IMPROVEMENTS IN APPARATUS FOR REGULATING THE PRESSURE OF GAS
Year: 1885

page_text: I, JOSEPH SHAW of Albert Works, Lockwood, near Huddersfield, Yorkshire,
Brass Finisher, do hereby declare the nature of my invention for "IMPROVEMENTS
IN APPARATUS FOR REGULATING THE PRESSURE OF GAS," to be as follows:-
My invention relates to self-acting gas regulators consisting of a conical shaped
chamber divided by a diaphragm, and having a valve which is closed by the pressure
of gas.
My improvements consist in placing at a position below the valve a perforated
washer or division plate, the said perforations being conical, having the larger ends
opposite the valve so that as gas enters the inlet pipe and passes through the
conical perforations, the gas is allowed to spread, and more freely enter the valve.
My invention also relates to the inlet union which is fixed to gas regulators, and
consists in making the said union taper and in arranging that the inlet of such
union is of the same diameter as the valve, so that there is no undue pressure upon
the valve, as is the case when the inlet is much larger.

page_text: 1
Improvements in Apparatus for Regulating the Pressure of Gas.
I, JOSEPH SHAW, of Albert Works, Lockwood, near Huddersfield, Yorkshire,
Brass Finisher do hereby declare the nature of my invention for "IMPROVEMENTS
IN APPARATUS FOR REGULATING THE PRESSURE OF GAS," and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement :-
My invention relates to self-acting gas regulators, consisting of a conical shaped
chamber divided by a diaphragm, and having a valve which is closed by the pressure
of gas.
My improvements consist in placing at a position below the valve, a perforated
washer or division plate, the said perforations being conical, having the larger ends
opposite the valve, so that as gas enters the inlet pipe and passes through the
conical perforations, the gas is allowed to spread, and more freely enter the valve.
My invention also relates to the inlet union which is fixed to gas regulators, and
consists in making the said union taper, and in arranging that the inlet of such
union is of the same diameter as the valve, so that there is no undue pressure upon
the valve, as is the case when the inlet is much larger.
Such being the nature and object of my invention I will now proceed to describe
the same more fully, and for that purpose make reference to the accompanying
sheet of drawings, which is section of a self-acting gas regulator or governor having
my improvements applied thereto. A is the outer casing or shell of the regulator,
B the inlet for gas, and C the outlet or the part to which the gas pipe having the
burner is attached. The governor is divided by a diaphragm at D which is pre-
ferably composed of leather, and E is a valve connected to the bottom of the
vertical rod F passing through the diaphragm, such rod being secured to the
diaphragm by nuts a and b. The inlet union is shewn at G, the top of which is
provided with a perforated washer H, the said perforations being made conical or
taper, having the larger openings uppermost, so that as gas enters the inlet pipe
and passes through the conical perforations, the gas will expand and spread, and
more freely pass through the valve. I also arrange that the bottom of the inlet
union at c is the same area as the valve so that undue pressure thereon is avoided.
In order to counterbalance the valve against the pressure of gas, I place weight
upon the top of the vertical rod F; and in order to prevent the leather diaphragm
from lowering unequally when the pressure of gas is lessened, I place a metal
diaphragm J upon the leather diaphragm, whereby it rises and falls equally.
The action of the apparatus
as follows.
When gas enters at B and fills the chamber I and the length of piping between
that part and the burner, the pressure therein will lift the diaphragm and close the
valve so that the pressure below is cut off, but as the gas is consumed and the pres-
sure in the chamber I becomes less the diaphragm will fall as seen in dotted lines
and gas from below will enter, but this is so gradually and evenly done that
practically the pressure is uniform throughout the day.

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 :-
Firstly. In a self-acting gas governor, the perforated washer H having conical
or taper holes for purposes set forth.
Secondly. The formation of the union G having the inlet the same area as the
valve substantially as set forth.
Code
Thirdly. The combination of metal diaphragm J with the leather diaphragm D
in manner as set forth.