IMPROVEMENTS IN PUMPS FOR IRRIGATING AND OTHER PURPOSES
Year: 1878

page_text: LETTERS PATENT to John Guy Wilson, of 71, Market Street, in the City of
Manchester, and 8, Quality Court, Chancery Lane, in the City of London,
Mechanical Engineer and Patent Agent, for the Invention of "IMPROVEMENTS
IN PUMPS FOR IRRIGATING AND OTHER PURPOSES." A communication from
abroad by Adolfo Ferrari, of Milan, in the Kingdom of Italy.
PROVISIONAL SPECIFICATION left by the said John Guy Wilson at the Offic
of the Commissioners of Patents on the 21st September 1878.
"
JOHN GUY WILSON, of 71, Market Street, in the City of Manchester, and 8,
Quality Court, Chancery Lane, in the City of London, Mechanical Engineer and
Patent Agent.
IMPROVEMENTS IN PUMPS FOR IRRIGATING AND OTHER PURPOSES.'
A communication from abroad by Adolfo Ferrari, of Milan, in the Kingdom of
Italy.
This Invention relates to the construction of a simple and efficient pump, in
which no cranks, eccentrics, or other gearing are employed, and which is specially
designed to be worked by horse gear for irrigating and other purposes.
Now this Invention consists of an upright shaft to which the horse gear is
applied; this shaft carries a cam for actuating the pump pistons, which reciprocate
in the case of a double-cylindered pump in a pair of shallow cylinders arranged on
either side and equidistant from the upright shaft herein-before mentioned, and
communicating together at the top in one common trough.
The rods of the pistons each pass between a pair of rollers mounted in a cross
head, and are so guided up and down, whilst a friction bowl mounted at the top of
each piston rod rests upon the upper surface of the cam herein-before mentioned,
Porine B

page_text: and so partakes of the motion of such cam, such upper surface being constructed
with three suitably formed projections so timed and arranged that as the cam
revolves the pump pistons are lifted in successive rotation by such projections, and
are free to fall by their own gravity.
A pump constructed in accordance with this Invention is worked with great ease,
owing to the short distance travelled by the pistons, and to the fact that the pistons
are never being lifted at the same time, which ensures that the horse or other motive
power emploved is always lifting one constant weight.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Guy Wilson in the Great Seal Patent Office on the 21st March
1879.
JOHN GUY WILSON, of 71, Market Street, in the City of Manchester, and 8,
Quality Court, Chancery Lane, in the City of London, Mechanical Engineer and
Patent Agent.
"IMPROVEMENTS IN PUMPS FOR IRRIGATING AND OTHER PURPOSES."
A communication from abroad by Adolfo Ferrari, of Milan, in the Kingdom of
Italy.
This Invention relates to the construction of a simple and efficient pump, in
which no cranks, eccentrics, or other gearing are employed, and which is specially
designed to be worked by horse gear for irrigating and other purposes.
And in order that the said Invention may be the more readily understood and
carried into practical effect I have hereunto annexed a Drawing illustrating a pump
constructed in accordance with these improvements, Fig. 1 being a front sectional
view, and Fig. 2 a side sectional view of the same; Fig. 3 represents a plan, and
Fig. 4 a front exterior view of the cam detached.
In all the views A is an upright shaft, to the upper extremity of which the horse
pole B is affixed. This shaft carries a cam C (seen detached in Figs. 3 and 4) which
is provided on its upper surface with three suitably formed projections C¹ so timed
and arranged that as the cam revolves the pump pistons (herein-after described)
are lifted in successive rotation by means of such projections, and are free to fall by
their own gravity. D, D, are the pump pistons, which reciprocate up and down in
the case of a double-cylindered pump in a pair of shallow cylinders E, E, arranged
on either side and equidistant from the shaft A; these cylinders communicate
together at the top in one common trough F, which is provided with an outlet
mouth F¹. The rods G, G, of these pistons pass between the antifriction rollers H
mounted in the cross head I, and are so guided up and down, whilst an antifriction
bowl J mounted at the top of each piston rod G rests upon the upper surface of the
cam C, and so partakes of the motion of such cam. Each of the cylinders commu-
nicates with one common inlet through the breeches pipe K, and is provided with
an inlet valve L, and the pistons, which fit accurately in the cylinders, are packed
with leather or india-rubber, and are fitted by preference with three flap valves M
opening outwards, as illustrated.
The action of this improved pump may be described as follows:-As the shaft A
revolves, carrying with it the ram C, the pistons which are suspended upon the cam
projection C¹ by means of their antifriction bowls J, as herein-before described, are
caused to be raised successively until the highest points of such projections pass
beneath the antifriction bowls, when the pistons are free to fall gradually by their
own gravity until their antifriction bowls reach the lower part of such projections,
when they are ready to be raised again.
A pump constructed in accordance with this Invention may have two or more
cylinders, and may be worked with great ease, owing to the short distance travelled
by the pistons, and to the fact that the pistons are never being lifted at the same
time, which ensures that the horse or other motive power employed is always lifting
one constant weight.
Having thus particularly described and ascertained the nature of the said Inven-
tion, together with the best methods with which I am acquainted for carrying the
same into practical effect, I wish it to be distinctly understood that I do not confine
myself to the precise details, relative proportions, or dimensions of the various parts
of the improved pump herein-before described and illustrated on the accompanying
Drawing, as the same may be considerably varied without departing from the Inven-
tion, and that I claim,-
1st. The general construction and arrangement of pump, substantially as herein-
before described and illustrated on the accompanying Drawing.

page_text: 2nd. The use and application of a cam for successively actuating the pistons of a
pump, substantially as herein-before described and illustrated on the accompanying
Drawing.
In witness whereof, I, the said John Guy Wilson, have hereunto set my hand
and seal, this 20th day of March, in the year of our Lord One thousand
eight hundred and seventy-nine.
JOHN G. WILSON. (LS.)