An Improved Gas Regulator for Gas Motor Engines.
Year: 1891

page_text: Date of Application, 20th Feb., 1891
Complete Specification Left. 18th Nov. 1891-Accepted. 19th Dec.. 1891
PROVISIONAL SPECIFICATION.
An Improved Gas Regulator for Gas Motor Engines.
I JOHN FIELDING of Somerset Lawn in the City and County of Gloucester,
Engineer do hereby declare the nature of this invention to be as follows:-
When a gas motor engine receives its supply of gas from the same main which
supplies gas jets, it is necessary to provide means for preventing the pulsation
caused by the intermittent demand of the engine, and according to my invention
an apparatus for this purpose consists of two or more chambers fitted with flexible
diaphragms through which the gas is led to the engine, suitable regulating valves or
plugs being provided in the passages leading from one chamber to the other, the
areas of such passages gradually increasing from the inlet to the outlet.
Preferably such an apparatus consists of a short iron cylinder open at both ends,
with a division plate either cast in or fixed somewhat nearer to one end than the
other, the ends are closed by elastic rubber sheets or diaphragms secured by rings
and bolts. The cylinder thus forms two separate chambers, one having greater
capacity than the other, the gas supply from main is led into the smaller chamber
and the engine supply is taken from the larger, a regulated passage connects the
two chambers, its area being so reduced that a constant flow is required to supply
sufficient gas for the engine. As however the engine only draws its supply
intermittently the larger chamber acts as a reservoir, whilst the flexible diaphragm
in the smaller chamber maintains an equable pressure in the main.
The efficiency will of course be increased by the addition of other chambers and
diaphragms.
Dated this 10th 1 C W
1001
JOHN FIELDING.
COMPLETE SPECIFICATION.
An Improved Gas Regulator for Gas Motor Engines.
I, JOHN FIELDING, of Somerset Lawn in the City and County of Gloucester
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 :--
When a gas motor engine receives its supply of gas from the same main which
supplies gas jets, it is necessary to provide means for preventing the pulsation caused
by the intermittent demand of the engine, and according to my invention an
apparatus for this purpose consists of two or more chambers fitted with flexible
diaphragms through which the gas is led to the engine, suitable regulating valves
or plugs being provided in the passages leading from one chamber to the other, the
areas of such passages gradually increasing from the inlet to the outlet.
Preferably such an apparatus consists of a short iron cylinder open at both ends,
with a division plate either cast in or fixed somewhat nearer to one end than the
other, the ends are closed by elastic rubber sheets or diaphragms secured by rings
and bolts. The cylinder thus forms two separate chambers one having greater
capacity than the other the gas supply from main is led into the smaller chamber
and the engine supply is taken from the larger, a regulated passage connects the
two chambers, its area being so reduced that a constant flow is required to supply
sufficient gas for the engine. As however the engine only draws its supply
intermittently the larger chamber acts as a reservoir, whilst the flexible diaphragm
in the smaller chamber maintains an equable pressure in the main.

page_text: The efficiency will of course be increased by the addition of other chambers and
diaphragms.
In the accompanying drawing Fig. 1 is a diametrical section and Fig. 2 an end
view of the improved gas regulator A being the inlet chamber connected by
branch a with the supply pipe. B is the chamber communicating with the engine
gas supply pipe by branch b. C is the regulated passage between A. & B and an
adjusting screw. D. D. are the flexible diaphragms.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is
ر
The regulating apparatus, consisting of two or more chambers provided with
flexible diaphragms and regulated connecting passage or aperture operating sub-
stantially as and for the purposes herein set forth and illustrated in the accompanying
drawing.
JOHN FIELDING.