IMPROVEMENTS IN PETROLEUM OR HYDROCARBON COOKING AND HEATING STOVES
Year: 1881

page_text: LETTERS PATENT to Friedrich Hermann Felix Engel, Civil Engineer and
Patent Agent, in the City of Hamburg, Germany, for an Invention of
"IMPROVEMENTS IN PETROLEUM OR HYDROCARBON COOKING AND HEATING
STOVES." A communication from Heinrich Kock, of Hamburg, in the
German Empire.
PROVISIONAL SPECIFICATION left by the said Friedrich Hermann Felix
Engel at the Office of the Commissioners of Patents on the 10th May 1881.
FRIEDRICH HERMANN FELIX ENGEL, Civil Engineer and Patent Agent, in the
City of Hamburg, Germany, "IMPROVEMENTS IN PETROLEUM OR HYDROCARBON
COOKING AND HEATING STOVES." A communication from Heinrich Kock, of
Hamburg, in the German Empire.
These improvements in petroleum or hydrocarbon stoves relate to the wick-
holder, wick-guide, the burner, and to details of the construction of the outer
casing.
The stove is for purposes of transportation constructed of several parts that are
separable, and which parts can be put together in such manner that only a small
space is required when packed up. A sockle or stand supports by lipped edges the
reservoir or basin, over which is disposed the cover plate carrying the wick, guide-
rollers, burners, and wick-holders. The body of the stove encircles the burners,
over which is the outer and upper part of the stove-casing for carrying a kettle,
boiler, or other object that has to be heated. This top part is moveable in an up
aud down direction, and slides with its bottom rim, which is furnished with small
grooves upon ribs fastened or formed to the body of the stove.
When the top part is raised the rim becomes freed from the ribs, and it can
then be turned for a short distance to make the rim rest upon the ribs, which latter
support the crown or holder part.
The purpose of this construction is to bring the crown, and with it the boiler or
other object that has to be heated, nearer to the flame or flames, or to increase the
distance if required.

page_text: The body of the stove is kept to the stand by means of screws that pass
through lugs of the bottom part and that catch over the lower projecting rim of
the body.
The top rim is attached to the body by means of screws and prevents the crown
being fully drawn off from the body, but for purposes of detaching the stove the
rim can be removed and the crown and the stove can be taken to pieces.
Each burner, of which there may be two, or more or less applied to each stove,
consists of a bottom casing cast to the cover-plate, and of a top casing that serves
as wick holder.
The top casing is hinged to the bottom casing and can be turned backward to
open the bottom casing.
The wick-holder of the top case is lined with tin-plate to make its inner part
quite smooth, and to prevent damaging of the wick when moved up or down in
the cast iron slot.
The wick-guide for moving the wick up or down consists of a pair of rollers
connected to each other by gearing, and moved or turned in a known manner by
one prolongated axle.
The profilation of the roller surface is new and forms part of the Invention.
Each roller is furnished with longitudinal outer grooves, and also circular grooves
by which a number of prismatical teeth or sharp pointed projections are formed to
the outer circumference of each roller.
The action of these rollers is to grip and guide the wick on its whole breadth,
whilst at same time the grooves allow the petroleum or other liquid to pass along
the whole breadth of the rollers from the basin freely to the top of the burner.
The rollers can be removed or taken from casing after the bottom casing is
turned over in position, whilst they are safely kept by top cover when this part is
closed and fastened by a screw.
For extinguishing the fame each burner may be furnished with a cap attached
turnable to a grate of the body.
The caps can be turned by rods from outside the stove and can be placed down
to cover the flame.
These caps may be constructed with an opening at the end or centre part, so as
when laid down a small part of the flame remains uncovered and unextinguished.
If the cap is closed rapidly the flame is extinguished altogether, but if the cap is
carefully lowered down upon the flame a small part of the wick will remain
alight, and may be used for purposes where only little heat is required.
Instead of partly covering the wick, the flame may be reduced in size by
forming the upper or outer burner cap out of two parts that can be narrowed or be
drawn apart from each other, and by reducing or enlarging the width of the
opening through which the flame passes.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Friedrich Hermann Felix Engel in the Great Seal Patent Office on
the 16th November 1881.
FRIEDRICH HERMANN FELIX ENGEL, Civil Engineer and Patent Agent, in the
City of Hamburg, Germany. “IMPROVEMENTS IN PETROLEUM OR HYDROCARBON
COOKING AND HEATING STOVES." A communication from Heinrich Kock, of
Hamburg, in the German Empire.
These improvements in petroleum or hydrocarbon stoves relate to the wick holder,
wick guide, the burner, and to details of the construction of the outer casing.
The stove is, for purposes of transportation, constructed of several parts that are
separable, and which parts can be put together in such manner that only a small
space is required when packed up.
A sockel or stand supports by lipped edges the reservoir or basin over which is
disposed the cover plate carrying the wick guide rollers, burners, and wick holders.
The body of the stove encircles the burners, over which is the outer and upper part
of the stove casing for carrying a kettle, boiler, or other object that has to be
heated. This top-part is movable in up and down direction, and slides with its
bottom rim, which is furnished with small grooves, upon ribs fastened or formed
to the body of the stove. When the top part is raised the rim becomes freed from
the ribs, and it can then be turned for a short distance to make the rim rest upon
the ribs, which latter support the crown or holder part.
The purpose of this construction is to bring the crown and with it the boiler or
other object that has to be heated nearer to the flame or flames, or to increase the
distance therefrom if required.
The body of the stove is kept to the stand by means of screws that pass through
lugs of the bottom part, and that catch over the lower projecting rim of the body.
The top rim is attached to the body by means of screws, and prevents the crown
being fully drawn off from the body; but for purposes of detaching the stove the
rim can be removed, and the crown and the stove can be taken to pieces.
Each burner, of which there may be two, or more or less applied to each stove,
consists of a bottom casing cast to the cover plate, and of a top casing that serves
as wick holder. The wick holder of the top case is lined with tin-plate, to make
its inner part quite smooth and to prevent damaging of the wick when moved up
or down in the cast iron slot.
The wick guide for moving the wick up or down consists of a pair of rollers
connected to each other by gearing, and moved or turned in known manner by one
prolongated axle. The profilation of the roller surface is new, and forms part of
the Invention. Each roller is furnished with longitudinal outer grooves, and also
circular grooves by which a number of pyramidical teeth or sharp pointed projec-
tions are formed to the outer circumference of each roller. The action of these
rollers is to grip and guide the wick on its whole breadth, whilst at same time the
grooves allow the petroleum or other liquid to pass therethrough along the whole
breadth of the rollers from the basin freely to the top of the burner.
For extinguishing the flame each burner may be furnished with a cap attached
turnable to a grate of the body.
These caps can be turned by rods from outside the stove, and can be placed down
to cover the flame. These caps may be constructed with an opening at the end or
centre part, so as when laid down a small part of the flame remains uncovered and
unextinguished. If the cap is closed rapidly the flame is extinguished altogether,
but if the cap is carefully lowered down upon the flame, a small part of the

