improvements in Means for Effecting the Evolution of Sulphurous Acid for Disinfecting and Deodorizing.
Year: 1888

page_text: Date of Application, 30th Jan., 1888
Complete Specification Left, 15th Oct., 1888
Complete Specification Accepted, 16th Nov., 188
improvements in Means for Effecting the Evolution of Sulphurous
Acid for Disinfecting and Deodorizing.
I, JOHN HANSON, of Wakefield, in the County of York, Sewage Engineer, do
hereby declare the nature of this Invention to be as follows :-
The object of my Invention is to provide means whereby the evolution of sulphurous
acid may be readily effected at any place where it is required for disinfecting purposes.
It consists broadly in the provision of matters or powders which can be kept either
together or separately according to their constitution and be either mixed or applied at
any desired place to there evolve fumes of sulphurous acid. According to my Inven-
tion I use a Sulphite or a substance containing a Sulphite and an acid or a bi-sulphate
or a substance containing a bi-sulphate. When my object is to provide matters or
powders which when mixed together will evolve sulphurous acid I take as one matter
or powder a substance containing a sulphite such as for instance alkali waste in which
the sulphur compounds have been oxidized into sulphite and there is little or no
sulphide and I take as the other matter or powder an absorbent material saturated
with or holding an acid which when added to the first powder will take the place of
the sulphurous acid of the first powder and cause it to be given off. These two powders
when mixed together will thus evolve the desired fumes for disinfecting and deodorizing
and if water be added the evolution will be more energetic.
If I desire to have a mixture of powders which can be kept together and only give
off the necessary fumes on their addition to water I use a sulphite or a bi-sulphite such
as those of soda or potash and a bi-sulphate such as those of soda or potash. These
powders when added to water will give off the necessary fumes.
Dated the 204 T 1000
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C.,
Agents for the said John Hanson.

page_text: Improvements in Means for Effecting the Evolution of Sulphurous
Acid for Disinfecting and Deodorizing.
I JOHN HANSON of Wakefield in the County of York Sewage Engineer 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
The object of my Invention is to provide moans whereby the evolution of sulphurous
acid may be readily effected at any place where it is required for disinfecting or
deodorizing purposes. My said Invention consists broadly in the provision of matters
or powders which can be kept either together or separately according to their con
stitution and be mixed or applied at any desired place to there evolve fumes of
sulphurous acid. According to my Invention 1 use a sulphite or a substance con-
taining a sulphite and an acid or a bi-sulphate or a substance containing a bi-sulphate.
When my object is to provide matters or powders which when mixed together will
evolve sulphurous acid I take as one mattor or powder a substance containing a
sulphite such as for instance alkali waste in which the sulphur compounds have been
oxidized into sulphite and there is little or no sulphide and I take as the other matter
or powder an absorbent material (such for instance as Kieselgühr or
( fossil meal")
saturated with or holding an acid which when added to the first powder will take the
place of the sulphurous acid of the first powder and cause the said sulphurous acid to
be given off. (The acid I prefer to use to charge the absorbent is sulphuric acid.)
These two powders when mixed together will thus evolve the desired fumes
for disinfecting and deodorizing and if water be added the evolution will be more
energetic.
If I desire to have a mixture of powders which can be kept together and only give
off the necessary fumes on their addition to water I use a sulphite or a bi-sulphite
such as those of soda or potash and a bi-sulphate such as those of soda or potash.
These powders when added to water will give off the necessary fumes:
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:-
1. The employment in or for disinfecting or deodorizing of a sulphite or a substance
containing a sulphite and an acid or a bi-sulphate or a substance containing a
bi-sulphate substantially as herein before explained.
2. In or for disinfecting or deodorizing the employment of alkali waste in which
the sulphur compounds have been oxidized and of an absorbent material saturated
with acid for conjoint use substantially as herein before described.
3. For disinfecting or deodorizing the conjoint use of sulphite or bi-sulphite of
soda or potash and bi-sulphate. of soda or potash substantially as herein before
described.