IMPROVEMENTS IN AND CONNECTED WITH MARINE ENGINES AND THEIR BOILERS FOR STEAM SHIPS
Year: 1879

page_text: LETTERS PATENT to Charles Jones, of the Firm of John Jones and Sons, of
Liverpool, in the County of Lancaster, Engineers, for the Invention of
"IMPROVEMENTS IN AND CONNECTED WITH MARINE ENGINES AND THEIR
BOILERS FOR STEAM SHIPS."
Sealed the 10th February, 1880, and dated the 15th August 1879.
PROVISIONAL SPECIFICATION left by the said Charles Jones at the Office
of the Commissioners of Patents on the 15th August 1879.
CHARLES JONES, of the Firm of John Jones and Sons, of Liverpool, in the County
of Lancaster, Engineers. "IMPROVEMENTS IN AND CONNECTED WITH MARINE
ENGINES AND THEIR BOILERS FOR STEAM SHIPS."
The main objects of this Invention are so to construct engines and boilers for
use on steam ships that such ships shall be more economically and safely moved or
propelled through or over the water. For these purposes I have perfected the
several improvements hereinafter described.
First. To secure in side lever engines of ships fitted with paddle wheels or side
propellers the advantages of compounding, that is to say, using the same steam first
in a high and afterwards in a low pressure cylinder, heretofore so beneficial as regards
economy in screw propelled ships. I convert side lever engines already in use to
compound engines, or I construct compound side lever engines for paddle wheels or
side propellers in the following novel manner :-I place or fit a high pressure
cylinder on the top of or form such cylinder as part of the low pressure cylinder,
and I connect the piston rods from the pistons in both cylinders to the same cross-
head.
The following is a description of side lever engines constructed under the above
first part of my Invention:-
Secured or attached to the low pressure cylinder, or cast therewith, is a suitable
bed plate to be fixed in the desired position. The cover on the top of the said low
pressure cylinder is formed or fitted with the high pressure cylinder. The piston
rods of both the high and low pressure pistons, which reciprocate through the covers
of their respective cylinders, are attached or secured to a crosshead, which said
Price 6d1

page_text: crosshead is connected to the side levers by the usual side rods, and these latter
give motion to the paddle wheel or side propeller crank shaft. Valve gear, surface
or jet condensers, and the other necessary adjuncts of compound marine engines are
employed in any usual or convenient manner.
Second. To provide means for the easy handling of the valves of paddle wheel or
side propeller engines compounded under my Invention I employ an auxiliary steam
engine or engines combined with or connected to the valve gear, which admits and
cuts off steam to and from the high and low pressure cylinders. Such said auxiliary
engine is operated or controlled by the engineer, and is capable of working or turning
round the main engines when disconnected.
Third. To obtain a steam boiler or generator which shall be less expensive in
manufacture, shall withstand higher pressures, shall generate steam more rapidly
and shall be free from any disadvantages belonging to generators heretofore in use.
I construct a generator in the following novel manner:-A lower portion or chamber
completely filled with water is of circular or other convenient section, and forms a
fire box containing the fire grate. The said chamber is open at the top in the
centre for the passage of the heated gases and products of combustion, and is pro-
vided with a fire door or fire doors. An upper portion or steam chamber is partly
filled with water, and is connected to the lower portion by means of vertical or
nearly vertical tubes, some of which serve for the upward and some for the down-
,ward circulation of the water. The said upper chamber is of any convenient,
suitable, or desired shape. The heated gases and products of combustion pass from
the lower chamber through the opening therein, amongst and between the water
tubes in what may be called the combustion chamber, and finally around or through
openings through the top chamber, or both, to the chimney. If desired, and as I
prefer, the sides of the combustion chamber are formed of a box or boxes serving as
a feed water heater. The said generator may be vertical or partly vertical and
partly horizontal,