page_text: wick will remain alight and may be used for purposes where only little heat is
required.
Instead of partly covering the wick the flame may be reduced in size by forming
the upper or outer burner cap of each flame out of two parts that can be narrowed
or be drawn apart from each other, and by reducing or enlarging the width of the
opening through which the flame passes.
In order that the Invention may be clearly understood and carried into
effect, I have annexed hereto a Sheet of Drawings wherein is represented a stove
constructed according to this Invention. Figs. 1 and 4 represent outer view and
ground plan respectively of the stove; and Figs. 2 and 3 are longitudinal sectional
views; and Fig. 5, a ground plan in section on line a, b, of Fig. 2.
The stove, according to this construction, consists of the basin or petroleum
reservoir B supported by three feet or stand A, which basin can be filled with
petroleum through opening J, closed by a flap L, a plate C with two burners D
and D', cover G with grate and burner caps R, body E, and top or crown-part F.
This top part carries a rim e with grooves i (see Figs. 3 and 4), and slides on the
ribs of body E, which latter supports the top part when. raised, as in Fig. 1, and
turned for a short distance to make the rim e rest upon the ribs, in which position
the top part is arrested by the inclined plane ƒ formed to rim e, which plane catches
under projections o of the upper part of body E.
Body E is supported by cover G, and kept in position by one or more projec-
tions c.
Cover G rests upon top prolongations of feet A, as will be well understood
on reference to Fig. 2 of the Drawings.
Each burner with its wick guide consists of a casing H formed to plate C and
cover H', which are in this case fastened to H by means of screws l, as shown in
Fig. 3 is the tin plate lining before mentioned applied for reducing friction of
the wick in the wick-holder.
The wick guide consists of a pair of feeding rollers a, a, connected to each other
by tooth-wheels n, p, fastened to the corresponding axles, and moved in manner
commonly known. Each roller is furnished with longitudinal grooves, as shown
by Fig. 2, and also with circular grooves, as shown by Fig. 3, which construction
produces a number of pyramidical projections to the outer circumference of the
roller, between which a free upward passage of the oil from the basin to the flame
is ensured, whilst on the other hand the wick is guided by the feeding rollers
upon its whole width.
The burner caps R may be cast in one piece with cover G, or may be screwed
to it and be made of sheet coper in the case, as shown in Figs. 2 and 3 of the
Drawings. represents the extinguishing caps before mentioned attached
turnable to grate h (see Fig. 2). Levers are applied for moving these caps from
the outside of the stove.
Fig. 2 represents the right hand side burner with closed extinguishing cap, the
other burner with open cap; x is the small opening formed to the top of cach
cap used for leaving part of the wick uncovered to allow a small flame to remain
burning, in case but little heat is required, or in other cases. Another mode of
regulating the flame may be employed by altering or changing the size of the
opening of the burner caps R. These caps may be constructed of two parts,
each as before described, which parts are adjustable for reducing or enlarging the
width of opening t, and which may also be used for closing the opening t whilst
the stove is out of use.
Having now described the nature and particulars of the said Invention, I claim,-
Firstly. In a petroleum or hydrocarbon burner, as described, the construction of
the wick guide with the feeding rollers a, a, furnished with longitudinal and
circular grooves to form the service of the rollers into a great number of sharp
pointed pyramidical teeth.
Secondly. In the burners, as described, the lining of the wick holder with tin-
plate fastened by bending both ends, as set forth and shown in the Drawings.

page_text: Thirdly. The construction of the crown or top part of the burner, as set forth,
sliding up and down for the purpose of altering the distance between the boiler
and flame or flames, as and for the purpose specified.
Fourthly, The extinguishing caps v of the burner, as set forth, formed with a
small opening at their upper side for the purpose of allowing of the burning of
flame, constructed and operating as and for the purpose specified.
In witness whereof, I, the said Friedrich Hermann Felix Engel, have hereunto
set my hand and seal, this Fourteenth day of November, in the year of
our Lord One thousand eight hundred and eighty one.
F. H. F. ENGEL.
(L.B.)