IMPROVEMENTS IN VALVES
Year: 1884

page_text: I, JOSEPH DAY, of Bath, in the County of Somerset, Engineer do hereby declare
the nature of my invention for "IMPROVEMENTS IN VALVES" to be as follows:-
My present invention relates to suspended or flap valves used for controlling the
flow of fluids in pipes.
I arrange a case or chest containing the valve, so that it occupies the desired
position in the line of the pipes the flow of liquid through which is to be controlled
or regulated, and I make openings in the case opposite to the ends of both the inlet
and the outlet pipes, and round these openings inside the chest I form or fit seats
against which hang valves suspended from hinges above in such manner that when
the two valves are closed upon their seats both the inlet and outlet openings aro
closed.
At or near the contre of the back of each of the hanging valves I, make or fix a
joint upon which is pivotted the outer end of a bar or link, the inner onds of the
two links near the centre of the case being pivotted to a nut in which a sufficiently
strong vertical screw turns, the upper end of this screw passing through a stuffing
box in the cover of the valve case and being then provided with a wheel or handle
by which it can be turned. It will be seen that when the screw is turned round
so that the nut rises upon it the inner ends of the jointed bars rise with the latter,
their outer ends drawing together and opening the two hanging valves, and the
operation may be continued until the latter are horizontal and afford a clear water
way through the case.
When the screw is turned in the opposite direction the two valves are closed and
forced upon their seats with a pressure increasing as the angle between the jointed
bars increases.
By the method of construction described, the wear and tear of an ordinary sliding
sluice valve is avoided, and leather, india rubber, or other suitable soft material
may be used to form the seat or the face of the valves.
The nut may be provided with projections working in corresponding vertical
guides inside the valve case so as to ensure its vertical movement, and in this
method of arrangement a single valve may be used instead of two as in the
arrangement first described.
Instead of a nut and screw the inner ends of the jointed bars may be raised and
lowered by means of a rod rising and falling through the stuffing box and operated
by a lever or other convenient means outside.
Dated this 3rd day of October 1884

page_text: f
COMPLETE SPECIFICATION.
I, JOSEPH DAY, of Bath, in the County of Somerset, Engineer and Iron Founder
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 describod
and ascertained in and by the following statement and accompanying drawing
(that is to say):—
My present invention relates to suspended or flap valves used for controlling the
flow of fluids in pipes.
The accompanying drawing is in illustration of my Invention, figure 1 being a
vertical section through a doublo valve.
a is a case or chest containing the valve or valves c, c¹, so that it occupies the
dosired position in the line of the pipes the flow of liquid through which is to be
controlled or regulated, 6 and 61 being openings in the case a opposite to the ends
of both the inlet and outlet pipes to which the case a is bolted or otherwise
attachod, and round these openings inside the chest a I form or fit scats against
which hang valves c, c', suspended from hinges abovo at e, é¹, in such manner that
when the two valves are closed upon their seats both the inlet and outlet openings b
and are closed.
At or near the contre of the back of each of the hanging valves c and c¹ I make
or fix a joint upon which is pivotted the outer end of a bar or link i, i', the inner
ends of the two links near the centre of the case being pivotted to a nut h in
which a sufficiently strong vertical screw g turns, the upper end g' of this scrow
passing through a stuffing box in the cover of the valve caso a and being then
provided with a wheel or handle by which it can be turned.
It will be seen that when the screw is turned round so that the nut h rises upon
it the inner ends of tho jointed levers i, i, riso with the nut, their outor ends
drawing together and opening the two hanging valvos c, c', and the oporation may
be continued until the lattor are horizontal and afford a clear water way through
the case.
When the screw g is turned in the opposite direction the two valves c, c¹, are
closed and forced upon their seats with a pressure increasing as the angle between
the jointed bars increases.
By the method of construction described, the wear and tear of an ordinary sliding
sluice valve is avoided, and leathor, indin rubber, or other suitable soft material
may be used as shewn at d, a to form the seat or the face of the valves c, c³.
The nut may be provided with projections working in corresponding vertical
guides inside the valvo case so as to ensure its vertical movement, and in this
method of arrangement a single valve may be usod instead of two as in the
arrangement first described.
Figure 2 shews a vertical section of such an ärrangement, in which a single valve
only is used. a is the case, b, 61, the inlet and outlet openings, and c the hanging
valve. h is a nut to which the inner end of the bar i is pivotted, and k represents
guidos in which a crossbar attached to the nut h works, the ends of this crossbar
being preferably provided with friction rollors, as indicated at m.

page_text: Instead of a nut and screw the inner ends of the jointod bars may be raised and
lowered by means of a rod rising and falling through the stuffing box as shown in
figure 2, in which the spindle g not screwed, but is fixed to the nut h, and is
operated by a lever or other convenient means outside.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declaro that what
I claim is
1. The double suspended valves c, c' connected by links i, i¹, to a nut h made to
traverse in either direction by the screw or bar g substantially as described and
shown in figure 1.
2. The single suspended valve o connected by a link i to a nut h made to traverse.
in either direction by the bar or scrow g, and guided and controlled substantially
in the manner described and shown in figure 2.