AN IMPROVED COCK OR TAP
Year: 1853

page_text: LETTERS PATENT to James Burden, of Stirling, in the County of
Stirling, Scotland, Brewer, for the Invention of "AN IMPROVED
COCK OR TAP."
Sealed the 6th October 1858, and dated the 10th August 1853.
PROVISIONAL SPECIFICATION left by the said James Burden at
the Office of the Commissioners of Patents, with his Petition,
on the 10th August 1853.
Sp
I, JAMES BURDEN, of Stirling, in the County of Stirling, Scotland, Pr
Brewer, do hereby declare the nature of the said Invention for
"AN IMPROVED COCK OR TAP" to be as follows:-
My Invention relates, in the first place, to cocks or taps for the
passage of fluids at a high pressure, and consists in forming or con-
structing them with the orifice or entrance passage placed so far
below the exit passage as to allow of a sufficient quantity of packing
being inserted between them.
The packing extends from the upper part of the entrance passage to
the bottom of the cover of the barrel, and is prevented from turning
with the plug by its being pressed into grooves cut down the barrel for
the purpose. The packing may be composed of leather or other suitable
substance. And my Invention relates, in the second place, to cocks or

page_text: taps for the passage of fluids at a low or common pressure, and consists
in adapting and applying thereto the same kind of packing as that
above referred to between the plug and the barrel, the entrance passage
being, as usual, in a line with the exit.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said James -Burden in the Great Seal Patent Office,
on the 10th February 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
JAMES BURDEN, of Stirling, in the County of Stirling, Scotland, Brewer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, hearing date the Tenth day of August, in the. year of
our Lord One thousand eight hundred and fifty-three, in the seven-
teenth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Janies Burden, Her special license that
I, the said James Burden, my exccutors, administrators, and assigns, or
such others as I, the said James Burden, 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, au Invention for "AN IMPROVED COCK OR TAP," upon the con-
dition (amongst others) that I, the said James Burden, by an instru-
ment 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 performed, and cause the same to be filed in the
Great Seal Patent Office within six calendar months next and imme-
diately after the date of the said Letters Patent..
NOW KNOW YE, that I, the said James Burden, do hereby declare
the nature of my 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 Drawing hereunto
annexed, and to the letters and figures markod thereon (that is to say):

page_text: My Invention of "An Improved Cock or Tap" is applicable to the S
various purposes for which, it is usual to employ cocks or taps, and
consists, in reference to such as are used for regulating the passage of
fluids or gases at a high pressure, in constructing the cock or tap in
such a manner that the orifice or entrance passage into the barrel may,
be placed so far below the exit passage therefrom as to admit of a
sufficient quantity of packing being inserted between them, such
packing being made to extend from the upper part of the said entrance
passage to the bottom of the barrel cover. And my Invention consists,
in reference to cocks or taps for passing fluids or gases at a low pres-
sure, in adapting and applying thereto a packing similar to that used
for high pressure purposes. In both cases the packing may be con-
posed of leather or other suitable material, and is prevented from
turning with the plug by its being pressed into grooves cut down the
barrel for the purpose.
In order, however, that my Invention may be fully understood I
will proceed to describe the accompanying Drawing, in which are
represented a cock or tap for high pressure purposes, and another
for low pressure. Fig. 1, is an elevation, and Fig. 2, a section of a
high pressure cock; Figs 3, and 4, are similar views of a low pressure
cock. In these several Figures the same letters of reference indicate
corresponding parts. «, is the ordinary pipe or neck through which
the fluid or gas enters the cock; b, is the orifice communicating with
the opening or way in the plug c, the exit passage d, of which, it will
be seen on reference to Fig. 2, is considerably above the orifice b.
The packing is shewn at e, as extending from the upper part of the
orifice b, to the bottom of the barrel cover f.
On reference to Fig. 4, it will be seen that the only difference
between that and Fig. 2, consists herein (viz.), that whereas in
Fig. 2, the entrance passage is considerably below the exit, in Fig. 4,
they are in a line one with the other. In both the packing shewn at e,
is constructed on the same principle, and is pressed by the plug c, into
vertical grooves cut in the barrel g.
Having thus described the nature of my Invention, and in what
manner the same is to be performed, I would have it understood that

page_text: I do not mean.or intend to confine myself to the precise forms of the
parts shewn and described; but what I claim as of my Invention is,
in reference to cocks or taps for high pressure purposes, the construc-
tion of the same with the orifice or entrance passage so far below the
exit passage as to admit of a sufficient quantity of packing being
inserted between them, as described. And, in reference to cocks or taps
for low pressure purposes, I claim the adaptation and application
thereto of the packing, as described.
In witness, whereof, I, the said James Burden, have hercunto set
my hand and seal, this Twenty-sixth day of January, in the
vear of our Lord One thousand eight hundred and fifty-four.
EDWIN PEDDLE,
Witness.
JAMES BURDEN. (L.S.)