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Charles Jones in the Great Seal Patent Office on the 14th February
1880.
CHARLES JONES, of the Firm of John Jones and Sons, of Liverpool, in the County
of Lancaster, Engineers. "IMPROVEMENTS IN AND CONNECTED WITH MARINE
ENGINES AND THEIR BOILERS FOR STEAM SHIPS."
The main objects of this Invention are so to construct engines and boilers for use
on steam ships that such ships shall be more economically and safely moved or
propelled through or over the water. For these purposes I have perfected the several
improvements hereinafter described.
First. To secure in side lever engines of ships fitted with paddle wheels or side
propellers the advantages of compounding, that is to say, using the same steam first.
in a high and afterwards in a low pressure cylinder, heretofore so beneficial as
regards economy in screw propelled ships. I convert side lever engines already in
use to compound engines, or I construct compound side lever engines for paddle
wheel or side propellers in the following novel manner:-I place or fit a high
pressure cylinder on the top of or form such cylinder as part of the low pressure
cylinder, and I connect the piston rods from the pistons in both cylinders to the
same crosshead.
The following is a description of side lever engines constructed under the above
first part of my Invention :-
Secured or attached to the low pressure cylinder or cast therewith is a suitable
bed plate, to be fixed in the desired position. The cover on the top of the said low
pressure cylinder is formed or fitted with the high pressure cylinder. The piston
rods of both the high and low pressure pistons, which reciprocate through the covers
of their respective cylinders, are attached or secured to a crosshead, which said
crosshead is connected to the side levers by the usual side rods, and these latter
give motion to the paddle wheel or side propeller crank shaft. Valve gear, surface
or jet condensers, and the other necessary adjuncts of compound marine engines are
employed in any usual or convenient manner.
Second. To provide means for the easy handling of the valve of paddle wheel or
side propeller engines compounded under my Invention I employ an auxiliary
steam engine or engines combined with or connected to the valve gear, which admits
and cuts off steam to and from the high and low pressure cylinders. Such said
auxiliary engine is operated or controlled by the engineer, and is capable of working
or turning round the main engines when disconnected.
Third. To obtain a steam boiler or generator which shall be less expensive in
manufacture, shall withstand higher pressures, shall generate steam more rapidly, and
shall be free from any disadvantages belonging to generators heretofore in use, I
construct a generator in the following novel manner:-A lower portion or chamber,
completely filled with water, is of circular or other convenient section, and forms a
fire box containing the fire grate. The said chamber is open at the top at or near
the centre for the passage of the heated gases and products of combustion, and is
provided with a fire door or fire doors. An upper portion or steam chamber is
partly filled with water, and is connected to the lower portion by means of vertical
or nearly vertical tubes, some of which serve for the upward and some for the
downward circulation of the water. The said upper chamber is of any convenient,
suitable, or desired shape. The heated gases and products of combustion pass from
the lower chamber through the opening therein, amongst and between the water
tubes, in what may be called the combustion chamber, and finally around or through
openings through the top chamber, or both, to the chimney. If desired, and as I
prefer, the sides of the combustion chamber are formed of a box or boxes serving as
a feed water heater. The said generator may be vertical, or partly vertical and
partly horizontal.

page_text: DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a plan view, Fig. 2 a side elevation, and Fig. 3 a sectional elevation of
compound side lever engines illustrative of the first and second parts of my
Invention.
First part. a, bed plate, to which is secured the low pressure cylinder b. The
cover c of the said low pressure cylinder is cast with and forms part of the high
pressure cylinder d; e, low pressure piston rods; and f, high pressure piston rod
attached to a crosshead g. The said crosshead g is connected to the side levers h
by the rods i; j, paddle wheel or side propeller crank shaft actuated by the side
levers through the connecting rod k; l, valve gear of any suitable construction.
The low pressure piston rods e pass through guides m on the top of the low pressure
cylinder cover. If desired the crosshead g may work in guides.
I
Second part. n is an auxiliary engine started and stopped by the lever o; the
said engine n is coupled to and gives motion to the valve gear 7 of the main engines
when the said main engine gear has to be moved by hand for reversing, docking,
and other purposes.
Third part. Fig. 4 is a sectional elevation of a vertical steam generator con-
structed under my Invention. 1 is the lower chamber completely filled with water
2, upper chamber partly filled with water; 3, tubes connecting the upper and lower
chambers. The lower chamber 1 surrounds the firegrate 4, and is protected from
the action of the flames by a lining of fire brick; 5, opening through which the
flames and heated gases pass into the combustion chamber 6 amongst the tubes 3.
From the combustion chamber 6 the heated gases and products of combustion pass
around the upper chamber 2 within the casing 7 to the chimney; 8, feed water
heater surrounding the combustion chamber 6; 9, fire door. The tubes near the
outside of the generator serve for the downward circulation.
Fig. 5 is a sectional elevation, and Fig. 6 a sectional plan view of a modification
of vertical boiler under my Invention. Here the opening 5 from the fire box to
the combustion chamber is made at an angle near the centre of the lower chamber 1.
The products of combustion are led off from the side of the combustion chamber
through the chimney 10. The combustion chamber is divided into two portions by
the cast iron diaphram 11, so that the tubes 3 are directly acted on by the heated
gases and products of combustion, and serve for the upward circulation of the water
whilst the tubes 3* are protected from the direct action of the said heated gases
and products of combustion, and serve for the downward circulation.
i
Fig. 7 is a sectional elevation of a double ended marine steam generator con-
structed under the above third part of my Invention. 1, lower chamber shaped
cylindrically; 2, upper chamber; 3, tubes; 4, firegrate; 5, opening; 6, combustion
chamber; 7, casing through the space, between which and the upper chamber the
beated gases and products of combustion pass to the chimney.
Having now described and illustrated the said Invention in such manner that
'others will be enabled to carry my improvements into effect, I claim,-
First. Compound side lever engines constructed and arranged in the manner and
for the purposes set forth.
Second. In combination with engines constructed under the first part of my
Invention an auxiliary engine, operating in the manner and for the purpose set
forth.
Third. Steam generators constructed substantially as set forth.
In witness whereof, I, the said Charles Jones, have hereunto set my hand and
seal, this Thirteenth day of February, in the year of our Lord One thousand
CHARLES JONES. (L.S.)