Improved Means of Purifying the Air of Drains and Sewers, or for Suppressing Noxious Vapours Generally.
Year: 1895

page_text: Date of Application, 28th Sept., 1895
Complete Specification Left, 29th June, 1895-Accepted, 1st Aug., 1896
TRUY DIVNAL DI MULTICATION.
Improved Means of Purifying the Air of Drains and Sewers, or for
Suppressing Noxious Vapours Generally.
I, ROBERT HARRIS REEVES, of Cedardale, Putney Bridge Road, Putney, Surrey,
Sanitary Engineer do hereby declare the nature of this invention to be as
follows:-
:-
My invention relates to :-
1. The mixing of sulphuric acid with manganate of soda in a dry state instead
of wet whereby a larger volume of gas is generated.
2. The mixing of carbon wood dust or other such material with the soda so as to
increase the action of the sulphuric acid on it.
3. The mixing of the same in regulated quantities or by hand as desired in sewers
or spaces requiring the atmosphere purified."
For the purpose of my invention, the generating of gases (oxygen and sulphurous
acid) consists in mixing manganate of soda in a dry powdered state with sulphuric
acid, also by mixing carbon or fine wood or other dust with the manganate of soda
or any similar material, so that the action of the acid at once comes in contact
with the manganate of soda instead of mixing the manganate of soda in solution
with the acid.
By this method, a much larger percentage of gases is given off which destroys
those impure gases given off from sewage, or those contained in the atmosphere of
confined spaces.
The manganate of soda or compound dry mixture is placed in sewers drains spaces
or openings leading to them preferably on a flat disc, slab, or flat vessel. The
sulphuric acid is then allowed to drop on the manganate preparation (or manganate
of soda dry with itself) when by the action of one chemical on the other, large
volumes of gases are generated which in transit to openings purify all foul air.
After these gases are evolved as above described water is mixed with the residue
mixture by which it is formed into a strong solution of permanganate acid. This
treats the sewage or other matter flowing through drains or culverts.
The mixing of these chemicals for producing gases and permanganic acid may be
either done by hand from acid proof bottles, or vessels, or by a distributor of the
powdered chemicals in regulated quantities on which the sulphuric acid drops. The
motive power for working the distributor may be supplied by the water which mixes
the chemicals.
Dated this 28th day of September 1895.
H. GARDNER,
Patent Agent, 166 Fleet Street, London,
Agent for the said Robert Harris Reeves.

page_text: Improved Means of Purifying the Air of Drains and Sewers, or for
Suppressing Noxious Vapours Generally.
I, ROBERT HARRIS REEVES of Cedardale, Putney Bridge Road, Putney, Surrey,
'Sanitary 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 stateinent :-
My invention relates to
1. The mixing of sulphuric acid with manganate of soda in a dry state instead of
wet whereby a larger volume of gas is generated.
2. The mixing of carbon wood dust or other such material with the soda so as to
increase the action of the sulphuric acid on it.
3. The mixing of the same in regulated quantities or by hand as desired in sewers
or spaces requiring the atmosphere purified.
For the purpose of my invention, the generating of gases (oxygen and sulphurous
acid) consists in mixing manganate of soda in a dry powdered state with sulphuric
acid, also by mixing carbon or fine wood or other dust with the manganate of soda
or any similar material, so that the action of the acid at once comes in contact
with the manganate of soda instead of mixing the manganate of soda in solution
with the acid.
By this method a much larger percentage of gases is given off which destroys
those impure gases given off from sewage or those contained in the atmosphere of
confined spaces.
The manganate of soda or compound dry mixture is placed in sewers, drains, spaces
or openings leading to them preferably on a flat disc, slab or flat vessel. The
sulphuric acid is then allowed to drop on the mangarate preparation (or manganate
of soda dry with itself) when by the action of one chemical on the other large
volumes of gases are generated which in transit to openings purify all foul air.
After these gases are evolved as above described water is mixed with the residue
mixture by which it is formed into a strong solution of permanganate acid. This
treats the sewage or other matter flowing through drains or culverts.
The mixing of these chemicals for producing gases and permanganic acid may be
done by hand from acid proof bottles or vessels but in certain circumstances I
employ an automatic distributor of the powdered chemicals in regulated quantities
on which the sulphuric acid drops. The motive power for working the distributor is
in such cases supplied by the water which mixes the chemicals.
Having now particularly described and ascertained the nature of this in-
vention and in what manner the same is to be performed I declare, that what I
claim is
The improved means of purifying the air of drains and sewers or for suppressing
noxious vapours generally, substantially as herein set forth.
Dated this 29th day or June 1990.
H. GARDNER,
Patent Agent, 166 Fleet Street, London,
Agent for the said R. H. Reeves.