Improvements in Apparatus for Regulating the Flow and Pressure of Gas,
Year: 1898

page_text: Date of Application, 26th Aug., 1898
Complete Specification Left, 10th May, 1899-Accepted, 24th June, 1899
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Regulating the Flow and Pressure
of Gas,
I, ALEXANDRINE NIEL, nèe JANIOT, of 14, Rue Vineuse, Paris, in the Republic
of France, do hereby declare the nature of this invention to be as follows:-
-
gas and
This invention relates to apparatus for regulating the flow and I pressure of
is adapted for use, in connection with gas engines or for other purposes where
an even and automatic flow and pressure is desired.
According to this invention the gas enters the apparatus through a valve nor-
mally held open by a counter-weighted lever operating on the valve stem or
spindle, such stem is also attached to a flexible bellows or diaphragm forming the
bottom or part of the bottom of a chamber from which a small opening is made
into the main gas chamber with which it is otherwise not in connection. The
size of the opening between the chambers is governed by any suitable appliance
such as by a conical ended thumb-screw and the counterweights operating upon
the valve may be varied or adjusted as desired.
The top of the main gas chamber is also provided with a bellows or flexible
top. With this construction the operation is as follows:-The gas enters the
main chamber, distends the flexible top and also passes through the hole to the
second chamber where it depresses the flexible bottom overcoming the action of
the counterweights and gradually closing the valve. If the gas or a portion of
same is rapidly withdrawn from the main chamber the flexible top would fall
somewhat and there would be a flow of gas through the hole, from the second
chamber and a gradual raising af the valve. The usual severe shocks where gas
is suddenly withdrawn will be obviated and the time at which the valve reopens
can be regulated by the size of the opening between the chambers.
Dated this 26th day of August 1898
PHILIP M. JUSTICE,
55 and 56, Chancery Lane, London, Chartered Patent Agent,
For the Applicant.
Improvements in Apparatus for Regulating the Flow and Pressure
of Gas.
I, ALEXANDRINE NIEL, nè JANIOT, of 14, Rue Vineuse, Paris, in the Republic
of France, 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:—

page_text: and is adapted for use in connection with gas engines or for other purposes where
an even and automatic flow and pressure is desired.
According to this invention the gas enters the apparatus through a valve nor-
mally held open by a counter-weighted lever operating on the valve stem or
spindle, such stem is also attached to a flexible bellows or diaphragm forming
the bottom or part of the bottom of a chamber from which a small opening is
made into the main gas chamber with which it is otherwise not in connection.
The size of the opening between the chambers is governed by any suitable
appliance such as by a conical ended thumb-screw and the counterweights opera-
ting upon the valve may be varied or adjusted as desired.
The top of the main gas chamber is also provided with a bellows or flexible
top. With this construction the operation is as follows:--The gas enters the main
chamber, distends the flexible top and also passes through the hole to the second
chamber where it depresses the flexible bottom overcoming the action of the
counterweights and gradually closing the valve. If the gas or a portion of same
is rapidly withdrawn from the main chamber the flexible top would fall somewhat
and there would be a flow of gas through the hole from the second chamber and
a gradual raising of the valve. The usual severe shocks where gas is suddenly
withdrawn will be obviated and the time at which the valve reopens can be regu-
lated by the size of the opening between the chambers.
In the accompanying drawing is illustrated one form of my invention in
which-
Fig. 1 is a section through the apparatus on line 1, 2, 3 of Fig. 2, and
Fig. 2 is a section on line 4, 5, 6, 7 Fig. 1.
The main gas chamber A is composed of a metal body a and a flexible top a
At the side of A is the smaller chamber B the bottom of which is closed by a
bellows b. The stem D passes through chambers A and B and is guided in a
sleeve and secured to the bellows b, this stem D carries in chamber A a valve H
placed in the gas inlet I, and at the other end, below the chamber B, it bears
on a lever R, pivoted at R', and provided with sliding weights P, P, which nor-
mally hold the valve H open.
The two chambers A and B have communication with each other through the
hole K the opening of which is regulated by the needle valve M which is operated
from outside by the thumb screw N.
A water gauge (if desired) may be affixed outside, communicating with the
interior of the reservoir A, so as to indicate the pressure of gas it contains.
The operation is as follows:-
Gas enters by the inlet I and passes into chamber A inflating the flexible topa,
then enters chamber B through the hole K acts on the bellows b and thus, through
stem 1) and valve H closes the inlet I. The surface of this bellows is sufficiently
great so that a slight pressure over its surface is sufficient to overcome the action
of the weights P (which may be increased or diminished at will until the requisite
pressure has been registered on the gauge for the proper working of the engine).
If now a suction or outflow takes place through the outlet pipe S, the void would
be abruptly felt in chamber A and bring down the bellows a¹, and the same
effect would be felt in chamber B (through the medium of hole K) with the
result that the bellows would rise by the action of the weights P thus opening
the valve H, and permitting gas to enter, so that the abrupt shock from the
suction would be greatly reduced. The delay in opening the valve following the
suction, may be regulated by screwing up more or less the needle valve M into
the hole or passage K.
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. The improved apparatus for regulating the flow and pressure of gas com-
prising a gas chamber, a secondary chamber, a small opening between same, a

page_text: bellows or like device in the secondary chamber a gas inlet valve controlled by
same and means for normally keeping the inlet valve open substantially as and
for the purpose described.
2. The improved apparatus for regulating the flow and pressure of gas substan-
tially as described and illustrated in the drawing.
Dated this 10th day of V... 1800
PHILIP M. JUSTICE,
Chartered Patent Agent, 55 and 56, Chancery Lane, London, W.C.,
For the Applicant.