IN THE CONSTRUCTION OF TAPS AND VALVES
Year: 1880

page_text: PROVISIONAL SPECIFICATION left by the said John Enos Dudley at the
Office of the Commissioners of Patents on the 18th February 1880.
JOHN ENOS DUDLEY, of Oldham, in the County of Lancaster.
IN THE CONSTRUCTION OF TAPS AND VALVES."
"
"
IMPROVEMENTS
This Invention relates to that class of taps and valves known as
screw-down""
taps and valves, such as are employed for hot water, and for fluids at a high
pressure.
The interior of the body of the tap or valve is made cylindrical, and the plug is
made to fit the same, being fixed or formed at the lower end of the screwed
spindle. The nut through which the screwed spindle works is also made to fit the
interior of the body of the tap or valve, and is provided with two short arms or
projections at the top, fitting into two notches or recesses at the top of the body,
so as to prevent it from turning round.
The lower face of the plug is formed with an annular recess, and the seating,
which is fitted in the lower part of the body, is made with a corresponding annular
projection, the hole through the scating being the same size as the end of the
screwed spindle, which fits therein.
Round the scating is an annular recess in which the outer rim of the plug fits,
and these two annular recesses (one in the plug, and one in the seating) are fitted
with rings of vulcanized india rubber or other suitable substance, so that there is
a double barrier against the escape of any fluid when the tap or valve is screwed
down.
In some cases (especially for steam valves) I dispense with the india rubber rings
or washers, and I form the annular projections on the valve, and on the seating,
so that they both bed or fit truly into their corresponding recesses.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Enos Dudley in the Great Seal Patent Office on the 18th August
1880.
JOHN ENOS DUDLEY, of Oldham, in the County of Lancaster.
IN THE CONSTRUCTION OF TAPS AND VALVES."
"IMPROVEMENTS
"
This Invention relates to that class of taps and valves known as "screw-down
taps and valves, such as are employed for hot water, and for fluids at a high
pressure.
Such being the nature and object of my said Invention, I will now proceed to
describe in detail the manner in which the same is to be or may be performed or
carried into practical effect; and in order that the same may be clearly understood
I have annexed hereunto a Sheet of Drawings illustrative thereof, and have marked
the same with figures and letters of reference corresponding with those in the
following explanation thereof :-
Fig. 1 in the annexed Drawing is a vertical section, and Fig. 2 a horizontal
section of a tap made according to my Invention.
The interior of the body a, a, of the tap or valve is made cylindrical, and the
plug b, b, is made to fit the same, being fixed or formed at the lower end of the
screwed spindle c, c. The nut d, d, through which the screwed spindle c, c, works
is also made to fit the interior of the body a, a, of the tap or valve, and is provided
with two short arms or projections e, e, at the top (see Fig. 2) fitting into two
notches or recesses at the top of the body a, a, so as to prevent it from turning
round.
The lower face of the plug b, b, is formed with an annular recess f, f, and the
scating, which is fitted in the lower part of the body, is made with a corresponding
annular projection g, g, the hole through the seating being the same size as the end
of the screwed spindle c, c, which fits therein. Round the scating is an annular
recess h, h, in which the outer rim of the plug b, b, fits; and these two annular
recesses (one f. in the plug, and one h, h, in the seating) are fitted with rings of
vulcanized india or other suitable substance, so that there is a double barrier
against the escape of any fluid when the tap or valve is screwed down,
In some cases (especially for steam valves) I dispense with the indin rubber rings
or washers, and I form the annular projections on the valve and on the seating
so that they both bed or fit truly into their corresponding recesses.
Fig. 3 is a vertical section of a slight modification of my improved tap. In this
case the nut d, d, is screwed inside the body a, a, of the tap, and the screw cap i, i,
(Fig. 1) and the arms e, e, are dispensed with; Fig. 4 is a similar section showing
the plug screwed down and the tap closed.
Having now described the nature and object of my said Invention, together with
the manner in which the same is to be or may be performed or carried into practical
effect, I wish it to be understood that I claim as iny Invention,―
The manufacture or construction of taps or valves, substantially as hereinbefore
doscribed and illustrated by the Drawings annexed, and more especially I claim the
use of the annular recesses f and h (one in the plug or valve, and the other in the
seating), with their corresponding annular projections fitting one into the other,
as above described.
In witness whereof, I, the said John Enos Dudley, have hereunto set my
hand and seal, this Sixteenth day of August, in the year of our Lord One
thousand eight hundred and eightv