Improvements in Gas Pressure Regulation.
Year: 1891

page_text: Date of Application, 25th Sept., 1891-Accepted, 6th Feb., 1892
COMPLETE SPECIFICATION.
Improvements in Gas Pressure Regulation.
I, JOHANNES FLEISCHER, Gentleman, trading as Fleischer and Company, of
12 Crauachstr Sachsenhausen Francfort on the Maine, Germany do hereby
declare the nature of this invention and in what manner the same is per-
formed to be particularly described and ascertained in and by the following
statement:
The object of this present invention is to construct a gas regulator, in which the
disadvantages accruing from the accidental sinking of the fluid level in the regulator,
are obviated.
These disadvantages are as follows:-
1.) Gas can escape into the room in which the regulator is standing.
2.) The gas flames are entirely or partially extinguished.
3.) In the case of gas motors, stoppage is often caused owing to the gas
being cut off.
4.) The regulator fluid is often sucked out into the service.
feed
I have succeeded in obviating these disadvantages by means of the apparatus
hereinafter described and illustrated in the accompanying drawings in which similar
letters denote similar parts throughout the several views.
Fig. 1 is a vertical section through the apparatus.
Fig. 2 shows a section on line y y in Fig. 1.
Fig. 3 is a vertical section showing a modification of the apparatus.
Fig. 4 shows another modified form in part section and
Fig. 5 is a partial section showing a constructive detail.
Referring to Fig. 1. F is the exterior casing of the regulator into which the fluid
is placed and which is provided with the interior cylindrical part I and cover D.
G is the regulator bell having attached thereto the perforated tube B sliding on
the interior perforated tube A which is preferably cast in one piece with the outer
regulator casing. The interior tube A of the regulator is provided at its lower
end with perforations, whilst the lower end of tube B is full.
The two tubes A and B also vertically guide the regulator bell. Inside A, a
piston valve B' is arranged to slide vertically by means of its rod C¹ jointed to the
upper rod C which is attached to the bell G.
The two rods C C are so jointed as to allow a certain amount of play, C¹ being
provided with a button C³, embraced by the fork or stirrup E of rod C, which
lattor extends through the cover D. The bell may be weighted by means of
weights H.
The apparatus works in the following manner :-
Gas enters at the inlet A' and passes in the direction of the arrows through the
lower perforations of tube A into the same, rising in the same and passing out
through the perforations of A and B into the interior of the bell G and thence
to the outlet.
If now the pressure in the bell G increases, the latter will be raised and as
the lower part of the tube B is not perforated the gas inlet will be gradually
closed.
The gas in the bell G can be used up however to a certain small extent, without
varying the inlet owing to the play of the button C in the stirrup E. This arrange-
nent has the additional advantage that by means of the same sudden variations in
he pressure in the service, and consequent jumping and bobbing of the gas flames,
re avoided.
-As soon as the consumption of gas, however increases for any length of time, the

page_text: bell sinks increasing the gas inlets through tubes A and B, owing to the depression
of the piston B' opening up more of the lower perforations of tube A. This
arrangement of. the perforated tubes A and B and piston B¹ effects a very sensitive
regulation of the gas pressure.
The sensitiveness may be still more increased by means of the device illustrated
in Fig. 3. Instead of the guide rod Cand stirrup E, a tube C is substituted, in
which the button C² of the rod C¹ slides, the latter however being provided with
a collar C' against which the lower end of the tube C comes. The tubular slide B
is also omitted in this case, the tube C sliding in two glands a and b. These glands
are provided with holes which allow sufficient gas to pass into the bell G, the main
gas supply passing through the perforations of the tube A. into the lower annular
space which is separated from the liquid of the regulator by a bell shaped
sheet or other metal casing I and thence to the outlet. The upper gland a is
provided with an upwardly projecting rim N whilst a felt or faced metallic
disc M is arranged inside at the top of the bell and close tight on to the top of
the tube C. If now the fluid level sinks for any reason, the bell G which is
weighted at H will sink too, when the disc M will close onto the rim N.
This closure however will take place before the fluid level has sunk sufficiently
to allow gas to escape underneath the bell any escape of gas is thus effectually
avoided nor can the liquid in the regulator be sucked out of the same by the
engine, as in this case the bell would be depressed and the closure take place.
In neither case however is the gas supply interrupted as the same can pass freely
to the service, but the pressure will not be regulated, as the regulating valve is
opened entirely. This will become noticeable in gas lighting by the flames
blowing and flaring and in motors by a jerking of the ignition flame. In this
case it is simply necessary to refill the regulator when it will immediately work
properly again.
Instead of the above described device, that shown in Fig. 4 may also be
employed. Here instead of a felt or faced metallic disc M, a conical valve a³ is
employed the rim N on the upper gland a being omitted and the latter turned out
at a¹ to fit the valve. In this case it is advantageous to bore the glands larger
round the rod at a and b, to allow the gas to pass instead of perforating them as
previously described.
The apparatus works exactly as shown in Fig. 3. It entirely prevents any escape
of gas whatever and also prevents stoppage in gas motors owing to the gas supply
being cut off and the extinguishing of the igniting flame is also impossible.
It also obviates the necessity of the so called feed valves in gas motors
which valves can only be regulated or weighted in the gas room itself and
consequently without the aid of a light.
The herein before described device can also be employed with dry regulators
and in this case operates in the same manner as soon as the membrane of the
regulator becomes leaky, the disc M will close on to the rim N preventing any
escape of gas, whilst the gas supply takes place directly instead of through the
regulator.
Where the gas employed to drive the motor is not thoroughly purified, the valve
of the regulator is preferably made casily accessible often, in such cases, gets clogged
up with tar. In order to meet this case, 1 arrange the valve as shown in Fig. 5.
The gas enters the regulator at a, the central tube is not perforated, being pro-
longed downwards to about the same length as the outer casing A'. This latter is
provided with a thread a* and cap A³ screwed onto same.
The valve B is arranged at the lower end of rod C¹ and is preferably conical
closing onto its seat a in the end of tube A. The other parts of the regulator
remain the same as previously described. The operation is so evident as to need no
further description, the gas passing from a through valve B' to the outlet Y
and at 6 to the regulator bell. The valve B' can be cleaned at any time being
easily accessible.

page_text: Having now particularly described my invention and the manner of performing
the same what I claim is :-
1.) The combination of the bell or membrane G, the perforated sliding tube B
and stationary tube A having upper and lower perforations, and provided with
piston valve B connected by means of loosely jointed rods C C' to the bell, and
the
gas
inlet and outlet arranged as described.
2.) In a gas regulator, the combination of the tube A having lower perforations
and watertight cap I the piston B' having rod C¹ with sliding attachment to
tube C, said tube C moving in perforated glands a, b, and being attached to the
bell G, the latter being provided with a felt or other disc M, adapted to close onto
the top of tube A. in the manner and for the purpose substantially as described.
3.) In a gas regulator the combination of the tube A extended downwards and
having lower valve seat a' and conical valve B' attached to the bell by rod C the
exterior casing A² and gas tight cap A³ with gas inlet and outlet arranged sub-
stantially as described and shown.
Dated this 21st day of Sentember 1891.
RAYNER & CASSELL,
37, Chancery Lane, London, W.C., Agents for the Applicant.