MEN IN COCKS AND VALVES
Year: 1882

page_text: PROVISIONAL SPECIFICATION left by the said David Reginald Ashton at
the Office of the Commissioners of Patents on the 19th July 1882.
DAVID REGINALD ASHTON, of Clapton in the County of Middlesex
MENTS IN COCKS AND VALVES
31
"IMPROVE..
This Invention relates to diaphragm cocks or valves and is applicable to ball
valves bib valves and others.
Heretofore the inlet and outlet apertures have usually both been situated in the
seat beneath the diaphragm which was imperforate and covered both apertures.
As thus constructed the working of the valve was liable to be impaired by particles
of grit or other solid matter becoming lodged beneath the diaphragm
According to this Invention the inlet and outlet apertures are at opposite sides
of the diaphragm which is itself formed with an aperture by which the liquid
passes through the diaphragm from one side to the other, so that the flow is not
checked to such an extent as in the old form of valve and the deposit of solid
matters beneath the diaphragm is avoided.
The diaphragm is attached to a central spindle and closes against a slightly
raised seat around the inlet aperture,

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said David Reginald Ashton in the Great Seal Patent Office on the
19th January 1883.
DAVID REGINALD ASHTON of Clapton in the County of Middlesex.
MENTS IN COCKS AND VALVES
IMPROVE-
This Invention relates to diaphragm cocks or valves and is applicable to ball
valves, bib valves, and others.
Heretofore the inlet and outlet apertures have usually both been situated in the
seat beneath the diaphragm, which was imperforate and covered both apertures.
As thus constructed the working of the valve was liable to be impaired by particles
of grit or other solid matter lodging beneath the diaphragm.
According to this Invention the inlet and outlet apertures are at opposite sides
of the diaphragm which is itself provide with an aperture for the passage of the
liquid so that the flow is not checked to such an extent as in the old form of valve,
and the deposit of solid matters beneath the diaphragm is avoided. The diaphragm
is attached to a central spindle and closes against a slightly raised seat around the
inlet aperture.
DESCRIPTION OF DRAWINGS.
Figure 1 is a longitudinal central section of a bib valve in the open position.
Figure 2 shows the diaphragm in position on the front half of the valve, and
Figure 3 shows the seat against which the diaphragm closes. Figure 4 is a section
of a ball valve.
A is the diaphragm made of indiarubber fabric and securely clamped around its
edges between the flanges of the two parts B and C of the valve or cock, all as
usual. a is the aperture through the diaphragm. It is preferably opposite the
outlet orifice c and is quite clear of the seat against which the diaphragm closes.
b is the inlet orifice, and b₁ is a slightly raised seat left or formed around said
orifice by turning or otherwise forming a shallow annular groove 62 in the face of
the flange of the part, B, against which seat the diaphragm is tightly pressed to
close the thoroughfare. D is the central spindle to which the diaphragmn is attached
by a screw nut, said spindle sliding in a cylindrical socket E formed on the part C
and being operated in the case of a bib valve by means of a screw cap F loosely
confined between a shoulder d on the spindle D and a screw nut d', said cap
screwing on a thread cut on the exterior of the socket E and working in and out
thereon, as shown in the open and closed positions in full and dotted lines respectively.
The arrows indicate the course of the liquid.
In the case of a ball cock the spindle D has a slot to receive a short lever arm g
on the ball arm G which is pivoted to the valve as shown in Figure 4.
Having described the nature of my Invention and the manner of performing the
same I declare that what I claim as my Invention to be protected by the herein-
before in part recited Letters Patent is :-
A diapliragm valve or cock in which the diaphragm has a through aperture, and
the inlet and outlet orifices are situated at opposite sides of said diaphragın, and the
diaphragm is adapted to close against a seat around one of said orifices substantially
as hereinbefore described and shown in the drawings. .
In witness whereof I the said David Reginald Ashton have hereunto set
my hand and seal, this seventeenth day of January one thousand eight
hundred and eighty-three.
D. R. ASHTON
(L.S