IMPROVEMENTS IN VALVES
Year: 1884

page_text: I, JAMES HARGREAVES, of Widnes, in the County of Lancaster, Chemical
Engineer do hereby declare the nature of my said Invention for IMPROVEMENTS
IN VALVES to be as follows:-
This Invention relates to lift or like valves which are moved to and from their
seats by fluid action as in pumps and similar apparatus. The object is to provide
a valve in which the shocks and pressure shall be taken by metal or hard resisting
substance and the sealing or prevention of the passage of fluid be effected by india
rubber or comparatively soft and flexible material.
My Invention consists essentially in combining a metallic valve or valve of
hard substance capable of seating so as to close or nearly close the fluid passage
or way with an india rubber valve or valve of comparatively soft and flexible
material capable of seating and closing any orifice left unclosed by the metallic or
like valve so as to effectually prevent leakage and relieve the parts essential to the
efficient closing of the passage or way free from great pressure and any liability to
undue wear and tear.
A convenient construction of valve under my Invention consists of a flat circular
metallic disc slightly smaller in diameter than the orifice to be closed provided
with a guide spindle and adapted to seat on arms or ribs so as to leave when
seated a small annular passage for fluid; and an india rubber disc valve of larger
diameter than the metallic disc valve held in contact with the back thereof by
means of a binding plate and adapted to close on a bevelled seating surrounding
the said metallic disc valve.
The said valves may be either lifting or flap or hinge valves.

page_text: I JAMES HARGREAVES of Widnes in the County of Lancaster, Chemical
Engineer, do hereby declare the nature of my Invention for IMPROVEMENTS IN
VALVES" 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 lift or like valves which are moved to and from their
seats by fluid action as in pumps and similar apparatus. The object is to provide
a valve in which the shocks and pressure shall be taken by metal or hard resisting
substance and the sealing or prevention of the passage of fluid be effected by india
rubber or comparatively soft and flexible material.
My Invention consists essentially in combining a metallic valve or valve of
hard rigid substance capable of sealing so as to close or nearly close the fluid
passage or way, with an india rubber valve or valve of comparatively soft and
flexible material capable of sealing and closing any orifice left unclosed by the
metallic or like valve so as to effectually prevent leakage. The parts essential to
the efficient closing of the passage or way are thereby relieved to a great extent
from pressure and liability to undue wear and tear.
A convenient construction of duplex valve under my Invention is shown in
Figs. 1 and 2 where Fig. 1 is a plan and Fig. 2 a sectional view at the line A A.
a metallic or rigid disc valve secured to the spindle b and slightly smaller in
diameter than the orifice c to be closed. d arms or ribs on which said rigid
valve a seats. e india rubber or comparatively soft and flexible disc valve of
larger diameter than the metallic disc valve a and held in contact therewith by
the binding plate f, g securing nut, rivets through the plates may be used in place
of the said nut. The valve e closes on the bevelled seat h. It will be seen that
the valve a will bear the greater part of the strain and that the valve e will
effectually prevent the passage of fluid when seated past the seat h.
Fig 3 is a sectional view of a clack or hinged valve. a metallic valve, d cross
ribs on which the valve seats, e flexible valve secured to a by the binding plate f
and rivets g. h bevelled seat b hinge.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed I declare that what
I claim is
First. The combination of metallic or rigid and india-rubber or flexible valve
seating and acting substantially in the manner and for the purpose setforth.
Second. The combination of the parts a and e rigid valve spindle b, binding
plate and nut or rivets g substantially in the manner setforth.
Third. The combination of the parts a. e. bf and g with the arms or ribs d and
bevelled seat h substantially in the manner setforth.
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