IMPROVEMENTS IN STEAM PUMPS CONSISTING IN THE APPLICATION THERETO OF AN IMPROVED METHOD OF CONDENSING THE EXHAUST STEAM to be as follows:
Year: 1884

page_text: I ROWLAND RACKHAM of The Foundry Works, Walton on the Naze in the
County of Essex Engineer do hereby declare the nature of my invention for
"IMPROVEMENTS IN STEAM PUMPS CONSISTING IN THE APPLICATION THERETO OF
AN IMPROVED METHOD OF CONDENSING THE EXHAUST STEAM to be as follows:-
"
This Invention has for its object improvements in steam pumps.
Steam pumps are often employed in positions in which the discharge of the
exhaust steam into the air would cause inconvenience.
To avoid this and to profitably employ the steam I provide a chamber upon
the suction pipe of the pump into which I lead the steam by an annular orifice in
such manner that the steam may surround the ascending water. The steam is
condensed and a part of its energy is utilized in propelling the ascending column
of water.
CARPMAEL & Co.,
Agents for the Applicant.
I ROWLAND RACKHAM of the Foundry Works Walton-on the Naze in the
County of Essex Engineer do hereby declare the nature of my invention for
"IMPROVEMENTS IN STEAM PUMPS CONSISTING IN THE APPLICATION THERETO OF
AN IMPROVED METHOD OF CONDENSING THE EXHAUST STEAM
and in what manner
"1
the same is to be performed to be particularly described and ascertained in and
by the following statement:-
This Invention has for its object improvements in steam pumps.
Steam pumps are often employed in positions in which the discharge of the
exhaust steam into the air would cause inconvenience.

page_text: To avoid this and to profitably employ the steam 1 provide a chamber upon the
suction pipe of the pump into which I lead the steam by an annular orifice in
such manner that the steam may surround the ascending water. The steam is
condensed and a part of its energy is utilized in propelling the ascending column
of water.
In order that my said Invention may be most fully understood and readily
carried into effect I will proceed to describe the Drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a vertical section taken through the pump cylinder of a steam pump.
Figure 2 is a vertical section through one of the valve boxes.
A is the pump
cylinder or barrel. B is the suction pipe. C is the chamber in connection there-
with and D is an annular orifice to which the exhaust steam from the steam
cylinder is led by the pipe E. In issuing from the orifice D and mixing with the
water ascending by the suction pipe B the exhaust steam is condensed and a
portion of its energy is utilised in propelling forward the ascending column of
water. The chamber C is continued along the side of the two valve boxes one of
which is behind and the other in front of the pump cylinder or barrel A.
In either valve box the water ascends by the passage F through a suction valve
which is placed at G and so to the space H which is in communication with the
upper or lower end of the pump barrel A as the case may be by a passage situato
between the valve box and the cylinder or barrel.
At K is the delivery valve, through which the water is delivered into the outlet
passage L which is common to the two valve boxes, M is an air vessel which also
serves as a bonnet to the valve box, and gives easy access to the valves.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed, I declare that what
I claim is
1. The method herein described of condensing the exhaust steam in a steam
pump consisting in conducting the same into a chamber upon the suction of the
pump substantially as herein described.
2. The admission of the exhaust steam to the said chamber upon the suction by
an annular orifice so as to ensure at once its immediate condensation, and that its
energy shall be efficiently imparted to the water passing through the pump.
3. The apparatus described and illustrated by the annexed Drawings, for
condensing the exhaust steam in a steam pump.
Dated this 20th dow of To 10OK