IMPROVEMENTS IN PUMPS, AND IN APPARATUS FOR WORKING THE SAME
Year: 1860

page_text: LETTERS PATENT to George Pomeroy Dodge, of 44, Saint Paul's Church-
yard, in the City of London, Merchant and Manufacturer, for the Inven-
tion of "IMPROVEMENTS IN PUMPS, AND IN APPARATUS FOR WORKING THE
SAME." -A communication from abroad by James M. Edney, of Chambers
Street, New York, in the United States of America.
Sealed the 22nd February 1861, and dated the 30th August 1860.
PROVISIONAL SPECIFICATION left by the said George Pomeroy Dodge
at the Office of the Commissioners of Patents, with his Petition, on the
30th August 1860.
I, GEORGE POMEROY DODGE, of 44, Saint Paul's Churchyard, in the City of
London, Merchant and Manufacturer, do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN PUMPS, AND IN APPARATUS FOR WORKING
THE SAME," a communication to me from abroad by James M. Edney, of
Chambers Street, New York, in the United States of America, to be as
follows:-
This Invention relates to a peculiar construction and arrangement of pumps
for forcing water from wells or other sources lower than the place where the
motive power can be conveniently applied, and to a peculiar arrangement of
apparatus or mechanism for working such pumps.
The first part of this Invention relates to that class of force pumps wherein

page_text: the piston rod is on the suction side of the bucket or valvular piston, and
consists in combining two such buckets together back to back by means of a piston
rod common to both, in such a manner that the power to work the pumps may
be applied at a point in the piston rod between the two buckets, thereby pro-
ducing the effect of a double-acting force pump, receiving water at the middle,
and discharging it at both its extremities.
The second part of this Invention has reference to the mechanism for
applying power to the pistons of pumps, and to the construction and arrange-
inent of the air vessel,in combination with such mechanism, and consists in
combining a T-shaped lever, by which the pistons of the two pump barrels are
.moved with an air vessel to which the said lever is pivotted, the air vessel
being constructed with a central passage or opening to allow of the passage
therethrough of the vertical shank of the lever which is connected with the
piston rod of the pump, the two barrels being arranged in a line with each
other. Motion is imparted to the T-shaped lever by means of two connecting
rods, which are severally jointed to the extremities of the horizontal arms of
the lever, and are connected to the main actuating lever on the higher level at
opposite sides of its working centre. The working barrels of this pump are
intended to be submerged in the water to be elevated, and the pump acts
solely as a force pump.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said George Pomeroy Dodge in the Great Seal Patent Office
on the 28th February 1861.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
POMEROY DODGE, of 44, Saint Paul's Churchyard, in the City of London,
Merchant and Manufacturer, send greeting. .
WHEREAS Her most Excellent Majesty Queen Victoria; by Her Letters
Patent, bearing date the Thirtieth day of August, in the year of our Lord.
One thousand eight hundred and sixty, in the twenty-fourth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the
said George Pomeroy Dodge, Her special license that I, the said George
Pomeroy Dodge, my executors, administrators, and assigns, or such others
as I, the said George Pomeroy Dodge, my' executors, administrators, or
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

page_text: "
lawfully might make, use, exercise, and vend, within the United Kingdom of
Great Britain and Ireland, the Channel Islands, and Isle of Man, an Inven-
tion for "IMPROVEMENTS IN PUMPS, AND IN APPARATUS FOR WORKING THE SAME,'
a communication from abroad by James M. Edney, of Chambers Street, New
York, in the United States of America, upon the condition (amongst others)
that I, the said George Pomeroy Dodge, by an instrument in writing under
my hand and seal, should particularly 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 George Pomeroy Dodge, do hereby
declare the nature of the said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement, reference being had to the accompanying Drawings, and
to the letters and figures marked thereon, that is to say :-
The said Invention relates to a peculiar construction and arrangement of
pumps for forcing water from wells or other sources lower than the place
where the motive power can be conveniently applied, and to a peculiar
arrangement of apparatus or mechanism for working such pumps.
The first part of this Invention relates to that class of force pumps wherein
the piston rod is on the suction side of the bucket or valvular piston, and
consists in combining two such buckets together back to back by means of a
piston rod common to both, in such a manner that the power to work the
pumps may be applied at a point in the piston rod between the two buckets,
thereby producing the effect of a double-acting force pump, receiving water at
the middle, and discharging it at both its extremities.
The second part of this Invention has reference to the mechanism for
applying power to the pistons of pumps, and to the construction and
arrangement of the air vessel in combination with such mechanism, and
consists in combining a T-shaped lever by which the pistons of the two pump.
barrels are moved with an air vessel to which the said lever is pivotted, the air
vessel being constructed with a central passage or opening to allow of the
passage therethrough of the vertical shank of the lever which is connected
with the pistons of the pump, the two barrels being arranged in a line with
each other. Motion is imparted to the T-shaped lever by means of two con-
necting rods, which are severally jointed to the extremities of the horizontal
arms of the lever, and are connected to a main actuating lever on the higher
level at opposite sides of its working centre. The working barrels of this

page_text: pump are intended to be submerged in the water to be elevated, and the pump
acts solely as a force pump. .
:
And in order that the said Invention may be fully understood, I shall now
proceed more particularly to describe the same, and for that purpose I shall
refer to the several Figures on the Sheet of Drawings hereunto annexed,
the same letters of reference indicating corresponding parts in both Figures.
Figure 1 of the Drawings represents a perspective view of one arrangement
of the improved pump and actuating mechanism complete; and Figure 2 is a
vertical section of the pump and air chamber, the actuating mechanism being
only partly shewn.
A is a scantling or wooden support, to which the pump may, if-desired, be
attached with its actuating mechanism, this scantling when used being secured
to the side or centre of the well or water supply reservoir; B is an actuating
lever handle, which may be of any convenient construction; it is pivotted or
works on a centre at C, and at equal distances on each side of this working
centre are connected in any suitable manner the two rods D, D. The lower
ends of these rods are also connected to the extremities of the horizontal
arms a, a, of the T-shaped lever E, which vibrates on a fixed centre at Fon
the top of the air vessel or chamber G. An opening is made in the centre of
this chamber to admit of the free working therein of the vertical arm 6 of the
T-lever (shewn clearly in Figure 2), which arm is connected at its lower end
with the 'double pistons H, H, the intermediate portion between the pistons
being left open, so as to admit of the water entering behind and passing
through each piston into the respective pump barrels I, I, alternately during
the to-and-fro motion of the pistons. These pistons require no packing, but
they are each provided with a valve c opening inwards to the barrel, so that
the water may pass through the open valve and fill the barrel when the piston
is moving outwards, and be expelled again through the valve d into the air
vessel or chamber G at the return stroke of the piston, the valve c being at
that time closed. It is thus obvious that as one barrel is filling the other is
simultaneously emptying, so that with the aid of the air vessel G a perfectly
continuous stream or jet of water is obtained. The air vessel or chamber'G
opens into the lower end e of the metal pipe K, to which may be coupled a
hose pipe L, as shewn in the Drawing, if the pump be required as a firo
engine; when used 'simply as a water elevator the hose pipe and nozzle may,
of course, be dispensed with.
Having now described and particularly ascertained the nature of the said
Invention, and the manner in which the same is or may be used or carried

page_text: into effect, I would observe, in conclusion, that what I consider to be novel
and original, and therefore claim as the Invention secured to me by the
herein-before in part recited Letters Patent is, the general construction,
arrangement, and combination of apparatus for raising or forcing liquids, as
herein-before described.