IMPROVEMENTS IN STEAM FIRE AND OTHER PUMPING ENGINES to be as follows:-
Year: 1885

page_text: We, JAMES COMPTON MERRYWEATHER and CHRISTOPHER JOHN WALLACE
JAKEMAN, both of the Firm of Merryweather & Sons of Greenwich Road,
Greenwich, in the County of Kent, Engineers, do hereby declare the nature of
said invention for "IMPROVEMENTS IN STEAM FIRE AND OTHER PUMPING ENGINES
to be as follows:-
-
"
In a pumping engine according to this invention, in order to render the suction
and delivery valves readily accessable the suction box is made separate from the
pump barrel or barrels and is furnished with an internal diaphragm provided with
inlet openings and valves. This suction chamber is closed by a plate which is also
provided with holes or passages, closed by valves, which constitute the delivery
valves, and is provided with other holes or passages to establish communication
between the upper part of the suction chamber and the respective ends of the pump
barrel or barrels. The joints between the edges of the suction chamber and the
plate and also those between the plate and the pump casting are made as follows:
Grooves are formed in the plate to receive the edges of the said castings, and
packing such as leather is introduced into these grooves, so that the edges of the
castings take a bearing against the packing. The parts are held tightly together
by screw studs or bolts so that the packing forms water-tight joints. By this
arrangement the material used as packing is prevented from being forced out of
the place even when the pumps are working at high pressures.
The suction box is provided with the usual suction inlet and is also in
connection with an air vessel.
The steam cylinders and pump are stayed together by wrought iron or steel
stays so that all the strains are taken in the engine itself independently of its
carrying frames.
Where a double crank shaft is used with a fly-wheel, in order to obviate the
necessity of making the shaft or the wheel in two parts as heretofore has been
usual, we adopt the following construction:
Upon the shaft we forge a collar in which we form radial holes to receive the
inner ends of the spokes. Through the rim (which may be of wrought iron) we
form holes to receive the outer ends of the spokes.
The fixing of the spokes may be effected in various ways. According to one
arrangement, the holes in the collar on the shaft are formed with screw threads, and

page_text: corresponding threads are formed on the inner ends of the spokes, the outer ends
being pinned or rivetted to the rim. Another method consists in forming screw
threads in the holes in the rim and corresponding threads on the outer ends of the
spokes, which in this case would be enlarged.
.
According to our invention we construct a steam fire engine of special arrange-
ment embodying the above desired improvements, with a horizontal motor
supported on light wrought iron or steel side frames in front of a boiler of the
type described in the specification or a former Patent No 1855 A.D. 1880, granted
to Henry Merryweather and the said Christopher John Wallace Jakeman, the
cross-head and motion of the engine being also of the kind described in the said
former specification.
In the chimney a feedwater heater is or may be provided consisting of a coil of
pipe forming a lining to the chimney, and through which feedwater is forced on its
way to the boiler.
In this steam fire engine, in lieu of providing a feed pump with
a gland such as is usually employed, the plunger is made in two parts like two
pistons with interposed packing which will make a water tight fit with the interior
of the pump cylinder.
This feed pump is much lighter than one of the ordinary construction with
a gland.
The entire engine with coal bunkers, foot plate, hose tray, a driver's seat forming
a tool-box, and other parts is provided with springs, and carried on four wheels the
front wheels being arranged to "lock" entirely round the perch bolt.
W. LLOYD WISE,
Per F. J. Brougham,
Applicant's Agent.

page_text: Improvements in Steam Fire and other Pumping Engines.
We, JAMES COMPTON MERRYWEATHER, and CHRISTOPHER JOHN WALLACE
JAKEMAN, both of the firm of Merryweather & Sons, of Greenwich Road,
Greenwich, in the County of Kent, Engineers, 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 :-
In a pumping engine according to this invention in order to render the suction
and delivery valves readily accessible the suction box is made separate from the
pump barrel or barrels and is provided with an external diaphragm provided with
inlet openings and valves. This suction chamber is closed by a plate which is also
provided with holes or passages closed by valves which constitute the delivery
valves, and is provided with other holes or passages to establish communication
between the upper part of the suction chamber and the respective ends of the
pump barrel or barrels. The joints between the edges of the suction chamber and
the plate and also those between the plate and the pump casting are made as
follows:-
Grooves are formed in the plate to receive the edges of the said castings, and
packing such as leather, is introduced into these grooves so that the edges of the
castings take a bearing against the packings. The parts are held tightly together
by screw studs or bolts so that the packing forms water-tight joints. In this
arrangement the material used as packing is prevented from being forced out of
the place even when the pumps are working at high pressures.
The suction box is provided with the usual suction inlet and is also in connection
with an air vessel.
The steam cylinders and pump are stayed together by wrought iron or steel
stays so that all the strains are taken in the engine itself independently of its
carrying frames.
Where a double crank shaft is used with a fly wheel in order to obviate the
necessity of making the shaft or the wheel in two parts as heretofore has been
usual, we adopt the following construction :-
Upon the shaft we forge a collar in which we form radial holes to receive the
inner ends of the spokes. Through the rim (which may be of wrought iron) we
form holes to receive the outer ends of the spokes.
The forming of the spokes may be effected in various ways. According to one
arrangement, the holes in the collar on the shaft are formed with screw threads,
and corresponding threads are formed on the inner ends of the spokes, the outer
ends being pinned or rivetted to the rim. Another method consists in forming
screw threads in the holes in the rim and corresponding threads on the outer ends
of the spokes, which in this case would be enlarged.
According to our invention we construct a steam fire engine of special arrange-
ment embodying the above desired improvements with a horizontal motor
supported on light wrought iron or steel side frames in front of a boiler of the
type described in the specification of a former Patent N° 1855 A.D. 1880, granted
to Henry Merryweather and the said Christopher John Wallace Jakeman, the

