IMPROVEMENTS IN APPARATUS FOR GENERATING AND EJECTING FUMES SMOKE OR VAPOURS FOR DISINFECTING, DEODORIZING OR FUMIGATING PURPOSES OR FOR THE TESTING OF PIPES OR PASSAGES BY WHAT IS KNOWN AS THE SMOKE TEST OR FOR ANALOGOUS PURPOSES
Year: 1884

page_text: I, JOHN WATTS of Broad Weir Engine Works in the City and County of Bristol
Engineer do hereby declare the nature of said Invention for "IMPROVEMENTS
IN APPARATUS FOR GENERATING AND EJECTING FUMES SMOKE OR VAPOURS FOR
DISINFECTING, DEODORIZING OR FUMIGATING PURPOSES OR FOR THE TESTING OF
PIPES OR PASSAGES BY WHAT IS KNOWN AS THE SMOKE TEST OR FOR ANALOGOUS
PURPOSES to be as follows:-
This Invention relates to Apparatus for generating and ejecting fumes smoke or
vapours for disinfecting deodorizing or fumigating purposes or for testing pipes or
passages by what is known as the smoke test or for analogous purposes.
According to my Invention I use a chamber for the combustion or generation of
any suitable material for producing the fumes smoke gases or vapours the said
chamber where fire is used having an adjustable inlet or inlets for air to support
combustion.
A blower or exhauster (preferably the former) is employed by which a current
of air is created which is not passed through the combustion or generating chamber
but is caused to pass independently to beyond the same where the said current
meets the smoke fumes or the like and conveys them along suitable tubing pipes
or passages into the place where they are to be used for disinfecting or testing or
other purpose-I may effect this by enclosing the combustion or generating
chamber in an airtight external chamber forming a space round the internal
chamber through which air is forced or drawn by the fan or blower the said air
after it has passed through the said space meeting with the smoke fumes or the
like and taking them with it through a common outlet in the external chamber
and through the tubing or the like to the place desired. The said outlet may
where fire is used be provided with a dip or deflector to prevent the possibility of
any sparks or flame passing into the outlet. Provision is made for feeding the
internal chamber which may be effected through an airtight door in the lid or
cover of the external chamber.
100
J. HENRY JOHNSON,
47, Lincoln's Inn Fields,
Agent for the said John Watts.

page_text: I JOHN WATTS of Broad Weir Engine Works in the City and County of Bristol
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:-
This Invention relates to apparatus for generating and ejecting fumes smoke or
vapours for disinfecting deodorising or fumigating purposes or for testing pipes or
passages by what is known as the smoke test or for analogous purposes.
According to my Invention I use a chamber for the reception of any suitable
material from which is to be produced or generated the fumes smoke gases or
vapours the said chamber where fire is used having an adjustable inlet or inlets
for the admission at the required times of air to support combustion-A blower or
exhauster (preferably the former) is employed by which a current of air is created
which is drawn or forced through a passage or duct or passages or ducts separate
from the combustion or generating chamber but so that the said current of air
meets the smoke fumes or the like as or after they leave the combustion or
generating chamber and conveys them along suitable tubing pipes or passages into
the place where they are to be used for disinfecting or testing or other purpose.
I may effect this by enclosing the combustion or generating chamber in an air
tight external chamber or casing forming a space round the internal chamber
through which space air is forced or drawn by the fan or blower the said air after
it has passed through the said space meeting with the smoke fumes or the like and
taking them with it through a common outlet in the external chamber and through
the tubing or the like to the place desired. The said outlet may (where fire is
used) be provided with a dip or deflector to prevent the possibility of any sparks
or flame passing into the outlet. Provision is made for feeding the internal
chamber with fume generating materials which feeding may be effected through
an air tight door in the lid or cover of the external chamber.
And in order that my said Invention may be fully understood I shall now
proceed more particularly to describe means whereby the same may be carried
into practical effect and for that purpose shall refer to the several figures on the
annexed sheets of drawings the same letters of reference indicating corresponding
parts in all the figures.
Figures 12 and 3 of the drawings represent respectively a longitudinal section,
a transverse section, and a sectional plan of an apparatus constructed according to
my Invention and the remaining Figures illustrate modifications as hereinafter
explained.

