Emergency Stop-valve for Steam Boilers, Fluid Pipes, and the like
Year: 1899

page_text: I, RALPH JOHN SMIT, of the Pier Engine Works, South Dock, Sunderland,
Engineer, do hereby declare the nature of this invention to be as follows;-
My invention is to use an ordinary flap or mitre valve which when closed stops
the passage in the pipe.
The valve is worked by a spindle with lever attached; the spindle is made steam
tight by a mitre face with a set bolt to keep it up to the face (or spring in place
of set bolt). A weight or spring is connected to the ends of the lever to ensure
the closing of valve when relieved from the catch.
The valve is kept open by a catch or sliding bolt with spring attached to firmly
keep the catch or bolt in place until relieved by a chain or small wire rope.
The rope or chain can be carried to any or several convenient places, and when
pulled withdraws the catch or bolt which allows the valve to fall against the
face closing the passage in the pipe, or the catch or bolt may be withdrawn by
electricity. The valve is then kept firmly closed by the "back pressure" until
the main stop valve is shut.
The valve can be made in a separate casting, or can be fitted into the ordinary
stop valve.
The invention is specially adapted for quickly shutting off steam from boilers,
It can also be used for quickly stopping the flow of liquids.
TX
1
1. Movah 1800
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Ralph John Smith.
Emergency Stop-valve for Steam Boilers, Fluid Pipes, and the like,
I, RALPH JOHN SMITH, of the Pier Engine Works, South Duck, Sunderland,
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 invention is to use an ordinary flap or mitre valve which when closed stops
the passage in the pipe.
The valve is worked by a spindle with lever attached the spindle is made steam
tight by a mitre face with a set bolt to keep it up to the face (or spring in place

page_text: of set bolt). A weight or spring is connected to the ends of the lever to ensure
the closing of valve when relieved from the catch.
The valve is kept open by a catch or sliding bolt with spring attached to
firmly keep the catch or bolt in place until relieved by a chain or small wire rope.
The rope or chain can be carried to any or several convenient places, and when
pulled withdraws the catch or bolt which allows the valve to fall against the
face, closing the passage in the pipe, or the catch or bolt may be withdrawn by
electricity. The valve is then kept firmly closed by the back pressure" until
the main stop valve is shut.
"
The valve can be made in a separate casting or can be fitted into the ordinary
stop valve.
The invention is specially adapted for quickly shutting off steam from Loilers.
It can also be used for quickly stopping the flow of liquids.
This invention has for object the employment of a Hap or other like valve in
a steam pipe or a fluid passage pipe as an extra or emergency valve to be released
by hand by electricity or by other agent operable to withdraw a bolt or catch by
which the valve can be kept open but is capable of being released for automatic
closing from the spot or from any distant position or positions whereby the flow
of steam or fluid can be quickly shut off and is designed for use in cases of emer-
gency and until the main stop valve can be shut off, after which the emergency
valve can be again reopened and be set in an open condition until the next emer-
gency occurs.
The invention is specially adapted for steam ships in which the passage of steam
to the engines can be cut off by the captain or officer in charge from a position
on the bridge or from the cabin in cases of extreme danger and before the engine
room attendant could answer his call bell or indicator to operate the main steam
lever or hand wheel to shut off.
An example of the invention is well represented on the annexed drawings.
Figure 1 end sectional elevation.
Figure 2 longitudinal section of a valve carrier or connecting length of piping
to be fitted to a steam supply or a fluid passage pipe for emergency purposes
as before explained.
A, valve of the flap or clack kind mounted on, say, a square portion of the
axle B which is carried by the shoulders C, C, of the short length of pipe D, with-
in which shoulders the axle has free turning motion. The axle extends from
outside the pipe D and has affixed to it a weighted lever E, the weight F of
which has a hole in one face of sufficient depth for retaining the free end of a
spring actioned bolt or catch G in the hole, which bolt is otherwise held by
the bracket cheeks H, H.
The outer end I of this catch bolt G is for connection of a chain or cord which
singly or by branch lines can be carried to any distant part for ready action to
withdraw the bolt G for the release of the valve A due to the fall of the
weight F which accelerates and ensures the fall and puts the valve A in contact
with the seating J, the facing edge of which projects slightly inwards for perfect
fit.
I purpose using the strap K with a centralising and adjustable pivot screw L
with the fixing nut M, these being suspended from the cover plate N of the
pipe D preferably bolted or screwed down on the head or cover N of the pipe by the
flanges P, P, the other flanges Q, Q, serving for the connection of the pipe D
to an ordinary steam supply or fluid pipe.
The steam or fluid passes through the pipe D in the direction of the arrow and
has free passage while the valve A is up and locked, as indicated by the full
lines in the drawings but the instant the bolt G is withdrawn the weight and valve
fall to the position shown in dotted lines and effectually and instantly shuts off
the flow..
I am aware that steam and fluid supply pipes have been provided for the ordi-

page_text: nary opening and closing operations but these have been and are controllable by
hand.
My invention is for an additional valve to the same piping as an emergency
valve for instantaneously and automatically shutting off the supply from a dis-
tance in cases of extreme danger independently of any action on the ordinary
shutting off valve.
The example shown represents the preferable arrangement but any drop lever
system releasable by the withdrawal of a catch can be adopted for the purposes
of my invention, whether the valve be of the plug or other kind, as found de-
sirable.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is
1. Providing a steam or fluid pipe with an additional or emergency valve
capable of release for automatic closing by the withdrawal of a catch or bolt from
a distance, substantially as described.
2. The particular construction or arrangement of emergency valve and
appliances therewith as represented on the annexed drawings consisting of flap
valve A, axle B, lever E, weight F, spring actioned catch bolt G, the valve A being
within the pipe D and capable of closing against the seating J, as and for the
purposes described.
TEL +1 f
1900