Year: 1897

page_text: A communication from abroad by A PAITTI & Co., of Rome, Italy.
I, WILLIAM LLOYD WISE of 46 Lincoln's Inn Fields, in the County of London,
Consulting Engineer and Patent Agent do hereby declare the nature of this invention
to be as follows:-
According to this invention colophony and oxide of calcium are in admixture or
together subjected to the action of a liquid such as water or acidulated "water the
resulting chemical reaction causing evolution of gas which can be employed for
industrial purposes, such as lighting and heating, or in the production of motive
power.
As however this gas when used alone does not produce a very brilliant flame in
order to adapt it for the production of a brilliant light there is mixed with it acetylene
gas, or-gas produced from a mixture of carbide of calcium and carbonate of magnesia
or else there is added to the mixture of calcium oxide and colophony, carbide of
calcium, or carbide of calcium and carbonate of magnesia.
For the last named mixture the following proportions have been found suitable viz:
It is however to be noted that in carrying out this invention the proportions may
be varied according to requirement. Gas produced by the treatment of colophony
and oxide of calcium in admixture or together with liquid may further be carburetted,
or have increased illuminating properties imparted to it by any known method of car-
buretting as for example by passing the gas through volatile light petroleum oils,
such as benzine, or by impregnating it with other suitable hydro-carbons. For the
manufacture of gas as described any suitable apparatus may be employed, conveniently
the apparatus may resemble such as used for the production of ordinary illuminating
gas or of acetylene gas.

page_text: A communication from abroad by A. PIATTI & Co., of Rome, Italy.
I, WILLIAM LLOYD WISE of 46 Lincoln's Inn Fields, in the County of London,
Consulting Engineer and Patent Agent, 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 :-
According to this invention colophony and oxide of calcium (caustic lime) are in
admixture or together subjected to the action of a liquid such as water or acidulated
water the resulting chemical reaction causing evolution of gas which can be employed
for industrial purposes, such as lighting and heating, or in the production of motive
power.
As however this gas when used alone does not produce a very brilliant flame, in
order to adapt it for the production of a brilliant light there is mixed with it
acetylene gas, or gas produced by the action of water upon a mixture of carbide of
calcium and carbonate of magnesia, or else there is added to the mixture of calcium
oxide and colophony, carbide of calcium, or carbide of calcium and carbonate of
magnesia..
For the last named mixture the following proportions have been found suitable viz :
It is, however, to be noted that in carrying out this invention the proportions may
be varied according to requirement, also the proportions given may be by weight or
volume.
The oxide of calcium in the caustic state and the carbide of calcium are preferably
used in the form of blocks, about the size of walnuts, and the colophony in the form
of a fine powder. The carbide of calcium is laid at the bottom of the generator the
oxide of calcium above it and the powdered colophony is then placed on the top. The
water is gradually supplied from the bottom.
The addition of carbonate of magnesium to the mixture is for the purpose of render-
ing the flame more white or luminous. Gas produced as described by the treatment
of colophony and oxide of calcium in admixture or together with liquid may further
be carburetted, or have increased illuminating properties imparted to it by any
known method of carburetting as for example by passing the gas through volatile
light petroleum oils, such as benzine, or by impregnating it with other suitable
hydro-carbons. For the manufacture of gas as described any suitable apparatus may
be employed, conveniently the apparatus may resemble such as is used for the
production of ordinary illuminating gas or of acetylene gas.
Having now particularly described and ascertained the nature of the said inven-
tion and the manner in which the same is to be performed I declare that what I
claim is :-
1. The manufacture of gas by subjecting a mixture of colophony and oxide of
calcium to the action of a liquid such as water, (preferably acidulated), substantially
as described

page_text: 2. In the manufacture of gas as referred to in the preceding claim, increasing the
illuminating power of the gas by adding to the mixture of colophony and oxide of
calcium, carbide of calcium, or carbide of calcium and carbonate of magnesia, or by
carburetting the gas by any suitable known carburetting means, substantially as here-
inbefore described.
Dadth: 10th
L 1005
W. LLOYD WISE,
46 Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.