Improvements in Pulsating Steam Pumps.
Year: 1895

page_text: PROVISIONAL SPECIFICATION.
Improvements in Pulsating Steam Pumps.
I, WILLIAM THOMAS ELLISON, Mechanical Engineer, of 12 King Street,
Irlams-o'-th'-Height, Manchester, in the County of Lancaster, do hereby declare
the nature of this invention to be as follows:-
My invention relates to the construction of pulsating steam pumps, for pumping
all kinds of liquids, sewage, and the like. The object of my invention being to
have a double action pump in one cylindrical vessel. According to my said
invention, I form in a cylindrical vessel a division plate down its centre, thus
bisecting the circle into two semi-circles of equal area; the said division plate
acting as a condenser, which if required can be provided with a few small holes in
it, and terminating at the base, thus forming two valve chambers, and also
connecting the two steam inlet apertures at the top, at say an angle of 90° to suit
my purpose. By this means I place a valve at its centre of gravity resting on the
apex formed by the aforesaid angle thus being sensitive. I also place or arrange
that both the suction and delivery valves shall be horizontal.
Dated this 2nd day of July 1895
WILLIAM THOMAS ELLISON,
12 King Street, Irlams o' th' Height, Manchester.
Improvements in Pulsating Steam Pumps.
I WILLIAM THOMAS ELLISON, Mechanical Engineer, of 12 King Street,
Irlam's-o'-th'-Height, Manchester, in the County of Lancaster, 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 :-
My invention relates to the construction of pulsating steam pumps, for
pumping all kinds of liquids, sewage, and the like. The object of my invention
being to have a double action pump in one cylindrical conical or other suitable
vessel.
According to my said invention, I form in a cylindrical conical or other suitable
vessel a division plate down its centre, thus bisecting the circular or other section
of the vessel into two parts of equal area (the said division plate acting as
a condenser, which if required can be provided with a few small holes in it) and
terminating at the base thus forming two valve chambers, and I also connect the
two steam inlet apertures at the top by a ridge or cover at say an angle of 90° to
suit my purpose.
By this means I can place a valve resting on the apex of the ridge formed by
the aforesaid angle, the said valve thus being sensitive as it has its centre of

page_text: gravity below the point of suspension. I also prefer to place or arrange the
suction and delivery valves so that they shall both be horizontal.
In order that my invention may be clearly understood I have annexed hereto
a sheet of drawings and have marked the same with figures and letters of reference
corresponding with those in the following description.
Figs. 1 and 2 are front and side elevations in section through about the centre of
a pump made according to my invention.
Fig. 3 is a plan view thereof, and Fig. 4 is a horizontal section taken through
about the lines A-B on Fig. 2.
Figs. 1 and 2, illustrate modifications hereafter more particularly referred to.
a is the vessel or body of the pump divided by the plate or partition a+ into the
two valve chamber a¹ a². The plate or partition a+ being a wall common to both
chambers a and a² of the greatest possible area (being at the centre of the
vessel a) forms a very perfect condenser to create the vacuum necessary to raise
the water into one of the chambers (say a¹) which is filled with steam while the
other chamber (say a³) is filled with water or liquid fresh from the well or
source of supply. The division a+ may be of corrugated sheet metal or may be
provided with radiating ribs, or otherwise formed with increased condensing
surface.
6163 are the suction valves admitting the liquid from the inlet a³ to the valve
chambers a¹ a respectively, and c¹ care the respective delivery valves of the said
chambers a¹ a leading to the outlet at and since as before stated I prefer to
arrange the valves 61 b², c¹ c² horizontally, it is evidently necessary that the
vessel a must be enlarged at the lower end as seen on the drawings to allow of
such construction.
Figs. 1, 2 and 3 shew the vessel a conical but it may be cylindrical or of other
suitable form providing that the plate or partition a+ divides it into two chambers
of equal size and extends from top to bottom of the said chambers.
I may make a few holes in the division plate a+ to assist the formation of the
vacuum, and these holes should be below the level of the delivery valves c¹ c³.
I prefer however, to make or form a short passage a in the centre of the vessel a
and to form in this passage holes at or near the top and bottom thereof
communicating with the chambers a¹ a³ (see also sectional detached views
Fig. 24).
By this means when the liquid is being forced down out of one chamber (say a¹)
part will enter the short passage a through the lower hole as and will be injected
through one of the upper holes into the second chamber (say a'). Each of the
upper holes leading from this passage into the chambers a' a is or may be provided
with a short pipe a which may be if preferred made or fitted with a rose a' (see
Figs. 1 and 2). This injection of liquid from one chamber to another assists the
formation of the necessary vacuum and renders my pump very easy to start.
top of the passage as is open to the space above the delivery valves c¹³, so that
the passage a can also be supplied from this space when required by the conditions
under which the pump is working.
The
The steam inlet apertures e¹e of the two chambers a¹ a' respectively are in the
top of the vessel, which is so formed that the apertures are at an angle (of say 90°)
to each other, the top of the vessel thus forming a ridge on the apex of which the
valve ffis suspended either as seen at Fig. 1 or at Fig. 14.
The said valve f¹f opens or closes the apertures ele alternately as usual in
pulsating steam pumps, and being suspended as described and shewn, the
valve is most sensitive and quick in action, as its point of suspension is above
its centre of gravity and not below it as is usual in angular or other valves for this
purpose.
The valve ff is enclosed as usual by a cover g to which the usual steam
admission pipe may be connected at g'. If preferred the top of the vessel a may
be made separate therefrom as seen at Fig. 14, and connected thereto by bolts or
otherwise.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The construction of the body of a pulsating steam pump in the form of
a single vessel of suitable shape, provided with a vertical division plate or partition
extending from side to side thereof, and acting as a condenser from top to bottom
of the two compartments of the pump, substantially as hereinbefore described and
illustrated by the annexed drawings.
2. In a pulsating steam pump, the arrangement of steam inlets so that the valve
is suspended upon the apex of a ridge of suitable angle, in the side of which the
said inlets are situated, substantially as hereinbefore described and illustrated by
the annexed drawings.
3. The improved construction of pulsating steam pump substantially as herein-
before described and illustrated by the drawings annexed.
Dated this 1st day of April 1896.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.