Means for Indicating Escape of Gas, Specially Applicable for Buildings and Domestic Use.
Year: 1886

page_text: Date of Application, 23rd Oct., 1886.
Complete Left, 25th July, 1887.
Complete Accepted, 26th Aug., 1887.
Means for Indicating Escape of Gas, Specially Applicable for
Buildings and Domestic Use.
I JAMES STOTT of 174 Fleet Street, City of London, Gas Governor Manufacturer
do hereby declare the nature of my said invention to be as follows:-
The object of this invention is to provide in an apparatus such as that described in
my application for Patent No. 10348 of 1886 certain means by which should the gas
after being turned off at the meter be turned on again a small but almost imperceptible
passage of gas is permitted to flow through and escape at those burners which have
been left open so that the stop valves will remain seated until the outlet of that escape
is discovered or the tap or taps through which the small quantity of gas is flowing is
or are turned off which will then permit the stop valves to rise and the gas to pass
through to be lighted in the usual manner.
The invention is also applicable for testing an escape of gas from defective joints,
pipes or otherwise without reference to the apparatus being fitted as a stop only
between one point and another such as a consumers service pipe and the branch
or branches connected therewith.
The invention consists essentially of a hole in the valve, in the valve box or
other convenient part of the apparatus or in a bye pass or other convenient part of
the pipes connecting the apparatus and said hole may be provided with a screw or other
device by which the aperture forming said passage can be determined so that gas
passing through would be little more than that required to produce a blue flame if
lighted.
The apparatus may have a dip float as with wet regulators, or a diaphragm or other
device as with dry regulators which can be acted upon by the pressure of gas to hold
the valves open and in equilibrium under the ordinary inflow of gas.
H. GARDNER,
166, Fleet Street, London,
Agent for the said J. Stott.

page_text: I, JAMES STOTT, of 174 Fleet Street, City of London, Gas Governor Manufacturer
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 :-
The object of this Invention is to provide in an apparatus such as that described in
the specification of my Patent No. 10348 of 1886, certain means by which, should
the gas after being turned off at the meter be turned on again, a small but almost
imperceptible passage of gas is permitted to flow through and escape at those
burners which have been left open so that the stop valves will remain seated until
the outlet of that escape is discovered or the tap or taps through which the small
quantity of gas is flowing is or are turned off which will then allow of an accumulation
of gas under the float and causes the stop valves to rise and the gas to pass through
to be lighted in the usual manner.
The invention is also applicable for testing an escape of gas from defective joints,
pipes, or otherwise without reference to the apparatus being fitted as a stop only
between one point and another, such as a consumer's service pipe and the branch or
branches connected therewith.
The invention consists essentially of a hole a in the valve box F in the valve
itself or in some other convenient part of the apparatus such as in the screen D, or
in a bye pass b, or other convenient part of the pipes B, C, connecting the
apparatus, and said hole a has preferably a screw c or other device as in the annexed
drawing by which the aperture forming said passage can be determined, so that gas
passing through would be little more than that required to produce a blue flame if
lighted.
The apparatus may have a dip float I as with wet regulators or a diaphragm
or other device as with dry regulators, which can be acted upon by the pressure of
gas to hold the valves & G³ open and in equilibrium under the ordinary inflow
Ր

page_text: 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. Making an aperture in one of the valves G, G', in the valve box F, in the
screen D, or to use a bye pass b in a stop valve apparatus, as and for the purpose or
purposes described.
2. Fitting an adjustable screw c, in an aperture a of a stop valve apparatus
substantially as shown in the annexed drawing for the purposes described.