Improvements in or relating to Miners' Lamps.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in or relating to Miners' Lamps.
We, JOHN NAYLOR, of the Wiend, Wigan, in the County of Lancaster, Brass
Founder, JAMES ROBY, of 1, Gaskells Yard, Millgate, Wigan, aforesaid, Lamp-
man, and WILLIAM ABBOTT, of 1, Sovereign Road, Wigan, aforesaid, Traveller,
do hereby declare the nature of this invention to be as follows:-
This invention relates to miners' lamps which can be easily regulated and
give out high illuminating power, and it has for its object to provide certain
improvements on the invention set forth in the Specification of the prior Patent
No. 2639 of 1897. In the former patent aforesaid the burner tubes were
permanently fixed in the lamp bottom or oil reservoir so that they could not be
taken out, and to renew the bottom or permanent wicks, it was therefore necessary
to unsolder the bottom of the oil container, and remove them in order to get at
the bottom of the tubes.
By the present invention however, this defect is obviated, and we form the
burner tubes adjustable so that they can be inserted from the top into the oil
container and removed therefrom when required. For this purpose the top of
the lamp bottom is provided with a boss or lug which passes downwards through
the air chamber into the oil reservoir below. This boss is formed with holes
through which the burner tubes are passed until their ends dip down
far enough into the reservoir. Above this, each of the wick tubes is provided
with a lateral flange or lip by which they are secured firmly up to the top of
the lamp bottom by means of screws or otherwise. Thus by undoing the screws,
the burner tubes can be withdrawn at any time for the purpose of renewing the
bottom wicks when required, the bottom wick reaching short of top of burner
tubes so as to allow of short wicks to be inserted in the top of burner tubes as
described in the prior patent aforesaid. The wicks can thus be renewed at any
time without any trouble.
Another feature of the invention consists in providing means whereby the
wicks cannot be turned up too high. The arm or cap connected with the sliding
tube that regulates the flame, is prolonged somewhat and in the prolongation
there is fitted a mill-headed set screw. Thus by rotating the button underneath
the lamp bottom, the sliding tube is screwed higher or lower, and consequently
the flame is regulated or even put out altogether. By adjusting the set screw
however, the flame cannot be turned up too high, as the set screw abuts against
the top of lamp bottom when the regulating tubes have been lowered a certain
distance, thus preventing the sliding tubes being moved too far down, to expose
more than is necessary of the wicks above the burner tubes.
In thus describing our invention, we wish it to be clearly understood that we
do not absolutely confine ourselves to the double wick herein set forth, as our

page_text: improvements are applicable for lamps having a single wick from the flame down
to the oil reservoir. It is also obvious that where there are a number of wick
tubes, all the regulating tubes can be attached to one stem and raised and lowered
simultaneously as they burn away at a practically equal rate.
1011 1 f Vanam 1908
Improvements in or relating to Miners' Lamps.
We, JOHN NAYLOR, of the Wiend, Wigan, in the County of Lancaster, Brass
Founder, JAMES ROBY, of 1, Gaskells Yard, Millgate, Wigan, aforesaid, Lamp-
man, and WILLIAM ABBOTT, of 1, Sovereign Road, Wigan, aforesaid, Traveller,
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 miners' safety and other lamps being so constructed
as to burn petroleum or other mineral oils with absolute safety with bright and
smokeless flame and high illuminating power, and has for its object to provide
certain improvements on the invention set forth in the Specification of the prior
Patent No. 2639 of 1897. In the former patent aforesaid the burner tubes were
permanently fixed in the lamp bottom or oil reservoir so that they could not be
taken out, and to renew the bottom or permanent wicks, it was therefore necessary
to unsolder the bottom of the oil container, and remove it in order to get at
the bottom of the tubes.
By the present invention however, this defect is obviated.
It will be understood from the following description, reference being had to
the accompanying drawing, in which:-
Figure 1 is a front elevation partly in section of the lamp;
Figure 2 a plan showing how the burner tubes are made adjustable;
Figure 3 a sectional elevation thereof.
