Year: 1885

page_text: I, JAMES LYLE, of 29 Causeyside, Paisley, in the County of Renfrew, North
Britain, Engineer, do hereby declare the nature of this Invention to be as follows,
that is to say :-
My said Invention has for its object to simplify and improve the construction
and action of pressure-reducing valves, and my improved valves are applicable for
.air, steam, water, or other fluid.
My improved valve is by preference loaded with a directly acting weight, but it
may, if found desirable in any case, be loaded with a directly acting spring or with
a weight or spring acting through a lever. When a weight is applied directly the
valve box is placed vertically, the inlet for the air or other fluid under pressure
being at one side, whilst the pipe for leading away the air or fluid after it has
passed the valve is connected to the bottom. The upper part of the valve box is
bored so as to be as truly cylindrical as possible, and there is fitted to work.
accurately within it a cylindrical plug or plunger, the upper part of which or a
spindle formed or fixed on it projects through the top of the valve box and has the
weight fixed on it. The lower part of the plug is hollow, and several graduated
holes are made through the sides into the hollow part in an inclined or helical
series. The valve box is made with an internal enlargement with which the inlets
communicate, and when fluid is passing through the apparatus, it passes through
one or more of the holes into the interior of the plug. The pressure of the fluid
which has passed in this way acts upwards on the plug and against the weight and
the plug rises or falls when that pressure is greater or less, the rising, action
carrying one or more of the holes above the inlet enlargement and so closing them,
and the falling action producing the reverse effect. The plug is made with two
shoulders or enlargements near its lower end and the interior of the valve box is
made with corresponding enlargements the step at each enlargement forming &
valve seat. The two seats are one above and the other below the inlet space; and
when the outlet from the apparatus is closed the pressure causes the plug to be
lifted so far that its shoulders close against the seats. The upper part of the plug
may be arranged to work through a stuffing box; or it may be packed in various
ways; but for many purposes no packing will be required if the plug is made a
sufficiently accurate fit and of a suitable length.
Dated this sawL
1
!!

page_text: I, JAMES LYLE, of 29 Causeyside, Paisley, in the County of Renfrew, North
Britain, Engineer, 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, that is to say:-
My said Invention has for its object to simplify and improve the construction
and action of pressure-reducing valves, and my improved valves are applicable for
air, steam, water, or other fluid.
My improved valve is by preference loaded with a directly acting weight, but it
may, if found desirable in any case, be loaded with a directly acting spring or with
a weight or spring acting through a lever.
Modifications of my improved pressure-reducing valves as loaded with a directly
acting weight are shown on the accompanying sheet of explanatory drawings,
figure, 1, being a side elevation, figure, 2, a plan as with the weight removed,
figure, 3, a vertical section, figure, 4, a horizontal section, and figure, 5, a diagram
showing the inlet holes as laid out on a flat surface. Figures, 6, and 7, are vertical
and horizontal sections respectively of a second modification of the valve. In these
drawings the same reference numerals are used to mark the same or like parts
wherever they are repeated.
The valve box, 8, which is placed vertically has the inlet, 9, for the air or other
fluid under pressure at one side, and its upper part is bored so as to be as truly
cylindrical as possible. There is fitted to work accurately within the valve box, 8,
a cylindrical plug or plunger, 10, and having a spindlé, 11, formed on it on which
a weight, 12, is fixed. The lower part of the plug, 10, is hollow, and several
graduated holes, 13, are made through the sides into the hollow part in a helical
series. These holes being shown as laid out on a flat surface in the diagram
figure, 5. The valve box is made with an internal enlargement, 14, extending
round the plug, 10, the inlet, 9, communicating with this enlargement and when
fluid is passing through the apparatus, it passes through one or more of the holes, 13,
'into the interior of the plug, 10, from which it passes downwards into the lower
part of the valve box whence it can be led away through a pipe which in the
modification shown in figures, 1, to 4, is connected by a coupling, 15, to the bottom
of the valve box, 8. The pressure of the fluid which has passed in this way acts
upwards on the plug, 10, and against the weight, 12, and the plug rises or falls
when that pressure increases or diminishes, the rising action carrying one or more
of the holes, 13, above the inlet enlargement, 14, and so closing them and the
falling action producing the reverse effect. The plug, 10, is made with two
shoulders or enlargements near its lower end and the interior of the valve box, 8,
is made with corresponding enlargements the step at each enlargement forming
a valve seat. The two seats are one above and the' other below the inlet space;
and when the outlet from the apparatus is closed the pressure in the apparatus
causes the plug, 10; to be lifted so far that its shoulders close against the seats,
which is the position in which it is shown in the drawings. The upper part of
the plug, 10, is fitted with two packing rings, 16, to prevent the escape of the fluid
under pressure.

page_text: The modification of the valve shown in figures, 6, and 7, is similar to that shown
in figures, 1, to 4, with the exception that the connection, 15, for the pipe which
leads away the fluid after it has passed the valve is arranged at one side and so as
to be in a straight line with the inlet, 9, at the opposite side of the valve box, 8, the
opening in the bottom of the valve box, 8, being in this case closed by a screw
plug, 17.
The upper part of the plug, 10, may be arranged to work through a stuffing
box; or it may be packed in various ways besides that shown in the drawings;
but for many purposes no packing will be required if the plug is made a sufficiently
accurate fit and of a suitable length.
Having now particularly described and ascertained the nature of my Baid
Invention and in what manner the same is to be performed I declare that what
I claim is
The improved construction and combination of parts forming a pressure-reducing
valve substantially as and for the purposes herein before described.
1000
EDMUND HUNT,
Applicant's Agent.