An Improved Fumigator for Destroying Insects on Plants, and for similar purposes.
Year: 1892

page_text: Date of Application, 26th July, 1892
Complete Specification Left, 26th Apr., 1893-Accepted, 27th May, 1893
PROVISIONAL SPECIFICATION.
An Improved Fumigator for Destroying Insects on Plants, and for
similar purposes.
1, ROBERT CAMPBELL of Green Street, Stretford Manchester Insecticide
Manufacturer, do hereby declare the nature of this invention to be as follows:-
The object of this invention is to produce a simple and reliable fumigator for
effectually destroying insects on plants and for other similar purposes.
This invention consists in the combination of a system of air passages or tubes
which act as chimneys together with prepared or ordinary tobacco cloth, paper,
rope, stems, leaves or other suitable substance chemically or otherwise prepared
for the destruction of insect life, by fumigation.
The air passages or tubes, which act as chimneys may be formed of any shape in
section, for instance round, square, triangular, hexagon, octagon, or produced by
corrugating the material of which they are composed.
They may be made of any kind of paper, fibrous, or woven substance, which
when suitably prepared will burn without flames.
The tobacco cloth, paper, rope, stems, leaves, or other suitable substance is
interposed between and amongst the air tubes or passages and may be either in one
or more length or lengths, and either continuous or at intervals and the whole
will be bound up into a packet or bundle which may be of any shape or length,
and secured by wire, twine, sheet metal of any kind or by a non-inflammable
paper or cloth.
The air passages or tubes are left open at both ends and when the packet or
bundle before mentioned is placed or suspended in an upright position and lit at
the lower end the draught will be sufficient, up through the air passages or tubes,
to keep the packet or bundle burning without flames.
Dated this 23rd day of July 180
ROBT. CAMPBELL.
COMPLETE SPECIFICATION.
An Improved Fumigator for Destroying Insects on Plants, and for
similar purposes.
I ROBERT CAMPBELL of 2 Green Street, Stretford, Manchester, in the County
of Lancaster, Insecticide Manufacturer, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed to he particularly described
and ascertained in and by the following statement, that is to say :—
My invention relates to means for fumigating and consists of improvements in a
former invention for which Letters Patent Number 5307 of the year 1890 have
been granted to me.
In the production of a fumigator in accordance with such former invention a
sheet of thick paper was treated with an insect poison solution and was attached
to a sheet of corrugated or crimped paper and the combination was coiled into the
form of a cylindrical roll. In my present invention I dispense with the cementing
of the prepared paper to the crimped material and with the use of paper prepared
in the manner set forth in my former invention and I make use of ordinary tobacco
cloth or of the tobacco paper rope or other material which is ordinarily used in
the destruction of insect life by fumigation or I use tobacco stenis or leaves or
material of the indicated nature specially treated with any suitable preparation of
tobacco or of tobacco and other insect poison.

page_text: When the object of the fumigation is not to destroy insects 1 use paper cloth
or material treated with disinfecting or other preparations adapted to produce the
desired result.
I form the selected material into a package along with thick paper corrugated
or crimped or otherwise prepared in such a manner as to form air passages extending
through the package from end to end. The package is surrounded by an envelope
or casing which may consist of paper coated with asbestos paint as mentioned in the
Specification of my former invention or may be otherwise made of
material
adapted or prepared to resist the action of fire to a suitable extent the intention
being that the contents of the envelope shall smoulder away within the envelope
without bursting into flame.
In the production of the improved fumigator I prefer to use material similar to
what is used for packing purposes, such material consisting of crimped paper backed
with plain or uncrimped paper. Upon a piece of this material I place a layer of
tobacco paper or other selected fumigating material and I roll up the combination
and secure within an outer envelope or casing as when carrying into effect my
former invention.
I consider this method of forming the package to be the most convenient but I
do not confine myself to the formation of a cylindrical coil as the combination of
materials might be folded to form a package of a form other than cylindrical. If
preferred the crimped paper might be treated with a tobacco preparation either
before or after being crimped and be used either with or without the ordinary
tobacco paper or material.
I prefer to apply a perforated cap upon the end of the fumigator which is intended
to be the upper end when the fumigator is in use in order to check the tendency
for such upper end to burst into flame or to be consumed too rapidly when the
fumigator is nearly spent. In practice I use a piece of prepared paper of the kind
used for the outer envelope such capping paper being perforated with a number of
holes to permit of the escape of the smoke. This cap also regulates the speed of
combustion so that the duration of the fumigation may be lengthened by restricting
the number or collective area of the holes in the cap.
As the object of the use of crimped paper is to provide for the upward flow of
air and smoke through the fumigator I do not confine myself to the use of crimped
paper so long as the paper is so folded creased or shaped as to form air passages
extending from end to end of the fumigator or package nor do I confine myself to
the use of paper for the purpose so long as a material is used which is adapted to
smoulder along with and at about the same rate as the combined tobacco paper or
fumigatory material but I consider thick paper of the description made from straw
wood or similar material to be the most suitable.
The improved fumigator is intended to be suspended with the air passages in
vertical positions or thereabouts and to be lighted at the lower end as in the case
of my former invention and may in the same way be provided with a wire or with
suitable means to facilitate suspension.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed declare that what 1
claim is.
1) The fumigator consisting of the crimped or corrugated paper coiled into a
roll along with tobacco paper or with other ordinary tobacco treated material
enclosed within a non-combustible envelope or casing and adapted to be suspended
and lighted at the lower end as and for the purpose set forth.
2) A fumigator consisting of ordinary tobacco paper or other like material in
combination with paper so crimped folded pressed or shaped as that when the com-
bination is rolled up or folded or made up into a package air passages are constituted
such air passages extending through from end to end of the package as and for the
purpose set forth.
3) A. fumigator consisting of paper cloth or other material which has been treated

page_text: with a preparation of tobacco or with other suitable preparation formed into a roll
or package along with crimped pressed or shaped paper or similar material adapted
to form air passages extending through the package the whole being surrounded
by a casing of non-combustible paper or material and adapted to be used in the
5 manner and for the purpose set forth.
Dated this 25th day of April 1893
E. K. DUTTON & Co.,
5, John Dalton Street, Manchester, Agents.