Improvements in Gas Lamps.
Year: 1891

page_text: Date of Application, 6th Oct., 1891
l'omplete Specification Left, 6th Ju y, 1892-Accepted, 6th Aug., 1891
PROVISIONAL SPECIFICATION.
Improvements in Gas Lamps.
I WILLIAM SIMEON WRIGHT of Vincent Works, Regency Street, in the City
of Westminster, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates chiefly to improvements in street lamps, the object being.
to minimise the loss of gas due to leakage of the burner tap.
It has been found that taps which are practically sound when the supply of the gas
is at a low pressure, show considerable leakage under a high pressure, and the
wearing of the plug tends to increase this leakage.
In order to avoid this defect, and to simplify the construction of the parts by
which the supply of gas to the burner is controlled, I have designed the arrange-
ment which I will now describe :-
Screwed to the supply pipe which enters the lantern, is a flanged collar, to which
is bolted a flanged bell-shaped casting having at its upper part a seat for the plug
of the gas tap, and a central neck to receive the burner.
Situate within this bell shaped casting, is a gas regulator of any suitable
construction, but preferably that in which a floating disc is used for carrying a
slide valve, which, as the pressure of the gas is increased, contracts the escape
opening, and thereby limits the supply of gas to the burner.
This class of gas regulator consists of a cylinder of two diameters, open at
bottom and closed at top, and screwed to the flanged collar. An opening is made
in the side of the smaller cylinder for the passage of the gas. The floating disc is
made of steatite, and slides in the larger diameter of the cylinder, like a piston,
under the varying pressure of the gas. This disc carries an open tube which forms
a gas passage, and fits the smaller diameter of the cylinder, its length being such
that it just reaches the side vent when the gas is at a normal pressure. As the
pressure increases and the disc rises, the vent is contracted, and the supply of gas
is, as is well understood, correspondingly reduced. Thus, the maximum of escape
is controlled by the pressure of the gas itself.
It is the action of the gas regulator which is utilised in my arrangement of gas
supply, for whatever may be the leakage of the gas cock, whether due to wear or
indifferent fitting, no rate of leakage can take place that will exceed the regulated
quantity of gas designed for consumption at the burner, whereas instances have
been known of waste sufficient to burn up the lantern itself.
It will be understood that my invention is chiefly applicable to outdoor lighting,
as the leakage above referred to would not be tolerated within doors.
Dated this 6th day of October 1891.
NEWTON & SON,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Gas Lamps.
I WILLIAM SIMEON WRIGHT, of Vincent Works, Regency Street, in the City
of Westminster, 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 street lamps, the object being to
minimize the loss of gas due to leakage of the burner tap.

page_text: In the accompanying drawing, I have shown my invention in sectional
elevation.
A is a gas governor, B is the lever tap, and C is the burner, the lever tap B
being placed between the governor A and the burner C.
The governor may be of any type, but that shown in the drawing is of a steatite
float type, the construction of which is now well known.
Cast in one with the governor case and the burner "cone," as it is called, is a
conical barrel for a conical plug of the lever tap B. Round the smaller end of the
conical plug, a groove is formed to receive the point of a screw inserted from the
outside of the barrel, to hold the plug in place.
B¹ is the lever, which is operated to turn the gas on and off by the torch of the
lamp-lighter.
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 arrangement of gas burner for street lamps as herein shown and
described.
2. In a gas burner for street lamps provided with a governor, the application, on
the outlet side of the governor, of a lever tap for the purpose set forth.
Dated this 6th day of July 1892.
NEWTON & SON,
Agents for the Applicant.