IMPROVEMENTS IN PUMPING ENGINES
Year: 1878

page_text: LETTERS PATENT to John Gwynne, of the Firm of John and Henry Gwynne,
of Hammersmith Iron Works, Hammersmith, in the County of Middlesex;
and 89, Cannon Street, in the City of London, Hydraulic and Mechanical
Engineers, for the Invention of "IMPROVEMENTS IN PUMPING ENGINES."
Sealed the 20th December 1878, and dated the 23rd July 1878.
PROVISIONAL SPECIFICATION left by the said John Gwynne at the Office
of the Commissioners of Patents on the 23rd July 1878.
JOHN GWYNNE, of the Firm of John and Henry Gwynne, of Hammersmith Iron
Works, Hammersmith, in the County of Middlesex, and 89, Cannon Street, in the
City of London, Hydraulic and Mechanical Engineers. "IMPROVEMENTS IN PUMPING
ENGINES."
My Invention relates to pumping engines in which centrifugal pumps are driven
by steam power, and has for object to render the pumps readily accessable, and to
enable their suction and discharge pipes to be swivelled and set at any angle
without interfering with the driving engine. For these purposes in constructing
on my plan a portable pumping engine with boiler I arrange the motor and pump
below the boiler on a longitudinal frame, which I support at one end by the fire-
box, and at the other end by the fore carriage bracket, and I construct the pump case
and the frame of the motor each with a flange, so arranged that they may be secured
together by bolts or fastenings, and the pump case may be swivelled to alter the angles
of the suction and discharge pipes. This method of making the suction and dis-
charge pipes adjustable. may be used in other constructions of centrifugal pumping
engines than that above described, whether portable or stationary.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Gwynne in the Great Seal Patent Office on the 23rd January
1879.
JOHN GWYNNE, of the Firm of John and Henry Gwynne, of Hammersmith Iron
Works, Hammersmith, in the County of Middlesex, and 89, Cannon Street, in the
City of London, Hydraulic and Mechanical Engineers. "IMPROVEMENTS IN PUMPING
ENGINES."
I arrange the pump case with the suction and discharge pipes to swivel, so that
the suction and discharge pipes can be set at any angle without interfering with the
driving engine.
Referring to the accompanying Drawings,―
Fig. 1 shews in side elevation to a scale of one inch and a half to one foot,
portions of a six-inch portable pumping engine embodying my improvements;
Fig 2 is a plan of Fig. 1; Fig. 3 is a vertical section in the line A, B, of Fig. 1.
Fig. 4 is a cross sectional view to a larger scale, and shews my mode of con-
necting the pump case with the motor frame so as to enable the centrifugal pump
case with its suction and discharge pipes to be swivelled. The motor and pump
are arranged below the boiler on a longitudinal frame which is supported at one
end by the fire-box, and at the other end by the fore carriage bracket.
The pump case and the frame of the motor are constructed each with a flange so
arranged that they may be secured together by bolts or fastenings, and the pump
case may be swivelled to alter the angles of the suction and discharge pipes.
1 is the pump case; 2, the motor frame; 3, the flange of the pump case; 4, the
flange of the motor frame; 5 is a circular T shaped channel formed in the face of
the flange 3; 6 is a turned circular fillet projecting from the face of the flange 4, a
and which takes into and fits accurately the narrower portion or neck of the
T shaped channel 5, and being concentric with the pump shaft is able to turn in
the said channel when the pump case is revolved; 7 is a turned hollow boss which
fits accurately a corresponding hole in the motor frame, and is able to turn therein
when the pump case is revolved. By the fillet 6 and hollow boss 7, the concen-
tricity of the pump case with the shaft is maintained. 8 are bolts or fastenings
whereby the pump case flange 3 is secured to or connected with the flange 4 of
the motor frame. The heads of these bolts or fastenings 8 are made as shewn in
Fig. 4, and they fit freely in the wider part of the T shaped channel 5; when the
nuts are tightened the pump case is held by the bolts with its flange firmly against
that of the motor frame; when the nuts are not tightened up the bolt heads allow
of the flange 3, and consequently the pump case, being turned or swivelled so as to
bring the suction and delivery passages to any desired angle without interfering
with the motor. The bolt heads are introduced into the T shaped channel through
a Tshaped opening passing through the periphery of the flange 3 and into the
Tshaped channel 5, as shewn in Fig. 4; 10 is a cover to the said opening. When
the bolts have been introduced into the T shaped channel, and the pump case has
been placed in a position concentric with the shaft, the bolt ends are moved into
positions opposite the holes in the motor frame flange, the pump case is then moved
home, and the nuts are screwed on.
My method of making the suction and discharge pipes adjustable may be used in
other constructions of pump than that above described.
Figs. 5, 6, 7, and 8 shew to a scale of three inches to one foot, a twelve-inch sta-
tionary pumping engine, wherein the pump case is arranged to swivel according to
my Invention, and will be readily understood from the Drawing in which the same 5
numbers denote like parts.
Fig. 9 is a sectional view of a modification in which the T shaped channel is
formed in the frame which carries the pump shaft bearings, and the fillet 6 and boss 7

page_text: are formed with the pump case.
round the pulley 11.
The shaft is actuated by a band or strap passing
Having thus described the nature of my Invention, and explained the manner of
carrying it into practical effect, I would have it understood that what I consider to
be novel and original, and therefore claim as secured to me under the Letters Patent
herein-before in part recited is, the arranging the pump case to swivel, substantially
as herein-before described, with reference to the accompanying Drawings for the
purpose specified.
In witness whereof, I, the said John Gwynne, have hereunto set my hand
and seal, this Twenty-third day of January, in the year of our Lord One
thousand eight hundred and seventy-nine.
JOHN GWYNNE. (L.S.)