIAM GILL of 354 New John Street West Birmingham in the
County of Warwick Printer IMPROVEMENTS IN APPARATUS FOR THE GENERATION
OF STEAM AND THE UTILIZATION OF EXHAUST STEAM BY REHEATING IT
I generate steam by injecting water in a finely sub-divided form, as spray or
vapour through suitable orifices or nozzles by means of a force pump or its
equivalent or from a head of water into a pipe or pipes previously heated by
means of a gas fire or other suitable coke or coal fire. The steam thus generated
is passed through a super-heating pipe or pipes into a reservoir which is kept in a
heated condition by passing round it, the waste heat from the fire after heating the
generating pipe or pipes From this reservoir the supply is obtained for any
purpose such as driving an engine &c: The steam after being passed through the
cylinder of the engine or otherwise used, is conveyed through the heating pipe or
pipes, and thus re-heated & utilized for further work
In carrying out my invention I use a tube or tubes of either iron, copper or
other suitable material, having closed ends, which in small sizes may preferrably
be screwed, and in large sizes provided with flanges to facilitate attachment or
removal. The tube or tubes have fixed at the end a nozzle with a small orifice or
orifices for admitting the water under pressure by a force pump or other suitable
means Upon the side of the tube or tubes I attach the lead-away nozzle or nozzles
to which is or are connected the super-heating tube or tubes, through which the
steam passes by the usual connections to the reservoir. Or I may attach the super-
heating tube or tubes to the end of the generating tube or tubes. Before the
outlet or nozzle leading to the super-heating tube or tubes I place or attach an
anti-priming diaphragm which is constructed of one or a series of perforated plates
through which the steam passes, or I may arrange to have two jets, one at either
end of the generating tube or tubes meeting each other and breaking the water
up by impact. To do this I pass one jet through the diaphragm, or I may insert
it in the side of the generating tube or tubes so arranging them that their orifices
shall be exactly in line. Or I may have two jets in one end of the generating
tube or tubes. In case of water accumulating during work, I provide an ejector,
such as Vaughan's, or any other well known water ejector, to liberate the said
water as it accumulates.
I may construct the generating tube or tubes of a horizontal or vertical form.
For the purpose of heating the tubes I employ, in the case of the vertical
arrangement a solid flame or ring atmospheric gas burner, and in the case of the
horizontal arrangement, I use a horizontal flat or jet flame atmospheric gas burner,
which, in each arrangement burns in a closed chamber of refractory material,
having suitable air inlet and an outlet for the escape of residual gases to the
reservoir jacket. I may provide a small space between the refractory material and
the tubes to be heated, or I may increase the space, and filling the said space with
asbestos or other refractory material. For large power generators I may employ
gas coke in combination with the atmospheric gas burners before mentioned, or an
ordinary coal fire may be used
Having now described my invention for improvements in apparatus for the
generation of steam, and the utilization of waste or exhaust steam by re-heating it,
I wish it to be understood that I claim
First The generating of steam from one or more jets or sprays of water
injected into one or more tubes by means of a pump or its equivalent, the said tube
or tubes previously heated by a gas fire or fires substantially as described and
set forth

page_text: Second-Connecting the generating tube or tubes with a super-heating tube or
tubes, and passing the same through the heated gas for super-heating the generated
steam, substantially as described and set forth
Third-The arrangement of an anti-priming diaphragm in connection and in
combination with the super-beating tube or tubes, substantially as described and
set forth
Fourth-The arrangement of the generating tube or tubes in combination
with the super-heating tube or tubes within a closed chamber of non-conducting
or refractory material, and heated either with gaseous or solid fuel, substantially
as described and set forth.
Fifth The utilization of the waste heat from the generating chamber, by
passing it round the steam reservoir for the prevention of radiation and
condensation
In witness whereof I the said James William Gill have set my hand and seal
this Twenty-seventh day of June, in the year of our Lord one thousand eight
hundred and eighty four.
JAMES WILLIAM GILL. (L.S.)