Improvements in or relating to Pumps.
Year: 1891

page_text: Date of Application, 24th June, 1891
Complete Specification Left, 23rd Apr., 1892-Accepted, 28th May, 1892
PROVISIONAL SPECIFICATION.
Improvements in or relating to Pumps.
We, HENRY BOWMAN of 65 Nottingham Road, Mansfield, in the County of
Nottingham, Contractor's Foreman, and JOHN HENRY VICKERS of 19 Wellington
Square, in the Borough of Nottingham, Contractor, do hereby declare the nature
of our invention to be as follows :-
This invention relates more especially to suction or lift pumps for raising water
and other liquids.
The piston or bucket is formed of a hollow cylindrical casing fitting in the pump
barrel provided at each end with grids cr perforated covers to permit of the
passage of the liquid, the upper one being provided with an india-rubber disc valve
of ordinary construction.
The two ends of the cylindrical casing are reduced to receive packing rings of
india-rubber or other suitable inaterial combined if desirable with metallic packing
rings the whole being held in place by the end grids or covers which thus act as
junction rings.
The end grids or covers may be secured by the bucket rod passing through both
of them provided with nuts for adjustment and if necessary by additional bolts
passing through the grids and the interior of the cylindrical casing. The india-
rubber packing rings may be expanded so as to fit the pump barrel by compressing
them in the direction of their axis by reducing the distance between the end grids
or covers by means of the nuts on the bucket rod or bolts or both, and to prevent
displacement the metallic surfaces in contact with the india-rubber may be
roughened or serrated so as to grip them firmly, also to do away with the
unnecessary friction the diameter of the central portion of cylindrical casing may
be reduced.
Where two or more pump barrels are connected to the same suction pipe we
place below the suction valve of each barrel a sluice valve so that when one is out
of operation the corresponding sluice valve may be closed and the remainder may
continue in operation while the other is repaired.
The upper ends of the pump rods are each preferably connected to one end of a
beam pivotted centrally and connected to crank pins secured to discs carried by an
auxiliary shaft, or shafts which are connected to the crank shaft of the engine by
suitable gearing.
By this means we are enabled to more conveniently obtain a longer stroke for
the pump bucket which stroke is readily adjustable by changing the position of the
crank pins secured to the discs relatively to their centres.
Dated this 23rd day of June 1891.
W. P. THOMPSON & BOULT,
Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in or relating to Pumps.
We, HENRY BOWMAN of 65 Nottingham Road, Mansfield, in the County of
Nottingham, Contractor's Foreman, and JOHN HENRY VICKERS, of 19 Wellington
Square, in the Borough of Nottingham Contractor, 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 more especially to suction or lift pumps for raising water

page_text: f
and other liquids and will be best understood by reference to the accompanying
drawings in which
Fig. 1 is a vertical section of the piston or bucket and part of the pump
barreli
"
Fig. 2 is a vertical section of the same showing modification.
Fig. 3 is a front elevation, Fig. 4 a side elevation and Fig. 5 a plan showing
arrangement of pump barrels, suction pipe, and delivery main.
Like letters indicate like parts throughout the drawings.
The piston or bucket see Fig. 1 is formed of a hollow cylindrical casing a fitting
in the pump barrel b, and is provided at each end with a grid or perforated cover a
to permit of the passage of the liquid, the upper one being provided with an india-
rubber disc valve e of ordinary construction.
The two ends of the cylindrical casing a are reduced to receive packing rings d
of indiarubber or other suitable material combined if desired with metallic packing
rings e the whole being held in position by the end grids or covers a' which thus
act as junction rings.
The end grids or covers a¹ may be secured by the pump-rod f passing through
both of them and provided with nuts for adjustment and if necessary by
additional bolts g passing through the grids and the interior of the cylindrical
casing.
The packing rings d of indiarubber or other suitable material may be expanded
so as to fit the pump barrel by compressing them in the direction of their axis by
reducing the distance between the end grids or covers a¹ by means of the nuts f¹
on the bucket rod or by the bolts g, and to prevent displacement the metallic
surfaces in contact with the packing rings d may be roughened or serrated so as to
grip them firmly, also to prevent unnecessary friction the outer diameter of the
central portion of the cylindrical casing a may be reduced as shown.
In the modification shown in Fig. 2 à inetal disc valve his employed which slides
on the pump rod f, a seat being formed for it on the upper grid or cover a', and its
movement limited by the collar f³.
Where two or more pump barrels b (see Figs. 3, 4 and 5) are connected to the
: same suction pipe i, we place below the suction valve 1 of each barrel a sluice-
valvej so that when any of the pumps require repair the corresponding sluice-valve
or valves may be closed and the repairs effected without affecting the operation of
the other pump or pumps.
The pump barrels may each work in connection with an independent delivery
main, or the whole of them may work in connection with a single delivery main k
as shown, in the latter case a sluice valve is placed preferably in each of the
branches connecting the pump barrels to the delivery main so that the connection
may be closed when a pump is undergoing repair.
Sustaining valves may also be placed in each of the branches preferably below
the sluice valve so that each may be accessible for repairs without affecting the
operation of the remaining pumps.
The upper ends of the pump rods are each preferably connected to the ends of
independent beams pivotted centrally and connected to crank pins secured to discs
carried by an auxiliary shaft or shafts connected to the crank shaft of an engine by
suitable gearing.
By this means we are enabled to more conveniently obtain a long stroke for the
pump bucket, which stroke is readily adjustable by changing the position of the
crank pin secured to each disc relatively to the centre of each disc and also put
one pump barrel out of operation without interfering with the remainder.
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 bucket or piston the combination with a cylindrical casing such
as a formed with reduced ends to receive packing rings d'e of junction rings or

page_text: covers such as a' adapted to retain and compress the said packing rings substantially
as described and illustrated in the accompanying drawings.
2. The combination with two or more pump barrels working in connection with
the same suction pipe of valves j so that any of the pump barrels may be put out
of operation without interfering with the working of the other or others substantially
as described and illustrated in the accompanying drawings.
3. The combination with two or more pump barrels working in connection with
the same suction pipe and delivery main of valves j and I so that any of the pump
barrels may be put out of operation without interfering with the working of the
other or others substantially as described and illustrated in the accompanying
drawings.
Dated this 22nd der of A nril 1892
W. P. THOMPSON & BOULT,
Agents for the Applicants.