IMPROVEMENTS IN PUMPS
Year: 1867

page_text: LETTERS PATENT to George Wilkinson, of St. Leonard's Road, Bromley,
in the County of Middlesex, for the Invention of "IMPROVEMENTS IN
PUMPS."
Sealed the 24th March 1868, and dated the 26th September 1867.
PROVISIONAL SPECIFICATION left by the said George Wilkinson at the
Office of the Commissioners of Patents, with his Petition, on the
26th September 1867..
I, GEORGE WILKINSON, of St. Leonard's Road, Bromley, in the County of
Middlesex, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN PUMPS," to be as follows:-
I arrange the
This Invention has for its object improvements in pumps.
suction pipe of the pump to rise up at the side of the pump cylinder in a
chamber provided for it. The cylinder communicates at its lower end with
this chamber by a passage having a valve opening into the cylinder, and the
cylinder contains a valved piston or bucket having a short and rapid stroke
given to it usually by a crank and multiplying gear. The suction valve is
mounted on the top of the suction pipe at a level above the piston or bucket
so that this is necessarily at all times immersed in the water. The water is
delivered through the piston or bucket, passing the clack or valve therein,
and it escapes by a spout or delivery pipe at the upper end of the cylinder
above the piston or bucket.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said George Wilkinson in the Great Seal Patent Office on the
26th March 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
WILKINSON, of St. Leonard's Road, Bromley, in the County of Middlesex
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria by Her Letters
Patent, bearing date the Twenty-sixth day of September, in the year of our
Lord One thousand eight hundred and sixty-seven, in the thirty-first year of
Her reign, did for Herself, Her heirs, and successors, give and grant unto
me, the said George Wilkinson, Her special licence that I, the said George
Wilkinson, my executors, administrators, and assigns, or such others as I,
the said George Wilkinson, my executors, administrators, and assigns, should
at any time agree with, and no others, from time to time and at all times
thereafter during the term therein expressed, should and lawfully might make,
use, exercise, and vend, within the United Kingdom of Great Britain and
Ireland, the Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS
IN PUMPS," upon the condition (amongst others) that I, the said George
Wilkinson, my executors or administrators, by an instrument in writing
under my, or their, or one of their hands, and seals, should particularly
describe and ascertain the nature of the said Invention, and in what manner
the same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately after
the date of the said Letters Patent.
NOW KNOW YE, that I, the said George Wilkinson, do hereby declare
the nature of the said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement thereof, that is to say :-
This Invention has for its object improvements in pumps. I
arrange the
suction pipe of the pump to rise up at the side of the pump cylinder in a
chamber provided for it. The cylinder communicates at its lower end with
this chamber, and the cylinder contains a valved piston or bucket having a
short and rapid stroke given to it usually by a crank and multiplying gear.
The suction valve is mounted on the top of the suction pipe at a level above
the piston or bucket, so that this is necessarily at all times immersed in the
water. The water is delivered through the piston or bucket passing the clack
or valve therein, and it escapes by a spout or delivery pipe at the upper end
of the cylinder above the piston or bucket.

page_text: more fully the manner of performing the same.
DESCRIPTION OF THE DRAWINGS.
On Sheet 1 of the Drawings Figure 1 shows a side view, Figure 2 a front
view, and Figure 3 a vertical section of a pump constructed as above
described with a suction pipe rising up at the side of the pump cylinder in a
chamber provided for it.
In these Figures a is the pump cylinder; 6, the chamber up in which rises
the upper end of the suction pipe c; d is a small tank which receives the
water as it is pumped up, and from which passes the delivery spout d'. I
by preference form this tank in one piece or casting with the chamber b, with
the pump cylinder, and also with the upper end of the suction pipe, as is
shown by the Drawings. is a passage formed in the casting by which the
lower end of the pump cylinder is connected with the lower end of the
chamber b. The upper end of the suction pipe rises nearly to the top of
the chamber 6 so as to be above the level of the pump bucket or piston. At
the upper end of the suction pipe is the suction valve c¹; this valve is passed
into its place through an opening in the top of the chamber b; this opening
is closed fluid-tight by a cover b¹ held down by means of a screw e screwed
through a cross bar e which passes across from side to side of the tank d, as
is seen in Figure 4, which is a plan view of such parts of the pump as are
shown in Figure 3.
In the arrangement shown on Sheet 1 the pump bucket or piston bas a
short and rapid stroke given to it from a crank f¹ on the shaft f; this shaft
has a fly wheel f fast upon it, and also a small pinion which is driven by an
endless chain from a chain wheel g¹ on a shaft g, to which motion is imparted
by a crank handle g. The bearings which support the shafts ƒ and g are
received in forks h¹ formed at the upper ends of two standards h, which at
their lower ends are fixed to two opposite sides of the tank d. The bearings
are separated from one another by distance pieces, and are held down in
their places by keys 1, as shown. Other arrangements than that above
described might however be adopted for giving a short rapid stroke to the
pump bucket or piston.
On Sheet 2 of the Drawings is shown an elevation and plan of a double
pump; this pump
is driven by two crank handles on the shaft g, which in this
case is placed at one side of the shaft f in place of above this shaft, as in the
arrangement shewn on Sheet 1. Each of the pumps is similar in its con-
struction to the pump already described, and the pump buckets or pistons of

page_text: the two pumps are driven from crank pins f¹ carried by discs at the two ends
of the shaft f, which shaft is driven from the shaft g, as clearly shown. The
crank pins f¹ can be set nearer to or further from their central axis f in the
manner shown at Figure 7, so that the length of stroke given to the pump
buckets may be adjusted according to the height from which the water has to
be raised, or according to the amount of power available for working the
pump.
In witness whereof, I, the said George Wilkinson, have hereunto set my
hand and seal, this Twenty-fifth day of March, in the year of our Lord
One thousand eight hundred and sixty-eight.
GEORGE WILKINSON. (L.S.)