Improvements relating to the Compressing of Gases for various Purposes in the Arts.
Year: 1899

page_text: Date of Application, 20th June, 1899
Complete Specification Left, 19th Apr., 1900-Accepted, 19th May, 1900
PROVISIONAL SPECIFICATION.
Improvements relating to the Compressing of Gases for various
Purposes in the Arts.
I, WILLIAM THOMAS SUGG, of Vincent Works, Regency Street, Westminster,
S.W., Engineer, do hereby declare the nature of this invention to be as follows:-
In incandescent gas lighting, it is well known that the heating medium
(a mixture of gas and air) must be under a certain amount of pressure, to,
produce any result at all, and that the greater the pressure within reasonable
limits, the better will be the light.
In places where the distribution pressure of the gas is not sufficient, it has
been proposed to increase the pressure in an installation by mechanical means,
such means being operated by water or other suitable power.
In such apparatus it has been found desirable to have a cut-off apparatus,
to cut off the supply of the motor fluid when the pressure in the apparatus
exceeds the required pressure for the gas lighting.
It has also been found that the light fluctuates, 1st, when the pressure-
increasing apparatus is changing its direction, and 2nd, because the cut-off is apt
to act too rapidly.
Now the object of the present invention is to combine a cut-off with means
whereby this fluctuation will be obviated.
To this end, the apparatus consists of a gas receiver of suitable capacity,
provided at the inlet with a suitable valve to prevent back pressure on the pump.
This receiver is provided with a casing, open to the receiver, and containing
a small mercury-sealed gas bell.
To this bell is secured a rod, on which weights can be mounted, and to
this rod one arm of a lever is secured in any convenient manner, the other arm
being connected with the water-cock by a link or otherwise.
As the pressure increases in the receiver above that of the weight, the bell
rises, and rocks the lever to shut off the water-cock.
The receiver is in connection, by a suitable pipe, with the service pipes in
the house.
To obviate the fluctuations in the pressure, I provide, in the receiver, what I
may term a flexible piston, which is capable of being depressed, when the
pressure exceeds a given amount, and at the moment the change of direction
is taking place in the pump the piston will act as a reserve force, to keep
up the pressure.
This flexible piston may consist of an accordión-pleat reservoir, surrounded by
a helical spring, and attached at top, by another spring, to a bar or stay
in the receiver.
These springs, which may be regulated, will act to raise the piston when it has
been forced down by the pressure of the gas, and, at the desired moment, to
keep up the pressure. The flexible reservoir is open to the atmosphere.
Dated this 20th day of June 1899.

page_text: Improvements relating to the Compressing of Gases for various
Purposes in the Arts.
I, WILLIAM THOMAS SUGG, of Vincent Works, Regency Street, Westminster,
S.W., 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:-
In incandescent gas lighting, it is well known that the heating medium
(a mixture of gas and air) must be under a certain amount of pressure, to
produce any result at all, and that the greater the pressure within reasonable
limits, the better will be the light.
In places where the distribution pressure of the gas is not sufficient, it has
been proposed to increase the pressure in an installation by mechanical means,
such means being operated by water or other suitable power.
In such apparatus it has been found desirable to have a cut-off apparatus,
to cut off the supply of the motor fluid when the pressure in the apparatus
exceeds that required for the gas burner.
It has also been found that the light fluctuates,-1st, when the pressure-
increasing apparatus is changing its direction; and 2nd, when the cut-off acts
too rapidly which it is liable to do.
Now the object of the present invention is to combine a cut-off with means
whereby this fluctuation will be prevented.
In the accompanying drawing I have shewn, in elevation, partly in section,
an apparatus embodying my improvements.
A is a water or other motor, and B is a gas compressor of any approved type.
C is a gas pipe leading from the compressor to a receiver D. d is a valve for
preventing back pressure against the compressor. c is a gas service pipe leading
from the receiver D. On the summit of the receiver D is arranged the automatic
cut-off for the motor. The cut-off preferably consists of a gas bell e, dipping.
into a mercury well el, and supporting a vertical rod ea, adapted to operate a
lever a connected with the supply valve of the motor A.
E is a casing enclosing the gas bell e and other parts connected therewith, all
of which are described in the Complete Specification filed in respect of Letters
Patent No. 21,144 of 1898.
The action of the automatic cut-off, as is well understood, depends on the rise
and fall of the bell e, weighted to the desired extent, according to the pressure
within the receiver D. Co-operating with this cut-off, is what I propose to term a
flexible piston F, which is capable of collapsing under undue pressure of gas,
and of expanding again when the pressure is reduced.
This flexible piston F is situated within the receiver D, and is attached to
the bottom thereof, through which there is communication with the air to the
interior of the piston. The piston is supported, either from above or below, by
an adjustable tension spring f, attached, in the former case, to a fixed cross bar fi,
and is provided circumferentially with a coiled spring f, as shown, The exact
form of this piston may however, be considerably varied, according to circum-
stances, and may consist of an accordion pleated bellows or other device.
The employment of the flexible piston F has the effect of neutralizing the
fluctuations which arise from the action of the compressor, by relieving the cut-off
from the shocks and irregularities incidental thereto. Regularity of pressure
in the receiver is thus maintained, and a maximum efficiency as regards gas
pressure is assured.

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:-
-
The employment, in conjunction with an automatic cut-off for gas-compressing
apparatus, of a receiver containing a flexible device adapted to relieve the
cut-off from the shocks arising from the action of the compressor, and to assist
in maintaining regularity of pressure, substantially as above described.
Dated this 10th
NEWTON & SON,
Agents for the Applicant.