Year: 1886

page_text: Date of Application, 25th Nov, 1886
Complete Left, 24th Aug:, 1887
Complete Accepted, 4th Nov., 1887
I, GEORGE RICHARD POSTLETHWAITE of the Firm of Arundale and Postlethwaite
of Stantiforth Street Birmingham in the County of Warwick, Manufacturer, do hereby
declare the nature of this invention to be as follows:-
My invention relates particularly to what are commonly known as hurricane lamps or
lanterns, such as street lamps, ships' lamps, railway carriage roof lamps, and other
lamps and lanterns to be used in exposed situations.
My improvements have especial reference to hydro carbon oil lamps, and I will
describe them in connection with an ordinary street lamp.
The framing and glazed parts of the lamp are of the ordinary construction, and
preferably made or provided with air tight joints for preventing the ingress of wind
or air, other than through a proper opening, which is made through the bottom
thereof.
Air is only admitted to the inside of the lamp through a device or baffle box, which
compels the air entering, to take a circuitous course; and moreover, the said air on.
entering, is first made to impinge upon the bottom of the oil container or reservoir,
which forms as it were, an inside top to the baffle box or expedient for breaking up
wind gusts.
This box consists or is made up essentially of three annular rings arranged concentric-
ally within each other, so as to form two annular spaces, of which the inner ring forms
the division or partition between the other two, and which said annular rings are of a
depth about equal to the depth of the box to be made, but with the inside rings
graduated, or made a little shorter than the outside ring; so that the top which comes
upon them, is made to slope inwards, with the oil container resting at the extreme edge;
and at this edge, an upright flange is provided, for keeping the oil container, which
carries the burner in its place.
The box has an entirely closed bottom with the exception of the piercing in its
middle, corresponding to the hole in the bottom of the lamp, and it is through this
central piercing, that cold air is admitted into the central portion of the box, and
made to impinge upon the underside of the oil container, which thereby keeps the
container and oil therein perfectly cool.

page_text: The sides of the annular rings are pierced with suitable sized holes, through which
air is admitted to the inside of the body of the lamp.
The piercings on the outsides and upon the insides, are covered with finely meshed
wire gatze; and besides the wire gauze coverings on the inside aforesaid, plain
guards open at top and bottom, are placed in front of, or before the piercings, thereby
preventing the ingress of wind gusts, other than by a circuitous course.
The piercings in the annular rings are so disposed with respect to each other, that
the piercing of the one comes in front of the unpierced part of the other; so that the
air in passing therethrough, has to take a zig-zag course.
The lamp bottom is fitted with jointed armis, for keeping the appliance and the lamp
in a central position.
Thus my improvements consist essentially in a means of breaking up wind gusts
or strong currents of air which are prevented from entering the lamp other than in
an zig-zag manner; and secondly, in placing the oil container above the appliance, so
that the cold air on entering, shall first impinge upon the underside of a metallic oil
container, so as to thereby keep it cool.
When in use, the gust breaking up box with the oil container above it, is placed
centrally within the lamp, and with the radial arms keeping it in position, and with
the opening through its bottom coming before the hole in the bottom of the lamp.
Air first enters through the hole in the bottom and into the central space of the box,
and from thence through either the top. or bottom openings of the plain guard, and
then through the front piercings into the first annular space, and then through the
piercings in the middle partition, and finally emerging into the lamp, through the
piercings in the outsides.
By constructing the entrances to lamps as described, wind or gusts of air are
prevented from gaining access to the interior of a lamp, by being compelled to take a
circuitous or zig-zag course.
The application of my invention to gas lamps, differs in no essential respect from its
application to an oil lamp as herein described.
Deted this Twentieth day of November 1986

