IMPROVEMENTS IN COMBINED ENGINES AND CENTRIFUGAL PUMPS."
Year: 1875

page_text: LETTERS PATENT to John Emmet Lawrence and Edmund Vernon
Porter, both of 36, Parliament Street, Westminster, for the
Invention of "IMPROVEMENTS IN COMBINED ENGINES AND CENTRIFUGAL
PUMPS."
PROVISIONAL SPECIFICATION left by the said John Emmett Lawrence
and Edmund Vernon Porter at the Office of the Commissioners
of Patents, with their Petition, on the 24th April 1875.
Wo, JOHN EMMETT LAWRENCE and EDMUND VERNON PORTER, both
of 36, Parliament Street, Westminster, do hereby declare the nature of
the said Invention for "IMPROVEMENTS IN COMBINED ENGINES AND CENTRIFUGAL
PUMPS," to be as follows:-
-
This Invention relates to combined engines and centrifugal pumps,
and has for its object to combine together the engine and pump in a
more compact manner than heretofore, so that they may occupy less
space and be more cheaply constructed. For this purpose when a

page_text: vertical engine is used we for the smaller sizes cast the bed plate which
is to carry the engine and pump in one piece with the standard which
carries the cylinder of the engine. The cylinder we also cast in one
with the standard in the smaller sizes. The bed plate is rectangular
and the standard for carrying the cylinder rises up from one corner of it.
On the opposite corner is mounted the pump with its shaft parallel with
the crank shaft of the engine. The crank shaft of the engine projects
beyond one side of the bed plate close to which side the engine is placed.
The shaft of the pump is also prolonged to project beyond the same side
of the bed plate and carries a pinion into which gears a toothed wheel on
the crank shaft of the engine. The standard which carries the cylinder
of the engine is also cast with a bearing for the pump shaft; this
bearing stands near a third corner of the bed plate. Whilst near the
fourth corner of the bed plate is situated the delivery pipe from the
volute of the pump. The standard which carries the cylinder of
the engine is in the form of a hollow cone, and the cylinder at its upper
end is cast in one picco with it. The piston rod works downwards to
drive the crank shaft which is mounted just above the bed plate. One
side of the standard is open to allow the parts of the engine to be got at.
The eccentric for working the slido valve is between the toothed driving
wheel and the side of the bed plate.
For pumps of large dimensions the cylinder standard and bed plate
may be in separate castings.
When a horizontal engine is used we mount the engine along one
side of the bed plate with its cylinder at one end of this side, as in the
arrangement above described and with the crank shaft at the opposite
end. The cylinder in the small sizes being cast in one with the bed.
The crank shaft overhangs this side of the bed plate and carries the
eccentric for working the slide valve, and also a toothed wheel for
driving the pump. The pump is mounted near the centre of the opposite
side of the bed plate with its axis parallel to the crank axis of the engine,
and is prolonged so as to project from the same side of the bed plate as
the crank shaft, and it carries a pinion into which the toothed wheel on
the crank shaft of the engine gears. This shaft and pinion come above
the piston and connecting rod of the engine so as not to interfere with
their movement. In this arrangement also the cylinder of the engine is
for small sizes cast in one piece with the bed plate, as are also the
bearings for the pump shaft and for the crank shaft of the engine.

page_text: By combining together the engine and pump as herein-before described
we are enabled not only to drive the pump at a considerably quicker
speed than the engine, so that a pump of small dimensions may be
employed, but in addition the engine and pump are also so combined
together as to occupy much less space than heretofore when the pump
has been driven at a quicker speed than the engine. Also by casting
the cylinders in one with the bed in the smaller sizes the construction is
greatly cheapened.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Emmett Lawrence and Edmund Vernon
Porter in the Great Scal Patent Office on the 21st October
1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, wc, JOHN
EMMETT LAWRENCE and EDMUND VERNON PORTER, of 36, Parliament
Street, Westminster, sond greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-fourth day of April, in the
year of our Lord One thousand cight hundred and soventy-five, in the
thirty-eighth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto us, the said John Emmett Lawrence and
Edmund Vernon Porter, Her special license that we, the said John
Emmett Lawrence and Edmund Vernon Porter, our executors, admini-
strators, and assigns, or such others as we, the said John Emmett
Lawrence and Edmund Vernon Porter, our exccutors, administrators, and
assigns, should at any time agree with, and no others, from time to
time and at all times thereafter during the term therein expressed,
should and lawfully might make, use, exercise, and vend, within the
United Kingdom of Great Britain and Ireland, the Channel Islands,
and Isle of Man, an Invention for "IMPROVELIENTS IN COMBINED ENGINES
AND CENTRIFUGAL PUMPS," upon the condition (amongst others) that we,
the said John Emmett Lawrence and Edmund Vernon Porter, our
executors or administrators, by an instrument in writing under
or their hands and scals, or under the hand and seal of one of us or
them, should particularly describe and ascertain the nature of the said
Invention, and in what manner the same was to be performed, and

