Improved Circular Burner for Use in connection with Liquid Hydrocarbons Having Different Carbon Contents.
Year: 1897

page_text: Date of Application, 11th Mar., 1897-Accepted, 19th June, 1897
Improved Circular Burner for Use in connection with Liquid
Hydrocarbons Having Different Carbon Contents.
I, FREDERICK WILHELM HEINRICH HEMPEL, Engineer, of No. 4 Waterloo Ufer,
Berlin, Germany, do hereby declare the nature of my invention and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement :-
The present invention relates to circular burners and consists in regulating the air
inlet so that the necessary amount of oxygen may be introduced to the interior of
the flame only, or simultaneously to the exterior or mantle of the same, as may be
desired. The present invention enables the employment of circular burners for
burning liquid hydrocarbons having different carbon contents.
And in order to render the present specification more easily intelligible reference is
had to the accompanying drawing which reprosents a vertical section through a
circular burner constructed according to the present invention. The tube or sleeve d
through which the circular wick extends is provided with the usual means t for
regulating the height of the wick and secured in the ordinary manner to the oil
receptacle or reservoir b. The wick sleeve is provided in the usual manner with a
slot o through which the outer air may pass, through the sleeve and to the interior of
the flame. The said sleeve is provided with a perforated mantle k having cover D,
on which rests a perforated short cylindrical part H, carrying the crown or gallery g
for the reception and support of the lamp cylinder or glass c, and provided with a
cap p as hereinafter more particularly described.
The cylindrical part or throat piece H consists of two rings h fitting one over
the other, the inner ring h¹ being attached firmly between the cover D and the
crown g and the outer ring being revoluble on the said inner ring. The inner ring
is provided with perforations and the outer ring h has corresponding perforations,
and according to the position of the latter on the former the effective openings
extending through both rings to the exterior of the wick sleeve may be adjusted in
size as will be evident. The cover D is provided with a circular orifice which
corresponds to the diameter of the wick sleeve and fits tightly round the same when
the parts are fixed in position, so that no air can pass through the mantle k to the
exterior of the flaine, all the air entering said mantle being forced to pass through the
slot o to the interior of the flame. The air which passes into the throat piece H when
the orifices of the same are open will pass through the perforations f of the gallery
bottom to the interior of the glass cylinder, to which it may also gain admission
through the annular opening a formed by the cap p.
If the openings of the throat piece H are partially closed most of the air drawn
into the cylinder c will be obliged to pass through the slot o at an increased speed to
the interior of the flame. If again the orifices of the throat piece H are entirely
closed all the air necessary for combustion will have to pass to the interior of the
flame, thus lessening the volume of the same but widening the same or, so to say,
inflating it, and causing it to burn with great brilliancy, in consequence of the
energetic feed of oxygen to the flame. In employing liquid hydrocarbons containing
only a small percentage of carbon, the throat piece H would be opened, whilst if
hydrocarbons rich in carbon are employed the orifices of the throat piece would have
to be entirely or partially closed. The cover D may be provided with small openings
or the circular orificer of the same may be made slightly larger than the diameter of

page_text: the wick sleeve so that a small quantity of air will be able to pass to the exterior of
the flame from the space 1, even when the orifices of the throat piece H are quite
closed, but the proportions should be such that such opening if present should have
an area not exceeding one tenth of the area of the orifices of the throat piece H,
otherwise the effect of the separating cover D would be reduced to nil.
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. Circular burner for liquid hydrocarbons of different carbon contents, having a
burner mantle k with cover D to close the same, said cover being provided with an
orifice r, and having between said cover and cylinder crown a throat piece provided
with orifices and means for regulating said orifices in the manner and for the purpose
substantially as described.
2. In connection with the circular burner covered by Claim 1, the provision for
restricted communication between the space and the interior of the throat piece H 1
substantially as described.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.
GOT TALE