IMPROVED METHOD OF AND APPARATUS FOR ADJUSTING THE WICK IN LAMPS
Year: 1884

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I GEORGE CHARMAN of N° 5 Chancery Lane in the County of Middlesex do
hereby declare the nature of the said Invention for "IMPROVED METHOD OF AND
APPARATUS FOR ADJUSTING THE WICK IN LAMPS," to be as follows:- :
This Invention relates to lamps, having circular wick holders, and my improve-
ments have reference to the apparatus for raising or lowering the wick.
The method. I, adopt is to cut a double spiral groove or slot in the tubular holder
over which I place a short, tube or collar to prevent leakage of oil. This tube is
provided with a circular flange having a milled edge. A metal pin is, inserted
through the outer tube which enters one of the spiral slots, passes through the wick
and out at the opposite side through the corresponding portion of the other slot.
The wick can be raised, or lowered by turning the outer tube which causes the pin
to ascend or descend within the spiral slots.
T
When the pin reaches the upper extremity of the slots it is withdrawn, the
outer tube pushed down and the pin again inserted.
This apparatus is much more effective than the ordinary toothed wheel which
besides being uncertain in its action, opposes the introduction of the wick in the
first instance.
Dotal thin 4th dose of Mach 1001.

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I GEORGE CHARMAN, of No 5 Chancery Lane in the County of Middlesex, do
hereby declare the nature of the said Invention for IMPROVED METHOD OF AND
APPARATUS FOR ADJUSTING THE WICK IN LAMPS 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 the wick holders of oil lamps, and
relates to apparatus for raising and lowering the wick.
Instead of the ordinary, toothed, ratchet wheel, which is both ineffective and
obstructs the passage of the wick when replenishing the lamp, I employ a pin
passing through two spiral or helical slots in the tubular burner, such pin being
supported by lugs attached to a milled flange fixed to a sleeve which is fitted over
the inner tube, to prevent the oil from escaping.
When the lamp is first trimmed, the pin is inserted through the wick at the
lowest portion of the slots, and as the wick wastes away, the flange is turned
round until the pin has travelled to the top of the spirals, when it is withdrawn,
the sleeve and flange lowered and the pin again inserted, as at the commencement.
And in order, that my Invention may be more fully understood, I hereto annex
a sheet of Drawings illustrative thereof.
Figure 1 represents an elevation of my, improved wick holder, and Figure 2
a plan view thereof.
Ais the tubular holder in which I cut a double spiral or helical slot B. Over
the tube A is fitted a tube or sleeve C midway of which is a milled flange D
carrying two perforated studs a for the purpose of supporting the pin E which
passes centrally through the 'wick holder or through the two slots therein.
To trim the lamp, the pin E is withdrawn and the wick inserted, the pin is then
passed through the wick at the point where the spiral grooves commence. As the
wick turns, the sleeve C is turned round in the direction of the arrow, thus causing
the pin to ascend in the grooves and thereby raise the wick.
When the pin reaches the top of the grooves, it is withdrawn and again inserted
at the lowest point. "
+
t.f
Having thus particularly described and ascertained the nature of my said
Invention; and in what manner the same is or may be used or carried into practise,
I would observe in conclusion that what I claim as my Invention, is :-
The improved method of and apparatus for adjusting the wick in lamps,
substantially as shewn and described.
Dated this 4th day of December 1884,
O.W
770
HUGHES & SON,
5, Chancery Lane, London, W.C.,
Agents for the Petitioner.