Improvements in or applicable to Steam or other Pumps.
Year: 1893

page_text: Date of Application, 20th Nov., 1893
Complete Specification Left, 20th Aug.. 1894-Accepted, 20th Oct., 1894
PROVISIONAL SPECIFICATION.
Improvements in or applicable to Steam or other Pumps.
We, FRANK PEARN, SINCLAIR PEARN and THOMAS ADDYMAN, of the Firm
of Frank Pearn & Co., of Gorton, Manchester, in the County of Lancaster,
Engineers, do hereby declare the nature of the said invention, to be as follows:-
Firstly. Our invention relates to an arrangement forming the cylinder or casing
in which the ram of a pump works and by which the ram is packed.
The cylinder barrel or casing for the ram fits into bored out parts of the casting
of the pump forming the gland for packing the ram. The exterior of the cylinder
or casing is packed by a gland at its upper end and the lower end of the cylinder
or casing compresses the packing for the inner end of the ram when it is forced
inwards, and when forced inwards it slides through the gland at its upper end.
for
The cylinder or casing is uniformly cylindrical on its exterior, but has a groove
formed round it at about one fourth its length from its inner end, this groove
a ring cut in two halves and then placed in the groove on the exterior of the
cylinder or casing when in position on the ram.
This ring in two halves projects from the periphery of the exterior surface of
the cylinder and comes into a recess formed in two flanges or rings round the
cylinder or casing which rings or flanges can be secured together with the ring in
two halves held between them.
By these flanges the cylinder can be moved up and down upon the ram and by
bolts or screws passing through the two flanges the packing round the inner end of
the ram can be compressed in the gland.
In place of the ring cut in two halves, and two flange rings, there may be one
with one or two pins or screws passing laterally through holes in the flange ring
and into the groove upon the exterior of the cylinder, or the flange ring may be
made in two halves and clamped by screws upon the cylinder.
Secondly. Our invention relates to pump valves made by a disc ring that can
slide to and from the surface forming the seating of the valve, and consists in
arrangements by which the india-rubber or equivalent facing is kept in position by
simple means.
There are a series of projecting pins from the facing side of the lifting disc
which pass through holes in the india rubber facing, and as these pins or projections
are longer than the lift of the valve they never become detached or withdrawn
from the holes in the india-rubber ring when working.
This arrangement allows the india-rubber ring to be readily changed or renewed
with little trouble and obviates the necessity for rivetted bolts hitherto used.
Dated this Eighteenth day of November 1893.

page_text: Improvements in or applicable to Steam or other Pumps.
We, FRANK PEARN, SINCLAIR PEARN and THOMAS ADDYMAN of the Firm
of Frank Pearn & Co., of Gorton, Manchester, in the County of Lancaster,
Engineers, 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 :--
.
Firstly. Our invention relates to an arrangement forming the cylinder or casing
in which the ram of a pump works and by which the ram is packed.
The cylinder barrel or casing for the ram fits into bored out parts of the casting
of the pump forming the gland for packing the ram. The exterior of the cylinder
or casing (for vertical rams) is packed by a gland at its upper end and the lower
end of the cylinder or casing compresses the packing for the inner end of the ram,
wlien it is forced, inwards, and when. forced inwards it slides through the gland at
its upper end:
The cylinder or casing is (or may be) uniformly cylindrical on its exterior, but has
a groove formed round it at about one fourth its length from its inner end, this
groove is for a ring cut in two halves and then placed in the groove on the exterior
of the cylinder or casing when in position on the ram.
This ring in two halves projects from the periphery of the exterior surface of
the cylinder and comes into a recess formed in two flanges or rings round the
cylinder or casing which rings or flanges can be secured together with the ring in
two halves held between them.
By these flanges the cylinder can be moved up and down upon the ram and by
bolts or screws passing through the two flanges, the packing round the inner end of
the ram can be compressed in the gland.
In place of the ring cut in two halves, and two flange rings, there may be one
with one or two pins or screws passing laterally through holes in the flange ring
and into the groove upon the exterior of the cylinder, or the flange ring may be
made in two halves and clamped by screws upon the cylinder, or otherwise arranged
as hereinafter described.
Secondly. Our invention relates to pump valves made by a disc ring that can
slide to and from. the surface forming the seating of the valve, and consists in
arrangements of such valves by which the india-rubber or equivalent facing is kept
in position by simple means.
There are a series of projecting pins from the facing side of the lifting disc
which pass through holes in the india rubber facing, and as these pins or projections
are longer than the lift of the valve they never become detached or withdrawn
from the holes in the india-rubber ring when working.
This arrangement allows the india-rubber ring to be readily changed or renewed
with little trouble and obviates the necessity for rivetted bolts hitherto used.
Fig. 1, is a sectional elevation illustrating the first part of our invention as
applied to pumps in which the longitudinal axis of the ram is in a horizontal
position.
Fig. 2, is a similar view to Fig. 1, where the longitudinal axis of the ram is in a
vertical position, and
Fig. 3, is a sectional elevation illustrating a modification.
Fig. 4, is a sectional elevation illustrating the second part of our invention as
applied to valves.
Our invention is applicable to steam and other motive pumps.
In the illustrations Figs. 1, 2 and 3, the steam or other motive cylinder and their
connected parts are omitted, being ordinary and well known.
The castings in which the passages or chambers for liquids are formed are shown

