IMPROVEMENTS IN AND ADDITIONS TO COCKS AND TAPS FOR DRAWING OFF LIQUIDS AND GASES PROM PIPES, CASKS, OR OTHER VESSELS, WHICH IMPROVEMENTS AND ADDITIONS MAY ALSO BE APPLIED TO COCKS AND TAPS FOR FILLING VESSELS
Year: 1868

page_text: PROVISIONAL SPECIFICATION left by William Henry Saint Aubin at
the Office of the Commissioners of Patents, with his Petition, on
the 26th March 1868..
I, WILLIAM HENRY SAINT AUBIN, of Wolverhampton, in the County
of Stafford, Machinist, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN AND ADDITIONS TO COCKS AND TAPS FOR DRAWING OFF
LIQUIDS AND GASES PROM PIPES, CASKS, OR OTHER VESSELS, WHICH IMPROVEMENTS
AND ADDITIONS MAY ALSO BE APPLIED TO COCKS AND TAPS FOR FILLING VESSELS,"
to be as follows:-
My Invention consists of the improvements in and additions to cocks
and taps herein-after described, the object of my Invention being to
facilitate the connection of the cock or tap to or its withdrawal from
the pipe, cask, or vessel from which liquid or gas is required to be
drawn.
My Invention may also be applied to cocks and taps for filling
vessels.
I will describe my Invention as applied to a cock or tap for drawing
off beer or other liquid or gas.. On the pipe of the cock or tap, or that
part which enters the cask or vessel, I make a screw thread, and into

page_text: the hole in the cask or vessel into which the pipe of the cock or tap
is to be inserted I fix a socket having in its interior a concave screw
thread, into which the before-mentioned screw thread on the pipe of the
cock or tap takes. The said socket has a flange on its front end which
bears against the outside of the cask or vessel, and through which screws
may be passed to attach the said socket to the cask or vessel. Or the
said socket may be attached by means of a fly nut inside the cask
screwing on the socket. Inside the said socket is a hollow plug open
at its front end, closed at its back end, and perforated with holes on
its cylindrical sides. This plug has a screw thread which takes into
the concave screw thread in the socket. The front end of the hollow
plug may be square or any other shape, but if cylindrical it has a
projection on its edge which engages with a corresponding notch or
depression on the screwed end of the pipe of the cock or tap, and when
the said pipe is introduced into the socket and turned it not only
itself advances in the socket, but communicating its rotatory motion
to the said hollow plug causes the said plug to advance before it.
Before the pipe of the cock or tap is introduced into the said socket
the said hollow plug is within the socket, and the perforations in its
sides are consequently closed by the said socket, and no liquid or gas
can escape through the said socket from the cask, vessel, or pipe.
When, however, the cock or tap is screwed into the said socket the
said hollow plug advancing before it, the perforations in its sides being
no longer covered by the socket, the liquid or gas can pass through
the said perforations to the tap. On withdrawing the tap the hollow
plug is brought into the hollow socket, and its perforations closed.
The tap may be thus introduced into and withdrawn from the cask,
vessel, or pipe without any loss of liquid or gas, and in the latter case
casks will by this means when emptied be kept sweet. The extreme
or closed end of the plug may have a flange and washer which bear
against the inner end of the socket when the tap is withdrawn and
make a perfectly tight closing, and the cock or tap may also have a
shoulder and washer fitting against the front of the socket and making
the junction perfectly tight. There may also be a washer between the
flange of the socket and cask or vessel.