BE USED FOR COOKING, HEATING, AND LIGHTING PURPOSES
Year: 1873

page_text: LETTERS PATENT to George Tomlinson Bousfield, of Sutton, in the
IMPROVEMENTS IN LAMPS TO
County of Surrey, for the Invention of
BE USED FOR COOKING, HEATING, AND LIGHTING PURPOSES."-A communi-
cation from abroad by Hector Mackinnon, of the City of Toronto,
in the County of York, in the Province of Ontario, and Dominion of
Canada Machinist
PROVISIONAL SPECIFICATION left by. the said George Tomlinson
Bousfield at the Office of the Commissioners of Patents, with
his Petition, on the 27th June 1873.
I, GEORGE TOMLINSON BOUSFIELD, of Sutton, in the County of
Surrey, do hereby declare the nature of the said Invention for “Improve-
MENTS IN LAMPS TO BE USED FOR COOKING, HEATING, AND LIGHTING PURPOSES,"
to be as follows:-
The object of this Invention is to supply oxygen direct to the flame
of a lamp sufficient in quantity to cause the complete combustion of all
the obnoxious gases usually thrown off therefrom, producing a brighter

page_text: light for illuminating purposes, and rendering the flame so pure that
the most delicate meat can be cooked over it without being tainted in
the slightest degree. A stand and cover or chimney, is also employed
for the flame, by which the cooking utensils can be held over the flame,
while at the same time full benefit from the lamp as an illuminator is |
secured.
Figure 1 is a cross section of the improved lamp as applied for cooking
purposes; Figure 2 is likewise a cross section, but through a line at
right angles to Figure 1. These Figures exhibit the Invention as
adapted for cooking, but its main feature, viz., the manner in which
oxygen is supplied to the flame can be applied to any description of
lamp, as will be readily understood.
A is the oil reservoir, which is covered by the plate which forms the
bottom of the water vessel or reservoir B above the same; C, C, are
the box openings provided with hinged covers, which may be opened 1
when it is necessary to recover the wick, which may by accident have
slipped from the teeth of the raising and lowering device. The rims of
the boxes covering these openings extend upward beyond reach of the
water in the water vessel.
'a, a, are the oil wicks surrounded by the tubes 1, 1. These wicks are
very wide, and are composed of any porous material, fibrous or textile.
The tubes have slots cut into them on one side to allow the toothed
wheels b, b, b, to pass through and engage the oil wick which is to be
lowered or raised to increase or diminish the flame.
There are several of the toothed wheels arranged on rods, which have s
attached to their ends thumbscrews to be handled in raising or lowering
the oil wicks. On both sides of the oil wick tubes are the series of
tubes f. surrounding and containing the water wicks. These wicks
proceed from and lie in the water reservoir B, in which water should
always be kept, and are carried by the tubes up immediately against the
perforated plate E. The metal disc N rests on a perforated base E,
which is supported either by the wick tubes or by legs which rest on
the bottom of the water vessel.
The chimneys D, D, are held in their places by a rod or bolt passing
between them vertically, the same being secured to the lower plate N
and upper plate G; these chimneys D have openings d, d, which may

page_text: be closed up when necessary by mica or glass plates, which slide
vertically. F is a cast-iron stand for supporting the oven I, is shewn
by dotted lines in Figure 1; of course this stand is made for holding a
gridiron or any kind of utensil over the lamp, and has a hole in its
centre, so that the full heat of the lamp acts directly on the said
utensil; H is a tube extending obliquely from the side of the oil
reservoir A, through which the oil is poured to supply the same.
tube has a close fitting cap to exclude dust, &c.
The
As stated at the commencement of this description the main object
of the Invention is to supply oxygen sufficient in quantity to cause the
complete combustion of all the obnoxious gases generated in lamps as
now commonly constructed; this object is attained by the water wicks
contained in the tubes f; they convey the water by capillary attraction
from the reservoir B up on each side of the oil wicks, and when the
latter wicks are lighted the heat therefrom generates the water thus
conducted into steam, which rises and penetrates through the perforated
disc N, diffusing the oxygen contained therein directly on to the flame;
producing, in combination with the air admitted, also through the
disc N, the complete combustion. This principle can be applied to
lamps of every description.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said George Tomlinson Bousfield in the Great Seal
Patent Office on the 24th December 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
TOMLINSON BOUSFIELD, of Sutton, in the County of Surrey, send
greeting.
:
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-seventh day of June, in tho.
year of our Lord One thousand eight hundred and seventy-three, in the
thirty-seventh year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto me, the said George Tomlinson
Bousfield, Her special license that I, the said George Tomlinson
Bousfield, my executors, administrators, and assigns, or such others as
I, the said George Tomlinson Bousfield, my exccutors, administrators,
-

