MENTS IN STEAM GENERATORS
Year: 1882

page_text: PROVISIONAL SPECIFICATION left by the said James Jones at the Office
of the Commissioners of Patents on the 7th January 1882.
JAMES JONES of Liverpool in the County of Lancaster, Engineer,
MENTS IN STEAM GENERATORS"
"
'IMPROVE-
My Invention relates to horizontal steam generators of the class arranged to
allow the flames and heating gases to act primarily on the exterior of the shell,
subsequently on the walls of a combustion chamber and afterwards in fire tubes,
and consists of novel combinations of parts adapted to secure high steaming
efficiency, avoidance of unequal expansion and contraction of the shell and parts,
proper circulation of water, ready manufacture by existing tools and appliances
and durability of parts.
The forward part of the generator is made cylindrical or nearly so and is
provided with fire tubes which lead from a combustion chamber towards the back
hercafter mentioned to an uptake in front. The said horizontal or nearly hori-
zontal part is joined to another part of larger size, by preference elliptical, and in
the latter the combustion chamber is formed. The said larger part is led
downwards to a point by preference below the fire bars and consequently 'serves
as a supporting foot and makes the walls of the combustion chamber
walls." The fire grate is under the forward part with the necessary brick or other
walls and the generator is provided with the usual fittings and parts. The shell,
combustion chamber and fire tubes or flues are corrugated when required.
" water
In the above a boiler fired at one end is described but as will be obvious thero
may be fire grates at each end in which case one combustion chamber may serve
for both or the combustion chambers may be separate with a water partition
between or by water tubes or ways.
In some cases conical or other water tubes are fitted so as to cross in the
combustion chamber or chambers. Air tubes are also some times provided to
admit air into the combustion chamber.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said James Jones in the Great Seal Patent Office on the 7th July
1882.
JAMES JONES of Liverpool in the County of Lancaster, Engineer.
MENTS IN STEAM GENERATORS "
"6
IMPROVE
My Invention relates to horizontal steam generators of the class arranged to
allow the flames and heating gases act primarily on the exterior of the shell,
subsequently on the walls of a combustion chamber and afterwards in fire tubes
and consists of novel combinations of parts adapted to secure high steaming
efficiency, avoidance of unequal expansion and contraction of the shell and parts,
proper circulation of water, ready manufacture by existing tools and appliances
and durability of parts.
The forward part of the generator is made cylindrical or nearly so and is
provided with fire tubes which lead from a combustion chamber towards the back
hereafter mentioned to an uptake in front. The said horizontal or nearly hori-
zontal part is joined to another part of larger size, by preference elliptical, and in
the latter the combustion chamber is formed. The said larger part is led
downwards to a point by preference below the fire bars and consequently serves
as a supporting foot and makes the walls of the combustion chamber "water
walls." The fire grate is under the forward part with the necessary brick or other
walls and the generator is provided with the usual fittings and parts. The shell
combustion chamber and fire tubes or flues are corrugated when required.
In the above a boiler fired at one end is described, but as will be obvious there
may be fire grates at each end in which case one combustion chamber may serve
for both or the combustion chambers may be separate with a water partition
between or by water tubes or ways.
In some cases conical or other water tubes are fitted so as to cross in the
combustion chamber or chainbers. Air tubes are also sometimes provided to
admit air into the combustion chamber.
DESCRIPTION OF THE DRAWINGS
Fig. 1 is a longitudinal section, and fig. 2 a transverse view partly in section of
a steam generator constructed under my Invention. a forward part of generator
made cylindrical and provided with fire tubes which lead from the combustion
chamber c near the back to the uptake d in front. e elliptical rear portion of the
generator joined to the forward part a and having the combustion chamber c
formed therein. The portion e is flush with the top of a and projects or hangs
down beneath it so as to form a foot or support to the generator and a water back
to the furnace. The fire bars f are carried in the usual manner. g furnace walls.
Two furnaces h and h¹ are shown separated by the mid feather or wall i. jj are
openings leading from the furnaces h. . into the combustion chamber c k steam
chest. The generators are constructed of wrought iron or steel rivetted in the
usual or any suitable way. Water tubes may be fitted in the combustion chamber
to promote circulation and air ways and regulators may be provided to ensure
uniform aud complete combustion.
Fig 3 is a longitudinal section, and fig 4 an end view partly in section of a
stenin generator constructed substantially as set forth under figs. 1 and 2 the
same letters denoting like parts. Here the top end of the combustion chamber c is
rectangular instead of being curved and the openings jj' from the furnaces to the
combustion chamber are irregular in outline instead of circular.

page_text: Figs. 5 and 6 are longitudinal and transverse views. a steam generators
constructed substantially ns set forth under figs. 3 and 4 with the exception
that the combustion chamber c is divided by a midfeather or water division 2.
The above six views show steam generators fitted or provided with furnaces
fired at one end only.
Fig 7 is a longitudinal, and fig 8 a transvorse view of a steam generator
having furnaces at each end. a a circular generator shells each joined to the
central elliptical shell c containing the combustion chamber c. bb fire tubes
leading from the combustion chamber c to the uptakes d d'. j. j'. openings leading
from the furnaces h. h¹. to the combustion chamber c, b fire tubes. In this modi-
fication the furnaces h h are not divided by a midfeather or wall as in the
hereinbefore described steam generators, 7 water circulation tube in the combustion
chamber c.
Having now described and particularized the nature of the said Invention so
that others will be enabled to carry the said improvements into effect I claim.-
First. Steam generators constructed substantially as herein set forth.
Second The shells a and e, combustion chamber c. fire tubes b and furnaces
combined and arranged substantially as herein set forth.
In witness whereof I the said James Jones have hereunto set my hand and
seal this Fifth day of July in the year of our Lord, One thousand eight
hundred and eighty two.
JAMES JONES. (L.S.)