AN IMPROVED VALVE COCK
Year: 1856

page_text: LETTERS PATENT to William Webster, of 22, Bunhill Row, in the
County of Middlesex, for the Invention of "AN IMPROVED VALVE COCK."
-A communication from Abner Van Horn, of New York.
PROVISIONAL SPECIFICATION left by the said William Webster at the
Office of the Commissioners of Patents, with his Petition, on the 9th
August 1856.
I, WILLIAM WEBSTER, of 22, Bunhill Row, in the County of Middlesex, do
hereby declare the nature of the said Invention for "AN IMPROVED VALVE
Cock" (a communication) to be as follows, and consists in having a screw
thread cut upon the inner or lower end of the valve stem, and a corresponding
screw thread cut within the hollow and fixed screw nut (and vice versa), sọ
that by turning the hand wheel it will cause the valve to be raised and lowered
with more accuracy.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Webster in the Great Seal Patent Office on the
16th December 1856.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
WEBSTER, of 22, Bunhill Row, in the County of Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Ninth day of August, in the year of our Lord

page_text: One thousand eight hundred and fifty-six, in the twentieth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
William Webster, Her special license that I, the said William Webster, my
executors, administrators, and assigns, or such others as I, the said William
Webster, my executors, administrators, or 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 "AN IMPROVED VALVE
Сocк," a communication fron Abner Van Horn, of New York, upon the
condition (amongst others) that I, the said William Webster, by an instrument
in writing under my hand and seal, should particularly describe and ascertain
the nature of the said Invention, and in what manner the same was to be per-
formed, 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 William Webster, do hereby declare the
nature of the said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement, reference being had to the accompanying Drawings and to the
letters and figures marked thereon, that is to say :-
.
The said Invention relates to an improved mode of working the valves of
valve cocks, and consists in having a screw thread cut upon the lower end of
the valve stem, such screw working through a fixed nut on the under side of
the cock; or in having a hole with a screw thread formed in it, made inside
the valve stem in the direction of its axis, in which works a screw spindle
fixed to or made in one piece with the fixed nut herein-before referred to, the
valve being opened or closed by turning the valve stem or spindle by any of
the usual contrivances.
And in order that the said Invention may be fully understood, I shall now
proceed more particularly to describe the same, and for that purpose I shall
refer to the Figures on the Sheet of Drawings hereunto annexed, the same
letters of reference indicating corresponding parts in both Figures.
Figure 1 of the Drawings represents an external elevation of the cock,
and Figure 2 a sectional view. of the same, taken along the centre line of the
cock.
A is the body of the cock, having an internal division B cast inside it, which
is fitted with a disc valve C in one piece with or fixed on to the valve, spindle,
or stem D. The upper part of this stem passes through the stuffing box E,

page_text: screwed into the body of the cock, and carries any of the ordinary apparatus,
for instance, a hand wheel F, for the purpose of opening or closing the valve
as described hereafter. The lower end of the stem has a screw thread formed
upon it, which screwed portion works through the hollow screwed portion
of the fixed nut G, screwed into the under side of the body of the
cock.
By simply turning the hand wheel in one direction or the other, the valve
will be opened or closed according as the screwed portion of the stem is caused
to move out of or into the nut G.
Having now described and particularly ascertained the nature of the said
Invention, and the manner in which the same is or may be used or carried into
effect, I would observe, in conclusion, that I do not confine or restrict myself to
the precise details or arrangements which I have had occasion to describe or
refer to, as many variatians may be made therefrom without deviating from the
principles or main features of the said Invention; but what I consider to be
novel and original, and therefore claim as the Invention secured to me by the
herein-before in part recited Letters Patent, is,―
The system or mode of actuating the valves of valve cocks, by means of a
screw thread formed on the lower end of the valve stem or spindle, working
into a fixed nut on the under side of the cock, or by having a screwed stem
attached to the fixed nut, such screwed stem working in a tapped hole in the
bottom of the valve stem, as herein-before described.
In witness whereof, I, the said William Webster, have hereunto set my
hand and seal, the Seventh day of November, One thousand eight
hundred and fifty-six.
WILLIAM WEBSTER. (L.S.)