IMPROVEMENTS IN SHIPS AND OTHER PUMPS
Year: 1852

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
WILKINSON, of Strathmore Terrace, Shadwell, Engineer, send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Royal Letters Patent under the Great Seal of the United Kingdom of Great
Britain and Ireland, bearing date at Westminster, the Fourth day of March,
One thousand eight hundred and fifty-two, in the fifteenth year of Her reign,
did, for Herself, Her heirs, and successors, give and grant unto me, the said
George Wilkinson, my exors, admors, and assigns, Her especial licence, full
power, sole privilege and authority, that I, the said George Wilkinson, my
exors, admors, and assigns, or such others as I, the said George Wilkinson,
my exors, admors, or assigns, should at any time agree with, and no others,
from time to time and at all times during the term of years therein expressed,
should and lawfully might make, use, exercise, and vend, within England,
Wales, and the Town of Berwick-upon-Tweed, my Invention of "IMPROVEMENTS
IN SHIPS AND OTHER PUMPS ;" in which said Letters Patent is contained a
proviso, that I, the said George Wilkinson, shall cause a particular descrip-
tion of the nature of my said Invention, and in what manner the same is to
be performed, by an instrument in writing under my hand and seal, to be
inrolled in Her said Majesty's High Court of Chancery within six calendar
months next and immediately after the date of the said in part recited
Letters Patent, as in and by the same, reference being thereunto had, will
more fully and at large appear.

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
George Wilkinson do hereby declare that the nature of my said Invention,
and the manner in which the same is to be performed are fully described and
ascertained in and by the following statement thereof, reference being had to
the Drawings hereunto annexed, and to the figures and letters marked thereon,
that is to say-
My Invention consists of a certain combination or arrangement of valve
chest of ships and other pumps, whereby the upper valve may be of larger
diameter than the lower valve, and allow of the lower valve being got at
and removed through the upper valve, and the parts connected with, and 1
carrying such valves be greatly improved in their arrangement.
And in order that my Invention may be fully understood and readily carried
into effect, I will proceed to describe the means pursued by me.
DESCRIPTION OF THE DRAWINGS.
Figure 1 shews an exterior side view of a pump constructed with my 1
improvements; Figure 2 is a vertical section of the same; Figure 3 is
a horizontal section thereof; the other detached Figures show different views
of the valves and their seats separately. In each of these Figures the same
letters of reference are used to indicate the same parts. a is the valve chest ;
b, the pump barrel; and c, the suction pipe which ascends into the valve 2
chest of the pump, as is shown; on the upper part of the suction pipe
is fixed or may be cast an enlargement or cup c¹, which retains water to
cover the lower valve at all times, and owing to the suction pipe rising
into the valve box, there will at all times be water below the piston of the
pump; the pump barrel and the valve chest I prefer to be of one casting, as 2
is shewn. d is the lower valve which has its seat on the upper part of the
suction pipe. The form and construction of the valve I prefer is shewn in
the Drawing, and if desired, the suction pipe and this valve may be of large
dimensions, and of a diameter as large as the pump barrel; e is the upper
valve, and fits seat, the construction of each of which is clearly shewn in the 8
Drawings, the same may however be varied. It will be seen that the diameter
of the valve e and the opening in its seat are such that the lower valve may
readily be got at through the opening covered by the upper valve, and if
necessary the lower valve may be taken up through the opening in the
seat of the upper valve to be repaired or otherwise. In the piston of the 3
pump there are two small holes covered by flaps g, of leather, gutta percha,
or other suitable material, through which holes any air which may accu-

page_text: mulate may pass, and any water which may flow through will pass off on
the upstroke into the valve chest. Figures 4, 5, 6, & 7 show a section and
other views of an arrangement of valve and valve seat which I sometimes use
in the place of the valve and seat e, f.
Having thus described the nature of my Invention, and the manner of
performing the same, I would have it understood that I do not confine myself
to the details as herein given so long as the peculiar combination of parts be
retained, and I make no claim to the separate and ordinary parts of pumps
herein described; but what I claim is the combination or arrangement
of parts herein explained.
In witness whereof, I, the said George Wilkinson, have hereunto set
my hand and seal, this Thirtieth day of August, in the year of our
Lord, One thousand eight hundred and fifty-two.