page_text: Fig. 6 is a section to a larger scale of a portion of the joint on the suction
chamber and pump.
Referring to Fig. 1, 1 is the horizontal motor and 2 the pump connected to the
same; each of these comprises two cylinders. 2b 2b are the delivery outlets. 3 is
the boiler, 4 the main framing supporting the various parts of the engine and
mounted on wheels 5, 6, springs 7 being interposed as usual. 8 is a coil of pipe
forming a lining to the chimney and constituting a feed water heater through
which feed water is forced on its way to the boiler. This feed water heater may
in some cases be dispensed with. 9 is the feed pump. 10 is a coal bunker of
which there is one at each side and between which is situated the foot plate.
10 is a bunker for hose. 11 is the driver's seat forming also a tool box.
Referring now to Figs. 2 and 3, which shew the motor and pumps to a larger
scale, 12 is the suction box made separate from the pump barrels 13, 14 and
furnished with an interior diaphragm 15 provided with inlet openings and
valves 16. 17 is a plate whereby the suction chamber is closed. In this plate
are formed holes or passages provided with valves 18, which constitute the delivery
valves. 19. 19 are other holes or passages that establish communication between
the upper part of the suction chamber and the respective ends of the pump barrels.
20, 20, are grooves (as shewn to a larger scale in Fig. 6) formed in the plate 17 to
receive the edges 21 of the pump casting, and 22 is packing such as leather intro-
duced into the grooves so that the edges of the castings take a bearing against the
packing. 23, 23, are screws studs or bolts whereby the parts are held together so
that the packing forms water-tight joints. 24 is the suction inlet and 25 an air
vessel connected thereto or in connection there with. 26 26 are wrought iron or
steel stays whereby the steam and pump cylinders are stayed together so that all
strains are taken in the engine itself.
These stays also serve to carry the crank shaft bearings 27. 28 is the cross-head
which is of the kind described in the earlier patent hereinabove referred to. The
operation of the arrangement will be readily understood from the drawing. When
a fly wheel is used it is, according to our invention, constructed as herein before
described. An illustration of this construction is given in Figs. 4 where 29 is a
collar forged upon the shaft 30 and having radial holes formed in it to receive the
inner ends of the spokes 31. 32 is the rim of the wheel in which are formed holes
to receive the outer ends 33 of the spokes. The holes in the collar on the shaft are
formed with screw threads, and corresponding threads are formed on the inner ends
of the spokes the outer ends being pinned to the rein,

page_text: Referring to Fig. 5, which, as already stated, illustrates the construction of our
improved feed pump, 34 is the pump cylinder containing a plunger formed in two
parts 35 and 36 resembling two pistons with interposed packing 37 which will
make a water-tight fit with the interior of the pump cylinder. The upper part 35
of the plunger forms a tightening ring and screws on to a neck or smaller portion 38
of the part 36, to admit of tightening the packing.
Feed pumps of this construction may be used for various purposes.
Having described the nature of our said invention and in what manner the same
is to be performed, we hereby declare that what we claim is
1. The general arrangement and combination of parts constituting the improved
steam fire or pumping engine described with reference to the drawings.
2. In a pumping engine the arrangement of the delivery valves on a removable
plate in such a manner as to render both the suction and the delivery valves
accessible by the removal of one set of nuts or fastenings substantially as described.
3. The combination and arrangement of parts comprising the suction and
delivery chambers and plate 17 jointed to the pump castings in the manner
described and shewn.
4. The construction of a fly wheel for a pumping engine as hereinabove
described.
5. The improved feed pump substantially as described with reference to Fig. 5
of the drawinca