page_text: COMPLETE SPECIFICATION.
Improvements in Hurricane and other like Lamps and Lanterns.
I, GEORGE RICHARD POSTLETHWAITE of the firm of Arundale and Postlethwaite of
Staniforth Street Birmingham in the County of Warwick, Manufacturer, 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 :-
My invention relates particularly to what are commonly known as hurricane lamps
or lanterns, such as street lamps, ship's lamps, railway carriage roof lamps, and other
lamps and lanterns to be used in exposed situations.
My improvements have especial reference to hydro-carbon oil lamps, and I will
describe them in connection with an ordinary street lamp.
The framing and glazed parts of the lamp are of the ordinary construction, and
preferably made or provided with air-tight joints, for preventing the ingress of wind
or air, other than through a proper opening, which is made through the bottom
thereof.
b
Air is only admitted to the inside of the lamp through a device or baffle box,
which compels the air entering, to take a circuitous course; and moreover, the said
air on entering, is first made to impinge upon the bottom of the oil container or
reservoir, which forms as it were, an inside tap to the baffle box or expedient for
breaking up wind gusts.
This box consists, or is made up essentially of three annular rings, arranged
concentrically within each other, so as to form two annular spaces, of which the inner
ring forms the division or partition between the other two, and which said annular
rings are of a depth about equal to the depth of the box to be made, but with the
inside rings graduated, or made a little shorter than the outside ring; so that the top
which comes upon them is made to slope inwards, with the oil container resting at
the extreme edge; and at this edge, an upright flange is provided, for keeping the
oil container which carries the burner, in its place.
The box has an entirely closed bottom, with the exception of the piercing in its
middle, corresponding to the hole in the bottom of the lamp, and it is through this
central piercing, that cold air is admitted into the central portion of the box, and
made to impinge upon the underside of the oil container, which thereby keeps the
container and oil therein perfectly cool.
The sides of the annular rings are pierced with suitable sized holes, through which
air is admitted to the inside of the body of the lamp.
The piercings on the outsides and upon the insides, are covered with finely meshed
wire gauze; and besides the wire gauze coverings on the inside aforesaid, plain
guards open at top and bottom, are placed in front of, or before the piercings, thereby
preventing the ingress of wind gusts, other than by a circuitous course.
The piercings in the annular rings are so disposed with respect to each other, that

page_text: the piercing of the one, comes in front of the unpierced part of the other; so that the
air in passing therethrough, has to take a zigzag course.
The lamp bottom is fitted with jointed arms, for keeping the appliance and the lamp
in a central position.
Thus my improvements consist essentially in a means of breaking up wind gusts, or
strong currents of air, which are prevented from entering the lamp other than in a
zigzag manner; and secondly, in placing the oil container above the appliance, so
that the cold air on entering, shall first impinge upon the underside of a metallic oil
container, so as to thereby keep it cool.
When in use, the gust breaking-up box with the oil container above it, is placed
centrally within the lamp, and with the radial arms keeping it in position, and with
the opening through its bottom, coming before the hole in the bottom of the lamp.
Air first enters through the holo in the bottom, and into the central space of the
box, and from thence through either the top or bottom openings of the plain guard,
and then through the front piercings, into the first annular space, and then through
the piercings in the middle partition, and finally emerging into the lamp, through the
piercings in the outsides.
By constructing the entrances to lamps as described, wind or gusts of air are
prevented from gaining access to the interior of a lamp, by being compelled to take a
circuitous or zigzag course.
The application of my invention to gas lamps, differs in no essential respect from
its application to an oil lamp as herein described.
I will now proceed to describe with reference to the accompanying drawing, the
manner in which the same is to be performed.
Figure 1 represents partly in elevation, and partly in vertical section a hurricane
lamp, constructed according to my invention. Figure 2 represents upon a smaller
scale, the same in connection with a street lamp. Figure 3 shows a complete
horizontal section of the said lamp upon the dotted lines A B figure 1.
The same letters of reference indicate corresponding parts in the several figures of
the drawing.
a is the oil container of the lamp, resting upon the top, and within an annular
sunken foot, of a wind guard, or baffle box b, which is so constructed and arranged,
that air in getting to the lantern c, for supplying combustion to the burner å, is
compelled to take a circuitous course.
This baffle box, consists of three annular rings 61, 62, 63, arranged concentrically
one within the other, so as to form two annular spaces, of which the inner ring 6,
forms a middle division or partition, between the two outer ones; and which said
annular rings, are of a depth equal to the height of the wind guard, or baffle box to
be made. The inner rings are made a little shorter than the outer one; so that the
top 64, is made to slope inwards, with the oil container resting at its extreme top
edge. The said oil container is kept in position, by an upright annular flange b³,
while its bottom 66, which is partially enclosed, is provided with a piercing 6', at or
about its middle, which corresponds and comes coincident to the hole e, in the bottom
of the lantern; and it is through these central openings, that cold air is admitted into
the chamber space 68 of the wind guard, and so make the said admitted air impinge,
or play upon the underside or bottom of the oil container a, which forms the top as it
were, to the said wind guard or baffle box.
By compelling the air for supplying combustion, to first impinge upon the bottom
of the container, the oil stored therein, is always kept perfectly cool, which is
unattainable in lamps as ordinarily constructed.
The sides of the annular rings 6', 63, 6, are pierced with holes e, e², e³, which are
covered with finely meshed wire gauze; and in addition to the wire gauze coverings
on the inside openings as aforesaid, hooded guards f open at their tops, are arranged
in front of the said inside piercings e; and which said open tops, are markod, and
are best seen in the sectional view figure 1, by which means, the ingress of wind
gusts are prevented from gaining access, to the annular spaces, enclosed by a circuitous
course.

