An Improved Method of and Apparatus for Reducing Condensation in Steam Cylinders.
Year: 1893

page_text: Date of Application, 21st Sept., 1893
Complete Specification Left, 21st June, 1894-Accepted, 28th July, 1894
PROVISIONAL SPECIFICATION.
An Improved Method of and Apparatus for Reducing Condensation
in Steam Cylinders.
We, GEORGE GRAY RHODES, of 3 Primrose Hill, Bradford, in the County of
York, Consulting Engineer, and THOMAS METCALFE, of St. James' Ironworks,
Bradford, aforesaid, Mechanical Engineer, do hereby declare the nature of this
invention to be as follows:-
This invention has for its object an arrangement of jacketing or applying heat
to a steam cylinder externally, whereby internal condensation is reduced to a
minimum, and greater economical advantages are obtained by reducing such
condensation than has heretofore been the case with the ordinary steam jacketed
cylinder.
Our invention consists as follows.
Around the outer circumference of the steam cylinder, we apply an outer case
or jacket leaving an intermediate space between this casing and the cylinder. This
outer case, as it has no pressure to withstand, may be constructed of some light
material such as tin or sheet iron, and in order to retain the heat and prevent
radiation from same, it may be covered with some non-conducting material. The
ends of the cylinder are similarly treated by applying additional covers.
The intermediate spaces thus formed around the cylinder and at the ends, are
provided with openings, into which gas burners of the atmospheric type are
introduced, and the temperature of the cylinder thereby raised and maintained at
a temperature equal to or greater than the temperature of the steam. Openings
are provided for the exit from the jacket of the products of combustion, which
may all converge to one chimney or flue, and be conducted away as may be deemed
desirable.
The cylinder proper may be covered with asbestos, fire clay or similar material,
so that when once heated to the required temperature, the heat may be more
effectually retained and a less quantity of heat required to maintain that
temperature.
Instead of using atmospheric burners supplied by ordinary coal gas, the same
system of burner supplied by vaporized mineral oil could be used.
Dated this 18th day of September 1893.
:
J. SIDNEY CRITCHLEY,
Agent for the Applicants.
COMPLETE SPECIFICATION.
An Improved Method of and Apparatus for Reducing Condensation
in Steam Cylinders.
We, GEORGE GRAY RHODES, of 3 Primrose Hill, Bradford, in the County of
York, Consulting Engineer, and THOMAS METCALFE, of St. James' Ironworks,
Bradford, aforesaid, Mechanical Engineer, do hereby declare the nature of this
invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
This invention has for its object an arrangement of jacketing, or applying heat
to, a steam cylinder externally, whereby internal condensation is reduced to a
minimum, and greater economical advantages are obtained by reducing such

page_text: -condensation than has heretofore been the case with the ordinary steam jacketed
cylinder.
In order to explain our invention we append hereto a sheet of drawings marked
with letters of reference.
Fig. 1 of these drawings shows the cross section, and
Fig. 2 a longitudinal section of a steam cylinder arranged with our improved
jacketing arrangement.
Referring to these drawings, the letter A designates the steam cylinder of an
ordinary Corliss steam engine, around which we fix a jacket B, constructed of tin
or similar light material. This jacket is lined or covered with gannister or other
non-conducting material. In the space between the cylinder A, and the jacket B
we fix one or more atmospheric gas burners C, for the purpose of maintaining the
heat of the steam within the cylinder A. Openings are provided in the jacket for
the purpose of conducting a pipe to the burner, and opening, or outlet, D, at the
top of the jacket for the escape of the products of combustion formed by the
burner C.
The ends, or covers, of the cylinder are treated similarly to the barrel.
False covers E, lined or covered with non-conducting material, fit onto the
ends of the cylinder A. In the spaces thus formed at the ends, atmospheric gas
burners F are fixed, supplied with gas by pipes passing through false covers E.
Outlet openings G are provided for the escape of the products of combustion
formed by the burners F. The pipes D and G may be united and the products of
-combustion all conveyed to one flue or chimney.
Doore are also formed in the jackets for the purpose of lighting the burners.
In addition to lining or covering the jackets with non-conducting material, the
cylinder itself may also be covered with like material, so that, when the cylinder
is once heated up, the heat of the steam may be more thoroughly maintained and
radiation prevented.
Instead of atmospheric burners, supplied with ordinary gas, we can use, similar
burners supplied with vapourized mineral oil.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
The combination of a steam cylinder with atmospheric gas burners and outer
covers or jackets, such gas burners being fixed in a space formed between the
outside of the steam cylinder and the jackets, for the purpose of maintaining the
heat of the steam within the said cylinder, substantially as described.
Dated this 20th day of June 1894.
J. SIDNEY CRITCHLEY,
27, Kirkgate, Bradford, Agent for the Applicants.