Improvements in Pumps.
Year: 1896

page_text: Date of Application, 13th Jan., 1896
Complete Specification Left, 18th June, 1896-Accepted, 25th July, 1895
PROVISIONAL SPECIFICATION.
Improvements in Pumps.
We, JAMES COMPTON MERRYWEATHER of Greenwich Road, S.E. in the County
of Kent, Engineer, and GORDON HARRIS of 133 Lewisham Road, S.E. in the
County of Kent, Engineer, do hereby declare the nature of this invention to be as
follows:-
Our invention consists in the construction of. a pump specially suitable for driving
by means of an electric or other high speed motor.
The advantage of a treble barrel pump is generally acknowledged, but heretofore
when driven by an electric motor gear wheels have been provided to reduce the
speed whereas our pump is arranged for being driven direct. We arrange the three
pump barrels radially from the centre of the crank shaft, at equal angles, and in the
same plane, thus the space occupied longitudinally is greatly economised and we
arrange the crank shaft so that the stroke or travel of each piston shall be very short,
in order that the velocity of water in the passages and through the valves may not be
excessive when the pump is running at a high speed.
Dated this 11th day of January 1896.
JAMES COMPTON MERRYWEATHER.
GORDON HARRIS.
We, JAMES COMPTON MERRYWEATHER, of Greenwich Road, S.E. in the County
of Kent, Engineer, and GORDON HARRIS, of 133 Lewisham Road, S.E. in the
County of Kent, 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 consists in the construction of a pump specially suitable for driving
by means of an electric, or other high speed motor.
The pump consists of three barrels arranged radially and in the same plane.
Each pump is single acting, thus the same effect is obtained as regards the constancy
and the flow as from an ordinary treble barrel pump, but great economy in space is
effected, as well as in weight.
In the drawing, Figure 1 shews the section of a pump and Figure 2 a side view.
The three barrels A, B, and C, are arranged radially from the centre of the
crank shaft D, and are placed at equal angles with each other. The pistons in the
pumps are not shewn in the drawing, but are of the ordinary type, and are driven
by means of connecting rods from an eccentric E on the crankshaft. The stroke
of each piston is preferably small, thus the number of strokes per minute may be
high and the velocity of the water may be kept down to a moderate point and not
in excess of that through an ordinary pump. The valve boxes F, G, and H, each
contain two valves, one on the suction side and one on the delivery, and passages
are provided connecting the three suction valves with suction inlet, and another
Price 1

page_text: passage connecting the three delivery outlets with a common outlet J. For the
purpose of starting the pump against a head we, in some cases, provide a bye-pass
actuated by a wheel K, to put the suction and delivery passages in communication
with each other.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is ;-
1. The construction of a pump consisting of three barrels arranged radially from
the centre and preferably at equal angles and in the same plane.
2. The arrangement of passages connecting the three barrels with the suction inlet
and delivery outlet respectively; substantially as described.
Dated this 18th day of June 1896
J. C. MERRYWEATHER.
GORDON HARRIS.