An Improved Smoke Generator or Fumigating Apparatus for Smoke Testing Drains, Fumigating Greenhouses, Asphyxiating Vermin, or like purposes.
Year: 1891

page_text: Date of Application, 16th Apr., 1891
Complete Specification Left, 16th Jan., 1892-Accepted, 9th Apr., 1892
PROVISIONAL SPECIFICATION.
An Improved Smoke Generator or Fumigating Apparatus for Smoke
Testing Drains, Fumigating Greenhouses, Asphyxiating Vermin,
or like purposes.
I WILLIAM GALLON of 9 Albion Road Holloway Road 1-lington in the County
of London Civil Engineer do hereby declare the nature of this invention to be as
follows:-
A cylinder with inlet and outlet valves and a hand worked piston, forming an air
pump, combined with a combustion chamber, all enclosed in a sheet iron casing. A.
tube for conveying the smoke to any required point and a handle attached to the
casing for carrying the whole by. The smoke tube is attached to the top of the
cover over the combustion chamber.
The said cover is made in the form of a sleeve and when in place is secured by
hasps or clips to the casing. The sleeve may be surrounded with water to prevent
the escape of smoke. For greater convenience in carrying, the smoke tube may
be packed on the top of the apparatus, under the handle or it may be wound round
the casing and supported on clips provided for the purpose, the whole apparatus
is conveniently portable and may be provided with a gauge to record the air
pressure.
COMPLETE SPECIFICATION.
An Improved Smoke Generator or Fumigating Apparatus for Smoke
Testing Drains, Fumigating Greenhouses, Asphyxiating Vermin,
or like purposes.
I WILLIAM GALLON of 9 Albion Road Holloway Road Islington in the County
of London, Civil 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 :-
To facilitate description and render the same readily intelligible the sectional
drawing accompanying, and forming a part of this Specification is referred to by
means of the letters A. B. C. D.
The apparatus consists of a handworked air pump, A, comprising a sheet iron
ylinder, in a vertical position, with an air inlet valve at the bottom thereof, and a
mica flap valve at the side, together with a sheet iron cylindrical piston, provided
with a handle attached to the top, and properly packed to fit the cylinder, as
indicated by the portions hatched on the drawing.
On raising the piston the bottom valve is forced upward by atmospheric pressure
admitting air to the cylinder. The return of the piston closes the said bottom
valve and the pressure of the compressed air opens the mica flap valve at the side
It will thus
communicating with and admitting air to the combustion chamber B.
be apparent that the travel of the piston, alternately admits air to the cylinder and
forces it through the opening at the side covered by the micn flap valve.
"
The combustion chamber B is also constructed of sheet iron, in the form of a
cylinder and contains a movable grate or holder, similar in form, but necessarily of
less diameter, for holding the "cotton waste or other suitable material employed
to produce smoke. The said
grate or holder" is perforated with numerous
holes to permit the air from the air pump" to come into contact with the smoke
6.
"

page_text: "
producing material. The combustion chamber B is open at the bottom, but a ledge
is formed all round to carry the "grate or, "holder." An annular air space is
also provided round the said " grate" or "holder."
The combustion chamber B is surrounded by an annular space or reservoir filled
with water into which a cylindrical cover or sleeve dips forming a seal to prevent
the escape of smoke other than in the required direction. The top part of the
cover or "sleeve" to which the smoke tube, C, is attached is cone shaped.
When in place the said cover or sleeve is secured by a hasp or clip.
The "air pump" A, and the combustion chamber B with their accessories are
enclosed in a sheet iron casing which is provided with a carrying handle D.
The tube C may be packed on the top of the apparatus under the handle or it
may be wound round the casing and supported on clips provided and attached to
the said casing for the purpose.
The whole apparatus is conveniently portable and may or may not be provided
with a gauge to record the air pressure.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to he performed declare that what I
claim is
An improved portable smoke "generator" with or without a recording pressure
gauge substantially as described.
Dated this 15th day of January 1892.