page_text: The material from which the fumes gases or vapours are to be produced or
generated is placed in the chamber A which chamber (when fire is employed for
producing the said fumes vapours or gases) is provided with a perforated flat or
other shaped bottom a, (shewn in the drawing as projecting into the interior of the
chamber A) for the admission of air when necessary into and amongst the material
to support combustion thereof, the admission of which air may be regulated as
required by means of an adjustable valve b fitted on or in the pipe or passage c
leading to the perforated bottom or chamber a. The chamber A is surrounded by
an outer casing or jacket B so as to leave a space C between the chamber A and
the casing B the said space communicating at the lower part thereof with a fan or
blower D and being closed at the upper end by a close fitting cover E. This cover
is provided with an opening F through which the material can be supplied to tho
chamber A and also with a nozzle or discharge pipe G through which the fumes
gases or vapours arising from the material in the chamber A are forced by the fan
blower D and conducted to the place where they are to be used.
The material having been ignited in the chamber A and the valve b adjusted so
as to admit the required amount of air to support combustion the fan or blower D
is rotated and a strong current of air is produced and forced through the space C
into the nozzle G drawing with it the fumes, gases or vapours generated in the
chamber A which if necessary may thence be conducted to the place required by a
flexible or other pipe or pipes attached to the outer end of the said nozzle.
order to prevent the liability of sparks from the material being carried out with
the fumes gases or vapours, the inner end of the nozzle may dip into a well H into
which will fall any sparks rising with the fumes gases or vapours.
In
If the fumes gases or vapours be produced by means of chemicals or otherwise
without the employment of fire the spark arrester H and the perforated bottom of
the chamber for the fume generating material may be dispensed with.
The apparatus may for convenience of transport be mounted upon a wheeled
carriage I as shewn in Figures 1, 2 and 3 Instead of arranging the fan blower
beneath the casing B it may be arranged on one side thereof as shewn in Figures 4
and 5 or in any other convenient or suitable position In these figures a
modification is shewn wherein the air to support combustion is supplied by the
fan instead of being drawn direct from the outer air, the inlet being regulated by a
valve as in the former case.
Instead of blowing the current through the apparatus the fan D may be made
to create a current there through by suction as illustrated in Figure 6, which
represents a vertical section of so much of an apparatus as is necessary to illustrate
this modification. The chamber for the fume generating material is marked A,
and it is shewn as having a perforated bottom for the supply of air to support
combustion. The said chamber A is supported in an outer casing B with a space C
between itself and the chamber A. Air enters at 6 and is drawn down the
space C and in any required quantity (determined by the perforations) into and
through the chamber A and thence the air currents together with the fumes gases
or vapours pass through the fan D (which is rotated to produce the currents
required) and issue into the outlet at G to be conducted to any required place
for use.
I wish it to be understood that I do not limit myself to the precise details
herein before described and illustrated in the accompanying drawings as they may
be considerably varied without departing from the nature of my Invention.
Having now particularly described and ascertained the nature of my Invention
and in what manner the same is to be performed I declare that what I claim is
First. In apparatus for generating and ejecting or withdrawing fumes
gases or
vapours the use of separate passages pipes or ducts respectively for the air when
necessary to support combustion and for the main supply of air by which the
fumes smoke or vapours are to be conveyed to the place at which they are to be
used substantially as bereinbefore described.

page_text: Second. In apparatus for generating and ejecting fumes smoke or vapours the
employment of a casing surrounding the chamber or chambers in which the fumes
gases or vapours are generated and from which they are driven off or withdrawn
and means for creating a current of air through the said casing to meet the fumes
smoke or vapour and conduct them away to the place where they are to be used
substantially as herein before described.
Third. In combination with apparatus arranged as claimed by the preceding
claiming clauses a dip or deflector to arrest sparks and flame substantially as
⚫herein before described.
Fourth. The general arrangements and combinations of parts constituting the
several apparatus substantially as and for the purpose herein before described and
illustrated in the several Figures of the accompanying Drawings.
J. HENRY JOHNSON,
Agent.