AN IM- PROVED COCK FOR FLUIDS
Year: 1830

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME I, JOHN
WALKER, of Weymouth Street, Portland Place, in the County of Middlesex,
Esquire, send greeting.
WHEREAS His most Excellent Majesty King George.the Fourth, by
His Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Fourth day of May, in the eleventh year of His reign, did,
for Himself; His heirs and successors, give and grant unto me, the said John
Walker, His especial license;! that I, the" said John Walker, my executors,.ad-
ministrators, and assigns, or such others as I 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, and also in all
His Majesty's Colonies and Plantations abroad, my. Invention of "AN IM-
PROVED COCK FOR FLUIDS;" in which said Letters Patent there is contained a
proviso, obliging me the said John Walker, by an instrument, in writing
under my hand and seal, particularly to describe and ascertain the nature of
my said Invention; and in what manner the same is to be performed, and,
to cause the same to be inrolled in His Majesty's High Court of Chancery
within two calendar months' next and immediately after the date of the said
recited Letters Patent, as in and by the same, reference being thereunto had,
will more fully and at large appear..
NOW KNOW YE, that in compliance with the said proviso, I, .the said
John Walker, do hereby declare that the nature of my said Invention, and
the manner in which the same is to be performed, are described and ascer
tained by the Drawing hereunto annexed, and the following description thereof
(that is to say):

page_text: My said Invention of an improved cock for the conveyance of fluids consists
in making the plugs and sockets of the cocks cylindrical. The sockets are to
be bored with proper tools; and the plugs to be turned in a lathe or otherwise
formed as nearly the size of the socket as possible, so as to approach as near
to a cylinder in the execution as the most improved mechanism will admit of.
The plugs are then to be ground water and air-tight into the sockets. The
plug is to be kept in its place either by a screw with or without a washer
at each end, or as the case may require, by a shoulder at one end and a screw
with or without a washer at the other, and in some cases with a small pin put
through the screw to keep'in its place. For some purposes I cut the socket
through on one side with a saw in a convenient place, the slit made by the saw
being as nearly parallel as possible to the length of the cylindrical plug. In
such cases a boss or enlargement is left on the external part of the socket
through which this saw-slit is cut, and which, when so slit, forms two parts
with holes to receive a screw, by means of which the socket may be tightened
upon the plug in case of wear; and I use, in some cases, either two circular
rings with screws in the inside to correspond with similar screws cut upon the
socket, which, in that case, "must be on the exterior a little tapered, or, in
other cases parts of the socket being a little tapered, I use hoops of metal
tapered in their insides, which, being gently driven up, will tighten the socket
upon-the-plug, or straight.screws for the same purpose.
All this relates to. brass and other metallic cocks, their forms being varied
for the purposes they are required for.
Having thus described the nature of my said Invention, I shall proceed to
explain the several figures contained in the Drawing, which, as aforesaid, is
annexed to this Specification:-.
Figure 1 is a section through the middle of the plug of a cock; and
Figure 2, another section through the passage and socket of the cock; A, A,
in Figure 1, the cylindrical part of the plug, and B, B, in Figure 2, the
cylindrical hole corresponding therewith, formed in the socket to receive it; C,
in Figures 1 and 2, the passages for the fluids to pass-through; D, the plug-
handle; E, a washer; F, a screwed ring fitted upon a screw formed. upon
one end of the plug A, A, in order to keep the plug in its place, a shoulder G
being made at the other end of the plug, which rests upon the flat end H of
the socket, Figure 2. Figure 3 is a section through the socket of a cock,
and Figure 4, a cross section thereof; in which I; Figure 3, shows one of the
two bosses; and I, I, in Figure 4, the two bosses, formed by slitting a boss
or.enlargement provided upon the exterior of the socket of the cock for that
purpose; J, in Figure 3, a hole made through the two bosses I, I, for a
"
**

page_text: screw K to enter and bind the bosses, so as, in case of wear, to fit the plug
more accurately, one of the holes being screwed to fit the screw K. This
screw has a shoulder L formed upon it to act against one of the bosses, and to
draw the two towards each other upon screwing it; Figure 5, another section
of the socket of a cock, which has been slit through by a saw upon one side
of it, as in the socket last referred to; but instead of having bosses formed
upon it, it has two tapering screws M, M, formed on or near to its ends, upon
each of which a screwed ring N, N, is fitted, and by screwing which said
rings the socket may be accurately adjusted to the plug in case of wear.
Figure 6 is a section of another socket of a cock, which has likewise been
slit through like those before described, and has a tapering part formed upon
its exterior near its ends, as shewn at O, O. Upon these tapered parts the
rings with taper holes in them P, P, are fitted, and which, upon being gently
driven, will close the socket upon the plug as required to make it fit accurately
after wear.
I do not mean or intend hereby to claim as my Invention any of the various
parts herein shown and described, which may already be known or in use;
but I do hereby claim as my Invention the formation of cocks for the
conveyance of fluids, with cylindrical plugs fitted to cylindrical holes formed
in the sockets to receive them. And also the slitting of the sockets, and the
different methods of causing them to be adjusted to fit the plugs herein
described.
my
hand
In witness whereof, I, the said John Walker, have hereunto set
and seal, the Third day of July, in the year of our Lord One thousand
eight hundred and thirty.