page_text: cause the same to be filed in the Great Seal Patent Office within six
calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that we, the said John Emmett Lawrence and
Edmund Vernon Porter, do hereby declare the nature of the said Inven-
tion, and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement thereof,
that is to say :-
This Invention relates to combined engines and centrifugal pumps,
and has for its object to combine together the engine and pump in a
more compact manner than heretofore, so that they may occupy less space
and be more cheaply constructed. For this purpose when a vertical
engine is used, wo in some cases for the smaller sizes cast the bed plate
which is to carry the engine and pump in one piece with the standard
which carries the cylinder of the engine. The cylinder we also cast in
one with the standard in the smaller sizes. The bed plate is rectangular
and the standard for carrying the cylinder rises up from near one corner
of it. On the opposite corner is mounted the pump with its shaft
parallel with the crank shaft of the engine. The crank shaft of the
engine projects beyond one side of the bed plate close to which side the
engine is placed. The shaft of the pump is also prolonged to project
beyond the same side of the bed plate and carries a pinion into which
gears a toothed wheel on the crank shaft of the engine. The standard
which carries the cylinder of the engine is also in some cases cast with a
bearing for the pump shaft; this bearing stands near a third corner of
the bed plate; whilst near the fourth corner of the bed plate is situated
the delivery pipe from the volute of the pump. The standard which
carries the cylinder of the engine is in the form of a hollow cono, and
the cylinder at its upper end is in some cases cast in one piece with it.
The piston rod works downwards to drive the crank shaft which is
mounted just above the bed plate. One or both sides of the standard
are open to allow the parts of the engine to be got at. The eccentric
for working the slide valve is between the toothed driving wheel and the
side of the bed plate.
For pumps of large dimensions the cylinder standard and bed plate are
in separate castings.

page_text: arrangement above described, and with the crank shaft at the opposite
end. The cylinder in the small sizes being in some cases cast in one
with the bed. The crank shaft overhangs this side of the bed plate and
carries the eccentric for working the slide valve, and also a toothed
wheel for driving the pump. The pump is mounted near the centre of
the opposite side of the bed plate with its axis parallel to the crank axis
of the engine, and is prolonged so as to project from the same side of
the bed plate as the crank shaft, and it carries a pinion into which the
toothed wheel on the crank shaft of the engine gears. This shaft and
pinion come above the piston and connecting rod of the engine so as not
to interfere with their movement. In this arrangement also the cylinder
of the engine is for small sizes in some cases cast in one piece with the
bed plate, as are also the bearings for the pump shaft and for the crank
shaft of the engine.
By combining together the engine and pump as herein-before described
we are enabled not only to drive the pump at a considerably quicker
speed than the engine, so that a pump of small dimensions may be
employed, but in addition the engine and pump are also so combined
together as to occupy much less space than heretofore when the pump
has been driven at a quicker speed than the engine.
Figure 1 of the Drawings hereunto annexed shows a plan view and
Figure 2, an elevation of an engine and centrifugal pump combined
together in the manner herein-before first described. A is the bed plate
with the standard B at one end carrying the cylinder of the steam
3 engine; O is the pump at the opposite corner with its shaft parallel with
the crank shaft of the steam engine, and geared to it by toothed
wheels D, D, at one side of the bed plate, the pump shaft being supported
in a bearing carried by the standard B or by the bed plate; E is the
delivery pipe.
Figure 3 is a plan view, and Figure 4, an elevation of a centrifugal
pump combined with a horizontal engine in the manner herein-before
described. A is the cylinder of the steam engine at the end of one side
of the bed plate B; O is the crank shaft at the opposite end of the bed
plate; D is the centrifugal pump near the centre of the opposite side of
ō the bed plate, its shaft E being parallel with the crank shaft C, and
above the piston and connecting rods of the engine so as not to interfero
with their movement; F, F, are toothed wheels by which the shafts B
and D are geared together.

page_text: In both of the combined arrangements shewn in the Drawings the
centrifugal pump is constructed in the manner described in the Specifi-
cation of a previous Patent granted to us, No. 791, in the present year,
but other well known constructions of centrifugal pumps may be
similarly combined with a steam engine and bed plate.
Having thus described the nature of our Invention and the manner of
performing the same, we would have it understood that we claim,―
First. The combined arrangement of parts constituting a combined
engine and centrifugal pump, substantially as herein-before described
with reference to Figures 1 and 2 of the Drawings annexed.
Second. The combined arrangement of parts constituting a combined
engine and centrifugal pump, substantially as herein-before described
with reference to Figures 3 and 4 of the Drawings annexed.
In witness whereof, we, the said John Emmett Lawrence and
Edmund Vernon Porter, have hereunto set our hands and seals, 1
this Nineteenth day of October, in the year of our Lord One
thousand eight hundred and seventy-five.