IMPROVEMENTS IN LAMPS FOR BURNING PARAFFIN OIL AND OTHER VOLATILE OILS
Year: 1865

page_text: LETTERS PATENT to Abraham Follett Osler, of Birmingham, in the County
of Warwick, Manufacturer, for the Invention of "IMPROVEMENTS IN
LAMPS FOR BURNING PARAFFIN OIL AND OTHER VOLATILE OILS."
Sealed the 23rd January 1866, and dated the 7th August 1865.
PROVISIONAL SPECIFICATION left by the said Abraham Follett Osler at
the Office of the Commissioners of Patents, with his Petition, on the
7th August 1865.
I, ABRAHAM FOLLETT OSLER, of Birmingham, in the County of Warwick,
Manufacturer, do hereby declare the nature of the said Invention for "Iм-
PROVEMENTS IN LAMPS FOR BURNING PARAFFIN OIL AND OTHER VOLATILE OILS,"
to be as follows:-
My Invention consists of the improvements, herein-after described, in lamps
for burning paraffin oil and other volatile oils, and has for its object the pre-
vention of the flickering or unsteadiness of the flame, which is produced by
currents of air in the said lamps as ordinarily constructed.
In making, according to my Invention, a lamp for burning paraffin oil, or
other volatile oil, I construct and arrange the parts in the following manner:
I make the gallery of the lamp, that is, the part on which the shade or globe
is supported, of unperforated metal, so that no air can enter the globe or
shade at that point. The shade or globe is surmounted by a conical or other
shaped prolongation of wire gauze or perforated metal, which latter is covered

page_text: by a metal plate. The height of the shade or globe is, by preference, such
that the chimney reaches to about the middle of the wire gauze top of the
said shade or globe.
By this arrangement the air with which the flame is fed enters the shade
or globe by the lower part of the wire gauze, while the vitiated air and
products of combustion pass off by the upper part of the wire gauze. The
flame of a paraffin oil or other volatile oil lamp; constructed in the manner
described, is undisturbed by currents of air, which would produce in the
ordinary lamp great flickering or unsteadiness in the flame. The prevention
of the access of air at or near the burner'may also be effected by making the
lower edge of the shade or globe rest on the top of the reservoir.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Abraham Follett Osler in the Great Seal Patent Office on
the 80th January 1866.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ABRAHAM
FOLLETT OSLER, of Birmingham, in the County of Warwick, Manufacturer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Seventh day of August, in the year of our Lord
One thousand eight hundred and sixty-five; in the twenty-ninth year of Her
reign; did; for Herself; Her heirs and successors, give and grant unto
me, the said Abraham, Follett Osler, Her special licence that J, the said
Abraham Follett Osler, my executors, administrators, and assigns, or such
others as I; the said Abraham Follett Osler, my executors, administrators,
and assigns, should at any time agree with, and no others, from time to time
and at all times thereafter during the term therein expressed, should and
lawfully might make, use, exercise, and vend, within the United Kingdom
of Great Britain and Ireland, the Channel Islands, and Isle of Man, an
Invention for "IMPROVEMENTS IN LAMPS FOR BURNING PARAFFIN OIL AND OTHER
VOLATIEB OILS," upon the condition (amongst others) that I, the said Abraham
Follett Osler, my executors or administrators, by an instrument in writing
under my, or their, or one of their hands and seals, should particularly
describe and ascertain the nature of the said Invention, and in what manner
the same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately after the
date of the said Letters Patent:

page_text: NOW KNOW YE, that I, the said Abraham Follett Osler; do hereby
declare the nature of the said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and by
the following statement thereof, that is to say:-
My Invention consists of the improvements, herein-after described, in lamps
for burning paraffin oil and other volatile oils, and has for its object the pre-
vention of the flickering or unsteadiness of the flame, which is produced by
currents of air in the said lamps as ordinarily constructed.
In making, according to my Invention, a lamp for burning paraffin oil or
other volatile oil, I construct and arrange the parts in the following manner:
In the said lamps, as ordinarily manufactured, the gallery on which the shade
or globe is supported, and sometimes also the part underneath the said gallery,
is made of perforated metal; I make the said parts of unperforated metal, so
that no air can enter the globe or shade at those parts. The shade or globe
is surmounted by a conical or other shaped prolongation of wire gauze or
perforated metal, which latter is covered by a metal or earthenware plate, the
height of the shade or globe is, preference, such that the chimney reaches
to about the middle of the wire gauze top of the said shade or globe.
By this arrangement the air, with which the flame is fed enters the shade
or globe by the lower part of the wire gauze, while the vitiated air and
products of combustion pass off by the upper part of the wire gauze. The
flame of a paraffin oil or other volatile oil lamp, constructed in the manner
described, is undisturbed by currents of air which would produce in the
ordinary lamp great flickering or unsteadiness in the flame. The prevention
of the access of air at or near the burner may also be effected by making the
lower edge of the shade or globe rest on the top of the reservoir.
Having explained the nature of my Invention I will proceed to describe,
with reference to the accompanying Drawing, the manner in which the same
is to be performed.
Figure 1 represents in elevation, and Figure 2 in section the body of a lamp
for burning paraffin oil or other volatile oil, containing my improvements;
Figure 3 is a plan of the conical prolongation of the shade or globe; and
Figure 4 is a plan of the gallery and burner, drawn to a larger scale. The
same letters indicate the same parts in each Figure.
a is the reservoir of the lamp containing the paraffin oil or other volatile
oil, the said reservoir being fixed upon a pillar or support in the usual way;
b is the burner of the lamp; c, the gallery, upon which the shade or globe d
is supported; and e is, the chimney: The said gallery c, as well as the metal
of the part below the said gallery, are unperforated, as represented, so that no

page_text: air enters the shade or globe d at the said gallery or below it; f is the conical
prolongation of wire gauze or perforated metal surmounting the shade or
globe d, the said prolongation being covered by. a plate g of the form repre-
sented. The air for supporting the combustion of the flame enters the space
between the globe d and chimney e by the lower part of the perforated pro-
longation f, and enters the burner at the perforations in the side thereof, as
indicated by arrows, while the vitiated air and products of combustion pass
off at the upper part of the perforated prolongation fat a point above the top
of the chimney e. The flame of the lamp is thus undisturbed by currents of
air, and great steadiness in the flame results...
Having now described the nature of my Invention, and the manner in which
the same is to be performed, I wish it to be understood that I do not limit
myself to the precise details herein described and represented in the Drawing,
as the same may be varied without departing from the nature of my
Invention; but I claim, as my Invention, the improvements in lamps for
burning paraffin oil and other volatile oils, herein-before described and illus-
trated in the accompanying Drawing, that is to say, the construction and
arrangement or combination of the parts of the said lamps, substantially in
the manner described and illustrated, whereby the air for the support of the
combustion of the lamp is made to pass through a perforated prolongation of
the top of the shade or globe, and the flickering or unsteadiness of the flame
produced by currents of air thus prevented.
In witness whereof, I, the said Abraham Follett Osler, have hereunto'
set my hand and seal, this Twenty-ninth day of January, in the year
of our Lord One thousand eight hundred and sixty-six.
Witness,
T. H. RYLAND.
ABRAHAM FOLLETT OSLER. (L.S.)