Improvements in the Manufacture or Production of Material for Fumigating Plants and the like.
Year: 1890

page_text: Date of Application, 14th June, 1890
Complete Specification Left, 11th Mar., 1891-Accepted, 25th Apr., 1891
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture or Production of Material for
Fumigating Plants and the like.
We, ISAAC SHIMWELL MCDOUGALL and JAMES THOMAS MCDOUGALL, both
of 10, Mark Lane, in the City of London, Manufacturing Chemists, do hereby
declare the nature of our said invention to be as follows:-
This invention has for its object to provide a material which when ignited and
allowed to burn slowly or smoulder will give off fumes or vapours which will dislodge
or kill insects but which are not injurious to plants. We have discovered that the
resinous pitchy or like incrustating matter which is either added during the process
of manufacture or which exists in the material hitherto used to absorb or hold
matter to be vapourized or caused to disseminate itself when the material ignited
is the matter which is injurious to plant life and this invention has for its object to
provide for the vapourizing or dissemination by burning or smouldering of materials
injurious to insect life without at the same time vapourizing or causing to be
disseminated with it resinous pitchy or like matter injurious to plant life.
According to this invention we take woody or vegetable material and we abstract
the resinous pitchy or other matters and leave only the cellular tissue or cellulose
and this we cause to absorb the material injurious to insect life only such for instance
as nicotine or the active principle of tobacco and we prefer to add also saltpetre or
equivalent matter to cause the material to ignite and to continue to burn or
smoulder so as to give off the fumes of the matter injurious to insect life. We
prefer that the material thus prepared shall be in the form of sheets but we do not
limit ourselves to any particular form. When ignited and caused to smoulder the
fume smoke or vapour which arises is that only of the matter or matters injurious
to insect life. The material may be ignited by placing it on hot embers or
otherwise as may be most convenient and if the plants to which it is to be applied
be in the open air they may be covered by a light fabric to confine the fume,
vapour or smoke and cause it to be properly effective upon the insect life on
the plants.
Dated this 14th day of June 1890.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improvements in the Manufacture or Production of Material for
Fumigating Plants and the like.
We, ISAAC SHIMWELL M°DOUGALL and JAMES THOMAS M°DOUGALL, both
of 10, Mark Lane, in the City of London, Manufacturing Chemists, 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 :-
This invention has for its object to provide a material which when ignited and
allowed to burn slowly or smoulder will give off fumes or vapours which will dislodge
or kill insects but which are not injurious to plants. We have discovered that the
resinous pitchy or like incrustating matter which is either added during the process
of manufacture or which exists in the material hitherto used to absorb or hold
matter to be vapourized or caused to disseminate itself when the material is ignited,
is the matter which is injurious to plant life, and this invention has for its object to
Price 41

page_text: provide for the vapourizing or dissemination by burning or smouldering of materials
injurious to insect life without at the same time vapourizing or causing to be
disseminated with it resinous pitchy or like matter injurious to plant life.
According to this invention we take cellulose, or woody or vegetable material
from which we have abstracted the resinous pitchy or other matters so as to leave
only the cellular tissue or cellulose, and this we cause to absorb the material
injurious only to insect life; such for instance as nicotine or the active principle of
tobacco and we prefer to add also saltpetre or equivalent matter to cause the
material to ignite and to continue to burn or smoulder so as to give off the fumes of
the matter injurious to insect life. We prefer that the material thuis prepared shall
be in the form of sheets but we do not limit ourselves to any particular form.
When ignited and caused to smoulder the fume smoke or vapour' which arises is
that only of the matter or matters injurious to insect life. The material may be
ignited by placing it on hot embers or otherwise as may be most convenient and if
the plants to which it is to be applied be in the open air they may be covered by a
light fabric to confine the fume, vapour or smoke and cause it to be properly
effective upon the insect life on the plants.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
:-
1. The manufacture of a material for fumigating plants or the like as hereinbefore
described.
2. As a new product a plant fumigating material consisting of cellulose or cellular
tissue impregnated with a material injurious to insect life.
Dated this 11th of March 1891.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, Agents.