An Apparatus for Lighting and Extinguishing Gas Lamps.
Year: 1896

page_text: Date of Application, 8th Oct., 1896
Complete Specification Left, 25th Nov., 1896-Accepted, 13th Feb., 1897
PROVISIONAL SPECIFICATION.
An Apparatus for Lighting and Extinguishing Gas Lamps.
I EDMUND CHIVERTON of No. 121 Fawcett Road, Southsea, Portsmouth in
the County of Hants, Main Surveyor do bereby declare the nature of this invention
to be as follows:-
This invention consists of a cylindrical vessel about two and three quarters of
an inch in diameter, divided into two chambers. It may either be fixed inside or
outside of lamp connected to the street mains or other connections. The automatic
action is obtained from the pressure of gas acting on a diaphragm of leather or
other material, which is placed in the first or inlet chamber, and is connected to a
single valve & weight, which I term the day pressure weight, the inflation of this
diaphragm & its consequent motion brings it into connection with and puts in
action a second diaphragm fixed in the second chamber, to this second diaphragm
is attached a double acting valve. The required pressure being supplied to the
first chamber, the first diaphragm with its valve lifts thereby bringing into action the
second diaphragm with its double valve, and both diaphragms and their valves act
as one until the ordinary night pressure is obtained after which they act free and
independently of each other.
During the daytime one part of the double acting valve attached to the second
diaphragm remains open to admit gas to a small pilot light. When the lighting
pressure is applied and the valves are lifted this part of the double acting valve
is closed thereby extinguishing the pilot light after it has lighted the lamp burner.
Upon the extinguishing pressure being applied in the morning the double acting
valve lowers thereby putting out the lamp burner and at the same time lighting
the pilot burner but the two burners are never alight at the same time.
Dated this Seventh day of October 1896.
An Apparatus for Lighting and Extinguishing Gas Lamps.
I, EDMUND CHIVERTON 121 Fawcett Road Southsea, 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 consists of a cylindrical vessel about two and three quarters of
an inch in diameter, divided into two chambers. It may either be placed inside or
outside of lamp, connected to the street mains or other connection. The automatic
action is obtained from the pressure of gas acting on a diaphragm of leather or
other material which is placed in the first or inlet chamber and is connected to a
disc and weight which I term the day pressure weight; the compression of this
diaphragm and its consequent motion brings it into connection with and puts in
action a second diaphragm fixed in the second chamber; & to this secoul

page_text: diaphragm is attached a double acting valve. The required pressure being
supplied to the first chamber the first diaphragm with its disc & weight lifts
thereby bringing into action the second diaphragm with its double valve and both
diaphragms and the valves act as one until the ordinary night pressure is obtained
after which they act free and independently of each other.
During the daytime one part of the double acting valve attached to the second
diaphragm remains open to admit gas to a small pilot light; when the lighting
pressure is applied and the valves are lifted this part of the double acting valve is
closed thereby extinguishing the pilot light after it has lighted the lamp burner.
Upon the extinguishing pressure being applied in the morning the double acting
valve lowers, thereby putting out the lamp burner and at the same time lighting
the pilot burner, but the two burners are never alight at the same time.
In order that my invention may be fully understood I will now refer to the
annexed drawings in which
Figure 1. is a sectional side elevation of my invention.
Figure 2. sectional plan view of same.
The gas supply enters at a and at the pressure necessary to maintain the pilot
light & burning passes through the valve b to the pilot burner b' in the direction
of the arrows 1. Upon increasing the gas pressure the diaphragm c is compressed,
and through the medium of the disc d and rod e which is adjustably attached to,
the diaphragm c by means of the nuts and g which engage upon the rod e the
valve is raised which action closes the aperture and opens the aperture i and
the gas then enters the chamber j and passes thence through an outlet k shown by
the dotted lines to the main buruer l. This valve 6 is attached adjustably to the
diaphragm m, by means of the lock nuts n and o which engage upon the screwed
rod p which carries the valve 6. The valve b and diaphragms m and c are so
weighted and adjusted that the gas pressure when the main burner is alight is
sufficient to maintain the valve 6 in the lighting position for the main burner 1.
The disc d and diaphragm o are, after the main burner has been lighted at liberty.
to return to their initial position. The diaphragms m and c are made of any
suitable material such as leather and the elasticity of same is so arranged and the
weight of the valve and parts that the required differences of gas pressure open or
close the outlets i and h. When it is desired to extinguish the main burner it is
only necessary to reduce the pressure so as to allow the valve b to fall and close the
outlet i, which also opens the outlet h, and allows the pilot light 61 to be ignited.
The casing or body 9 may be of any suitable material and the various sections or
parts of same may be, attached together by means of screws or other suitable
means of connection. The diaphragms m and c are secured to the parts and s
by any suitable means such as by, binding by the cords t.
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 :-
1. The combined construction and arrangement of the various parts substantially
as described and illustrated.
2. In gas lighting and extinguishing apparatus of the class herein described, two
flexible diaphragms, one of which carries an adjustable valve which opens and
closes apertures or ports communicating with the pilot light & main burner being
operated upon by a disc or buffer adjustably carried by the other diaphragm which
is acted upon by an increase of gas pressure.
Dated this 24th day of November 1896.
E. EATON,
Agent for Applicant.