Improvements in Pumps.
Year: 1896

page_text: Date of Application, 25th Feb., 1896-Accepted, 18th Aor., 1896
Improvements in Pumps.
We, WILLIAM DAVIS HOOKER, of 175 South Halsted Street, Chicago,
llinois, United States of America, and WILHELM VOIT, of Eisenbahn Hotel,
Fuerstenberg on the Oder, Germany, Mechanical Engineers, do hereby declare
he nature of this invention, and in what manner the same is to be performed,
o be particularly described and ascertained in and by the following statement,
eference being had to the accompanying drawings, in which :-
Fig. 1 is a vertical central section of a pump embodying the invention.
Fig. 2 is an end view of one of the valve chests and its contained parts.
Fig. 3 is a horizontal section of one of said chests on the line 3-3, Fig. 1.
Fig. 4 is a horizontal section of the pump barrel.
Fig. 5 is a plan view of one of the valve seats.
Some features of the present invention are applicable to pumps other than double
acting, while other features are applicable only to pumps of this latter description.
The chief object of the invention is to provide a double acting pump of improved
construction that can be used in any situation where a pump is needed, but is
particularly well adapted for use in artesian wells.
Another object of the invention is to improve the construction and arrangement
of the ports and passages of double acting pumps for artesian wells to the end that
they may be made of ample capacity notwithstanding the necessarily restricted
diameter of the pump barrel and valve chests.
To these ends the invention consists in the features of novelty that are particularly
pointed out in the claims.
In the drawings we have shown the several features of the invention embodied
in a double-acting pump, and this Specification will be confined to the pump as
shown; but we desire to have it understood that we reserve to ourselves the right
to use the several features of the invention in pumps other than double-acting, so
far as they may be so used.
A represents the pump barrel; within it fits a piston B, which may be of any
desired construction and is secured to a rod C, which is suitably connected with
a single casting and comprises an
the source of power. The barrel is preferably
outer shell a, an inner shell or cylinder a¹ of less diameter, and longitudinal
partitions a dividing the annular space between said shells into passages A1 and A³,
which are called in this Specification the induction passage and eduction passage
respectively.
D is a part, hereinafter called a valve chest, the objects of which are to close
one end of the pump barrel and euclose one set of the valves. The lower end of
this chest has an opening d which may or may not be surrounded by a threaded
flange E, to whic!: may be screwed a suction pipe that may extend downward far
enough to submerge its lower end. If no suction pipe is used the lower end of the
chest should be submerged so that air will not be drawn in at the opening d, which
constitutes what is hereinafter called the suction opening, and is the only suction
opening that a pump constructed in accordance with this invention requires. The
valve chest has an outer shell F and an inner shell G of less diameter than the
outer shell, so that a space is left between them, and this space is divided by
5 longitudinal partitions finto two passages H and I, which correspond in position
and at their inner ends register with the induction and eduction passages A and A
respectively. The inner shell G is sustained in position partly by the partitions f

page_text: and partly by a transverse diaphragm J, which is so shaped that it closes the lower
end of the passage I and the lower end of a chamber g which is formed by the
inner shell, the upper ends of said passage and chamber being in open communica-
tion with the eduction passage A and the pump cylinder respectively. The
passage H, at its respective ends, is in open communication with the suction
opening d and the induction passage A'.
The inner end of the outer shell F is counterbored to receive the end of the
outer shell a of the barrel, and the inner shell G supporta an externally screw
threaded ring K, which screws into the end of the inner shell a' and draws the
barrel and valve chest together with sufficient force to form a water-tight joint.
The inner shell G is not of cylindrical shape and need not be of the exact shape
shown in the drawing. Its essential requisite in this respect is that it is suitable
for the provision of ports (hereinafter called induction ports), through which the
passage H and chamber g communicate, and other ports (hereinafter called
eduction ports) through which the chamber g and passage I communicate, and that
it leave sufficient room to accommodate the valves by which the flow of water
through said ports is controlled. We prefer also that it be of such shape that
the valve seats are of concave form, but in its broadest aspect the present inven-
tion is not limited to this latter feature. The induction ports are shown at L, the
induction valve at M and the valve seat at.m. This valve is made of a sheet of
flexible material (preferably rubber), which is normally flat but which conforms to
the convex curvature of the valve seat when it is fixed thereto by a keeper N.
This keeper extends lengthwise of the valve and is held down by screwa O that
are tapped into the valve seat between the two parallel rows of ports I. By thus
securing the valve to its seat, its edges are left free from end to end, so that a
suction within the chamber g, produced by the up-stroke of the piston, will cause
said valve to yield or lift and permit the passage of water from the induction
passage H to the chamber g. The keeper is provided with diverging flanges n
that form stops for engaging the valve and limiting its movement.
The eduction ports are shown at P, the eduction valve at Q, the valve seat at q,
the keeper at R, and the stops at r, all of these parts being similar in construction
and operation to the corresponding parta already deseribed, excepting that the
keeper is formed in two parts for convenience in putting it in place. The keeper N
is introduced through the open upper end of the chamber g, but the ring K prevents
the introduction of the keeper through the open upper end of the passage [.
For this reason it is necessary to form through the outer shell F an opening, and
this opening is closed by a countersunk screw-cap S.
We believe ourselves to be the first to arrange the valve chest at the end of the
barrel and provide it with a chamber registering with the cylinder and with
induction and eduction passages extending along the barrel, the parts being formed.
through an internal diaphragm or shell which is arranged lengthwise of the barrel
so that the water in passing through said ports moves in a direction that is transverse
to the barrel, and to provide said ports with valves which move laterally. The
advantage of this arrangement is that without increasing the diameter of the
barrel, the capacity of the ports may, if desired, be made fully equal to the suction
opening of the pump.
At the other end of the barrel is a valve chest, which has features of construc-
tion and contains parts that are similar in construction, arrangement and operation
to those of the chest already described, and similar parts or features of these two
cheats bear similar letters of reference, except that (in one instance) an exponent
(the prime mark) is added for the sake of distinction. The opening d is of
course the discharge opening and is in direct communication with the eduction
passages I, A and 1, just as the induction passages H', A' and H are in direct
communication with the suction opening d. In one instance the diaphragm J cuts
off communication between the passage I and opening d, and in the other the
diaphragm J cuts off communication between the passage H' and opening d. The
diaphragm has an opening for the passage of the piston rod, and surrounding

page_text: his opening is a screw threaded flange T, to which is screwed
ox U. To the flange E¹ is screwed the riser or discharge pipe which extends to
he desired point.
This completes the description of the improved pump the operation of which is
The up-stroke of the piston draws water
pparent to those skilled in the art.
rom the induction passage H through ports L and chamber g into the lower end
of the cylinder, and at the same time expels water from the upper end of the
ylinder through chamber g' and ports P into passage I and thence through
opening into the riser. The down stroke of the piston draws water through
passages H, A and H' and thence through ports L' and chamber g' into the upper
end of the cylinder, and at the same time expels water from the lower end of the
cylinder through chamber g and ports P into passage I, and thence through.
passages A and I¹ and opening d' into the riser.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, we declare that what we-
claim is :-
1. In a pump, the combination with the cylinder, of a valve chest located at
the end of and in line with the cylinder and having an outer shell, an inner shell
and partitions dividing its interior into induction and eduction passages, and a
chamber which in open communication with the cylinder, ports formed through
said shell and connecting the induction and eduction passages with the chamber
aforesaid, and valves controlling said ports, said valves being movable laterally
with relation to the cylinder, substantially as set forth.
2. In a double-acting pump, the combination of a barrel having an inner cylinder,
an outer shell, and partitions dividing the space between them into induction and
eduction passages, two valve chests, one located at each end of the barrel and in
line therewith, each of said chests having an outer shell, an inner shell, and
partitions dividing the space between them into induction and eduction chambers.
or passages communicating with the induction and eduction passages of the barrel,
the inner shell being disposed lengthwise of the barrel and having through it ports
through which the induction and eduction chambers communicate with the cylinder,.
and valves movable laterally with relation to the cylinder and controlling said ports,
substantially as set forth.
3. In a double-acting pump, the combination of a barrel having an inner cylinder,
5 an outer shell, and partitions dividing the space between them into induction and
eduction passages, two valve chests, one located at each end of the barrel and in
line therewith, each of said chests having an outer shell, an inner shell, and
partitions dividing the space between them into induction and eduction chambers
or passages communicating with the induction and eduction passages of the barrel
0 the inner shell being disposed lengthwise of the barrel and having through it ports
through which the induction and eduction chambers communicate with the cylinder
the interior of the inner shell being in open communication with the interior of
the cylinder, and valves movable laterally with relation to the cylinder and
controlling said ports, substantially as set forth.
1896
HARRIS & MILLS,
23 Southampton Buildings, London, W.C., Agents..