Year: 1887

page_text: I, FRANÇOIS HUBERT LENDERS of 118 Bishopsgate Street in the City of London,
Merchant do hereby declare the nature of this invention to be as follows:-
In specification No. 11,529 filed on the 24th day of August 1887 by one Louis
Cornelis, is described a lamp of a simple construction having a central tube through
the body of the same, which formed a passage for the supply of air to the flame.
Upon this tube was slid a second loose tube carrying fins or ribs, over which was
placed a third or outer tube having slots into which the fins fitted. These fins served
as guides for flat wicks which were passed between these two tubes. . I have found
that the construction of the lamp may be simplified by omitting the second tube and
fins and making the first fixed tube of such a size in relation to the outer as to permit
of the insertion of the wick between them and that such a wick may be the usual
tubular or round one, which would be raised and lowered by one of the easily removable
wick spindles therein described in place of employing two as was necessary with two
flat wicks. Or by placing the fins or ribs of the second tube on this first fixed one,
the two flat wicks can be employed, the lamp being the same with the exception of the
omission of the one tube. It will be evident,. that if one flat wick is to be employed
a single fin or rib and a single slot in the outer tube will be sufficient either where the
original second loose tube is retained or on the first fixed one as I have described.
When using the one flat wick, I find one wick spindle only is sufficient, though two
may be used. The omission of the second tube considerably lessens the possibility of
overheating the oil in the lamp, it having been found to convey the heat down to it.
The inner and outer tubes do not do this as the first is kept cool by the current of air
passing up inside, and the upper half of the other by being practically in contact
with the outer air. When however it is desired to retain the loose or second tube as
is sometimes preferable where two or more flat wicks are used I considerably shorten
it in length so that it shall not dip into the oil or spirit in the lamp, or shall only just
dip therein in place of extending to the bottom of the reservoir as described in said
prior specification, and support it in this position by soldering inside of it a ring of
metal which will rest on the top of the inner fixed tube, or by soldering a ring on the

page_text: outside of this fixed tube at about the oil level so that the loose one may rest thereon.
The portion of the outer tube inside the reservoir may also be shortened if desired.
To further prevent the heat from the flame which is thrown down on to the outside
of the body of the lamp, raising the temperature of the oil, 1 provide thereon at that
point a chamber having openings therein through which the air may circulate, or filled
with non-conducting matter.
I have also adapted the lamp for heating, cooking, food warming, boiling water,
and similar purposes, and in this case I prefer to form the body portion so that a firm
base shall be secured, the air being admitted to the central tube through perforations
in the base. At the sides, of the body I secure three or more short tubes in which
can be placed rods, the height of which can be regulated by holes and pins, or in any
convenient manner. These form a species of tripod and are adapted for holding a
kettle or other article. To collect and direct the flame upwards a wide tube or funnel
may be placed over the burner and supported by legs on the body of the lamp, a
sufficient space being left for air to circulate. This funnel may be made to take the
place of the usual glass chimney where oil is being burnt, but if alcohol or methylated
spirit is used, it serves to keep off currents of air. It may be raised or lowered by
causing an arm attached to it, to slide on one of the tripod legs.
In an ordinary oil cooking stove it will be evident that this construction of wick
tubes and removable wick.spindles.may be used, any number which may be desired
being placed together.
In place of screwing the burner portion of the lamp into the body-a species of
bayonet joint may be used so that it may be forced in and a slight turn given to
secure it.
Dated this 30th day of Santamber 1887
PHILIP M. JUSTICE,
55 & 56, Chancery Lane, London,
Applicant's Agent.

page_text: I, FRANCOIS HUBERT LENDERS of 118 Bishopsgate Street in the City of London,
Merchant, 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 improvements upon the lamp patented under date of the
24th August 1887, No. 11,529 by one Louis Cornelis and the present improvements
will be clearly understood by comparing said specification and drawings with the
drawings filed herewith and which form part of the present specification and in
which:
Fig. 1 represents one form of the improved lamp.
Fig. 2 represents a portion of same showing a different wick arrangement.
Fig. 3 is a sectional plan on the line a a of Fig. 1.
Fig. 4 is a sectional plan on the line y y of Fig. 2.
Fig. 5 shows a form of lamp adapted for food warming or cooking purposes.
Fig. 6 is a plan view of same.
In said prior specification the lamp described had a central tube through the body
of same, which formed a passage for the supply of air to the flame. Upon this tube
was slid a second loose tube over which was placed a third or outer tube. Either the
inner or the outer one of those carried fins or ribs projections on which fitted into slots
in the other. These pins served as guides for flat wicks which were passed between
the two tubes. I have found that this construction may be employed by omitting the
second tube and fins and making the first fixed tube of such a size in relation to the
outer as to permit of the insertion of the wick between them and that such a wick
may be the usual tubular or round one. This construction I have shown in Fig. 5 in
connection with the food warming or cooking lamp which will be more fully described
hereafter, but it will be understood that it is equally applicable to the form of lamp
shown in Fig. 1. In this figure C is the central air tube, E is the tubular wick
placed directly upon said tube and inside of an outer tube F carrying a bent spring
plate G and one of the wick spindles H described in said prior specification, the
teeth of which pass through a slot in the tube F and serve to raise and lower
the wick.
By placing a single fin or rib f upon the outside of the central tube C as shown in
Figs. 1 and 3 a single flat wick may be employed which would be placed around saine
and inside of the outer wick tube as shown, one wick spindle H would be sufficient
to raise this, though two might be employed. Or by placing two fins or ribs fupon
the said tube C the two flat wicks could be employed as described in said prior specifi-
cation, the lamp being the same with the exception of the omission of one tube. The