page_text: in Figs. 1 and 2, which passages or chambers contain the ordinary inlet and outlet
valves, and in the castings the ram and its cylinder and connected parts are also
shown. In order that our invention may be clearly understood we will name by
letters of reference the ordinary parts shown in the above named figures.
In Fig. 1, a, is a casting having a suitable base, upon which it rests.
part of the casting forms the chambers a' and a³, for the ram b.
The lower
The chamber a¹, has a passage a³, leading to the inlet and outlet valves (not
shown) and the other chamber a³, has a passage at, leading to the inlet and outlet
valves for that end of the ram. The inlet and outlet valves (which are ordinary
and well known as before stated) are in that part of the casting a, above the
chambers for the ram, and access is given to the inlet valves, by means of the cover
plates a, and to outlet valves by means of the cover plate a°.
a', is the junction flange for the suction or water supply and aº, is the junction
flange for the water delivery pipe.
In Fig. 2, a, is the casting upon a hollow base forming a passage for liquid
having a flange junction a', for the water supply which passes to vertical side
pipes a*, from the hollow base of the casting in which pipes the inlet and outlet
valves are arranged in one pipe for one end and in the other pipe for the other end
of the ram.
The cover plates a³, give access to the inlet and the cover plates a³, to the outlet
valves, the pipes as, being delivery pipes for the liquid, which two pipes a³, may
form a junction with the pipe conveying the liquid away.
a', is the inner or lower ram chamber, and a², the upper ram chamber; a³, is the
passage between the chamber a', and the inlet and outlet valves for one end of the
ram b.
a, is the passage between the chamber a³, to the inlet and outlet valves for the
other end of the ram.
In Fig. 1, the ram b, is worked by a rod b, passing through a gland packing b³,
at the end of the chamber a--this rod b' being connected with the piston rod of
steam or other motive piston actuating the ram b.
The ram in the chamber a², works through a ring 3, fitting the bored out
chamber a², and this ring 63, forms one end of the packing gland for the ram b.
The ram also works in a cylinder c, the end of which fits the annular space
round the ram which forms the receptacle for packing material and the end of the
cylinder c, when forced inwards acts to compress and hold the packing material in
the gland.
The exterior of the other end of the cylinder c, fits the bored out part for it in
the chamber a', and round its exterior there is a gland formed which is packed by
the gland ring, held in position by set screws.
There is a cover plate a³, on the end of the chamber a', and from this end the
ram b, is first inserted and then the cylinder c, is inserted from the same end.
Round the exterior of the cylinder c, a groove is formed and a ring c', in two
equal semi-circular halves fits this groove and projects beyond the exterior of the
cylinder, and on the cylinder upon each side of the ring e', in halves, there is a
flange ring 2, which when secured together by screw bolts hold the ring c', in halves
between them, so that by moving these flanges c³, the cylinder c, can be forced
endways, and is moved end ways to tighten the packing in the gland by screws (not
shown) passing through the holes in the flanges c³, and screwing into screw tapped
holes in the casting a.
It will be understood that the cylinder c, is passed through the gland ring, and
the two flange rings 2, and that the latter are secured together with the ring in
halves c', between them after the cylinder c, has been placed in its working
position.
The same arrangement as that shown and described in reference to Fig. 1, is
used in the modification shown by Fig. 2, except that the gland 62, for the rod b',
of the ram b, is formed in a plate a, forming the cover plate at that end where the
ram b, and cylinder c, are inserted and that in Fig. 2, there are not two flange

