Improvements in and relating to Steam and other like Valves.
Year: 1894

page_text: Date of Application, 9th Aug, 1894-Accepted, 15th Sept., 1894
COMPLETE SPECIFICATION.
Improvements in and relating to Steam and other like Valves.
I, GOTTFRIED GROSSMANN of 172 Münster Strasse, Dortmund, in the Kingdom
of Prussia and German Empire, 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:-
This invention relates to valves for steam and other fluids or liquids under
pressure and its object is to provide means to ensure an automatic closing of
such valves upon the occurrence of an accident such as the bursting of a steam pipe
or an undue escape of steam.
The accompanying drawings illustrate in what manner this invention may be
carried into effect, similar letters of reference being used to indicate similar parts
where they occur in the different figures.
Figure 1 shews the application of an improved valve to the dome of a steam
boiler.
Figure 2 illustrates a modified form of valve attached to a steam pipe.
The valve casing A contains the valve disc B, which may be of the usual or any
ordinary construction and to the under side of which is attached the perforated
coned or stepped casing B' the aggregate area of the perforations being at least as
large as the sectional area of the pipe or port in which the valve is placed, so that
the passage of the steam or other fluid or liquid is not impeded.
The valve stem P passes through the cap of the valve casing and into a framing
consisting of the pillars V V and the bridge W. The end of the valve stem is
screwed and engages with an extension from a similarly screwed hand wheel T
which by means of the sleeve or extension S engages with the bridge.
By means of the hand wheel T the valve inay be used as an ordinary valve.
After the valve is opened by screwing the hand wheel in one direction the wheel
may be returned to a certain extent without imparting any motion to the valve
owing to the greater length of the sleeve S than the bearing in which it rotates.
The valve is then free to move with the hand wheel and is kept in the open position
by the lever R to which is attached a counterweight Q. If desired the counter-
weight may be substituted by a spring.
If any accident should occur such as the breakage of any pipe on the outlet
side D of the valve or any sudden escape of the steam or other fluid or liquid, then
a difference of pressure is established between the inlet side C and the outlet side D
and the valve disc B is forced down by the passage of the steam through the
perforated casing M.
As an additional measure of precaution a cord or chain may be fastened to the
end of the lever R so that a pull upon the chain ensures the closing of the valve.
By this arrangement the valve may be operated from a distant point.
By the use of valves constructed as herein before described much damage to
property and loss of life will be prevented as the valve will either close auto-
matically or may be closed from a point away from the issuing steam in the case
of a broken steam pipe.
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
1. An automatically closing steam or other like valve constructed arranged and
operated substantially as and for the purpose hereinbefore set forth and as illustrated

page_text: 2. In a steam or other like valve the combination with the valve disc of a
perforated coned or stepped casing constructed and arranged substantially as and
for the purpose hereinbefore set forth and as illustrated by the accompanying
drawings.
3. In a steam or like valve constructed as before described the combination with
the valve stem of a hand wheel T furnished with a sleeve or extension S, and a
counterweighted or similar lever R, all constructed arranged and operated
substantially as hereinbefore set forth and as illustrated by the accompanying
drawings.
Dated this 8th day of August. A D 1894
WILLIAM E. HEYS,
Agent for the Applicant.