IMPROVEMENTS IN LAMPS FOR BURNING MINERAL AND VEGETABLE OILS
Year: 1879

page_text: LETTERS PATENT to Frederik Wolff, of 5, Raadhusstraede, Copenhagen,
Denmark, for the Invention of "IMPROVEMENTS IN LAMPS FOR BURNING
MINERAL AND VEGETABLE OILS." A communication by Kristian Hansen
Engermann Höybye, of Odense, Denmark.
Sealed the 23rd January 1880, and dated the 8th November 1879.
PROVISIONAL SPECIFICATION left by the said Frederik Wolff at the
"
Office of the Commissioners of Patents on the 8th November 1879.
IMPROVE-
FREDERIK WOLFF, of 5, Raadhusstraede, Copenhagen, Denmark.
MENTS IN LAMPS FOR BURNING MINERAL AND VEGETABLE OILS." [A communi-
cation by Kristian Hansen Engermann Höybye, of Odense, Denmark.]
These improved burners relate to all sorts of lamps using wicks, such as
petroleum, paraffin, rape-seed oil lamps, and others. They distinguish themselves
from all hitherto used burners in that the lamp cupola and glass need not be taken
off when the lamp is going to be lit. The part of the burner holding the cupola
and the glass want only to be screwed up so much as to be able to approach with a
lit match the very burner underneath the lamp glass.
The cupola holder is mounted on a tube, or tube formed box, provided with a
perpendicularly placed rack fitting to a cylinder round the burner outside the
wickholder in such a manner that it can move perpendicularly up and down round
the cylinder by which it is directed during its movement.
The motion of the tube is effected by a pinion gearing into the above mentioned
rack. The pinion is mounted on an axle placed in an upright standing collar on
the arris of the burner, and is provided with a head or button mounted outside
the burner.
A spring on the interior side of the collar operates on the back of the rack; the
tube is prevented from turning outside the cylinder in such a manner that the rack
by these means is forced to gear into the pinion.
To prevent the cupola holder from falling down again by its own accord when it
has been screwed up, and after having let loose the head, a feathered catch or spring
gears into the toothed wheel.
The tooth of this catch is formed in such a manner that it glides by its own
accord out of the intervals between the teeth of the pinion whenever the same is

page_text: turned to one or the other side, provided that sufficient force is applied for the
turning of the axle.
In the front of the tube a sufficiently large opening is of course made through
which, as soon as the cupola holder is screwed up, the superior mouth of the wick
holder may be reached with a burning match without being extinguished. Con-
venient openings are likewise made in the sides of the cylinder for the passage of
the atmospheric air for the chamber within the cylinder. Such openings are
likewise applied near the round burner and in the interior of the wick holder.
To prevent the pernicious admission of atmospheric air to the burner, the cupola
holder clasps, by the help of a little collar, into the arris of the burner in such a
manner that these two parts are close to one another.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Frederik Wolff in the Great Seal Patent Office on the 26th April
1880.
FREDERIK WOLFF, of 5, Raadhusstraede, Copenhagen, Denmark. "IMPROVE-
MENTS IN LAMPS FOR BURNING MINERAL AND VEGETABLE OILS." A communication
by Kristian Hansen Engermann Höybye, of Odense, Denmark.
The improved burners relate to all sorts of lamps using wicks, such as petroleum,
paraffin, rape-seed oil lamps, and others. They distinguish themselves from all
hitherto used burners, in that the lamp cupola and glass need not be taken off
when the lamp is going to be lit. The part of the burner holding the cupola and
the glass want only to be screwed up so much as to be able to approach with a lit
match the very burner underneath the lamp glass.
The improved burner is shown here on the accompanying Drawing, Figure 1,
mounted as a round burner for a petroleum lamp in a vertical section with the
cupola holder screwed down.
In Figure 2 it is shown with a section, also nearly vertical, with the cupola
holder screwed up for the lighting of the wick.
The cupola holder a is mounted on a tube, or tube formed box b, provided with
a perpendicularly placed rack c fitting to a cylinder e round the burner outside the
wick holder d in such a manner that it can move perpendicularly up and down
round the cylinder e, by which it is directed during its movement.
The motion of the tube b is effected by a pinion g gearing into the above
mentioned rack c. The pinion g is mounted on an axle placed in an upright
standing collar i on the arris of the burner 1, and is provided with a head or
button mounted outside the burner.
A spring on the interior side of the collar i operates on the back of the rack c,
not shown in the Drawing; the tube b is prevented from turning outside the
cylinder e in such a manner that the rack c by these means is forced to gear into
the pinion g.
To prevent the cupola holder a from falling down again by its own accord when
it has been screwed up, and after having let loose the head, a feathered catch or
spring gears into the toothed wheel g.
The tooth of this catch is formed in such a manner that it glides by its own
accord out of the intervals between the teeth of the pinion g, whenever the same is
turned to the one or the other side, provided that sufficient force is applied for the
turning of the axle f.
In the front of the tube b a sufficiently large opening is of course made, through
which, as soon as the cupola holder is screwed up, the superior mouth of the wick
holder may be reached with a burning match without being extinguished. Con-
venient openings are likewise made in the sides of the cylinder e for the passage of
the atmospheric air for the chamber within the cylinder e. Such openings are
likewise applied near the round burner and in the interior of the wick holder.
To prevent the pernicious admission of atmospheric air to the burner, the cupola
holder a clasps, by the help of a little collar n within the collar i into the arris of
the burner in such a manner that these two parts are close to one another. p is
the screw of the wick-holder by which the wick is moved.
Having now described and particularly set forth the nature of the said Invention,
and the manner of carrying the same into effect, I would have it understood that
what I claim is,―
Lamp burners, where wicks are used, such as petroleum, paraffin, rape-seed oil
lamps, and others, but more especially petroleum lamps, in which the part of the
burner holding the lamp glass and the cupola, may, in order to light the wick, be

page_text: screwed up so high as to light the wick without taking off the glass and the cupola,
which is effected by the contrivance that the cupola bolder sits upon a tube which
may be moved up and down outside another tube or cylinder mounted round the
wick holder on the burner. This cylinder being directed by the first mentioned
one, a convenient opening through which a burning match may be conveyed to the
wick in the burner being made in the first mentioned tube. In the last mentioned
tube or cylinder a convenient opening is likewise made for the admission of the
atmospheric air for the chamber within the cylinder outside and by round burners
also in the wick holder.
In witness whereof, I, the said Frederik Wolff, have hereunto set my hand
and seal, this 23rd day of April, in the year of our Lord One thousand
eight hundred and eighty.