IMPROVEMENTS IN COCKS AND TAPS
Year: 1878

page_text: LETTERS PATENT to William Henry Bailey, of Salford, in the County of
Lancaster, Engineer, for the Invention of IMPROVEMENTS IN COCKS AND
TAPS."
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Sealed the 1st October 1878, and dated the 12th April 1878.
PROVISIONAL SPECIFICATION left by the said William Henry Bailey at the
Office of the Commissioners of Patents on the 12th April 1878.
WILLIAM HENRY BAILEY, of Salford, in the County of Lancaster, Engineer.
"IMPROVEMENTS IN COCKS AND TAPS."
My Invention consists of improvements in the construction of cocks and taps,
whereby I am enabled to repair the working parts of the same without ever
removing the body of the cock from the piping into which it has once been fixed,
and thus without breaking the joints.
I accomplish this object by inserting in and attaching to the body of the cock or
tap a sleeve or lining, or casing, having an opening or passage corresponding to the
bore of the pipe. Into this casing I insert the usual plug, which, by preference, I
hollow out, so that the passing fluid moves downward into a cavity in the casing
provided for that purpose, and thence flows onward into the continuation of the
piping. When the lining, sleeve, or casing is worn out it may be lifted out of the
body of the cock or tap and replaced by a new one, which, being mannfactured on
the interchangeable principle, is a duplicate of the worn one, and which may be
kept ready for the occasion or procured from the factory when wanted. Thus cocks
and taps become more durable, the chamber round the barrel keeping it at an equal
temperature, and thus equalizing the wear and tear. They are also more easily,
[Price 6d1

page_text: expeditiously, and cheaply repaired, the pipe line being never broken and the joints
not disturbed.
These cocks and taps are applicable to steam, water, and all other purposes for
which cocks and taps are usually employed.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Henry Bailey in the Great Seal Patent Office on the 12th
October 1878.
WILLIAM HENRY BAILEY, of Salford, in the County of Lancaster, Engineer.
"IMPROVEMENTS IN COCKS AND TAPS."
My Invention consists of improvements in the construction of cocks and taps,
whereby I am enabled to repair the working parts of the same without ever
removing the body of the cock from the piping into which it has once been fixed,
and thus without breaking the joints.
I accomplish this object by inserting in and attaching to the body of the cock or
tap a sleeve or lining, or casing, having an opening or passage corresponding to the
bore of the pipe. Into this casing I insert the usual plug, which, by preference, I
hollow out, so that the passing fluid moves downward into a cavity in the casing
provided for that purpose, and thence flows onward into the continuation of the
piping. When the lining, sleeve, or casing is worn out it may be lifted out of the
body of the cock or tap and replaced by a new one, which, being manufactured on
the interchangeable principle, is a duplicate of the worn one, and which may be
kept ready for the occasion or procured from the factory when wanted.
In order to equalize the temperature of the lining and the plug I form an annular
space between the lining and the body of the cock, which space will be filled with
the passing fluid. In the ordinary cock the fluid has access to the plug only, and
raises it to a high temperature, while the body of the cock, being exposed to the
atmosphere, remains at a much lower temperature, and the result is an increased
pressure on the circumference of the plug, and consequently causing unnecessary
wear and tear. By equalizing the temperature of plug and cock I avoid these
drawbacks and diminish the power which is necessary to turn the plug.
The body of the cock may be made of the same inaterial as the plug and lining,
but for large cocks I prefer to make the body of cast iron, while the plug and lining
are of brass.

page_text: Having now described the nature of my Invention, and the manner in which it
may be used, I declare that my Invention is not limited to the exact shape and
dimensions, nor to the type shown in the Drawings, but that it may be applied to
various types of cocks; what I claim is substantially as set forth,-
1. Inserting into the body of a tap or cock a lining or casing of brass or other
suitable material, in which the plug turns, and which may be removed and replaced
by another casing without disconnecting the body of the cock from the tubes.
2. Hollowing out the surface of the lining or the adjoining surface of the body
in such a manner as to form a cavity that will admit the fluid with which the main
pipe is filled, and thus equalize the temperature of plug and lining.
This Eighth day of October, One thousand eight hundred & seventy-eight.
Witness,
A. HILDEBRANDT,
55, Cross Str.,
Manchester,
Patent Agent.