Portable Sewer Gas Extractor and Destroyer in Conjunction with Sewer Disinfector.
Year: 1896

page_text: Date of Application, 25th Aug., 1896
Complete Specification Left, 31st Oct., 1896-Accepted, 23rd Jan., 1897
PROVISIONAL SPECIFICATION.
Portable Sewer Gas Extractor and Destroyer in Conjunction with
Sewer Disinfector.
WILLIAM EGGINTON 176 Waterloo Road Smethwick Birmingham Refreshment
Caterer do hereby declare the nature of this invention to be as follows:-
The apparatus necessary in carrying out this improved system of sewerage gas
extraction and fewer disinfection is made up of
I. A portable engine for driving the fan.
II. A sewerage gas extractor and destructor.
III. A disinfector.
IV. Air proof mats.
V. Air proof drop plates.
The sewerage gas extractor & destructor is a metal cylinder which is placed
directly over the man hole and is so connected to it that the gas drawn from the
sewer cannot escape into the free air but is compelled to traverse right through
the extractor. In the extractor is placed a fan which is driven by the engine (any
ordinary portable engine). Directly above the fan is a perforated metal frame
which acts as a protection to the fan from the cinders which may fall from the fire
bars, which are placed near the top of the metal cylinder.
The smoke from the fire at the top of the extractor is carried away by stove
piping connected to same.
The disinfector is also a metal cylinder but differently constructed internally.
The bottom of disinfector is composed of fire bars, and a perforated shelf is
placed a short distance above them upon which is put the disinfectants. The top
of the disinfector is so covered that the air or the disinfectaut gas cannot escapo.
A little air tight door is made at the top of the disinfector whereby the dis-
infectants can he supplied to the disinfector. A pipe of suitable dimensions runs
up the centre of the disinfector & open at both ends-the bottom end being
connected to the shaft of end manhole under operation-and in such a manner that
the disinfectant gas cannot escape into the free air.
The application of the apparatus to the section of, the road when complaints of
defective drainage have been found is as follows:
The sewerage gas extractor is placed into position directly over the first
man hole and connected to shaft of same in such a manner that the sewer gas
cannot escape to the air above the ground.
The drop plates are fixed at all points in the section of sewer under operation as
to shut off all gas communication to other parts of sewer.
The air proof mats are placed over the covers of the man holes intervening
between the first and last man holes of the section and of air shafts coming between
Bame.
The disinfector is then placed directly over the shaft of the last man hole in the
manner above described and when this is done the whole of the sewer gas is under
the direct control of the whole apparatus while at the same time it does not in the
least interfere with the liquid sewerage passing along the main sewer. This also
could be easily stopped during cleansing operations if necessary.
The engine being set in motion, the fan commences to revolve which operation

page_text: draws in due course all the sowor gas from the sewer. This sewer gas passes up
the extractor between the fire bars & through the fire which operation purifies and
destroys all the deadly elements contained in tho sewer gas.
The sewer being rid of all the poisonous gases, it is next operated upon by the
disinfector. The disinfectant is put into the disinfector, and the fire underneath
converts it into a disinfectant gas, which is made to permeate the whole of the
sewer by the assistance of the fan of the extractor which draws it from the
disinfector.
In this manner any portion of a sewer can be thoroughly examined thoroughly
cleansed & thoroughly disinfected in a very short space of time & without impeding
the general trafic or in any way cause the digging up of roads or displacing any
constructional arrangement.
Dated this 24th day of August 1896.
WILLIAM EGGINTON.
Portable Sewer Gas Extractor and Destroyer in Conjunction with
Sewer Disinfector.
WILLIAM EGGINTON 176 Waterloo Road Sinethwick Birmingham Refreshment
Caterer 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 :-
Figure 1 represents a section of the sewer gas extractor and destructor.
A represents the fan which is driven by a portable engine by band attached from
engine to wheel B. C is a suitably shaped perforated cover over fan to prevent
ashes from falling on to fan from the fire bars D. Door E is used for getting out
all ashes that fall on to shelf F. Door G is for feeding the fire. The extractor is
so fixed over manhole that no sewer gas can escape into the free air-all sewer gas
must go through the fire and passes up funnel H purified.
Figure 2 represents a section of the disinfector. The fire bats K are fixed at
the bottom and directly above them is hung a metal box L suitable in size and
shape in which is placed the disinfectant. An open pipe M runs up the centre of
disinfector. Doors N are for feeding the fire. The disinfector is likewise fixed
to manhole so that no sewer gas can escape.
Figure 3 represents a section of the sewer under operation. The extractor is
placed at the top manhole & the disinfector at the bottom one.
Drop plates Rare used down sewer at all necessary junctions to shut off all
sewer gas outside the section of sewer under operation, and air proof mats Pare
likewise put over all manholes and air shafts intervening between the top & bottom
manholes so as to prevent any sewer gas escaping.
The mode of working the whole of the apparatus is as follows:-
The apparatus-which is portable is taken to where the examination of sewer
takes place.
The gas extractor is placed directly over the top manhole & connected to shaft
of same so that no sewer gas can possibly escape.
The drop plates are fixed at all points in the section of the sewer so as to shut
off all gas communication to other parts of the sewer.
The air proof mats are placed over the covers of the manholes & air shafts
between top & bottom manholes to prevent escape of sewer gas.
The disinfector is then placed directly over the shaft of the bottom mnubole
similarly to the extractor and when this is done the whole of the sewer gas is

page_text: under the direct control of the apparatus, while at the same time it does not in the
least interfere with the liquid sewerage passing along tho main sewer, though this
also could be stopped for a short period if it were found necessary so to do.
The engine being set in motion, the fan commences to revolve-which operation
in due time draws all the sewer gas from the sewer.
This gas passes up the extractor & through the fire-which last operation
purifies and destroys all the deadly ingredients contained in the gas.
The sewer being rid of all the poisonous gases it is next operated upon by the
disinfector.
Disinfectants are put into the box for receiving same, and the heat of the fire
underneath the box converts it into a disinfectant gas, which by the operation of
the fan is made to permeate the whole of the sewer.
In this manner any portion of a sewer can be thoroughly cleansed, thoroughly
disinfected and thoroughly examined in a very short space of time-without
impeding the general traffic, or in any way cause the digging up of the roads, or
displacing any structural arrangement.
Having now particularly described and ascertained the nature of my mid
invention and in what manner the same is to be performed I declare that what
I claim is
1. The sewer gas extractor and destructor as described above.
11. The sewer disinfector as desoribed above.
111. The covering of the manholes & air shafts with air proof mats.
IV. Air proof drop plates to shut off all gas from entoring into that part of the
section under operation.-These four items being indispensable to the making of
one complete apparatus for the extraction and destruction of sewer gas, and the
thorough cleansing of sewer.
Dated this 20th
2000