An Improved Compound for the Generation of Carbon Dioxide, and suitable for use in Gasogenes, Fire-extinguishers, and similar Apparatus.
Year: 1890

page_text: Date of Application, 20th Jan., 1890
Complete Specification Left, 20th Oct., 1890-Accepted, 6th Dec., 1890
PROVISIONAL SPECIFICATION.
An Improved Compound for the Generation of Carbon Dioxide, and
suitable for use in Gasogenes, Fire-extinguishers, and similar
Apparatus.
I, HARRY GRIMSHAW of the Canal Chemical Works Clayton Manchester in the
County of Lancaster, Chemical Manufacturer, do hereby declare the nature of this
invention to be as follows:-
This invention relates to a new compound to be used for the generation or pro-
duction of carbon dioxide (carbonic acid) and which is especially adapted for use in
gasogenes, fire extinguishers and similar apparatus.
The new compound consists of an admixture of a carbonate or a bicarbonate of
an alkali or of an alkaline earth with a suitable soluble bisulphate or soluble bi-
phosphate.
The constituent materials may be mixed in the dry form and be employed in the
same manner as the ordinary mixture of sodium bicarbonate and tartaric acid is at
present used for a like purpose, or they may be powdered and slightly damped and
granulated by the aid of heat in the same manner as the so called "Citrate of
Magnesia."
Dated this 18th day of January A D 1890
WILLIAM E. HEYS,
Agent for the Applicant.
COMPLETE SPECIFICATION.
An Improved Compound for the Generation of Carbon Dioxide, and
suitable for use in Gasogenes, Fire-extinguishers, and similar
Apparatus.
1, HARRY GRIMSHAW of the Canal Chemical Works Clayton Manchester in the
County of Lancaster, Chemical 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:-
This invention relates to a new compound to be used for the generation or pro-
duction of carbon dioxide, (carbonic acid or carbonic anhydride), and which is
especially adapted for use in gasogenes and fire extinguishers and similar apparatus.
The improved compound made according to this invention, consists of a mixture
of a carbonate or bicarbonate of an alkali or of an alkaline earth, or a mixture of
such carbonates or bicarbonates, with a suitable soluble bisulphate or soluble
biphosphate.
The substances constituting the compound are mixed together in the proportions
indicated by their molecular weights or thereabouts, allowances being made for
impurities and the presence of moisture or water.
The constituent materials may be mixed in the dry powdered form and they may
be employed in the same manner as the ordinary mixture of bicarbonate of soda and
tartaric acid which is at present commonly used for like purposes; or the powdered
materials may be mixed and slightly damped, and be granulated by the aid of heat
in a similar manner to that adopted in the preparation of the so-called "Citrate of
Magnesia."
I do not limit myself to any particular carbonate or bicarbonate of alkali or alkaline
earth, but, because of its cheapness and ready solubility, I prefer to employ the
bicarbonate of soda. For similar reasons, I prefer also to employ the bisulphate of
soda as the other element of the compound.

page_text: 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-
An improved compound for the generation or production of carbon dioxide, said
compound consisting of a mixture of a carbonate or a bicarbonate of an alkali or of
an alkaline earth with a similar bisulphate or biphosphate, substantially as and for the
purposes herein before described.
Dated this 17th day of Untaber A T) 1890
WILLIAM E. HEYS,
Agent for the Applicant.