Year: 1840

page_text: LONDON:
FRINTED BY GEORGE E. EYRE AND WILLIAM SPOTTISWOODE,
PRINTERS TO THE QUEEN'S MOST EXCELLENT MAJESTY:
PUBLISHED AT THE GREAT SEAL PATENT OFFICE,
25, SOUTHAMPTON BUILDINGS, HOLBORN.

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
CLARKE, of Islington, in the Parish of Liverpool and County of Lancaster,
Plumber and Glazier, send greeting.
WHEREAS by grant of Letters Patent of Her present Majesty Queen
Victoria, under the Great Seal of Great Britain, bearing date at Westminster,
the Fifth day of November now last past, Her Majesty was pleased to give
and grant unto me, the said John Clarke, my exors, adñiors, and assigns,
Her especial licence, full power, sole privilege and authority, that I, the said
John Clarke, my exors, adññors, and assigns, and every of us, by myself or by
my and our deputy or deputies, servants or agents, or such others as I, the
said John Clarke, my exors, admors, or assigns, should at any time agree with,
and no others, from time to time and at all times thereafter during the term
of years therein expressed, should and lawfully might make, use, exercise,
and vend my Invention of "AN HYDRAULIC DOUBLE-ACTION FORCE AND LIFT
PUMP," within England, Wales, and the Town of Berwick-upon-Tweed, in
such manner as to me, the said John Clarke, my exors, adiñors, and assigns,
or any of us, should in my or our discretions seem meet, for the term of
fourteen years from the date of the said grant now in recital next and imme-
diately ensuing, and fully to be complete and ended, according to the Statute
in such case made and provided, with a proviso that if I, the said John
Clarke, should not particularly describe and ascertain the nature of the said
Invention, and in what manner the same is to be performed, by an instru-
ment in writing under my hand and seal, and cause the same to be inrolled
ju Her Majesty's High Court of Chancery within six calendar months nex

page_text: .
and immediately after the date of those Her Majesty's Letters Patent, then
the said Letters Patent, and all liberties and advantages whatsoever thereby
granted, should utterly cease, determine, and become void, anything therein-
before contained to the contrary thereof in anywise notwithstanding.
NOW KNOW YE, that I, the. said John Clarke, in compliance with the
said proviso in the said Letters Patent contained, do hereby declare that the
nature of my Invention, and the manner in which the same is to be performed,
are fully described and ascertained in and by the following description thereof,
reference being had to the Drawing hereunto annexed, and to the figures and
letters marked thereon, that is to say :-
My Invention consists in the construction and application to forcing pumps
of a water chamber set forth and represented in the Drawing annexed to this
Specification, and marked O in each of the several Figures in the said Draw-
ing, and which said water chamber may be constructed of brass, iron, or any
other metal, and, together with the feather marked P, in Figures 5, 6, and 7.
of the said Drawing, intersecting such water chamber longitudinally, and
dividing it into two compartments, is cast in one piece, so that when fastened
by the screws marked respectively M in the said Drawing, Figures 8, 5, and 7,
to the hoods marked respectively L and K, as shewn in Figures 5 and 7 of
the said Drawing, (with leather or other soft material interposed between the
joints in the usual manner,) the said water chamber is rendered secure and
water-tight, whilst, by loosening the said screws the hood L may be removed,
and the discharge valves, which are attached to the upper side of the said
water chamber, and marked respectively H and I in the said Drawing,
Figures 1, 2, 4, 5, and 7, may be examined, cleaned, and repaired, and at
the same time, by the removal of the hood K, to which the suction valves
marked respectively F and G in Figures 1, 2, 5, and 7, of the said Drawing,
respectively are attached, those valves also may be examined, cleaned, and
repaired. This my
Invention is equally applicable to forcing pumps, whether
constructed with only one or with any number of barrels, in which latter case
the said water chamber may still be constructed and cast in one piece, as
shewn in Figures 8, 9, 10, and 11 of the said Drawing, which represent such
water chamber as applicable to a forcing pump with two barrels.
And I claim the Invention of the said water chamber so constructed, of
whatever form it may be made, and whether it is applied to pumps for mines,
fire engines, ships, or any other of the purposes for which forcing pumps are
ordinary used.
And I also claim the Invention of constructing and casting the barrel of
the and the side chamber marked D, and shewn in Figures 1, 2, and 3
pump

page_text: of the said Drawing, in one piece of metal, which may be either brass, iron,
or any other metal, whereby the expence and the risk of leakage which would
be occasioned by constructing the said side chamber of a distinct tube or pipe,.
and connecting it, by means of rivetting or soldering or in other mode,. with
the barrel of the pump, are avoided.
And I hereby declare that I do not claim as my Invention any part of the
said pump represented in the said Drawing, other than the parts herein-before
specified; that such other parts are introduced into and described by the said
Drawing, and the references and descriptions thereunto attached, for the sole
purpose of rendering the above Specification of my said Invention more clear,.
explicit, and intelligible.
In witness whereof, I, the said John Clarke, have hereunto set my hand
and seal, the Thirtieth day of April, in the year of our Lord One.