page_text: The piercings e, e³, e³, in each of the rings, are arranged to come respectively
opposite the unpierced parts in the opposite rings; that is, the piercings of the
inner ring 6', are made to come opposite the unpierced parts in the inner ring bª,
while the unpierced parts in the said inner rings b² are made to come opposite the
piercings in the outer ring 68; and which said last named piercings, pass to the
inside of the lantern, or glass of a lamp; and by which arrangement of piercings,
the air in passing therethrough, has to take a zig-zag course.
The body of the lamp or the wind-guard, which supports the oil container, is or are
kept centrally in position, within the interior of a lantern, or other enclosure, by
radially disposed, and jointed arms g.
In supplying air for combustion, to the lamp, air first enters through the hole c*,
in the bottom of the lantern, and thence through the piercing 67, into the annular
chamber 68, impinging upon the underside of the container a, and from thence passes
through the open tops f of the hooded guards f, descending down the back of the
said guard, through the gauze piercing e, into the annular space enclosed between
the rings 6 and 6, then through the gauze covered piercing into the annular space
enclosed between the rings 62, 63, and finally passing through the wire gauzed covered
piercing e³, into the lantern of the lamp, which then passes to the burner in the
ordinary way. The circuitous passage of the air, is also indicated by the arrows.
Instead of the air entering the lamp, only impinging upon, or made to come upon
the underside of the oil container, it may be made to circulate around the sides
or body.
The means of keeping cool the oil, may be used independent of the wind-guard; or
the wind guard may be used independent of the means for keeping the oil in the oil
container, cool.
Having now particularly described and ascertained the nature of my said invention,
and in what manner the same is to be performed, I declare that what I claim is.-
First. The means herein described and set forth, for breaking up, or preventing
the ingress of wind gusts, or otherwise regulating the admission of air into lantern
or other lamp enclosures, and to lamp burners, substantially as described and illus-
trated in the several figures.
Secondly. Combining with an oil container, or the burner of a lamp, a wind guard
or baffle box, substantially as and for the purpose as described and set forth.
Thirdly. Making the air which supplies combustion, or enters a lamp, first
impinge upon, or come in contact with the bottom or sides, or the bottom and sides
of an oil container, prior to the inward passage of the said air, and by which means,
the oil in the container, is kept cool, as described and set forth.
Fourthly Keeping lamps, oil containers or the like, in position, or centrally in
position, with respect to a lantern or other enclosure, by means of jointed and radially
disposed arms, rods or the like, marked g, as described and set forth.
Ninth day at Ananet EXXY
Talad the Ninth daw at Anonst EXXY
GEORGE RICHARD POSTLETHWAITE.
By Henry Skerrett,
Agent for Applicant.