IMPROVEMENTS IN GAS, WATEE, AND STEAM VALVES.
Year: 1875

page_text: LETTERS PATENT to George Thorneloe, of No. 57, Barbican, in the
City of London, Gas Engineer, for the Invention of "IMPROVEMENTS
IN GAS, WATEE, AND STEAM VALVES.
PROVISIONAL SPECIFICATION left by the said George Thorneloe at
the Office of the Commissioners of Patents, with his Petition, on
the 24th November 1875.
I, GEORGE THORNELOE, of No. 57, Barbican, in the City of London,
Gas Engineer, do hereby declare the nature of the said Invention of
"IMPROVEMENTS IN GAS, WATER, AND STEAM VALVES," to be as follows:-
-
This Invention consists of a self-cleansing valve consisting of a
metallic plate or disc in the shape of a hollow cone so constructed that
force applied at the apex becomes equally distributed around the outer
edge of its base. It is made of suitable thickness, and the edge or
surface of the cone is turned to a true surface, and may vary in thick-
ness, but it is found best in practice to make the surface about one-
eighth of an inch wide or round, in order that the cleaning brush made

page_text: of suitable material, such as wire, hair, or otherwise, and so arranged on
side of valve that it cleans off all dirt, grit, and deposited matter on the
door or disc every time the door or disc is opened; the valve seat to be
turned perfectly true, flat, bevelled, or otherwise.
The cleaning brush I make of suitable material, as the aforesaid
named, and so arranged under doors or disc to clean off every particle of
dirt, grit, and deposited matter from the surface of the valve seating
every time the valve is opened, and thus ensuring a perfectly tight and
always clean valve. The valve may be moved to and fro by means of a
rack and pinion screw, or any other method usually employed for that
purpose.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said George Thorneloe in the Great Seal Patent Office
on the 24th May 1876.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
THORNELOE, of No. 57, Barbican, in the City of London, Gas Engineer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-fourth day of November, in
the year of our Lord One thousand eight hundred and seventy-five,
in the thirty-ninth 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, administrators, 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 "IMPROVEMENTS IN GAS, WATER, AND STEAM VALVES," 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

page_text: same was to be performed, and cause the same to be fed in the Great
Seal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
'
do hereby
NOW KNOW YE, that the said
declare the nature of said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained
in and by the following statement, reference being had to the accom-
panying Sheet of Drawings, and to the letters and figures marked
thereon (that is to say) :-
My Invention relates to improvements in gas, water, and steam
valves, and consists of a self-cleansing valve of a metallic plate or disc
in the shape of a hollow cone so constructed that force applied at the
apex becomes equally distributed around the outer edge of its base. It
is made of suitable thickness, and the edge or surface of the cone is
turned to a true surface, and may vary in thickness, but it is found best
in practice to make the surface round or about one-eighth of an inch
wide, in order that the cleansing brush or brushes made of any suitable
material, such as wire, hair, or otherwise, and so arranged on the side of
the valve that it cleans off all dirt, grit, and deposited matter on the
door or disc every time the door or disc is opened or closed; the valve
seat to be turned perfectly true, flat, bevilled, or otherwise.
.
The cleaning brush or brushes I make of any suitable material, as
aforesaid, and so arranged under the door or disc to clean off every
particle of dirt, grit, or deposited matter from the surface of the valve
seating every time the valve is opened or closed, thus ensuring a per-
fectly tight and always clean valve. The valve may be moved to and
fro by means of a rack and pinioned screw, or any other method usually
emploved for this purpose.
Fig. speciany designed for use of purmers so constructed that
when closed the top flange A can be removed for inspection or other-
wise, and the inside of the valve cleansed from any impurities that may
be within, and the flange A replaced without any inconvenience or loss
of gas. The door or disc B in rising passes upwards against the side
brush or brushes C fixed on the side of the valve in any convenient
manner, and again on being closed, thus clearing away all dirt, grit, or

page_text: other impurity from the edge of the door or disc, the brush or brushes D
being raised or lowered by means of an internal screw or otherwise,
supported by a cross bar F, thus clearing the valve seating E each time
the door or disc is raised or lowered.
Fig. 2 consists of a similar arrangement of brushes as in Fig. 1, the
door or disc being raised by means of an outside screw or any other
convenient means.
My Invention can be applied to any design or shape valve, either for
steam, gas, or water.
Having now described the nature of my Invention what I consider to
be novel and original and therefore claim as new is, the construction of
self-cleansing valves and brushes raised by means of a screw, as set
forth and described in the foregoing Specification and Drawings.
In witness whereof, I, the said George Thorneloe, have hereunto
set my hand and seal, this Twenty-fourth day of May, One
thousand eight hundred and seventy-six.