page_text: omission of the second tube considerably lessens the possibility of overheating the oil
in the lamp, it having been found to convey the heat down to it. The inner tube C
and the outer tube F do not do this to such an extent as the first is kept comparatively
cool by the current of air passing up inside and the upper part of the other by the air
currents from the outside as shown in Fig. 1, though to prevent any possibilty of
overheating the oil I prefer to keep this latter as short as possible below.
When however it is desired to retain the second or loose tube D as is sometimes
preferable when two or more flat wicks are used I may employ the arrangement shown
in Fig. 2, which shows the tube F and its attached part F ready to be screwed into
the lamp body and in which the tube D is shown as considerably shortened so that it
need not touch the oil, and as resting on a ring C¹ soldered on the outside of the tube C.
Or in place of this a ring of metal may be soldered inside of tube D at the top so that
it will rest on the top of the tube C which would have to be shortened to that extent,
but I only show the former construction as the latter will be clearly understood. When
this loose tube is dispensed with I find that the fin f should be a plain straight piece
as shown clearly in Fig. 1, as the projections on same which previously engaged with
the slots in the loose tube are not required to engage with any on the outer tube as
such a construction would prevent the outer tube and its connected parts from being
turned when being secured to the body of the lamp.
To prevent to a certain extent the heat from the flame which is thrown down on to
the outside of the body of the lamp A raising the temperature of the oil I provide
thereon at that point a chamber A having openings therein through which the air
may circulate, or instead it may be filled with non-conducting material or composition.
The construction of lamp shown in Fig. is adapted for heating, cooking, food
warming, boiling water and similar purposes. Its body A is formed so that a firm
base shall be secured, the air being admitted to the central tube C through perforations a.
At the sides of the body I secure three sockets A³, each of which carries a short tube A
on which is placed a perforated rod A, the height of which can be regulated by pins R
which can be placed through a hole in the tube A³ and on to any one of the per-
forations R in the rod A. These three rods carry flat plates S which may serve to
carry a flat ring and so form a spieces of tripod for holding a kettle or other article.
To collect and direct the flame upward a wide tube or funnel T may be placed over
the burner and be supported by legs T' which rest on the body of the lamp, the air
current passing up through this as indicated by the arrows. When this is employed
the usual glass chimney may be dispensed with if the lamp is burning oil and where
alcohol or methylated spirit is being used it is of advantage for keeping off the currents
of air.
It may be raised or lowered by causing an arm T2 attached thereto to slide on one
of the tubes A³, a screw T3 being employed for holding same in position. A single
tubular wick E is employed and a single wick spindle H, as previously described.
As described in the specification before referred to one end of the spindle H bears
in the spring plate while a bearing on the other side of the teeth his secured for
it by passing it through a slot in the part F¹.
In place of screwing the part F¹ (which is soldered to the tube F) into the body of
the lamp, I may form on said part two projections zz which may pass through slots 2¹¹
in the orifice of the body A, a half turn or so being sufficient to secure them after
the manner of a bayonet joint. For the purposes of a cooking stove or range any
number-of-such-wick-tubes-and-their attached parts with the necessary wick spindles
might be placed in a single oil reservoir.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, 1 declare that what I
claim is :-
:-
1. In a lamp the combination of a central air/tube C with the tube F and attached
part F, the space between said tubes serving to carry a wick without the intervention
of a loose tube substantially as described.

page_text: 2. In a lamp the combination of a central air tube Chaving one or more fins or
ribs thereon to adapt it for one or more flat wicks and a tube F with its attached
part F, and means for raising the wick or wicks, substantially as described.
3. In a lamp having the central air tube C and tubes D and F the means
substantially as described for holding said tube D out of contact with the oil in the
lamp.
4. In a lamp a chamber A¹ placed upon the upper part of the oil vessel
substantially as described and for the purposes set forth.
5. A lamp adapted for cooking or food-warming purposes substantially as described
and shown in Figs. 5 and 6 of the accompanying drawings.
Dated this 20th day of Jun 1000
PHILIP M. JUSTICE,
55 & 6, Chancery Lane, London,
Applicant's Agent.