Improved Means for Regulating or Controlling the Supply of Gas to Gas-engines.
Year: 1887

page_text: Improved Means for Regulating or Controlling the Supply of Gas
to Gas-engines.
I EMIL SOHRABETZ of 2 Deutschmeisterplatz, Vienna, in the Empire of Austria
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 :-
-
The object of this invention is to obviate the prejudical effects produced by the
irregular intermittent consumption of gas by gas-engines upon the neighbouring
lighting apparatus. For this purpose a valve is used, which I term a bellows valve
and which is situated in the main pipe and in the front of the bag or bellows at the
point where the gas enters the same, and the passage of the said gas is regulated by
the two walls or sides of the bag, which walls are more or less inflated, in such a
manner that the bag is always kept in a moderately slack state during the motion of
the engine, provision being made in the arrangement of the devices which operate the
valve, for allowing the bag to vibrate to a certain extent without imparting its motion
to the said valve as has already been set forth with regard to the apparatus for the
same purpose, described in the specification of former Letters Patent No. 7875
A.D. 1884 for "Gas Governor for gas motor engines," to prevent the action of the
regular pulsations of the said bag upon the valve and also to prevent too frequent
motions of the valve in consequence of the regulation of the engine.
This lost motion of the bag can be provided for at any part of the mechanism, but
preferably at the point of application of the force to the walls or sides of the bag,
or bellows in order to confine the motion of the mechanism to the regulation proper

page_text: of the valve, and not to allow the masses of the same to act during the normal
motion.
As the bag or bellows walls or sides are not always inflated uniformly, and an
equal resistance is to be exerted on both sides, the valve can either consist of two
parts and each part be served from one side, or the transmitting devices on both
sides are so combined that their effects upon the single valve complete, or compensate
for each other. Accordingly the effect produced by one side of the bag can even be
nil or negative as against the effect produced by the other side.
In the drawing the Figures of which are hereinafter referred to, several forms or
modifications of the improved valve is represented.
Figure 1 represents a diagram of one form of the said valve. Here, as also in the
other figures the joints are indicated by simple circles, and the fixed axes of rotation
by double circles.
A is the bag, a the valve, is a fixed axis on the same, c, c', and d d' are double
armed levers pivoted upon the fixed axis the ends of the double armed levers engage
with rings or frames 9. which are secured to the bag walls, and in which rings or
frames the double armed levers have, as before stated, a certain amount of lateral
movement. The ends of the short arms c and d of the said levers are connected by
links e and which transmit the motion produced by the rings or frames g and h to a
rod connected to a link k which is secured to the axis of the valve.
In the arrangement shown in Figures I, II, and III a throttle valve is used,
although any other suitable valve can be employed, such as simple, double seat valves,
clacks, or slide valves, circular rotary, or tubular slide valves, the latter with one or
preferably with more openings.
The throttle valve is however preferable because it is of the most suitable construc-
tion and is more advantageous. It is independent of the gas pressure, has no seating
and offers the least frictional resistance which on account of the necessary easy action
of the device is of the greatest importance.
In order to obviate any shocks, it is desirable to let the ends of the double armed
levers act as springs.
Now the mode of action of the valve consists in this, that as soon as the bag walls
pass from the slack to a distended state, the valve passage is contracted and inversely
when the bag is too slack it is enlarged.
It is obvious that various modifications may be made in the arrangement for
transmitting motion from the bag walls to the valve, without departing from
the spirit of the invention, such for instance as that shown by way of example in
Figures II to VI.
In Figure VI the arrangement shown in Figure II is situated in the interior of the
bag, so that the action of the bag walls is taken from the inside, and the lost motion is
still maintained. The above described double armed lever c¹ d' will be quite short, or
may be altogether dispensed with.
In like manner the other modified devices may be placed in the interior in which
case the arms c', d' can be dispensed with and the points of application can be at the
ends c and d.
These internal devices however, are not readily accessible for adjustment and super-
intendence, and do not allow all the gas to be sucked from the bag.
In another form or modification shown in Figure IV two sliding gridiron valves
are used which move one above the other. In this case also the motion of the bag
walls is turned to account to complete or to compensate the action upon the valve. In
like manner also other slide valves can be employed If circular or tubular rotary
slides are made very large and are provided with many slits, as represented in Figure V,
they can be moved directly by the levers c¹ and d. Likewise the valves shown in
Figures IV and V can be replaced by any other suitable valves if desired.
These modifications are however, of minor importance from the reasons above stated
as are also the modifications in which the movement for the regulation is taken from

page_text: one side only of the bag or bellows and which would be only partial executions of my
invention.
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 :-
First. The combination with the india rubber bag or bellows of a gas engine, of
suitable transmitting levers and devices and a throttle valve, provision being made for
lost motion by which combination and arrangements the action of the two side walls
of the bag or bellows on the valve is supplemented or compensated for the purpose of
keeping the bag or bellows continually moderately slack.
Second. The modifications in the arrangement and construction of the levers, links
and valves substantially as and for the purpose specified.
Dated this 22nd day of Santamber 1887
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London,
Agents for the Applicant.