page_text: 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 TO BE USED FOR COOKING,
HEATING, AND LIGHTING PURPOSES," a communication to me from abroad by
Hector Mackinnon, of the City of Toronto, in the County of York, in
the Province of Ontario, and Dominion of Canada, Machinist, upon
the condition (amongst others) that I, the said George Tomlinson
Bousfield, 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.
NOW KNOW YE, that I, the said George Tomlinson Bousfield, 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:―
The object of this Invention is to supply oxygen direct to the flame
of a lamp, sufficient in quantity to cause the complete combustion of all
the obnoxious gases usually thrown off therefrom, producing a brighter
light for illuminating purposes, and rendering the flame so pure that
the most delicate mcat can be cooked over it without being tainted in
the slightest degree. A stand and cover or chimney is also employed.
for the flame, by which the cooking utensils can be held over the flame,
while at the same time full benefit from the lamp as an illuminator is
secured.
Figure 1 is a cross section of the improved lamp as applied for cooking
purposes; Figure 2 is likewise a cross section, but through a line at
right angles to Figure 1. These Figures exhibit the Invention as
adapted for cooking, but its main feature, viz., the manner in which
oxygen is supplied to the flame can be applied to any description of
lamp, as will be readily understood.
A is the oil reservoir, which is covered by the plate which forms the
bottom of the water vessel or reservoir B above the same; C, C, arc
the box openings provided with hinged covers, which may be opened

page_text: when it is necessary to recover the wick, which may by accident have
slipped from the teeth of the raising and lowering device. The rims of
the boxes covering these openings extend upward beyond reach of the
water in the water vessel.
a, a, are the oil wicks surrounded by the tubes 1, 1. These wicks are
very wide, and are composed of any porous material, fibrous or textile.
The tubes have slots cut into them on one side to allow the toothed
wheels b, b, b, to pass through and engage the oil wick, which is to be
lowered or raised to increase or diminish the flame.
There are several of the toothed wheels arranged on rods, which have
attached to their ends thumbscrews to be handled in raising or lowering
the oil wicks. On both sides of the oil wick tubes are the series of
tubes surrounding and containing the water wicks. These wicks
proceed from and lic in the water reservoir B, in which water should
always be kept, and are carried by the tubes up immediately against the
perforated plate E. The metal disc N rests on a perforated base E,
which is supported either by the wick tubes or by legs, which rest on
the bottom of the water vessel.
The chimneys D, D, are held in their places by a rod or bolt passing
between them vertically, the same being secured to the lower plate N
and upper plate G. These chimneys D have openings d, d, which may
be closed up when necessary by mica or glass plates, which slide
vertically. F is a cast-iron stand for supporting the oven I, which is
shewn by dotted lines in Figure 1; of course this stand is made for
holding a gridiron or any kind of utensil over the lamp, and has a holo
in its centre, so that the full heat of the lamp acts directly on the said
utensil; I is a tube extending obliquely from the side of the oil
reservoir A, through which the oil is poured to supply the same.
tube has a close fitting cap to exclude dust, &c.
The
As stated at the commencement of this description the main object
of the Invention is to supply oxygen sufficient in quantity to cause the
complete combustion of all the obnoxious gases generated in lamps as
now commonly constructed; this object is attained by the water wicks
contained in the tubes f; they convey the water by capillary attraction
from the rescrvoir B up on cach side of the oil wicks, and when the
latter wicks are lighted the heat therefrom generates the water thus
conducted into steam, which rises and penetrates through the perforated

page_text: disc N diffusing the oxygen contained therein directly on to the flame,
producing, in combination with the air admitted, also through the
disc N, the complete combustion. This principle can be applied to lamps
of every description.
In witness whereof, I, the said George Tomlinson Bousfield,
have hereunto set my hand and seal, this Twenty-third day of
September, in the year of our Lord One thousand eight hundred
and seventy-three.