Improvements in Construction of Duplex Ram and Bucket Pumping Engines.
Year: 1893

page_text: Date of Application, 27th July, 1893
Complete Specification Left, 27th Apr., 1894-Accepted, 21st July, 1894
PROVISIONAL SPECIFICATION.
Improvements in Construction of Duplex Ram and Bucket Pumping
Engines.
.
SAMUEL WALKER Engineer and Ironfounder Eagle Iron Works Radcliffe
near Manchester. I do hereby declare the nature of this invention to be as
follows:-.
That it consists of special trunks or connections for attaching pump barrells to
cach other and to steam cylinders in such a manner as to tie the various parts
together, so to speak in one piece, without in any way using them as covers to
form steam or water tight joints and are constructed so as to enable the removal of
steam cylinders, pumps, or ram barrells, covers, glands, pistons, buckets, and rods,
without disturbing or interfering with combined engines and pumps. The trunks
which connect the several parts together are cylindrical in form or otherwise,
having at each end internal flanges and turned projections at their outer diams. which
fit into bored recesses of steam cylinders and pump barrells, thus ensuring accuracy
and rigidity, when the working parts of engine are taken away, the said trunks
being permanently bolted to their respective places by means of independent bolts,
and are so arranged that all covers and glands are enclosed within the said internal
flanges, the glands and covers being thus removable and easy of access: also
improved construction of pump barrells and clack boxes, the pump barrells and
clack boxes are cast with dome shaped tops, the said tops having two openings one
at each end which are fitted with small covers and afford easy access to cach set of
delivery clacks, dispensing with large loose covers and great surface joints on top
side of delivery clacks.
The crossheads are adjustable by means of wedge bolts, two above and two below,
this being arrived at by the increased size of trunks necessitated by having to
remove the working parts of the engines at this point.
his 50th dov of Il, 1803
SAML. WALKER.
COMPLETE SPECIFICATION.
Improvements in Construction of Duplex Ram and Bucket Pumping
Engines.
I, SAMUEL WALKER, of Eagle Iron Works, Radcliffe, 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 the outer framing or structure of
duplex pumping engines provided with either rams or buckets and is designed to
provide for the greater facility of removal for repair or examination of the working
parts such as the buckets pistons and rods without disturbing or interfering with
the fixed parts and to render the stationary parts more rigid and less liable to alter
their position in relation to each other.
It consists essentially in (a) connecting the pump barrels to each other and to the
steam cylinder by means of trunks or connecting pieces not used as covers and
independent of the cylinder cover, (4) constructing the pump barrels and clack
boxes with dome shaped tops provided with two openings one at each end to give

page_text: access to the delivery valves, and (c) in forming the crosshead adjustable with
wedges placed above and below.
It will be fully described with reference to the accompanying drawings :—
Fig. 1. Longitudinal section of duplex bucket pump.
Fig. 2. Plan of same.
Fig. 3. Plan of duplex ram pump.
The steam cylinder A. is connected to the pump barrel B by a special trunk or
connecting piece C. The trunk C is preferably cylindrical in form and the flanges c
are provided with turned projections c which fit into recesses a bored in the
flanges a of the steam cylinder and in the end of the pump barrel. The flanges c
arc of such a diameter as to extend beyond and not interfere with the glands J
and K of pump barrel and steam cylinder respectively and also to allow of them
being secured by bolts & independent of any bolts employed for securing the covers.
The flanges c in the case of bucket pumps are external but for ram pumps may be
internal the bolts being placed through from the inside. The bolts are placed
at such a distance apart as to ensure perfect stability and rigidity of the parts
connected.
This part of the invention is applicable to ram pumps the cylinders being
connected to the steam cylinders by similar trunks C.
The main trunk D which is attached to the front end of the steam cylinder A
and supports the crosshead E of the piston rod F is constructed with an internal
flange d
This flange is provided with a turned projection d' extending
preferably all round it and the flanges a of the cylinder A is provided with a recess
or groove a turned in it into which the projection accurately fits. The two
flanges are secured together by means of independent bolts which do not require
to be unscrewed to allow of the removal of the cylinder cover and gland L the
front cover of the cylinder being contained within the flanges d and secured by
bolts l.
The trunks C and D are permanently bolted to their respective places by the
independent bolts and so form a compact structure from end to end precluding
the possibility of deflection in the relative position of the parts when the working
parts are removed as all covers and glands are enclosed within the flanges and are
removable and easy of access without disturbing the trunks by which the other
parts are connected together.
In the bucket pump the pump barrel B is cast with a dome shaped top N in one
piece with it provided with two openings n n' one at each end which are fitted with
small covers and afford casy access to each set of the delivery clack valves O O' thus
dispensing with large loose covers and great surface joints on the top sides of the
delivery valves. The lower valves P PT are provided with openings for access in
the usual way.
The crosshead E is constructed with the upper and lower parts e e¹ which are
truly turned to fit the interior of the trunk D which is accurately bored. The
parts are connected together by four wedge bolts k two above and two below by
means of which an effective and accurate adjustment of the parts is obtained.
In order to remove the pump bucket G the piston H and rod F the crosshead E
is disconnected from the connecting rod and the front cover L of the steam
cylinder A taken off, the back cover M of the pump barrel B is next taken off and
the pump bucket G removed from the rod F, then loosen the glands J and K and
draw the piston H and rod F out at the front end of the cylinder.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what
I claim is :-
1. In a duplex pumping engine the combination with the pump buckets or pump
cylinders and the steam cylinders of a flanged trunk or trunks by which they are
connected together provided with turned projections on the flanges to fit into bored
grooves or recesses formed on the end of the pump barrel or steam cylinder and

page_text: secured in position by independent bolts substantially as and for the purpose
described.
2. In a duplex pumping engine the combination with the pump barrel or pump
cylinder and the steam cylinder of the trunks C and D by which they are connected
together provided with flanges enclosing the movable parts and attached by
independent bolts whereby the structure is rendered rigid and compact from end to
end substantially as described.
3. In a duplex pumping engine a pump barrel B constructed with a dome or
arched roof N provided with openings n n in one piece therewith whereby large
loose covers and surface joints are dispensed with substantially as described.
4. A duplex steam pump having the several parts constructed and arranged in
combination substantially as berein described and shown and for the purpose set
forth.
Dated this 26th day of April 1894.
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.