Year: 1895

page_text: Date of Application, 5th Jan., 1895
Complete Specification Left, 5th Oct., 1895-Accepted, 23rd Nov., 1895
This powder is mixed with water and the following reaction is obtained: hydro-
carbonates of copper and alumina are formed with the evolution of carbonic acid.
The properties possessed by this powder are made use of in the following
manner.
The powder having the composition already described is placed in any suitable
apparatus for delivering liquid in a spray under pressure, together with water
which should occupy about two thirds of the said apparatus; the reaction then
takes place and as soon as the discharge cock is opened the water charged with
the hydrocarbonate of copper and alumina in the desired proportion passes through
a spray pipe and is ejected onto the plants.
Hydrocarbonate of copper is one of the specific agents used for cryptogamic
diseases of the vine and other plants and the alumina which exists in a gelatinous
condition in the products of the reaction increases the adherence of the composition
on the plants to which it has been applied.
The carbonic acid gas which is violently set free in the liquid keeps the said
liquid in a state of continual agitation and finally collects in the upper part of the
closed vessel where it exerts on the liquid the pressure necessary for spreading or
spraying of the same.
This invention is not limited to the precise apparatus employed for delivering
the cupro-carbonic powder as any suitable apparatus may be employed in which the
desired reaction can be produced and the proportions above stated are merely
given by way of example and may be varied as desired.
The three substances already described may be replaced by their equivalents, for
instance sulphate of alumina may be replaced by a bi-sulphate of soda or potash
or the like. Instead of using the composition as a powder it may be used in an
agglomerated condition as for example in cakes.
Dated this 5th day of Janu 1905
:

page_text: This powder is mixed with water and the following reaction is obtained; hydro-
carbonates of copper and alumina are formed with the evolution of carbonic acid.
The properties possessed by this powder are made use of in the following
manner:
The powder having the composition already described is placed in any suitable
apparatus for delivering liquid in a spray under pressure together with water
which should occupy about two-thirds of the said apparatus; the reaction then
takes place and as soon as the discharge cock is opened the water charged with
the hydrocarbonate of copper and alumina in the desired proportiou passes through
a spray pipe and is ejected onto the plants.
Hydrocarbonate of copper is one of the specific agents used for cryptogamic
diseases of the vine and other plants and the alumina which exists in a gelatinous
condition in the products of the reaction increases the adherence of the composition
on the plants to which it has been applied.
The carbonic acid gas which is violently set free in the liquid keeps the said
liquid in a state of continual agitation and finally collects in the upper part of the
closed vessel where it exerts on the liquid the pressure necessary for spreading or
spraying of the same.
This invention is not limited to the apparatus employed for delivering the cupro-
carbonic powder as any suitable apparatus may be used in which the desired
reaction can be produced and the proportions above stated are merely given by
way of example and may be varied as desired. The three substances already
described may be replaced by their equivalents for instance sulphate of alumina
may be replaced by a bi-sulphate of soda or potash or the like. The sulphate of
copper may be dispensed with in the composition when the latter is employed
solely for giving carbonic acid gas under pressure in a spreading spraying or
pulverizing apparatus, the bi-carbonate of soda and the sulphate of alumina will
then alone be used in proper proportions in the composition of the powder. Instead
of using the composition as a powder, it may be used in an agglomerated condition
as for example in cakes.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I declare that what I claim is :-
1. A composition formed by a combination of substances for producing by the

page_text: action of water carbonic acid gas hydrocarbonate of copper and hydrocarbonate
of alumina substantially as and for the purposes herein before described.
2. The combination of sulphate of alumina, bicarbonate of soda and sulphate of
copper for producing with water the reactions described substantially as and for
the purposes hereinbefore set forth.
Dahin 4th date of Antober 1805
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents.