Year: 1897

page_text: Date of Application, 22nd Apr., 1897-Accepted, 29th May, 1897
I, WILLIAM GEORGE HEYS, of 70 Market Street, Manchester, in the County
of Lancaster, Chartered Patent Agent, do hereby declare the nature of this ioven-
tion, and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
This invention relates to improvements in the construction and arrangement of
pumps of the double-acting ram type, having as their object simplification io
construction and increased efficiency in operation.
I will describe my present improvements with reference to the accompanying
drawings which represent vertical longitudinal and transverse sections respectively.
My improved pump comprises the two co-axial chambers A, B, of which the
lower one B, alone is provided with a stuffing box C. This stuffing box being
external is casy of access for all purposes. The lower part of the upper chamber
is bored out and is fitted with a metallic open ended cylinder D, the hole and the
cylinder being, by preference, made slightly taper, and the latter being forced in
by hydraulic pressure so as to ensure a perfect fit and absolute tightness. The
lower end of the cylinder D extends well into the stuffing box as shown by the
drawings, that is to say so far as to nearly touch the packing ring E. The external
diameter of the cylinder D and the internal diameter of the stuffing box C are so
proportioned as to leave room for the packing which is compressed and retained in
the usual manner by the gland F. The packing being pressed tightly against the
ram R as well as the cylinder D, there can be no possible communication through
the stuffing box between the chambers A and B.
I may control the passage of the fluid into and out of the chambers by means of
ordinary valves and valve motions, but I prefer to employ the constructions and.
arrangements illustrated by the drawings. In this case, I construct and arrange
four valves vertically around a common imaginary axis. These valves, V1, V2,
V, V 4, are all alike, and may be of any suitable known construction such as that
I is the
shown, V and V³ being the suction and V2 and V 4 the delivery valves.
suction inlet, close to which there may be formed in the casing the small air
chamber G, Figure 1. The inlet communicates with the under side of valve V'
directly, and with the underside of the valve V3 through the passage 11, Figure 2.
J with
The upper side of the suction valve V₁ communicates through the
passage
the pump chamber B, and the upper side of the suction valve V communicates
with the pump chamber A through the passage J', Figure 1. The passages J, J'
respectively communicate with the undersides of the valves V and V4. The
upper side of the delivery valve V' communicates with the outlet O by the
passage K, with which the delivery valve V4 also communicates directly,
Figure 1.
With this arrangement, the seatings of all the valves may be bored at the same
time by cutters on a single boring bar which is inserted through holes in the top
and bottom which are afterwards closed by the screw plugs P and P. The cutters
can be inserted into and adjusted in the boring bar through hand holes H, H,

page_text: afterwards suitably closed by covers, Figure 2. These hand holes also serve
afterwards for the insertion, repair, and renewal of the valves. There must
obviously be a means of separation between the valves V and V³. This is
conveniently provided by casting into the casing a diaphragm the hole through
which is, after the valve seatings have been bored, closed by two blank flanges
and a bolt, or otherwise. The air chamber M, on the delivery side, is formed in
the upper part of the valve casing.
The whole of the pump and the valve casing may be cast together, including
the chambers A and B, the several ports and passages, and the valve casing with
its air chamber.
The cylinder D, being in rigid connection with the upper chamber A of the
pump, the gland F may be lifted to re-pack the stuffing box without interfering
with the motion of the pump whilst at work. This is a great advantage now
secured for the first time in pumps of the type described herein.
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 :-
:-
1. In double-acting ram pumps, the combination, construction and arrangement
of the chambers A, B, the cylinder D, and the gland, stuffing box, and packing
ring, F, C, E, substantially as hereinbefore described and as illustrated by the
accompanying drawings.
2. In double-acting ram pumps, a cylinder D pressed into the chamber A and
projecting into the stuffing box of the chamber 13, constructed substantially as
hereinbefore described and as illustrated by the accompanying drawings.
3. In double-acting pumps, the vertical arrangement of the valves for the
purpose set forth, and the combination therewith of two air chambers G and M,
and of the passages I, J, J, and K, and the hand holes H, H, substantially as
hereinbefore described and as illustrated by the accompanying drawings.
4. In double-acting pumps, the vertically arranged valves V1, V2, V3, V 4, a
closed diaphragm separating the valves V2 and V3, the passages I, J, J and K,
and the hand holes H, H, constructed and arranged substantially as hereinbefore
described and as illustrated by the accompanying drawings.
Dated this 21st day of April 1897.
W. E. HEYS & SON,
Agents for the Applicant.