IMPROVEMENTS IN PUMPS AND FIRE ENGINES
Year: 1866

page_text: LETTERS PATENT to Hyde Bateman, of Barnes, in the County of Surrey,
Surveyor, for the Invention of "IMPROVEMENTS IN PUMPS AND FIRE
ENGINES."
Sealed the 28th May 1867, and dated the 30th November 1866.
PROVISIONAL SPECIFICATION left by the said Hyde Bateman at the
Office of the Commissioners of Patents, with his Petition, on the 30th
November 1866.
I, HYDE BATEMAN, of Barnes, in the County of Surrey, Surveyor, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN PUMPS
AND FIRE ENGINES," to be as follows:-
The pump which forms the subject of the present Invention consists of
two dish-shaped circular parts, which are connected together by their flanges
so as to form a water chamber, through which passes transversely a horizontal
rocking shaft to which is adapted the working piston or pistons of the
pump.
The pump chamber is divided into two parts by two stationary stops
which extend from the central shaft to the inner periphery of the water
chamber; each of the compartments formed by these stationary stops is
divided into two chambers, in which work the pistons which are mounted on
the vibrating .shaft; above the pump chamber is placed a water chamber
which is divided by a vertical partition into two compartments, to each of
which is adapted an inlet and also an outlet valve, the valves being placed one

page_text: above the other in each compartment. The piston or pistons consist simply
of flat metal plates made to fit the internal diameter of the pump, and in each
of these plates is made a water passage which passes through the central shaft
of the pump. The edges of the pistons are provided with a proper hempen
or other packing so as to cause them to work water-tight in the cylinder, as is
usual with all pumps. It has been stated that the pump chamber is divided
by the stationary stops into two parts, and these two divisions are subdivided
by the reciprocating pistons which extend from side to side of the cylinder,
the central shaft being between them. A passage is also made from the
anterior portion of each piston to the posterior portion of the other. There
are two of these passages, the one being the reverse of the other, and both
pass through the central shaft. It will now be understood that as the central
shaft rocks in its bearings the pistons will vibrate on their centre of motion,
and in so doing will draw down the water through the suction valve in one of
the compartments of the water chamber, and will also force forward the water
in the other compartment or subdivision of the water chamber and cause it
to pass through one of the exit valves; at the same time water will rush into
the opposite compartment of the water chamber and pass into the pump
chamber behind the advancing piston, and will fill not only the pump chamber
but the water chamber also; these chambers will therefore also be kept
primed. On the return stroke of the piston the water will be forced out of the
exit valve of the first compartment or subdivision of the water chamber, and
will draw or suck in water through the suction valve in the other chamber.
Two water passages, one for the supply to the pump and one for the eduction
water, are made in the casing of the pump, and the valve boxes of the pump
are connected with these induction and eduction passages. One important
feature of the pump consists in the construction and arrangement of the
valves, which are so arranged that access to them may be readily obtained,
and they may be removed and repaired when required without taking the
pump to pieces, and in some cases without necessarily stopping the action
of the pump.
To this end the induction and eduction valves are arranged
one above the other at the upper part of the water chamber, and the upper-
most one is made slightly larger than the one beneath, so that upon lifting out
the upper one the lower one may be drawn up through it. Access to these
valves is obtained by means of a screw plug adapted to a hole in the top of
the water chamber immediately above the valves, and this hole is large
enough to admit of the two valves being drawn up through it. In order to
start the pump it will be necessary to remove one of the screw plugs and fill
the water chamber with water, and if there be no leakage the pump will

page_text: always remain primed and ready for use. It will therefore be understood
that by causing the piston to vibrate in the pump chamber by means of a
handle outside a continuous stream of water may be kept up, as the pump is
double acting and may be provided with an air vessel in the ordinary way.
It will be obvious that a crank or other gearing may be adapted to the
vibrating central shaft, so that any convenient motive power may be applied
thereto in order to work the pump.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Hyde Bateman in the Great Seal Patent Office on the 30th
May 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HYDE
BATEMAN, of Barnes, in the County of Surrey, Surveyor, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirtieth day of November, in the year of our
Lord One thousand eight hundred and sixty-six, in the thirtieth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Hyde Bateman, Her special licence that I, the said Hyde
Bateman, my executors, administrators, and assigns, or such others as I, the
said Hyde Bateman, my executors, 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 "IMPROVEMENTS IN
PUMPS AND FIRE ENGINES," upon the condition (amongst others) that I, the
said Hyde Bateman, my executors or administrators, by an instrument in
writing under my, or their, or one of their hands and seals, should parti-
cularly describe and ascertain the nature of the said Invention, and in what
manner the same was to be performed, and 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 I, the said Hyde Bateman, do hereby declare the
nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement, reference being had to the Drawing hereunto annexed, and to the
letters and figures marked thereon (that is to say):
The pump which forms the subject of the present Invention consists in its

