IMPROVEMENTS IN THE CONSTRUCTION OF PLUG TAPS AND VALVES FOR WATER, GAS, STEAM, AND OTHER PURPOSES
Year: 1877

page_text: LETTERS PATENT to Job Milnes, of Milnesbridge, near Huddersfield, in the
County of York, Engine Tenter, for the Invention of "IMPROVEMENTS IN
THE CONSTRUCTION OF PLUG TAPS AND VALVES FOR WATER, GAS, STEAM, AND
OTHER PURPOSES."
Sealed the 21st August 1877, and dated the 27th February 1877.
PROVISIONAL SPECIFICATION left by the said Job Milnes at the Office of
the Commissioners of Patents on the 27th February 1877.
JOB MILNES, of Milnesbridge, near Huddersfield, in the County of York, Engine
Tenter. "IMPROVEMENTS IN THE CONSTRUCTION OF PLUG TAPS AND VALVES FOR
WATER, GAS, STEAM, AND OTHER PURPOSES."
This Invention relates to certain improvements in the construction of plug taps
and valves for water, gas, steam, and other purposes, and consists in making the
body of the tap larger in diameter than is in ordinary use for common taps, and
filling the same with a plug, metal to metal. The openings through the body of the
tap that the connecting pipes are coupled to are not placed opposite to each other,
but are arranged so that the bottom of the orifice or hole on one side of the tap is
above the top of the orifice on the other side of the tap. The orifices or holes in
the plug correspond with the holes through the body, and are formed of such a size
that there is no curtailment or contraction of area through the tap, but that there
is the same area through the tap as in the pipes. When the plug is turned to close
the orifices of the tap the openings in the plug are opposite to the blank parts of
the body which are at different heights; by these means the distance between the
openings at each side of the tap is increased, which decreases the liability of leakage
in consequence of the increased distance the fluid or gas has to travel round the plug
between the orifices.
The second part of my Invention consists of a loose seating for the class of valve
commonly known as the mushroom wheel screw valve which are commonly made
with a seat forming part of the valve body, so that when the same leaks through
the defectiveness of the seating, which is of common occurrence, the valve has to be
detached from its position and be reground or refaced in the lathe, whilst by
Drinn 77

page_text: adopting my improvement a new seating can be replaced at once without removing
the valve, all such seatings being made duplicate so that the same will fit any valve
the same diameter.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Job Milnes in the Great Seal Patent Office on the 24th August
1877.
JOB MILNES, of Milnesbridge, near Huddersfield, in the County of York, Engine
Tenter. "IMPROVEMENTS IN TAPS FOR STEAM AND WATER."
This Invention relates to certain improvements in the construction of plug taps
and valves for water, gas, steam, and other purposes, and consists in making the
body of the tap larger in diameter than is in common use for ordinary taps, and
fitting the same with a plug, metal to metal. The openings through the body of
the tap that the connecting pipes are coupled to are not placed opposite to each
other, but are arranged so that the bottom of the orifice or hole on one side of the
tap is above the top of the orifice on the other side of the tap; the orifices or holes
in the plug correspond with the holes through the body, and are formed of such a
size that there is no curtailment or contraction of area through the tap, but that
there is the same area through the tap as in the pipes. When the plug is turned to
close the orifices of the tap the openings in the plug are opposite to the blank parts
of the body, which are at different heights; by these means the distance between the
openings at each side of the tap is increased, which decreases the liability of leakage
in consequence of the increased distance the fluid or gas has to travel round the
plug between the orifices.
The second part of my Invention consists of a loose seating for the class of valvo
commonly known as the mushroom wheel screw valve, which are commonly made
with a seat forming part of the valve body, so that when the same leaks through
the defectiveness of the seating, which is of common occurrence, the valve has to be
detached from its position and be reground or refaced in the lathe, whilst by
adopting my improvement a new seating can be replaced at once without removing
the valve, all such seatings being made duplicate, so that the same will fit any valvo
the same diameter.
But in order to enable my improvement to be better understood, I will proceed
to describe the same by reference to the accompanying Drawing, in which,-
Figure 1 is a section through the centre of my improved tap.
Figure 2 is also a section through the centre of my improved tap, which is
modified and arranged with a valve between the openings in the plug.
Figure 3 is a section through the body of my improved wheel valve.
Similar letters of reference are used in all the Figures to represent similar parts.
The body parts of the taps and valve are indicated by the letter A, the taps are
fitted with the plugs B which have openings C equal or larger in area to the con-
necting pipes, and correspond with the openings D through the body of the tap.
The plug is made conical to fit the body and is secured therein by means of nut E,
screwed on the end of the plug against the washer F, which is fitted on the plug in
the usual manner. The large end of the plug opening in the body is made up by
the stop plug G which is screwed tight, metal and metal.
In Figure 2 the tap is inverted, and the inside of the plug between the openings
is arranged with a seating and valve H, which acts as a check valve and tap com-
bined;
the valve spindle H¹ is extended to the plug G, and inserted in the hole H2
formed in the said plug, which acts as a stay for the same; by removing the plug G
the check valve H can be taken out and examined whilst the pressure is on one or
both sides of the tap.
In Figure 3 the loose valve scating J is fitted into the valve casing A, and rests
upon the projection K, so that by screwing the stopper L tight down on to the valve

page_text: seat the same will not be disturbed; these seatings being made duplicate can easily
be replaced with new seatings.
Having thus described my said Invention and the manner in which the same is
or may be performed, I have to state that I do not restrict myself to the precise
details herein described and delineated; but that what I believe to be novel and
original, and claim as the Invention secured to me by the herein-before in part
recited Letters Patent is, the arranging of the openings or thoroughfares through
the tap and valve, and the combination of the parts, substantially as herein-before
described and represented in the accompanying Drawing.
In witness whereof, I, the said Job Milnes, have hereto set my hand and
seal, this Twenty-third day of August, in the year of our Lord One thousand
eight hundred and seventy-seven.
Witness,
JOHN WAUGH,
Engineer & Patent Agent,
29, Tyrrel St.,
Bradford.
JOB MILNES. (L.S.)