Improvements in Central Air Draught Oil Lamps and in Extinguishers therefor.
Year: 1892

page_text: Date of Application, 8th Dec., 1892
Complete Specification Left, 9th May, 1893-Accepted, 24th June, 1893
PROVISIONAL SPECIFICATION.
Improvements in Central Air Draught Oil Lamps and in
Extinguishers therefor.
I HENRY CLAY WEBB of 74 Church Road Croydon in the County of Surrey,
Grocer do hereby declare the nature of this invention to be as follows:-
This invention, is an extinguisher for central air draught oil lamps, and is
constructed in the following manner.
A metal tube is made to fit over and telescope the inner tube of the lamp next
the wick. A similar tube is made to fit over the outside of the wick and telescope
the inside of the outer tube of the lamp.
These two movable tubes are connected at the bottom by a catch under the
wick and constructed to easily unfasten to remove the outer tube for rewicking.
The movable tubes are made flush with the stationary lamp tubes at the top. A
small metal rod is run at an angle through the bottom of the burner and a lever
attached both inside and outside the burner. A rod is attached by pinion to the
end of lever inside the burner and carried part of the way down the reservoir of
the lamp where it is again attached to the movable outer tube by pinion and catch
in such a manner that it may be easily removed for rewicking. When the outside
lever is pressed down both tubes rise together next to and on the inside and outside
of the round wick up to the spreader or deflector which they strike on the under
side and form an air tight box over the wick and instantly extinguish the flame.
Dated this 7th dor of Desember 1905
HENRY CLAY WEBB.
COMPLETE SPECIFICATION.
Improvements in Central Air Draught Oil Lamps and in
Extinguishers therefor.
I, HENRY CLAY WEBB, of 74, Church Road, Croydon, in the County of
Surrey, Grocer, 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 :-
My invention relates to central-air-draught lamps and the objects of my inven-
tion are to provide an improved extinguisher for such lamps.
My improved extinguisher comprises two concentric tubes between the ordinary
central draught-tube and the outer wick-tube, the said concentric extinguisher
tubes having the wick arranged between them and being adapted to slide
telescopically relatively with the wick. The extinguisher is operated by raising
the concentric tubes above the level of the wick.
To enable my invention to be fully understood I will describe the same by
reference to the accompanying drawings, in which :-
:--
Figure 1 is a sectional elevation of a central-draught lamp having my improve-
ments applied thereto; and,
Figure 2 is a sectional elevation of the wick-tubes and the connected parts
removed from the lamp reservoir and looking in the direction of the arrow
Figure 1.
Figures 3 to 7 are views of details hereinafter described.
a is the lamp reservoir, 6 the usual central air-tube, and c the outer or wick-tube
between which and the air-tube the wick slides, the said wick-tube e being carriel
upon the collar e of the burner in the usual manner as will be readily understood
by reference to the drawings.

page_text: 9 are the concentric tubes forming the extinguisher, the former being shewn
in elevation and plan in Figures 3 and 4 respectively and the latter in elevation
and plan in Figures 5 and 6 respectively. The tube is of such a diameter that it
will fit over but slide freely upon the central draught-tube b, and the tube g is of
such a diameter that it will fit but slide freely within the wick-tube c.
These tubes, when the lamp is burning occupy a position with their upper
edges level with the upper edges of the ordinary tubes b, c, or below the same as
shewn in Figure 1, so that they do not interfere with the wick which can be raised
and lowered by the usual means, such, for instance, as the screw engaging with a
nut attached to a collar fastened around the wick. When the flame is to be
extinguished the concentric tubes f, g are simultaneously raised, for instance as
shewn in Figure 1, where they are represented in dotted lines as abutting against
the underside of the usual flame-spreader k.
In order that the two tubes f, g shall move simultaneously they are connected
together by any suitable means. As shewn in the drawings I have represented the
inner tube fas provided with a flange to which is hinged a plate m having in it an
opening designed to fit over a correspondingly shaped turn-buckle o on the tube g
so that when the said turn-buckle is turned over the hinge-plate m, as shewn in
Figures 1 and 2, the two tubes will be firmly connected.
The object of cutting away a portion of the tube g, as shewn, is to allow the
free up and down movement of the collar j surrounding the wick together with the
nut connected thereto.
is the lever by means of which the extinguisher is moved down within
the tubes b and c when it is desired to light the lamp, the said lever, as shewn,
being attached to one end of a spindle 7 carried in a suitable bearing upon the
collar e of the burner and having secured to its inner end a lever connected by a
links to a stud t upon the tube y.
In order that the extinguisher may be removed for the purpose of introducing a
new wick, the links is detachably connected with the stud t, for instance, by making
the hole with which the stud engages in the link as large as the head of the said
stud, as shewn most clearly in Figure 7 (which is an elevation of the link s
detached) and pivotting to the said link a plate u, one end of which, when the
link s is engaged with the stud t, is adapted to enter behind the head of the stud
to prevent the withdrawal of the same from the link, as shewn most clearly in
Figures 1 and 2.
Although I have described my invention as applied to a "central-draught lamp
it is to be understood that it is also applicable to other circular-wick lamps.
"
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. An extinguisher for a round wick-lamp consisting of two concentric tubes,
one of which fits around the outside of the central draught-tube and the other
inside the outer wick-tube, the said concentric extinguisher tubes being connected
together so that they will move in unison and telescopically against the inside and
outside of the wick, substantially as described.
2. A central-draught lamp provided with an extinguisher consisting of two
concentric tubes sliding between the ordinary wick-tubes, substantially as
described.
3. The manufacture and use of extinguishers for lamps, substantially as herein-
before described and illustrated in the accompanying drawings.
Dated the 9th day of May 1893.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant,