A New FLEXIBLE VALVE FOR REGULATING THE FLOW OF FLUIDS IN PIPES, ALSO USED PRO
Year: 1870

page_text: LETTERS PATENT to George Thorneloc, of No. 34, London Wall,
in the City of London, Gas Engineer, for the Invention of "A New
FLEXIBLE VALVE FOR REGULATING THE FLOW OF FLUIDS IN PIPES, ALSO USED
PROVISIONAL SPECIFICATION left by the said George Thorneloe at the
Office of the Commissioners of Patents, with his Petition, on the,
13th January 1870.
;
'I, GEORGE THORNELOE, of No. 34, London Wall, in the City of."
5 London, Gas Engineer, do hereby declare the nature of the said. Inven-.:
tion for "A NEW FLEXIBLE VALVE FOR REGULATING THE FLOW OF FLUIDS
IN PIPES, ALSO USED IN APPARATUS FOR THE MANUFACTURE OF GAS," to be as
follows:
:
.
This Invention consists of a valve formed by a metallic plate or disc
in the shape of a hollow cone, so constructed that a force applied at:
the apex becomes equally distributed around the outer edge of its base.
F

page_text: It is made of such a thickness as to be slightly flexible under the
pressure which closes it, in order that its edge shall adapt itself to the
face or seat of the valve and make a tight joint. The edge or face of the
cone is turned to a true surface and may vary in thickness, but it is
found best in practice to make the surfaces in contact about one-eighth
of an inch wide in order that there may be as little, chance as possible
of the lodgment of dirt or grit, which might prevent the faces of the
valve coming into perfect contact. The valve may be moved to and fro
by means of a rack and pinion, a screw, or any other method usually
employed for that purpose. The force to close the valve is applied at
its centre, either by means of a metallic cross bar fixed in the valve
case or attached to the valve itself, or by means of other apparatus..
When the cross. bar is used for applying the force to close the valve
it does so by coming into contact with a wedge-shaped piece of metal
on the back of the valve itself, or by two wedges in the valve casing just
before the valve arrives at its ultimate position,
SPECIFICATION in pursuance of the conditions of the Letters. Patent,
.
filed by the said George Thorncloe in the Great Seal Patent Office:
on the 2nd July 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE.
THORNELOE, of No. 34, London Wall, in the City of London, Gas
Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirteenth day of January, in the year
of our Lord One thousand eight hundred and seventy, in the thirty-third
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said George Thorneloe, Her special licence that I,
the said George Thorneloe, my executors, administrators, and assigns,.
or such others as I, the said George Thorneloe, my executors, admi-
nistrators, 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 Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for “A NEW FLEXIBLE VALVE FOR
REGULATING THE FLOW OF FLUIDS IN PIPES,, ALSO USED IN APPARATUS FOR THE

page_text: MANUFACTURE OF GAS," upon the condition (amongst others) that I, the
said George Thorneloe, 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 George Thorncloe, do hereby
declare the nature of the said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement :-
This Invention consists of a valve formed by a metallic plate or disc
in the shape of a hollow cone so constructed that a force applied at the
apex becomes equally distributed around the outer edge of its base.
It is made of such a thickness as to be slightly flexible under the
pressure which closes it, in order that its edge shall adapt itself to the
face or seat of the valve and make a tight joint. The edge or face of
the cone is turned to a true surface and may vary in thickness, but it
is found best in practice to make the surfaces in contact about one-
eighth of an inch wide in order that there may be as little chance as.
possible of the lodgment of dirt or grit, which might prevent the faces
of the valve coming into perfect contact. The valve may be moved
to and fro by means of a rack and pinion, a screw or any other method
usually employed for that purpose. The force to close the valve is
applied at its centre, either by means of a metallic cross bar fixed in the
valve case or attached to the valve itself or by means of other apparatus.
When the cross bar is used for applying the force to close the valve it
does so by coming into contact with a wedge-shaped piece of metal on
the back of the valve itself, or by two wedges in the valve casting just
before the valve arrives at its ultimate position. The cross bar is set at
such an angle that when seized by the projection on the back of the
valve its receives the closing force on its edge in the direction of its
greatest strength, and applies such force to hold the valve tight against
the corresponding face or seat.
In order that the foregoing may be more directly understood and
comprehended Drawings are hereto attached, of which the following is a

page_text: Fig. 1 shews a vertical section of a valve constructed on the foregoing
principles adapted for opening and closing by means of a rack and
pinion; Fig. 2 is a sectional plan of the same valve; Fig. 3 is a section
of a valve adapted for opening and closing by means of a screw.
B, Figs. 1, 2, and 3, shews the metallic cross bar placed across the
valve case with the valve V in its position and closed, the point of
contact with the cross bar being at C, at which point the force exerted
presses the valve against its seat at F, F. When the valve is slightly
or fully opened the force is withdrawn, allowing the valve to move,
entirely without friction on its faces.
-
What I consider to be novel and original, and therefore claim
as the Invention secured to me by the herein-before recited Letters
Patent is, .
-
Firstly. The construction and application of flexible metallic valves
as herein described which are closed by a force applied at the centre and
distributed equally around the circumference of the base.
And, secondly. The construction and application of metallic cross
bars for directing the force for closing the valves wherever it may be
required.
In witness whercof, I, the said George Thorneloc; have hercunto
set my hand and seal, this Second day of July One thousand
eight hundred and seventy.
גום זזותמחn
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