CERTAIN IMPROVEMENTS IN COCKS OR APPARATUS FOR DRAWING OFF LIQUIDS
Year: 1839

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
STOCKER, of Birmingham, in the County of Warwick, Brassfounder, send
greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Letters Patent, under the Great Seal of Great Britain, bearing date at West-
minster, the Thirteenth day of May, in the second year of Her reign, did,
for Herself, Her heirs and successors, give and grant unto me, the said
George Stocker, Her especial licence, full power, sole privilege and authority,
that I, the said George Stocker, my exors, adñors, and assigns, or such others
as I, the said George Stocker, my exors, adñors, 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 COCKS OR APPARATUS FOR DRAWING OFF
LIQUIDS;" in which said Letters Patent is contained a proviso that I, the said
George Stocker, 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 in part recited Letters Patent,
as in and by the same, reference being thereunto had, will more fully and at
large appear.

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
George Stocker, do hereby declare the nature of my said Invention, and
the manner in which the same is to be performed, are fully described and
ascertained in and by the following statement thercof, reference being had to
the Drawings hereunto annexed, and to the figures and letters marked thereon
that is to say :-
DESCRIPTION OF THE DRAWINGS.
b
Figure 1 shews the external form of a cock of my improved construction;
Figure 2 represents a longitudinal section of the same; on one side of the plug
Bat A there is a space or cavity, which being filled with cork or other elastic
material, when turned round by the key F to C presses against that aperture
and effectually prevents leakage. When the plug B is turned, as shewn in the
section, with the part A. away from the opening C, the fluid then escapes into
the opening E and through the mouth or nose D. Figure 3 represents a view
of the plug, the top at a being the keyhole, the flat part b the space for the
reception of an elastic material, and the aperture c is the passage through
which the fluid flows out. Figure 6 represents the cork or flexible material,
having a semicylindrical form, for the purpose of fitting the space 6 in the plug,
Figure 3. Figure 4 represents another arrangement for applying an elastic
material to prevent leakage; part of the plug G being formed of a flexible
substance, having a wire running through it from the upper part of the plug
and rivetted or otherwise secured at x; when this elastic part of the plug
is lowered by means of the screw I, or by any other convenient means, down
to the nose at D, it presses against the opening H and prevents the escape of
fluid; but when raised, as shewn in the Drawing, the liquid flows beneath it
and through the nose a. Figure 5 shews another mode of applying cork or
other flexible material for the prevention of leakage; in the barrel of the cock
at J a space is formed surrounding the hole K; this space is filled with a soft
or elastic body which presses against the plug and prevents the escape of the
fluid, the plug L being hollow from the line m downwards, and an opening
left on one side at a; when this opening is turned to the passage, K. the fluid
escapes through the nose Y.
Having thus explained the nature of my Invention, I would remark that I
lay no claim to the external form of the cock or to the materials of which
cocks for drawing off liquids are made, intending to make them of. . any
convenient form or material; but what I claim is,―
First, the mode or modes as herein-before described of using soft or elastic
materials (such as leather, cork, cloth, india-rubber, &c.) for the more effectual
prevention of leakages.

page_text: Secondly, the shapes or constructions of the plugs, not confining myself as
to their being conical or cylindrical, but having a form or forms as nearly
approximating to the Drawings as may be most convenient for the
herein-before described.
purposes