Improvements in or applicable to Deep Well Pumps.
Year: 1893

page_text: Date of Application, 28th Nov., 1893—Accepted, 30th Dec., 1893
COMPLETE SPECIFICATION.
Improvements in or applicable to Deep Well Pumps.
I EDWARD LEIGH MATTHEWS of Nutsford Vale House Longsight near
Manchester in the County of Lancaster Engineer, 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:-
This invention relates to the construction of pumps to be used in deep wells, or
borings such as artesian wells, and other wells where the working barrel is placed
at or near the bottom of the well or tube, the objects of the invention being to
increase the efficiency of the pump by obtaining a continuous flow instead of an
intermittent one, and to reduce the strain upon the working parts of the pump.
The invention consists of certain improvements upon the deep well pump for
which Letters Patent No. 12037 were granted to John Kilner and Thomas William
Matthews bearing date August 1st, 1890. The nature of the present invention
and the manner in which the same is to be performed or carried into practical
effect will be readily understood on reference to the accompanying drawings and the
following explanation thereof.
Fig. 1 on the drawings represents a vertical section of the shallow well at the
top and working barrel and lower portion of the tube of a deep well pump showing
the application of my invention thereto.
Fig. 2 is a section on a larger scale of my improved clack valve.
a is the well and 6 part of the tube leading down to the working barrel c of the
pump. d is the discharge pipe.
In the first place I fix the clack valve e at the top of the working barrel c as in
the previous case, but instead of limiting its action by a guard or check ring
supported by a bridge-piece I prolong the boss f1 (which forms a part of the valve
seating) upwards above the valve e as shown at Fig. 2 and I fix at its upper end a
check ring or collar 9,
Secondly instead of employing a single bucket in the working barrel c I have
two buckets and i both working in the same barrel and alternately approaching
to and receding from each other, so that, as one of them is always lifting, I obtain
a continuous flow of water, the delivery is consequently doubled or nearly so, and
the strain upon the working parts is greatly reduced.
The upper bucket is attached to the lower end of a tubular rod k and the lower
bucket is attached to the lower end of a solid rod working freely inside the
tube k.
The tubular rod k and the solid rod I may be respectively actuated by two steam
pistons working in two cylinders m and n placed in a line one above the other
at the top of the well a, the upper one having a solid piston rod and the lower one
a tubular piston rod, and each piston rod working within it, both being so connected
by tappets or otherwise to the steam valve of the opposite cylinder that the two
pistons always work synchronously with each other but in opposite directions; or the
same motion may be otherwise imparted to the two buckets.
It will be evident that by this arrangement of two buckets working synchronously
in opposite directions in the same barrel, one is always lifting while the other is
making the return stroke, and consequently the column of water is never checked
but rises in a continuous stream.
To prevent the passage of steam into the pump tube, or of water into the lower
cylinder, the hollow piston rod k¹ of the latter is not connected directly with the
tubular pump-bucket rod k but at the bottom of the former and the top of the latter
are fixed collars o which are connected together by thrust rods 'p, stuffing boxes q
being provided through which the solid rod works freely.

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 :-
First. In a deep well pump the combination of two buckets moving synchronously
in opposite directions in the same working barrel, with a clack valve situated at or
near the top of the latter and above the two buckets, substantially as hereinbefore
described and illustrated by the drawings annexed, and
Secondly I claim as an improvement in the clack valves of deep well pumps,
fixing the guard or check ring (which limits the rise of the valve) to a prolongation
upwards of the central boss forming part of the valve seating substantially as
herein before described and illustrated.
Dated this 27th day of November 1893.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.