IMPROVEMENTS IN TAPS
Year: 1882

page_text: PROVISIONAL SPECIFICATION left by the said William Hunt at the Office
of the Commissioners of Patents on the 25th July 1882.
WILLIAM HUNT, of Scarborough in the County of York "IMPROVEMENTS IN
TAPS
"
These improvements relate to taps of the ordinary screw-down, high pressure
class suitable for water mains and the like The spindle terminates in a valve
preferably of rubber which beds upon an ordinary seat when screwed down, but
has also a rubber face which beds upon another seat above it when unscrewed. The
upper portion of the body of the tap is tapered and bored out inside and into this
fits a conical plug turned to the same taper and which forms the nut in which the
spindle works; the inner end of this plug forms the seating against which the
upper face of the valve beds.
The usual stuffing box and cap are employed and upon the side of the body
is a small branch, the aperture of which passes through the wall of the body and
opens into the tapered portion inside; a suitable passage way is provided in the
plug so as to form a connection between the outlet end of the pipe and the small
side branch
By this arrangement when the tap is open for the passage of water, the opening
to the side branch is closed by reason of the valve being screwed up against the
inner end of the plug; but when the tap is closed and the pressure in the main shut
off the passage to the side branch is open and the water in the pipe beyond can
pass out and leave the pipes empty. This is a great advantage in frosty weather
and saves burst pipes. Another advantage is, that in case of an accident or alteration
the usual piercing of the pipe or sucking the water out of the pipe is avoided

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Hunt in the Great Seal Patent Office on the 25th January
1883.
WILLIAM HUNT of Scarborough in the County of York.
TAPS
"
"IMPROVEMENT IN
These improvements relate to taps of the ordinary screw down, high pressure
class suitable for water mains and the like. The spindle terminates in a valve
preferably rubber covered which beds upon an ordinary seat when screwed down
but has also a rubber face which beds upon another seat above it when unscrewed.
The upper portion of the body of the tap is tapered and bored out inside and into
this fits a conical plug turned to the same taper which forms the nut in which the
spindle works the inner end of this plug forms the seating against which the upper
face of the valve beds
The usual stuffing box and cap are employed and upon the side of the body is a
small branch and the aperture of which passes through the wall of the body and
opens into the tapered portion inside, a suitable passage way is provided in the plug
so as to form a connection between the outlet end of the pipe and the small side
branch.
By this arrangement when the tap is open for the passage of water the opening
to the side branch is closed by reason of the valve being screwed up against the
inner end of the plug; but when the tap is closed and the pressure in the main
shut off the passage to the side branch is open and the water in the pipe beyond
can pass out and leave the pipes empty. This is a great advantage in frosty
weather and saves burst pipes. Another advantage is, that in case of an accident
or alteration the usual piercing of the pipe or sucking the water out of the pipe is
avoided
In the accompanying drawings Fig 1 is an elevation of the body of the tap with
the side branch and Fig 2 a plan of the same. Fig 3 is a vertical cross section of
the complete tap and Fig 4 a vertical longitudinal section of the same.
A is the body of the tap B the plug, C the spindle D the valve, E the side
branch and F the passage in the plug G is the division in the tap body which
forms the seating for the valve.
As shown in Fig 3 the valve is screwed down so that the through way in the
main or pipe is closed against the pressure, but the side or relief passage F is open
to the discharge side of the tap so that any water which is in the pipe beyond can
run back and escape by it-In Fig 4 the main passage through the tap is open and
the side passage F closed by reason of the valve D being screwed up against it.
Having now described my invention and the method of performing the same
I wish it to be understood that what I claim and desire to protect under the
herein before in part recited Letters Patent is:
First The double-purpose valve D which closes the passage through the tap and
opens the relief passage when screwed one way, and closes the relief passage
and opens the
passage through the tap when screwed the other way
substantially as set forth and shown.
Second-The combination of the double purpose valve D, perforated plug B,
passage F and side branch E substantially as and for the purposes set forth
and shown

page_text: Third-The combination of the perforated plug B with the perforated body A
substantially as and for the purposes set forth and shown
In witness whereof I the said William Hunt have hereunto set my hand
and seal this 22nd day of January in the year of Our Lord One thousand
eight hundred and eighty three.
WILLIAM HUNT (LS.)