Improvements in and connected with Oil-burners for Lamps.
Year: 1897

page_text: Date of Application, 20th July, 1897
Complete Specification Left. 19th Apr. 1898-Accepted, 28th May,
1898
PROVISIONAL SPECIFICATION.
Improvements in and connected with Oil-burners for Lamps.
I, ADOLF GRAETZ, of 31, Lausitzer Strasse, of Berlin, Kingdom of Prussia,
German Empire, Manufacturer, do hereby declare the nature of this invention to
be as follows:-
.
-
This invention relates generally to oil burners for wick lamps and to oil burners
for petroleum lamps in particular. My improvements consist in certain novel
arrangements and combinations which I describe with reference to the accom-
panying drawing, in which:
Figure 1 is a vertical section, and
Figure 2 is a horizontal section of my improved burner.
The first characteristic feature of my invention consists in the outer tube or
mantle surrounding the wick as also the interior mantle surrounded by the wick,
that the said mantles enclose an intermediate space, the diameter of which widens
or extends in a downward direction, in which intermediate space thus increased
the wick may be freely operated or turned up and down as required.
I attain this object in the following manner:
My improved burner is so constructed that the inner mantle is reduced or con-
tracted in diameter in its lower portions i.e. the inner mantle is smaller in diameter
at the bottom than at the top whilst as regards the outside mantle I, as above.
mentioned, consider. it advantageous to enlarge or increase the size or diameter,"
of the same in an outward direction.
In the drawing these extensions or variations of the diameter of the burner
tubes or mantles are shown at a and b.
The inner mantle is decreased or reduced in diameter from the point a, whilst
at the point b, the outer wick tube is widest.
It is conceded, however, providing the outer mantle with a bulge or extension
as well as increasing the diameter of the same is already known, but in the
burners as hitherto made, the inner burner mantle has not been contracted in
diameter for the above purpose and in this my invention proper consists.
This especial narrowing or reduction of the diameter of the inner mantle
possesses very important advantages from a trade or commercial point of view for
the reason that the diameter of the screw thread c (by means of which the burner
is attached to a suitable lamp), can be so adapted to small diameters that even
large size burners of my improved construction can be fitted or attached to lamp
vessels having small screw or thread openings that is to say my improvement admits
of larger burners being used for above described lamps than heretofore.
The contraction or reduction of the inner burner tube or mantle also permits
of the wick mechanism surrounding the said inner mantle to have a less diameter
than has been usual in burners of this class, the effect of which is also a further
gain in space for the operation of the wick, the advantage of which I have above
described.
The space r gained by the aforesaid reduction in diameter, or contraction of

page_text: the said inner mantle as illustrated in Figure 1 constitutes therefore a very
essential feature of my invention.
ADOLF GRAETZ,
By Geo. H. Rayner,
Agent for the Applicant.
Improvements in and connected with Oil-burners for Lamps.
I, ADOLF GRAETZ, of 31, Lausitzer Strasse, of Berlin, Kingdom of Prussia,
German Empire, Manufacturer, 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 oil burners for wick lamps in general and to burners
for petroleum lamps in particular. My improvements consist in certain novel
arrangements and combinations which I describe with reference to the drawings
sent in with my Provisional Specification, and in which:
Figure 1 is a vertical section, and
Figure 2 a horizontal section of my improved burner.
In my improved burner the outer tube or mantle surrounding the wick, as also
the inner mantle surrounded by the wick, that the said mantles enclose an inter-
mediate space, the diameter of which widens or extends in a downward direction,
in which intermediate space thus enlarged, the wick may be freely turned up and
down as required.
I attain this object in the following manner:
I so construct the burner that the inner mantle is reduced or contracted in
diameter at its under part i.e. the inner mantle is larger in diameter at the top
than at the bottom, whilst the outside mantle, as above mentioned, is constructed
with an enlarged diameter in an outward direction.
In the drawing these extensions and contractions of the diameter of the burner
tubes or mantles are shown at a and b.
The inner mantle commences to decrease in diameter from the point a, whilst
the outer wick tube is widest at the point b.
I am aware that such burner mantles are already known provided with a bulge
or extension, as well as tubes of varying diameter, but in the burners as hitherto
made, the inner burner mantle has not been contracted in diameter for the above
purpose.
The especial reduction of the diameter of the inner mantle confers a very
important advantage from a commercial point of view, viz., that the diameter of
the screw-thread c (by means of which the burner is attached to the lamp body,)
that this screw-thread c, can be made much smaller than hitherto, that is to say,
the burner-thread c can be so constructed that even large size burners can be fitted
to lamp vessels (or bodies) having small screw thread openings. My improvement
thus permits of larger burners being used for the above described lamps than
heretofore.
The characteristic feature of my invention resides therefore, as hereinbetore
indicated, in the fact, that the guiding parts for the carrying mechanism of the
wick, or more precisely the wick-transporting mechanism, is guided upon the
lower portion of the contracted inner burner-tube, said wick carrying or trans-
porting mechanism comprising or consisting of vertical ascending and descending
clips.

page_text: It is just in consequence of this contracting of the inner burner tube, that I
render it possible to employ or to manufacture the wick-carrier, or more pre-
cisely the wick-slide of a smaller diameter than usual, from which it naturally
follows that the thread c of the outer wick-tube (which thread is, as is apparent
for the purpose of attaching the burner to the lamp body), that this said thread
can also be contracted in diameter to the extent of the before mentioned contrac-
tion of the inner wick-tube a. From the above it also follows, that the before
mentioned outer wick-tube 6 need be widened only to such an extent, or only so
much as to allow, firstly the wick conveniently to be passed up from underneath,
between the burner-tubes, and secondly to allow the wick-transporting rack.
space to pass. Said wick-transporting rack is actuated in known manner by a
small disc and rod from the outside.
I am aware that the arrangement of the transporting clips d, which I have
employed in my improved burner is known, said transporting clips being fitted
in such manner that they act as springs, and are pressed together by hand or in
a machine, so that the said clips pass into or come to be located within the wick-
carrier or wick-transporting tube, whereupon the wick can be placed or passed over
the clips, the actuation of the transporting mechanism subsequently causing the
said clips to emerge from the transporting tube during the upward movement
of the wick, and to effectually grip the wick in the required manner.
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:
-
A lamp burner in which the lower portion of the inner wick-tube a, is provided
with a contraction, extending in a downward direction, upon which contraction
of the said inner tube a, the wick-carrying or transporting mechanism is arranged
to slide, said wick-transporting mechanism consisting of or comprising trans-
porting clips d, & wherein the said contracting of the inner wick-tube a has the
purpose, as far as possible, of reducing the diameter of the outer wick-tube b,
and consequently also the diameter of the screw-thread c of said outer wick-tube b,
substantially as described.
בד
1
1
1000