page_text: simplest form of two dish-shaped circular parts, which are connected together
by their flanges so as to form a water chamber, through which passes trans-
versely a horizontal rocking shaft to which is or are adapted the working.
piston or pistons of the pump.
In the accompanying Drawing, Fig. 1 is an external side elevation of a
double-cylinder pump constructed according to my Invention; Fig. 2 is an
end elevation of the same; Fig. 3 is a longitudinal vertical section of the
pump; Fig. 4 is a vertical section of the valve box and water chamber;
and Fig. 5 is a section of one of the cylinders and part of the water
chamber.
"
The
pump chamber, as seen in Fig. 5, is divided into two parts A and B
by two stationary stops a, a, which extend from the central shaft 6 to the
inner periphery of the water chamber. Each of the compartments A and B
formed by these stationary stops is divided into two chambers, in which work
the pistons c, c', which are mounted on the central vibrating shaft b. Above
the pump chamber is placed a water chamber C, which is divided by a vertical
partition d into two compartments, as seen best at Fig. 5, to each of which is
adapted an inlet valve e and also an outlet valve f, the valves f and e being
placed one above the other in each compartment of the water chamber. The
piston or pistons c, c², consist simply of flat metal plates made to fit the internal
diameter of the pump, and in each of these plates is made a water passage
which passes through the central shaft 6 of the pump, as indicated by dotted
lines in Fig. 5. The edges of the pistons are provided with a proper hempen
or other packing so as to cause them to work water-tight in the cylinder, as is
usual with all pumps. It has been stated that the pump chamber is divided
by the stationary stops into two parts A and B, and these two divisions are
subdivided by the reciprocating pistons c, c', which extend from side to side of
the cylinder, the central shaft 6 being between them. A passage is also made
from the anterior portion of each piston to the posterior portion of the other.
There are two of these passages, the one being the reverse of the other, and
both pass through the central shaft, as indicated by the red and black dotted
lines in Fig. 5. It will now be understood that as the central shaft 6 rocks in its
bearings the pistons c, c', will vibrate in their centre of motion, and in so doing
will draw the water from the suction pipe h through one of the valves e or e¹
into one of the compartments A or B of the pump chamber, and will also
force forward the water in the other compartment or subdivision of the pump
chamber and cause it to pass away through one of the exit valves f, f', and
out through the delivery ports i, i. At the same time water will rush into the
opposite compartment of the water chamber and pass into the corresponding

page_text: compartment of the pump chamber behind the advancing piston c or c', and
will fill not only the pump chamber but the water chamber also, these
chambers will therefore always be kept primed; on the return stroke of the
piston the water will be forced out of the exit valve f of the first compart-
ment or subdivision of the water chamber and will draw or suck in water
through the suction valve e in the other chamber. Two water passages, one
for the supply to the pump and one for the eduction water are arranged in
any convenient manner, and the valve boxes of the pump are connected with
these induction and eduction passages. One important feature of the pump
consists in the construction and arrangement of the valves, which are so
arranged that access to them may be readily obtained, and they may bé
removed and repaired when required without taking the pump to pieces, and
in some cases without necessarily stopping the action of the pump. To this
end the induction and eduction valves are arranged one above the other at the
upper part of the water chamber, as seen at Fig. 4, and the uppermost ones
for f' are made slightly larger than those beneath, so that upon lifting out
the upper valve for f¹ either of the lower ones e or e² may be drawn up
through it. Access to these valves is obtained by removing the top plate or
cover g of the water chamber or by means of a screw plug adapted to a hole in
the top or cover of the water chamber immediately above the valves, and this
hole is large enough to admit of the two valves being drawn up through it. In
order to start the pump it will be necessary to remove one of the screw plugs
or a priming plug provided for the purpose, and the water chamber may then
be filled with water, and if there be no leakage the pump will always remain
primed and ready for use. It will therefore be understood that by causing
the pistons c, c¹, to vibrate in the pump chamber by means of a handle outside
a continuous stream of water may be kept up as the pump is double acting,
and may be provided with an air vessel in the ordinary way. It will be
obvious that a crank or other gearing may be adapted to the vibrating
central shaft b, so that any convenient motive power may be applied thereto in
order to work the pump.
Having now described my Invention of "Improvements in Pumps and
Fire Engines," and having explained the manner of carrying the same into
effect, 1 claim as the Invention secured to me by Letters Patent as
aforesaid,―
First, arranging the water chamber and valve chamber above the pump
chamber so that the pump may always remain primed even if the valves
should leak.
Second, arranging the valves one above another in such a manner that

page_text: access to them may be obtained, and they may be removed without taking the
pump to pieces.
Third, making a communication from the anterior portion of one piston to
the posterior portion of the other piston by means of passages through the
central shaft, and vice versâ, in the manner and for the purpose herein set
forth.
In witness whereof, I, the said Hyde Bateman, have hereunto set my
hand and seal, the Thirtieth day of May, in the year of our Lord
One thousand eight hundred and sixty-seven.
Witness,
J. W. MOFFATT,
66, Chancery Lane.
HYDE BATEMAN. (L.s.)