Improvements in Gas Pressure Governors or Regulators.
Year: 1892

page_text: Date of Application, 13th Jan., 1892
Complete Specification Left, 27th Feb., 1892-Accepted, 2nd Apr., 1892
PROVISIONAL SPECIFICATION.
Improvements in Gas Pressure Governors or Regulators.
I, ADOLPH ALTMANN of 684 Ackerstrasse Berlin, N., Germany, Engineer, do
hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in gas pressure governors or regulators
(hereinafter referred to as governors) which act in an automatic manner to
ensure uniform pressure independent of fluctuations in the pressure of the gas
from the mains.
According to this invention the use of mercury is dispensed with, glycerine or
machinery oil being employed instead. Moreover leakage is entirely prevented,
and the interior of the apparatus is rendered accessible by the employment of a
simple fastening device, without the employment of packing material for making a
tight joint for the closure of the cover.
The movements of the governing device are suitably transmitted by means of
levers and the depression of a float or bell.
In a good gas pressure governor it is of the greatest importance in the case of
variations in the gas pressure or disturbances in the state of equilibrium between
the pressure of the gas in the interior of the governor and the weight of the
rocking parts, that the governing action shall not be affected by sudden rising or
depression (jumping) of the float or bell, whereby flickering of the gas jets would
be produced, but that the rising or depression of the bell or of the pressure-
reducing valve dependent thereon, shall take place gradually and without the
transition being noticeable in the gas jets.
These objects are effected according to this invention by the interposition of air-
buffers or air cushions partly above and below the bell, from which the compressed
air can escape but slowly, whereby the speed of ascent or descent of the bell is
affected.
In the accompanying drawings,
Fig. 1 is a cross section through the improved governor.
Fig. 2 is a section on the line of Fig. 1.
Fig. 3 is a cross section through a governor constructed according to this inven-
tion for use for motors.
Fig. 4 is a section on the line y y of Fig. 3.
Fig. 5 is a part section at a different angle of the governor shewn in Fig. 3.
The gas cuters from the gas main at a and leaves the governor at b at the other
side of a partition a' after it has been reduced to the desired pressure. The
reducing valve and the bell e fixed on the valve spindle, balance the gas pressure
in the interior of the governor. The bell dips at d in a liquid, water, glycerine,
thin machinery oil, etc. to prevent escape of gas to the exterior. By loading
the bell with weights e, the pressure of the gas passing out can be increased or
diminished at will.
The cover of the governor for illuminating purposes (Figs. 1 and 2) has a
rim g of such length as to dip into the liquid which seals the bell c, and which
thus forms a hydraulic joint or closure. The air enclosed between the cover
and bell c cannot escape in any other way than through an opening in the cover f
which is closed by a tapering screw. Instead of this tapering screw however,
a flap or cock may be employed. By increasing or diminishing the area of passage
at 1, a braking or cushioning action can be obtained which influences the speed of
lift of the bell c.
Whilst the braking action for the amount of lift of the bell c for the arrange-
↑ Price 871

page_text: ment of the gas governor for illuminating plant, (Figs. 1 and 2), is sufficient for a
good governing action, the employment of the governor with gas motors (Figs. 3,4
and 5) necessitates a brake which shall also act against the descent of the bell, and
the following arrangement is provided for this purpose.
The case or body of the bell c is made with double walls and i. These walls
enclose an annular hollow space which is closed at top by the bell, and at bottom
by the sealing liquid. At a suitable place within this hollow space there is -pro-
vided a narrow air pipe k, Fig. 5, which extends nearly up to the roof of the bell
and through the bottom wall of the governor. By this means communication is
effected between the inner hollow space and the outer atmosphere.
In the case of an increased consumption of gas, for example on suction of the
gas motor piston, the bell has the tendency to descend in order to admit more gas,
whereby the air in the annular hollow space is compressed and can only escape
through the pipe k.
The duration of the downward movement of the bell is dependent solely on the
aforesaid quicker or slower escape of air.
By contracting the outflow area of the pipe k, the speed of descent of the bell
can be reduced as desired.
It may furthermore be briefly stated that the gas pressure governor when
employed in connection with motors, can be used as a feed valve for the purpose of
producing the uniform gas pressure necessary for the proper working of the motor
and also for entirely obviating all flickering or jumping of gas jets which are
burning either directly at the motor or in the vicinity thereof.
Dated this 13th day of January 1892.
A. ALTMANN,
By L. W., per F. B.
COMPLETE SPECIFICATION.
Improvements in Gas Pressure Governors or Regulators.
I, ADOLPH ALTMANN of 684 Ackerstrasse, Berlin, Germany, 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:-
This invention relates to improvements in gas governors or regulators (hereiu-
after referred to as governors) which act in an automatic manner to ensure uniform
pressure of the gas passing therefrom notwithstanding fluctuations in the pressure
of the gas supplied from the mains.
In a gas governor according to this invention, the use of mercury is dispensed
with, glycerine or machinery oil being employed instead. Moreover leakage is
entirely prevented, and the interior of the apparatus is rendered accessible by the
employment of a simple fastening device, without the employment of packing
material, for securing the cover with a tight joint.
The above mentioned governing action is effected by raising and depressing a
bell or float.
In a gas governor it is of the greatest importance in the event of variations in
the gas pressure or, disturbances in the state of equilibrium between the pressure
of the gas in the interior of the governor and the weight of the rocking parts, that
the governing action shall not be so affected by sudden rise or fall of the float or
bell as to produce flickering of the gas jets, but that the rising or falling of the bell
or of the pressure reducing valve dependent thereon, shall take place gradually and
without the transition being noticeable in the gas jets.
These objects are effected according to this invention by the use of an air buffer
or air cushion arranged above or partly above and partly below the bell from which

