Improvements in or connected with Gauge Glasses or Water Level Indicators.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in or connected with Gauge Glasses or Water Level
Indicators.
I, JAKOB ERNST STEINER, of 47, Amalienstrasse, Munich, in the Empire of
Germany, Merchant, do hereby declare the nature of this invention to be as
follows:
This invention relates to a means for automatically closing the two cocks of
water level indicators or gauge glasses in case of the breakage of the glass.
In the tightening screw head of the upper cock, a tubular valve is arranged,
whose movement is limited by a guide slot and a pin screw in the tightening
head. This valve is held up by a spiral spring and the steam enters the glass
tube through openings near the top.
If by the breakage of the glass the connection between the two cocks is destroyed,
the steam pressure will overcome the pressure of the spiral spring and press the
valve with its upper enlarged end or shoulder against the upper end of the washer
screw-head and the steam will be shut off.
cap
On the lower cock is arranged a cap or sleeve (preferably screwed) which has
its upper part formed as a spherical valve seat. In the space between the cock
and the cap, a ball valve is inserted which is fitted to the inner surface of the
or sleeve but rests below by its own weight when the pressure is equalised.
Passages are formed in the lower seat which admit. of the passage of water. If
then by the breaking of the glass the connection is interrupted, the ball valve
will be raised by the pressure and pressed to its seat in the cap and the water will
thus be shut off.
In order when blowing out the cocks that the valves shall not close, the section
of the lower blow out cocks is diminished by one half so that, when blowing out,
the pressure will always be maintained and the valves be not closed by the
pressure.
By this arrangement of shut-off valves a glass holder may be inserted without
previously closing the inlet cocks. If the fresh glass holder be inserted, the blow
out cock is opened and at the same moment. the two valves will open themselves
automatically. If however the blow out tap be not first opened the valves only
open automatically after a short interval.
All types of water gauge-glasses may be arranged with this improvement.
Dated this 22nd day of Mar 1897
W. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.

page_text: Improvements in or connected with Guage Glasses or Water Level
Indicators.
"
I, JAKOB ERNST STEINER, of 47, Amalienstrasse, Munich, in the Empire of
Germany, Merchant, 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 a means for automatically closing the two cocks of
water level indicators or gauge glasses in case of the breakage of the glass.
The invention is shown in the accompanying drawings in which
Figures 1 and 2 are vertical sections of upper and lower gauge cocks,
Figure 3 an elevation of the upper tubular valve;
Figures 4, 5 and 6 sections on the lines e f, a b and c d respectively of the case
valve.
In the tightening screw head t, Figure 1, of the upper cock, a tubular valve g
is arranged, whose movement is limited by a guide slot h and a pin screw s in the
tightening head. This valve is held up by a spiral spring i and the steam enters
the glass tube through openings kk near the top.
If by the breakage of the glass the connection between the two cocks is
destroyed, the steam pressure will overcome the pressure of the spiral spring and
press the valve with its upper enlarged end or shoulder against the upper end
of the washered screw-head t and the steam will be shut off.
On the lower cock, Figure 2, is arranged a cap or sleeve (preferably screwed)
which has its upper part formed as a spherical valve seat. In the space between
the cock and the cap a ball valve m is inserted which is fitted to the inner surface
of the cap or sleeve but rests below by its own weight when the pressure is
equalised. Passages are formed in the lower seat which admit of the passage
of water. If then by the breaking of the glass the connection is interrupted, the
ball valve m will be raised by the pressure and pressed to its seat in the. cap
and the water will thus be shut off.
In order when blowing out the cocks that the valves shall not close, the section
of the lower blow out cocks n and n¹ is diminished by one half so that, when
blowing out, the pressure will always be maintained and the valves be not closed
by the pressure.
By this arrangement of shut-off valves a glass holder may be inserted without
previously closing the inlet cocks. If the fresh glass holder be inserted, the blow
out cock is opened and at the same moment the two valves g and m will open
themselves automatically. If however the blow out tap be not first opened the
valves only open automatically after a short interval.
All types of water gauge glasses may be arranged with this improvement.
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:-
-
A gauge glass or water level indicator in which a valve (9g and m respectively)
is arranged in each of the gauge cocks, both of which normally stand open (when
the gauge glass is intact) but on the breakage or removal of a gauge glass are
closed by the pressure of the escaping steam, so that a further escape of steam
cannot take place and the gauge glass may be inserted or changed while the inlet
taps are open, which valves open again automatically after the insertion of the

page_text: fresh glass and the opening of the blow out cock, substantially as hereinbefore
described.
Dated this 7th day of February 1898.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.