In these A A are the wick tubes, B the oil container, C an air chamber above
the oil container having a little orifice D connecting the two, E is an orifice
containing the filling-in tube F. This is screwed in the top of the chamber (
and descends to nearly the bottom of the air chamber, so as to prevent the oil
running out in case the lamp is overturned. The filling screw has a vent hole
for air through the centre, through which a small stem passes having a valve
at one end and a knob G at the other. This stem is sufficiently thin to allow
a vent for air through the hole in the filling screw. The stud G prevents the
valve & stem from falling out of filling screw, and the valve g closes only when
the lamp is completely overturned, and so prevents the oil flowing out should
such a contingency as upsetting the lamp occur.
Round each burner or wick
tube is a sliding tube H. This tube is connected to an arm I into which is
screwed a stem J passing up from below the bottom, through a close fitting
tube L commonly called the pricker tube. Below the bottom this stem is sup-
plied with a button G. All these parts are referred to and described in the
prior patent specification aforesaid. By the present invention we form the
burner tubes A adjustable so that they can be inserted from the top into the oil
chamber B and removed therefrom when required. For this purpose the
top of the lamp bottom is provided with a boss or lug M which passes downwards

page_text: through the air chamber C into the oil reservoir below. This boss is formed
with holes through which the burner tubes A are passed until their ends dip
down far enough into the reservoir B. Above this each of the wick tubes is
provided with a lateral flange or lip N by which they are secured firmly to the
top of the lamp bottom by means of screws O or otherwise. Thus by undoing
the screws the burner tubes A can be withdrawn at any time for the purpose
of renewing the bottom wicks when required, the bottom wick reaching short
of top of burner tubes so as to allow short wicks to be inserted at the top of
the burner tubes as described in the prior patent aforesaid.
The wicks can thus
be renewed at any time without any trouble.
Another feature of the invention consists in providing means whereby the
flame cannot be turned up too high. The arm or cap I connected with the sliding
tube H that regulates the flame is prolonged somewhat and in the prolongation
there is fitted a milled headed set screw P. Thus by rotating the button G under
neath the lamp bottom the sliding tube H is screwed higher or lower and con-
sequently the flame is regulated or even put out altogether. By adjusting the
set screw P therefore the flame cannot be turned up too high as the set screw abuts
against the top of lamp bottom when the regulating tubes H have been lowered
a certain distance, thus preventing the sliding tubes H being moved down too
far, to expose more than is necessary of the wicks above the burner tubes A.
In thus describing our invention, we wish it to be clearly understood that we
do not absolutely confine ourselves to the double wick herein set forth, as our
improvements are applicable for lamps having a single wick from the flame down
to the oil reservoir. It is also obvious that where there are a number of wick
tubes all the regulating tubes can be attached to one stem I and raised and
lowered simultaneously as they burn away at practically an equal rate.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:-
1. In miners' and other lamps in which there is an oil chamber with an air
chamber above, the combination therewith of a tube or tubes dipping down
through the air chamber into the oil chamber below and provided above with
flanges or lips by which alone they are secured firmly to the lamp bottom by
means of screws or otherwise, whereby by undoing the screws the wick tubes
can be withdrawn, substantially as and for the purpose described.
2. In miners' and other lamps in which there is an oil chamber with an air
chamber immediately above, providing the top of the air chamber inside with a
boss or lug passing downwards through the air chamber into the oil chamber
below, and having holes through which the wick tubes can be passed, substantially
as described.
3. The combination with the raising device J, the arm I thereon and regulating
tubes H attached to the said arm, of the adjustable set screw P fitted into the
end of said arm, said set screw being so arranged as to abut against the top of
the lamp bottom or against an abutment to prevent the regulating tubes being
lowered to expose more than is necessary of the wicks substantially as described.
1000
WM. P. THOMPSON & Co.,
Patent Agents,
Of Liverpool, Manchester, Birmingham and London.