page_text: the compressed air can only escape slowly so that the speed of ascent or descent of
the bell is regulated.
Referring to the drawings left with my Provisional Specification,
Fig. 1 is a vertical section through a governor constructed according to this
invention suitable for regulating the pressure of gas intended for illuminating
purposes; and
Fig. 2 is a horizontal section thereof on the line za of Fig. 1.
Fig. 3 is a vertical section through a governor constructed according to
this invention suitable for regulating the pressure of gas intended for use in a gas
motor.
Fig. 4 is a horizontal section on the line
of Fig. 3.
Fig. 5 is a part vertical section of the governor shown in Fig. 3 but taken in a
different vertical plane.
The gas enters from the gas main at a and leaves the governor at b at the other
side of a partition a' after it has been reduced to the desired pressure. The
reducing valve and the bell c fixed on the valve spindle, balance the gas pressure
in the interior of the governor in a manner well understood. The bell dips at d
into a liquid as for example water, glycerine, thin machinery oil, etc., to prevent
escape of gas to the exterior. By loading the bell with weights e, the pressure of
the gas passing out can be increased or diminished at will.
The cover of the governor for illuminating purposes (Figs. 1 and 2) has a
ring of such length as to dip into the liquid which seals the bell c, and which thus
forms a hydraulic joint or closure. The air thus enclosed between the cover ƒ and
the bell cannot escape in any other way than through an opening in the cover f
formed by a screw which has a wedge shaped recess; instead of this tapering
screw, however, a flap valve or cock may be employed. By increasing or
diminishing the area of the opening by raising or depressing the screw, a
braking or cushioning action can be obtained which influences the speed of lift of
the bell c.
Whilst the braking action for the amount of lift of the belle for the arrangement
of the gas governor for illuminating plant, (Figs. 1 and 2), is sufficient for a good
governing action, the employment of the governor with gas motors (Figs. 34
and 5) necessitates a brake which shall also act against the descent of the bell.
For this purpose the following arrangement is provided.
The case or body of the bell c is made with double walls h and i. These walls
form an annular space which is closed at the top by the bell, and at the bottom by
the sealing liquid. At a suitable place within this space there is provided an air
pipe of small diameter Fig. 5 which extends upward nearly to the roof of the
bell and downward through the bottom wall of the governor. By this means
communication is effected between the inner annular space and the outer
atmosphere.
gas
In the case of an increased consumption of gas, as for example when the
motor piston is making its suction stroke, the bell has a tendency to descend so that
the air in the annular space is compressed and can only escape through the pipe k.
The duration of the downward movement of the bell is dependent solely on the
aforesaid quicker or slower escape of air.
By contracting the outflow area of the pipe, the speed of descent of the bell
can be reduced as desired.
It may furthermore be briefly stated that the gas pressure governor when
employed in connection with motors, can be used as a feed valve for the purpose of
producing the uniform pressure of gas necessary for the proper working of the
motor, and also for entirely obviating all flickering or jumping of gas jets which
are burning either directly at the motor or in the vicinity thereof.
The cover turns in a hinge formed on the casing and is fastened at the opposite
side by a lock which bears against a projection or shoulder of the casing as shown
in the drawings.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what 1
claim is :-
1. A gas governor constructed with a float or bell c carrying a pressure reducing
valve, and arranged to dip into a scaling liquid, and with a perforated cover that
also dips into said liquid, and forms with said bell an air space, the arrangement
being such that the air within said space forms an air cushion that serves to
regulate the movements of the bell c substantially in the manner hereinbefore
described with reference to Figs. 1 and 2 of the drawings.
2. The modified construction of gas governor hereinbefore described with
reference to and shown in Figs. 3, 4 and 5, according to which the bell c is provided
with walls hi forming an annular air space that is closed at top and bottom and
communicates with the external atmosphere by a small pipe k for the purposes
-specified.
Dated this 27th day of February 1892
ADOLPH ALTMANN,
By L. W., per F. B.