CERTAIN IMPROVEMENTS IN VALVES POR HYDRAULIC MACHINES
Year: 1841

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, RICHARD
JENKYN, of Hayle, Cornwall, Machinist, 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 Twenty-sixth day of January, in the fourth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Richard Jenkyn, Her especial licence, full power, sole privilege and
authority, that I, the said Richard Jenkyn, my exors, adiiors, and assigns,
or such others as I, the said Richard Jenkyn, my exors, adiñiors, 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 "CERTAIN IMPROVEMENTS IN VALVES POR
HYDRAULIC MACHINES;" in which said Letters Patent is contained a proviso
that I, the said Richard Jenkyn, shall cause a particular description of the
nature of my said Invention, and in what manner the same is to be performed,
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 recited Letters
Patent, as in and by the same, reference being thereunto had, will more fully
appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Richard Jenkyn, do hereby declare the nature of the said Invention, and the
manner in which the same is to be carried into effect, that is to say:-

page_text: My Invention relates to that description of valves which is known by the
name of Valves for Hydraulic Machines, or any machines for raising water and
other liquids. In my improved valve or valves the improvements consist in
the addition of two or more valves (according to the size) to the single valves
and seating commonly used for hydraulic machines, so that every valve,
excepting the uppermost, may serve as a seating to that immediately over it.
By using a number of valves and arranging them in the manner above men-
tioned, a less than usual lift will be necessary, in consequence of each valve
admitting a quantity of water in proportion to its size; whereas in the usual
method, with only one valve, that valve then has to admit the whole quan-
tity of water required for the supplying of the pump, thereby causing it to
lift very high, with a consequent shock or blow in shutting, also a great waste
of water. But by using my improved valves the same rising column is divided
into three or more portions, and admitted by as many valves, so that the lift
of each individual valve will be proportionably less. In these valves or seats
there will also be a total absence of all obstructions in the waterway, there
being no cross bars, guide, spills, &c. used, or anything that might impede the
passing of the water into the pumps, as each valve is hung by joints in the
ordinary way. My improved valve may be used for the upper and lower
valves of all varieties of pumps.
In order to explain more clearly the construction and action of my improved
valves, I will now refer to and describe the Drawing representing plans,
elevations, and sections of it. The corresponding parts in the different views
are similarly figured or lettered.
DESCRIPTION OF DRAWING.
No. 1. An external view of the seat and valves.
No. 2. A back view of do. do.
No. 8. A section of the seat and valves.
No. 4. Top view of the seat and valves.
No. 5. Bottom view of do. do.
No. 6. Top of the seat without the valves.
No. 7. A section of the seat and valves.
No. 8. The valves shewing separately:-a, the uppermost valve; b and c
the valves and seats combined.
Now whereas I have above described the nature of my said Invention and
improvement in valves, and in what manner the same is to be carried inte
effect, I hereby claim the use of the additional valves constructed as abov
described, so that they may serve also as seats, and to be hung in the ordinar

page_text: Inrolled the Nineteenth day of July, in the year of our Lord Ono
thousand eight hundred and forty-one.