Improvements in or connected with Pumping Apparatus.
Year: 1894

page_text: Date of Application, 2nd Jan., 1894
Complete Specification Left, 2nd Oct., 1894-Accepted, 29th Dec., 1894
PROVISIONAL SPECIFICATION.
Improvements in or connected with Pumping Apparatus.
I, ROBERT HARRY GREY of 3 Mill Hill Grove, Acton in the County of
Middlesex Manufacturer do hereby declare the nature of this invention (which has
been communicated to me from abroad by Frederick William Grey, Oorgaum
Southern India Mining Engineer) to be as follows:-
The object of this invention is to provide means whereby pieces of mineral or
other refuse or foreign matter are prevented from gaining access to the buckets
or plungers or other working parts of pumping apparatus so as to injure them or
interfere with their working the said means being also such as will not objectionably
interfere with the passage for water or liquid through the apparatus. According
to this invention there is provided a straining device in the suction pipe or passage
that is between the inlet to the pumping apparatus and the bucket or plunger the
said straining device consisting of perforated reticulated, or like material which
will not allow the passage of solid matter. This device preferably is arranged
in the following way: A piece for containing the strainer or strainers is secured
in the passage above the inlet or suction end the said piece being of such a
greater cross sectional area than the inlet or suction passage that the available
passage through the strainer or strainers is equal or thereabouts to the area of
the said passage.
In the chamber formed by this piece is an opening closable
tightly by a door. The interior of the said chamber has projections or grooves
preferably a pair on opposite sides of the chamber next the inlet or suction end and
a pair on opposite sides nearer to the piston or plunger. These projections or
grooves form guides and supports for strainers the one next the inlet or suction end
being preferably coarser in its reticulations or perforations than the other which
other, as its reticulations or perforations will be smaller; may, be placed at an
The strainers are
angle to give a greater area of passage-way through it.
preferably made each of plates shaped to fit the chamber and capable of being
slidden in so as to be supported in, or by, the grooves or projections. The said
plates have large openings through them so that they coustitute frames for the
wirework or the like which can be pinched between the frames so that the latter
act as supports. By removing the aforesaid door the strainers can be slidden in
or removed and replaced as desired. There may be one or any number of strainers
as desired.
The apparatus described is more especially designed for bucket lift pumping
apparatus but it is not limited thereto.
Dated the 2nd day of January 1894.
JOHNSONS & WILLCOX,
47, Lincoln's Inn Fields, W.C., Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in or connected with Pumping Apparatus.
I ROBERT HARRY GREY of 3 Mill Hill Grove, Acton in the County of
Middlesex Manufacturer do hereby declare the nature of this invention (which has
been communicated to me from abroad by Frederick William Grey, Oorgaum,
Southern India, Mining Engineer) and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:
The object of this invention is to provide means whereby pieces of mineral or
other refuse or foreign matter are prevented from gaining access to the buckets
or plungers or other working parts of pumping apparatus so as to injure them or
interfere with their working the said means being also such as will not objectionably
interfere with the passage for water or liquid through the apparatus. According
to this invention there is provided a straining device in the suction pipe or rising
main or passage; that is between the inlet to the pumping apparatus and the pump
or bucket or plunger the said straining device consisting of perforated reticulated
or like material which will intercept solid matter. This device preferably is
arranged in the following way and as shewn in vertical section in Figure 1 of the
accompanying drawing.
A piece or casting A for containing the strainer or screen or strainers or screens is
secured in the passage above the inlet or suction end (which is secured to the flange a)
the said piece A being of such a greater cross sectional area than the inlet or suction
passage that the available passage through the strainer or strainers is equal or there-
abouts to, but preferably greater than, the area of the said passage. In the chamber
formed by this piece A is an opening closable tightly by a door B. The interior of
the said chamber has projections or grooves preferably a pair e on opposite sides of
the chamber next the inlet or suction end and a pair c² on opposite sides nearer
to the pump or piston or plunger of the pumping apparatus the pipe leading to
which is connected to the flange a². These projections or grooves cc form guides
and supports for strainers D D shewn separately in Figures 2 and 3 the one D
next the inlet or suction end being preferably coarser in its reticulations or
perforations than the other D2 which latter, as its reticulations or perforations
will be smaller; may be placed at an angle as shewn in Figure 1 to give a greater
area of passage-way through it. The strainers are preferably made each of plates
shaped to fit the chamber and capable of being slidden in so as to be supported in, or
by, the grooves or projections. The said plates have large openings through them
so that they constitute frames for the wirework or the like which can be pinched
between the frames so that the latter act as supports. By removing the aforesaid
door B the strainers can be slidden in or removed and replaced as desired.
There may be one or any number of strainers as desired and it or they may be
placed in any convenient position in the passage between the suction end and the
pump.
The apparatus described is more especially designed for bucket lift pumping
apparatus for mines but it is not limited thereto.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is.-
1. In combination with pumping apparatus a strainer or screen or strainers or
screens situated in the passage between the suction end and the pump or bucket
substantially as hereinbefore described.
2. In or for pumping apparatus a chamber for insertion between the suction end
and pump or bucket and containing a strainer or screen or strainers or screens and

page_text: having a closable opening by which the said strainer or screen or strainers or
screens can be placed in position or removed substantially as hereinbefore described.
3. In combination with pumping apparatus strainers or screens situated in the
passage between the suction end and the pump or bucket the lower strainer or
screen being coarser than the upper strainer or screen and the latter being set at
any angle substantially as and for the purpose hereinbefore described.
4. In or for pumping apparatus a chamber constituting an enlargement of the
passage or rising main to the pump or bucket, and strainers or screens one above
another the upper being finer than the lower and relatively arranged so that the
available water way is not objectionably lessened substantially as hereinbefore
described.
5. In or for pumping apparatus a piece or casting A constituting a chamber
having a closable opening and grooves or projections into or between which are
slidden strainers or screens the size of the chamber relatively to the passage or
rising main to the pump or bucket and the placement of the strainers or screens
being such that the said strainers or screens do not objectionably lessen the available
water way substantially as hereinbefore described.
Dated this 2nd day of October 1894.
JOHNSONS & WILLCOX,
47, Lincoln's Inn Fields, W.C., Agents.