Improvements in Sinking Pumps for Mines and other Services.
Year: 1898

page_text: Date of Application, 12th Aug.; 1898
Complete Specification Left, 5th May, 1899-Accepted, 10th June, 1899
PROVISIONAL SPECIFICATION.
Improvements in Sinking Pumps for Mines and other Services.
EDMUND HOWL, of The Quarries, near Dudley, in the County of Stafford,
Engineer, and WALTER WATKINS ATTWOOD, of Fern Bank, Blakebrook, Kidder-
minster, in the County of Worcester, Engineer, do hereby declare the nature of
this invention to be as follows:-
This invention consists of improvements in vertical sinking pumps for mines
and other services, our object being to construct and arrange such pumps in a
compact and convenient manner and to provide for rigidly sustaining them at
any required vertical position for working within the range of adjustment.
In the application of our invention to the construction of a compound direct
acting sinking pump, or pumping engine, we employ a steam or motor cylinder
which is divided into two equal parts by a central annular projection and has a
double headed trunk piston forming a high pressure area between the trunk and
the cylinder on each side of the annular division ring, and low pressure areas on
the outer ends of the trunk piston. The steam moved valve of the engine is of a
hollow cylindrical type fitted in a circular steam chest. The required movement
of the valve to effect the opening and closing of the cylinder ports in the valve
face is attained by steam taken alternately from each of the high pressure areas on
either side of the central division plate or projection of the cylinder, suitable
passages being arranged to convey the steam from such areas to the admission
ports at either end of the chest.
The pump end of the engine is arranged in a direct line with the motor or steam
cylinder and is provided with a combined bucket and plunger arranged for suction
on the upstroke only but to deliver both on the up and the down strokes. The
pump body casting is provided with an annular space or waterway near its lower
end and is fitted with a loose metal liner which is perforated with several rows
of holes or passages formed or cut in its circumference near the lower end giving
communication to the annular space or waterway in the pump body and forming
the suction and delivery passage. By the use of such a perforated liner we are
enabled to readily provide ample area for the flow of water and to allow the
bucket to descend over the top row of holes or the upper portion of the passages in
the liner to ensure the discharge of accumulated air from under the bucket. By
the use of a lengthened liner as described any accumulated air is effectually dis-
charged upon the completion of each down stroke without damage to the bucket
cups or packings as this is effected during the time that the bucket is completely
within the working barrel. We are also able to more easily withdraw and replace
the bucket than is possible in the ordinary barrels not having our improved
lengthened liners. The bottom end of the liner we round off or chamfer to admit
of easy introduction of the bucket.
The pump is sustained in the pit or well on steel or iron bars preferably of
H section, the lower ends of such bars being made to rest upon bearers or
within stays, fitted across the pit or well, whilst the upper ends of the bars are
secured at the surface by suitable cotters. The sustaining bars are made in

page_text: convenient lengths for sinking purposes and the pipes are made in similar or in
corresponding lengths to permit of the convenient and ready coupling or connection
of the additional parts as the pump is lowered, and the detachment of the same
when the pump is raised. We employ suitable clamping bars for obtaining
sufficient rigidity between the pipes and the sustaining bars. The complete pump
or pumping engine with the steam and water pipes and the sustaining bars herein-
before described are raised and lowered as required by means of a central screw
working within a nut at the surface of the pit or well, such nut having double
ratchet teeth around its periphery for operation in either direction by a lever
with a pair of pawls. The screw is connected by short lengths of chain with a
lifting bar or lifting bars engaging with a pair of the cotters of the sustaining
bars, suitable distance pieces being disposed between the lifting bars and the
cotters.
We adapt our invention to the construction of simple or non-compound and
to other types of sinking pumps for mines, and for pumps for other services.
Dated this 11th day of Amans 1808
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents for the Applicants.
Improvements in Sinking Pumps for Mines and other Services.
We, EDMUND HOWL, of The Quarries, near Dudley, in the County of Stafford,
Engineer, and WALTER WATKINS ATTWOOD, of Fern Bank, Blakebrook, Kidder-
minster, in the County of Worcester, 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 consists of improvements in vertical sinking pumps for mines
and other services, our object being to construct and arrange such pumps in a
compact and convenient manner for efficient and regular working.
In the application of our invention to the construction of a compound direct
acting sinking pump, or pumping engine, we preferably employ a steam or motor
cylinder of that type which is divided into two equal parts by a central annular
projection and has a double headed trunk piston forming a high pressure area
between the trunk and the cylinder on each side of the annular division ring, and
low pressure areas on the outer ends of the trunk piston. The steam moved
valve of the engine is of the hollow cylindrical type fitted in a circular steam
chest, and the other parts of the steam end of the engine are constructed and
arranged in the ordinary manner.
The pump end of the engine is arranged in a direct line with the motor or steam
cylinder and is preferably provided with a combined bucket and plunger
arranged for suction on the upstroke only but to deliver both on the up and the
down strokes. The pump body casting is provided with an annular space or water-
way near its lower end, and is fitted with a metal liner having rounded or
chamfered ends and which is perforated with several rows of holes or passages
formed or cut in its circumference near the lower end giving communication to
the annular space or waterway in the pump body and forming the suction and
delivery passage. By the use of such a lengthened and perforated liner we are
enabled to readily provide ample area for the flow of water and to allow the
bucket to descend over the top row of holes, or the upper portion of the passages
in the liner, to ensure the discharge of accumulated air from under the bucket,

page_text: upon the completion of each down stroke, without damage to the bucket cups, or
packings, as such discharge is effected during the time that the bucket is com-
pletely within the working barrel. We are also able to more easily withdraw and
replace the bucket than is possible in the ordinary barrels not having our
improved lengthened liners.
The accompanying illustration is a sectional elevation through a portion of the
water end of a sinking pump constructed in accordance with our invention.
The body A of the casting is provided with an annular space or water way B
near its lower end, and the portion of the liner C passing through such space or
water-way is perforated as shown; such perforations form the communicating
passages between the interior of the liner, or the pump barrel, and the water
way B which joins the space between the suction and delivery valves D and E.
On its down stroke the lower face or end of the bucket F passes below the top
row of holes or perforations through the liner C and we can thus ensure the
effectual discharge on each down stroke of any air that may have accumulated
beneath the bucket.
We adapt our invention to the construction of simple or non-compound and to
other types of sinking pumps for mines, and for pumps for other services.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is: :-
1. In pumps for mines and for other services the provision of means for
effecting the discharge of air from beneath the bucket or like part, substantially
as described.
2. The combination with the pump body A having an annular space or water-
way B which joins the space between the suction and delivery valves D and E,
of a perforated liner C, substantially as and for the purposes described and as
illustrated.
1000
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, and 25, Cross Street, Manchester,
Agents for Applicants.