AN IMPROVED HYDRAULIC APPARATUS
Year: 1841

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME; I, JOHN
WALKER, of Crooked Lane, King William Street, in the City of London,
send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Eighth day of March, in the fourth year of Her reign, did,
for Herself, Her heirs and successors, give and grant unto me, the said John
Walker, Her especial licence, full power, sole privilege and authority, that I,
the said John Walker, my exors, admors, and assigns, and such. others as I,
the said John Walker, my exors, adñors, 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, within England, Wales, the Town of Berwick-upon-Tweed, the
Islands of Guernsey, Jersey, Alderney, Sark, and Man, and also in all Her
Majesty's Colonies and Plantations abroad, my Invention of "AN IMPROVED
HYDRAULIC APPARATUS;" in which said Letters Patent is contained a proviso,
that I, the said John Walker, shall cause a particular description of my said
Invention, and the manner in which the same is to be performed, to be enrolled
in Her 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

page_text: in and by the same, reference being thereunto had, will more fully and at
large appear.
NOW KNOW YE, that, in pursuance of the said proviso, I, the said John
Walker, do hereby declare that the nature of my said Invention, and the
manner in which the same is performed, are fully ascertained and set forth in
and by the following description thereof, that is to say:-
Figure 1 is an external view, and Figure 2 a section, of my said Improved
Hydraulic Apparatus, in the form in which I employ it for raising and
projecting water in jets, either for watering gardens, or extinguishing fire, or
any other purpose. The body of the apparatus consists of a metal tube a, a,
from six to twelve feet in length, which may be either in one piece, or for
convenience separated into two or more lengths, screwing into one another.
The tube for two thirds of its length is about one inch and a half in diameter,
but in the last or upmost third of its length the diameter diminishes gradually
from one inch and a half to half an inch. To the lower end or bottom of the
tube there is affixed a conical-shaped piece b, furnished with a valve d, opening
upward, the passage through which is of equal area to that of the body of
the tube, and upon the upper end or top of the tube there is screwed a nosel
or jet pipe c. The mode of operating with the apparatus is as follows:-
The bottom or conical-shaped piece b is plunged into the cistern, well, pond,
or other source of supply, and the tube being held in a vertical or inclined
position, the apparatus is worked up and down by hand, or any other suitable
power, with a sort of jerking motion. At each stroke, more or less of the
water finds its way into the tube through the valve d, and when filled, which
is in a minute or two, every succeeding stroke causes a jet of water to be
projected through the nosel c to a height or distance of thirty feet and more.
When water or any other fluid is merely to be raised into a cistern, and not
delivered in the form of jets, an elbow pipe is substituted for the jet pipe, as
shewn in Figure 3. When a continuous flow is required, the upper part of
the moveable tube, instead of being equipped with the jet- pipe c, has leather
.or other flexible pipe screwed on to it, the other end of which is inserted
into a fixed air vessel, and closed by a valve opening upward. The inter-
mittent jets are collected in this air vessel, and compressing the air contained
.therein, the water or other fluid is forced out by the reaction of the compressed
air through a discharging orifice in one continuous stream. When large
quantities of water have to be raised, as for example, from reservoirs for the
supply of houses, or from flooded lands, two or more of these machines may
be suspended from the extremities of an equal-armed lever, so as to counter-
balance each other, and deliver the water alternately, being worked by suitable
machinery, impelled by manual labour, or any other available power.

page_text: And having now described the nature of my said Invention, and the manner
in which the same is to be performed, I declare that what I claim is,―
First, the Improved Hydraulic Apparatus of the form herein-before described,
and deriving its power of raising and projecting water or any other fluid in
the manner also herein-before set forth, however such apparatus may be
worked, whether by manual labor, or by suitable machinery moved by steam,
water, or any other power, and whether used in a vertical, inclined, or
horizontal position; and,
Secondly, I claim the said apparatus as used in connection with an air
vessel for obtaining a continuous flow of water or other fluid, or in connection
with any other appendage by which its applicability as a machine for raising
or projecting fluids may be varied, facilitated, or extended. .And such my said
Invention being, to the best of my knowledge and belief, entirely new, and
never before used within that part of Her said Majesty's United Kingdom of
Great Britain and Ireland called England, Her Dominion of Wales, Town of
Berwick-upon-Tweed, the Islands of Guernsey, Jersey, Alderney, Sark, and
Man, or in any of Her Majesty's Colonies and Plantations abroad, I do
hereby declare this to be my Specification of the same, and that I do verily
believe this my Specification doth comply in all respects, fully and without
reserve or disguise, with the proviso in the said berein-before in part recited
Letters Patent contained; wherefore I hereby claim to maintain exclusive
right and privilege to my said Invention.
In witness whereof, I have hereunto set my hand and seal, this Eighth
day of September, in the year of our Lord One thousand eight hundred