page_text: rings c³, but one solid ring c³, and the ring in halves c', is dispensed with and pins
are used instead the longitudinal axes of which pass tangentially to the cylinder c,
through holes in the solid ring c³, so that one side of each of the pins come into
the groove formed round the exterior surface of the cylinder c.
In Fig. 3, the outer end of the cylinder c, is slightly larger in diameter than the
inner end to allow depth for a short length of screw thread so that when the
cylinder c,
is inserted the flange c³, which is screw tapped may be screwed
thereon.
Either of the modes shown in Figs. 1, 2 and 3 or any other suitable mode may be
used for connecting the flange c³, or its equivalent with the cylinder c.
It will be understood that there is an open space in the casting a, between the
two inner ends of the chambers a' and a³, and round the cylinder c, except on two
sides giving free access for packing the glands upon the cylinder c.
Fig. 4, illustrates the improvements forming the subject of the second part of
our invention, applied to a set of inlet and outlet valves."
Both valves are similar in construction and are arranged one over the other.
Part of the chambers in the casting for the valves is shown.
d', is the division between the suction or supply passage or cavity d, (partly
shown); d, the chamber or passage which is in communication with one end of a
ram pump.
d, is the chamber into which the liquid forced by the pump enters to pass to
the delivery pipe.
d', is part of the cover or lid giving access to the valves.
The division d', in the casting is bored out to receive the seating of the inlet
valve, which seating consists of a cylindrical ring e, having a dise facing e¹, with
perforations or grid openings through which the liquid can pass.
From the centre of the seating el, a hollow stem e' rises, and this is turned on its
exterior to fit a bored out casting formed by a boss f, with arms, carrying a ring
disc f, having projecting pins f, from its under side, upon the face of which a flat
ring of india rubber or other suitable elastic material f, is placed, the india rubber
ring having a hole through it for each pin f³, on the valve ring f.
These pins f³, do not extend through the full thickness of the india rubber
ring, but they are longer than the lift allowed to the valve which slides vertically
upon the central hollow stem e³, from the seating.
The partition d*, between the chambers d and d, for the outlet valve is bored
out for a bush ring seating g, and the exterior of the ring seating e, for the outlet
valve fits the interior of the bush ring seating 9, as a valve.
The hollow stem e², in the centre of the seating e, extends both above and below
the ring seating e, so that when in position, a disc upon the lower end of the hollow
stem e, rests upon the upper end of the hollow stem e, of the inlet valve and forms
a stop to limit the lift of the inlet valve.
The upper outlet valve is in other respects than those described the same as the
inlet valve.
There is a projection d³, from the lid or cover d, which when the lid is in
position comes against the upper end of the hollow central stem e³, from the seating
of the outlet valve and holds it down and also limits the lift of that valve.
The projection d³, from the underside of the lid d', may be made hollow and
filled with suitable elastic material so as to be sure to press, when the lid is secured,
upon the upper end of the hollow stem e, and thus allow for irregularities in
the thickness of the packing, when used, between the cover plate d', and its facing
on the chamber d³.
As illustrated in Fig. 4, the projection d³, from the underside of the lid d', is
tubular and has a thimble shaped part d', fitted to slide in its bore the lower end of
this thimble part being closed and resting upon the end of the hollow stem e³, of
the seating of the outlet valve.
There is a sufficiently strong helical spring d', in the thimble slide to force it
outwards, but to prevent it from being forced out too far when the lid d*, is

page_text: removed, there is a slot in the side of the thimble part into which the end of a pin
or screw de, passes from the exterior of the tubular projection do, and thus while
allowing sufficient movement in and out prevents the thimble part d', from being
pushed out by the spring too far, when the lid d, is removed or liberated.
As the valves are arranged, when the lid d*, is removed, the outlet valve and
its seating can be withdrawn, and the interior diameter of the ring 9, is large
enough to allow the inlet valve to be also removed, and when the ring 9, is
withdrawn, the seating e, for the inlet valve may also be removed; thus ready
access is given to the valves.
The first part of our invention is also applicable to single acting ram pumps
where the inlet valve is in the chamber a', or equivalent chamber, and the ram
is hollow, and the liquid passes through it, and also through the outlet valve
formed at or in the end of the hollow single acting ram.
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. The combination of a cylinder with a double acting ram, and its two
chambers, which cylinder forms the means of packing the ram at one end, for
one chamber, and which cylinder is packed by a gland at the other end for the
other chamber substantially as and for the purpose hereinbefore described and
illustrated by the drawings.
2. The combination and arrangement of a double acting ram, its two chambers (a¹
and a,) and a cylinder (c) and connected parts substantially as hereinbefore
described and illustrated by Figs. 1 and 2 of the drawings, or when modified by
connecting the cylinder (c) and flange or equivalent part (c) substantially as
hereinbefore described and illustrated by Fig. 3, of the drawings.
3. The combination of a cylinder with a single acting hollow ram pump through
which ram the liquid passes and with its two chambers, which cylinder forms the
means of packing the ram at one end for one chamber, and which cylinder is
packed by a gland at the other end for the other chamber substantially as
hereinbefore described.
4. The combination and arrangement of inlet and outlet valves substantially as
herein before described and illustrated by Fig. 4 of the drawings.
Dated this Eighteenth day of August 1894.
PETER J. LIVSEY,
Agent.