Improvements in or applicable to Valves for Distributing Fluids under Pressure.
Year: 1894

page_text: PROVISIONAL SPECIFICATION.
Improvements in or applicable to Valves for Distributing Fluids
under Pressure.
I FRANK WILLIAM REED of No. 61, Ardwick Green, Manchester, Engineer,
lo hereby declare the nature of this invention to be as follows:-
My said invention relates to improvements in or applicable to valves used in
distributing or controlling the flow of fluids such as air steam gases or liquids under
high pressures.
According to my said invention I make the parts of the plug of the valve of
such proportions and shapes that the pressures acting thereon balance or nearly
balance each other whereby the plug may be turned with great facility whatever
may be the pressure of the fluid. Such balancing is obtained by an enlargement
on the plug.
The plug is packed or rendered tight by an annular packing of U or other
section or by metallic or other backings.
Opposite to the inlet port in the casing of the valve an annular groove is
formed in the plug with which communicates a transverse hole bored through the
plug.
Communicating with the said transverse hole is a port or passage the outer
end of which when the fluid is intended to pass through the valve coincides in
position with the exit port in the valve casing. By turning the plug through a
certain angle the coincidence of the ports is destroyed and the passage of the fluid
through the valve is prevented. By turning the plug through a still greater angle
another passage in the plug is brought opposite to the exit port and the fluid can
run through the plug to say the exhaust or escape pipe.
The whole forms a
multiple way valve so that for example when used in connection with a cylinder the
fluid under pressure may be passed to the cylinder and when it has done its work
the supply may be cut off and the fluid be allowed to escape.
The number of passages may be increased if desired so that a single valve may be
used to control the supply of fluid to two or more cylinders or for instance to each
end alternately of the cylinder of a motor operated by fluid under pressure.
I make the lower bearing surface of the plug and of its casing conical or conoidal
preferably curved in profile so that the contours of the contact surfaces may not
materially change by wear.
Dated Second dex of May 1891
E. T. WHITELOW, A.M. Inst. C.E.,
70, Deansgate, Manchester, Agent for the Applicant.

page_text: Improvements in or applicable to Valves for Distributing Fluids
under Pressure.
I FRANK WILLIAM REED of 61 Ardwick Green, Manchester, 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:-
My said invention relates to improvements in or applicable to valves used in
distributing or controlling the flow of fluids such as air steam gases or liquids under.
high pressures.
In the accompanying drawing
Figure 1 is an elevation partly in section of a valve inade in accordance with my
said invention.
Figure 2 is a plan with the plug removed.
According to my said invention I make the parts of the plug a of the valve
of such proportions and shapes that the pressures acting thereon balance or so
nearly balance each other as only to press down sufficiently to keep the valve tight
so that the plug may be turned with great facility whatever may be the pressure
of the fluid. Such balancing is obtained by an enlargement on the plug at a'.
The larger the diameter at this point the less the pressure of the plug on its seat.
The plug is packed or rendered tight by an annular packing b of U or other
section or by metallic or other packings. The flange a retains the plug centrally
on its seating and is provided with passages a³ to moisten the packing leather."
Opposite to the inlet port c in the casing of the valve an annular groove e is
formed in the plug with which communicates a transverse hole d bored through
the plug.
Communicating with the said transverse hole is a port or passage f the outer end
of which when the fluid is intended to pass through the valve coincides in position
with the exit port 9 in the valve casing. By turning the plug through a certain
angle the coincidence of the ports is destroyed and the passage of the fluid through
the valve is prevented. By turning the plug through a still greater angle another
passage in the plug is brought opposite to the exit port and the fluid can run
through the plug to say the exhaust or escape pipe. The whole forms. a multiple
way valve so that for example when used in connection with a cylinder the fluid
under pressure may be passed to the cylinder and when it has done its work the
supply may be cut off and the fluid be allowed to escape.
The number of passages may be increased if desired so that a single valve may
be used to control the supply of fluid to two or more cylinders or for instance to
each end alternately of the cylinder of a motor operated by fluid under pressure.
I make the lower bearing surface of the plug a and of its casing conical or
conoidal preferably curved in profile so that the contours of the contact surfaces
may not materially change by wear.
The plug is turned by a handle k in the usual manner.
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.―
1. The valve constructed and arranged substantially as and for the purpose
herein before set forth and shown.
2. In a hydraulic valve the partially balanced plug a with annular and transverse
water passages substantially as set forth and shown.

page_text: 3. In a hydraulic valve the plug a having the conical or conoidal lower bearing
surface at the enlargement a' for partially balancing the pressures water passages and
an annular groove substantially as set forth and shown."
Dated 1st day of February 1895.
E. T. WHITELOW, A.M. Inst. C.E.,
70, Deansgate, Manchester, Agent for the Applicant.