IMPROVEMENTS IN SHIPS' AND OTHER PUMPS
Year: 1858

page_text: LETTERS PATENT to Christopher James Redpath, of Limehouse, in the
County of Middlesex, Engineer, for the Invention of "IMPROVEMENTS
IN SHIPS' AND OTHER PUMPS."
Sealed the 25th November 1858, and dated the 14th September 1858.
PROVISIONAL SPECIFICATION left by the said Christopher James
Redpath at the Office of the Commissioners of Patents, with his
Petition, on the 14th September 1858.
I, CHRISTOPHER JAMES REDPATH, of Limehouse, in the County of Middlesex,
5 Engineer, do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN SHIPS AND OTHER PUMPS," to be as follows:-
My said Invention refers to improvements on the Invention of ships and
other pumps for which Letters Patent were granted to George Wilkinson,
bearing date the Fourth day of March, in the year of our Lord, 1852, and
O consists in the application of horizontal instead of the vertical barrels hitherto
used for working the plungers of such pumps, whereby two or more valve
barrels may be operated by a single plunger.
The horizontal plunger barrels of my Invention may be placed so as to use
two or more of such barrels without the addition of valve barrels. My said
5 improvements embrace lift, force, and other pumps.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Christopher James Redpath in the Great Seal Patent Office
on the 7th March 1859.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHRISTOPHER
JAMES REDPATH, of Limehouse, in the County of Middlesex, Engineer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourteenth day of September, in the year of our
Lord One thousand eight hundred and fifty-eight, in the twenty-second year
of Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Christopher James Redpath, Her special licence that I, the said
Christopher James Redpath, my executors, administrators, and assigns, or
such others as I, the said Christopher James Redpath, my executors, adminis-
trators, 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 King-
dom of Great Britain and Ireland, the Channel Island and Isle of Man, an
Invention for "IMPROVEMENTS IN SHIPS' AND OTHER PUMPS," upon the condition
(amongst others) that I, the said Christopher James Redpath, 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 Christopher James Redpath, do
hereby declare the nature of my said. Invention, and in what manner the
same is to be performed, to be particularly described and ascertained in and
by the following statement:-
My said Invention refers to improvements on the Invention of "Ships' and
other Pumps," for which Letters Patent were granted to George Wilkinson,
bearing date the Fourth day of March, 1852;; and for the better understanding
of the same I will now proceed. to detail the particulars thereof, reference
being had to the Drawings hereunto annexed, in which the same letters indicate
corresponding parts throughout.
1,
DESCRIPTION OF THE DRAWINGS.
. Figure 1 is a front elevation of one arrangement of ship's pumps with my
said improvements; Figure 2 is a side elevation of Figure 1; Figure 3 is a

page_text: vertical section of the valve barrels through the line y, y, and Figure 4 is a
sectional plan taken through the horizontal line 2, 2, of the valve barrels of the
same; Figure 5 is a front elevation of another arrangement of ships' pumps;
Figure 6 is a side elevation, and Figure 7 is a vertical section through the line
y', y', of Figure 5; and Figure 8 is a sectional plan of the same through the
line,, showing the water passages. A, A', are horizontal pump barrels ;
B, B', the valve barrels and chambers; C, C¹, the upper valve, and D, D',
the lower valve.
It will be thus observed that my said Invention mainly consists in the
application of horizontal instead of the vertical barrels hitherto used for
working the plungers of such pumps, together with the mechanical arrange-
ments requisite for carrying such modification into practical operation, whereby
two or more valve barrels may be operated by a single plunger. I would
here also remark that the horizontal plunger barrels of my Invention may be
placed so as to use two or more of such barrels without the addition of valve
barrels, and that my said improvements embrace the application of the same
to force pumps and other like suitable pumps.
Having thus fully described my said Invention, and the best methods I am
acquainted with for putting the same into practice, I desire it to be understood
that I do not limit myself to any particular dimensions of the several parts, or
to the materials of which they may be constructed; but what I do claim as my
said Invention is the peculiar arrangement and construction of ships' and other
pumps working one or more horizontal barrels, as described.
In witness whereof, I, the said Christopher James Redpath have
hereunto set my hand and seal, this Seventh day of March, in the
year of our Lord 1859.
C. J. REDPATH.
(L.S.)