Improvements in Circular Petroleum Burners for Heavy Mineral Oils.
Year: 1893

page_text: Date of Application, 30th Oct., 1893-Accepted, 16th Dec., 1893
COMPLETE STEUIFICATION.
Improvements in Circular Petroleum Burners for Heavy
Mineral Oils.
I MAX KRAY, Lamp Manufacturer, of 7 Breckstrasse, Berlin, in the Empire of
Germany, 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:-
The petroleum burner which forms the object of the present invention is shown
on the annexed drawing in full size.
Fig. 1 is an elevation thereof.
Figs. 2 and 3 are vertical sections, and
Figs. 4 and 5 horizontal sections on the lines v w and x-y of Fig. 2.
The inner wick tube a of this burner is extended downwards and closed by the
bottom plate b. Above the latter, and at the side between the inner and outer
wick tubes, the conical shaped air inlet c is made. This communicates with a
semicylindrical air duct d which surrounds, the lower part of the wick tube and
which is closed at the lower end by the plate e and opens out at the top into the
perforated body f of the burner. In the latter is the cup shaped wick raiser
chamber g closed at the top by the removable cover h. The upper part of the
The burner
burner is connected to the oil reservoir by means of the small tube i.
gallery kis connected to the body of the burner by means of bayonet fastenings to
which the winder 7 serves as a fastening pin. The disc m is fitted to the rod n
having a bottom collar o and the wings p which serve as guides. Besides the
circular wick g another (r) is used as a suction wick which is fixed on the spikes s..
The advantages of this new burner are as follows:-
The burner is a central air draught burner of considerable lighting power, the
central suction tube of which terminates in the burner so that the latter is
independent of the reservoir, that is to say, can be screwed to any desired reservoir.
The air flowing towards the flame enters in the body of the burner f reaches the
air duct d, from thence passes through the cone shaped opening into the inner
wick or draught tube a and flows upwards to the flame. On its progress downwards,
and then upwards, the air supplying the combustion is preliminarily heated and
reaches the flame at an increased velocity. This simple method of air supply
makes heavy mineral oils of a specific gravity of 0.860 give a bright and constant
flame. The oil supply is supported by the second additional wick which, besides
bringing up oil freely round the burning wick 9 also ensures thereby that on the
falling of the level of the oil by consumption the flame is not suddenly extinguished,
but is gradually reduced. In this way also the charring of the burning wick is
reduced.
'
By the projection into the reservoir of the metal of the burner, the oil, by the
conduction of heat, is previously warmed and the process of combustion facilitated.
The tube i serves as a conductor for any overflowing petroleum which is thereby
taken back into the reservoir, prevents its collection and coagulation, allows the
gases formed in the reservoir to escape and conducts them through the body of the
burner to the flame for combustion. The deflector carrier n is removable whereby
the inner tube can be easily cleaned. By the double guide o p the deflector carrier
and the deflector itself are always central, a matter which favorably affects the
flame. The cup
encloses the part of the burner outside the reservoir and is
provided with a removable cover h to allow of the easy cleaning or repairing of the
wick winder. For the rest the whole burner is distinguished by its remarkably
short and compact shane

page_text: 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:
In a circular petroleum burner for heavy mineral oils
1. The air duct to the interior of the flame consisting of the extension of the
inner wick tube a into the reservoir and of the communicating air duct d which at
the upper end opens out to free air substantially as described.
2. The use of a second or suction wick (r) to assist the simple burning wick
substantially as described.
q
3. The use of a small tube i connecting the burner body with the reservoir for
the
purpose of leading back any overflowing oil into the font and the conduction of
gas from the latter to the flame substantially as described.
4. The use of a closing shell g provided with a cover h for the purpose of giving
access to the wick winder.
5. The use of a removable deflector plate holder n with guides o, p for ensuring
the central position of the deflector substantially as described.
6. The arrangement and construction of circular petroleum burners for heavy
mineral oils substantially as described with reference to the drawings.
Dated this 30th day of October 1893.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C, Agents.