moined Throttle and Stop ve.
Year: 1896

page_text: >
Date of Application, 12th Aug., 1896
moined Throttle and Stop
ve.
1 HENRY HYDE of Alger Street, Hurst, Ashton-under-Lyne in the County of
Lancaster, Brass Founder, do hereby declare the nature of this invention to be as
follows:-
This invention relates to the construction of a combined throttle and stop valve
to be used for steam, water, or other fluids.
The improved valve is made essentially of two principal parts one of which (the
stop valve) is fixed to the end of the valve stem or rod, and the other (the throttle
valve) is mounted therein and is capable of turning and also of a slight advancing
and receding motion.
The body of the stop valve is made in a box-like form with a socket on the back
by means of which it is fixed on the valve stem or rod. It may be provided on
the face with an internal flange made in a conical form so as to present a
more or less sharp edge to the valve seating, or the edge may be made without a
flange.
The throttle valve is made in a disc form and may be provided with an external
flange to fit inside the internal flange of the stop valve above mentioned so that
when in place it can turn round inside the throttle valve (or rice versa) its working
face projecting slightly beyond the sharp edge of the stop valve. Inside the latter
is a pin on which is fitted a coiled wire spring which bears against the back of the
throttle valve keeping the flanges of the two valves in contact, the face of the
throttle valve projecting as above named or when the flanges are dispensed with
the pin projects through the throttle valve and is provided with a head to keep the
valve from falling out.
The valve seating is made with a flat surface opposite to the flat surface of the
throttle valve, and just outside the latter it has an annular recess which is filled in
either with soft metal, india rubber, or other yielding material against which
the more or less sharp edge of the stop valve presses when fully screwed
down.
In working this combined valve, as the valve stem or rod is screwed down the
flat face of the disc shaped throttle valve first comes against the flat portion of
the facing and acts as a throttle valve. As the valve is screwed down further the
throttle valve recedes into the hollow portion of the stop valve compressing
the coiled spring and allowing the more or less sharp edge all round the latter
to be pressed tightly on to the soft metal or other yielding material in the annular
recess of the seating, and thus make a perfectly close joint.
Dated this 11th day of August 1896
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.

page_text: I HENRY HYDE, of Alger Street, Hurst, Ashton-under-Lyne in the County of
Lancaster, Brass Founder, do hereby declare the nature of this invention and in
what manner the same is to be performed to be particularly described and
ascertained in and by the following statement :-
This invention relates to the construction of a combined throttle and stop valve
to be used for steam, water, or other fluids, and the same will be readily
understood from the following description on reference to the accompanying
drawings, of which
Fig. 1 is an elevation partly in section of a combined throttle and stop valve
made according to my invention.
Fig. 2 is a detached view of the valve proper and seating.
Fig. 3 is a detached view shewing a modification hereafter referred to.
a is the body or casing of the valve; a 1 is the seating 6 is the rod or stem of
the valve turned by the hand wheel 1 and made with a screw thread 62.
The improved valve is made essentially of two principal parts one of which (the
stop valve) c is fixed to the end of the valve stem or rod b as seen at Figs. 1 and 2,
and the other (the throttle valve) part d is mounted therein and is capable of
turning and also of a slight advancing and receding motion.
The body of the stop valve c is made in a box-like form with a socket ex on the
back by means of which it is fixed on the valve stem or rod b. It may be provided
on the face with an internal flange made in a conical form so as to present a more
or less sharp edge at c** see Fig. 3 to the valve seating a 1 (Fig. 1), or the edge c**
may be made without a flange, see Figs. 1 and 2.
The throttle valve d is made in a disc form and may be provided with an external
flange d1 (Fig. 3) to fit inside the internal flange of the stop valve c above
mentioned so that when in place it can turn round inside the said stop valve d (or
vice versa) its working face d 1 projecting slightly beyond the sharp edge c** of the
stop valve c.
Inside the latter is a pin c I on which is fitted a coiled wire spring e
which bears against the back of the throttle valve d keeping the flanges of the two
valves in contact (see Fig. 3), the face of the throttle valve projecting as above
named, or when the flanges are dispensed with the pin el projects through the
throttle valve d and is provided with a head c2 to keep the valve d from
falling out.
The valve seating a 1 is made with a flat surface opposite to the flat surface d¹ of
the throttle valve d, and just outside the latter it has or may have an annular
recess shewn dotted at a 2 Fig. 1 which is filled in either with soft metal, india
rubber, or other yielding material against which the more or less sharp edge c** of
the stop valve c presses when fully screwed down.
In working this combined valve, as the valve stem or rod a is screwed down the
flat face of the disc shaped throttle valve d first comes against the flat portion of
the facing a 1 and acts as a throttle valve see Fig. 2. As the valve is screwed
down further the throttle valve d recedes into the hollow portion of the stop valve c
compressing the coiled spring e and allowing the more or less sharp edge c** all
round the latter to be pressed tightly on to the soft metal or other yielding material
in the annular recess of the seating if such material is found necessary, and thus
make a perfectly close joint.
Openings are made in the face of the throttle valve d as seen on Figs. 1 and 3,
and thus the throttle valve is an equilibrium valve, and further, as the said valve
extends below the stop c when open its face protects the stop valve and prevents it
from being withdrawn by the action of the steam when throttling the valve.

page_text: I do not wish to confine myself to the exact details of construction described
above and illustrated by the annexed drawings as the valve and seating may vary
in form.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
A combined throttle and stop valve mounted on and actuated by one and the
same valve rod or spindle and moving to or from a suitable seating or facing,
substantially as herein before described.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.