Improvements in or relating to Horizontal Pumps.
Year: 1892

page_text: Date of Application, 16th Apr., 1892
Complete Specification Left, 16th Jan., 1893-Accepted, 15th Apr., 1893
PROVISIONAL SPECIFICATION.
Improvements in or relating to Horizontal Pumps.
I, GEORGE MILLS of the Globe Ironworks Radcliffe near Manchester in the
County of Lancaster Engineer and Ironfounder do hereby declare the nature of
this invention to be as follows:-
This invention relates to horizontal pumping engines and the object of this
invention is to enable a duplex pump to be disconnected in the event of fracture or
accident so as to be worked as a single pump.
I obtain this object by the means herein after described and as illustrated in the
accompanying sheets of drawings.
In the views represented therein similar letters refer to similar parts.
Fig. 1 is plan of a horizontal duplex pump constructed according to this
invention.
Fig. 2 is a sectional elevation of delivery and suction channels drawn through
line A. A.
Fig. 3 is sectional plan of cylinders and valve box ports.
Fig. 4 shows a means whereby one of the valve box ports may be kept closed
while the other is in use.
Fig. 5 represents an adjusting cross head for joining the connecting rod and
piston rod.
In this invention I construct a horizontal duplex pump with duplicate cylinders a
and a' as represented drawn to an enlarged scale in Fig. 3.
I place a driving wheel b centrally between two connecting rods c and c¹ that are
connected to eccentrics d and d¹. These connecting rods cause the valve box
ports e and el to be opened and closed in the ordinary manner.
In order to work one pump only in case of accident and avoid the entire stoppage
of the engine, I form the valve rods and f¹ with screwed portions at a short
distance on either side of the bearings 9 and g' and pass said screwed portions
through a connection formed on each of the upper portions of the bearings g
and g
If it is found necessary to disconnect either of the connecting rods c or c¹ I slack
the nuts hand draw back either the rod for fl so as to cover one of the valve
box ports e or e¹, and said port is kept covered by fixing the rod by means of the
lock nuts and a set pin passed through the groove j.
By these or like means one pump can be worked while the other pump and its
connections are being repaired.
The ends of the discharge pipe and air vessel not in use may be stopped off by a
blank flange or like appliance. In order to ensure dead accuracy I employ an
adjusting cross head as represented in Fig. 4. for joining the connecting rod and
the piston rod and thereby dispense with the usual connections by means of levers,
rods, and like parts.
Dated this 14th day of April 1892.

page_text: COMPLETE SPECIFICATION.
Improvements in or relating to Horizontal Pumps.
GEORGE MILLS Globe Iron Works Radcliffe near Manchester in the County of
Lancaster Engineer & Ironfounder 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 horizontal pumping engines and the object of this
invention is to enable a duplex pump to be disconnected in the event of fracture or
accident so as to be worked as a single pump, & which is attained by & in
connection with the particular style & construction of the pumps; suction &
delivery parts of the pumps connecting pipes & pieces attached, together with the
particular style & construction of steam cylinders & valve box with attachment of
valve spindle & excentric rods & excentrics. I also provide an adjustable cross-
head which is herein after described.
The drawings to which I hereinafter refer are the drawings left with the
Provisional Specification.
In the views represented therein similar letters refer to similar parts.
Fig. 1. is plan of a horizontal duplex pump constructed according to this
invention.
Fig. 2. is a sectional elevation of delivery & suction channels drawn through
line A A.
Fig. 3 is sectional plan of cylinders & valve box ports.
Fig. 4. shows a means whereby one of the valve box ports may be kept closed
while the other is in use.
Fig. 5 represents an adjusting cross head for joining the connecting rod &
piston rod.
In this invention I construct a horizontal duplex pump with duplicate cylinders a
& a' as represented drawn to an enlarged scale in Fig. 3. 1 place a driving
wheelcentrally between two eccentric rods c. &c that are connected to
excentrics d & d these eccentric rods cause the valve box ports C & C' to be
opened & closed in the ordinary manner.
In order to work one pump only in case of accident & avoid the entire stoppage
of the engine, I form the valve rods f and f' with screwed portions at a short
distance on either side of the bearings and g' and pass said screwed portions
through a connection formed on each of the upper portions of the bearings g & g.
If it is found necessary to disconnect either of the excentric rods c or c', for the
purpose of this description I will suppose it is the rod c. that it is required to
disconnect. I withdraw the pin which will disconnect the rod c. I then screw
back the nuts and h² Fig. 4, and draw back the rod f so as to cover the valve
box port e.
The port is kept covered by fixing the rod with the lock nuts and
a set pin passed through the groove j. By these or like means one pump can be
worked while the other pump and its connections are being repaired. I provide
further one special design of suction pipe with two pump branches & suction pipe
branch the suction pipe branch coupling to pipes going to water supply, the two
pump branches each being coupled, one branch to one pump & the other branch to
the other pump. In the event I wish to uncouple one pump I blank up the end of
this pipe attached to that pump that is to be uncoupled. On the delivery side of
the pumps I provide a special connecting pipe between the two covers of the two
pumps, on the top of which sits the air vessel When I desire to disconnect one pump
I blank up that particular branch adjoining the pump that is required to be
disconnected by means of a blank flange or like appliance. I further provide &
employ an adjusting crosshead to ensure dead accuracy throughout as represented
in Figure 5 for joining the connecting rod & the piston rod and thereby dispense
with the usual connections by means of levers rods & like parts, the construction

page_text: of the crosshead being as follows-I fix at K. & K' a loose slipper to fit in the
cross head with a peg fitting in hole of cross head and as the top & bottom slippers
get worn, then I fix between the slipper & crosshead in the hole provided for this
a piece of sheet brass copper or iron, or as it gets more worn then the loose slipper
5 can be removed without interfering with the crosshead.
Having now particularly described and ascertained the nature of my said inven-.
tion and in what manner the same is to be performed I declare that what I
claim is
(1). An invention to enable a duplex pump to be disconnected in the event of a
0 fracture or accident so as to be worked as a single pump.
(2). The particular style & construction of pumps or water cylinders, suction &
delivery parts of the pumps-the particular design of the suction pipe & delivery
connecting pipe.
(3). The particular style & construction of steam cylinder & valve box with
5 attachment of valve spindle & eccentrics & rods.
(4). An adjustable crosshead.