AN IMPROVED FUMIGATOR
Year: 1885

page_text: I, FREDERICK ROSHER, of Old Jamaica Wharf, Upper Ground St, Blackfriars,
in the County of Surrey, Merchant, do hereby declare the nature of my invention
for "AN IMPROVED FUMIGATOR," to be as follows:
The object of my invention is the production of an improved fumigator.
The material I employ in the manufacture of my improved fumigator is, by
preference, ordinary clay, although I do not confine myself to this substance as
any suitable material of a like nature may be employed.
The body of my fumigator is made in two parts, the upper fitting within the top
of the lower part in such a way that the addition of a little dry sand makes the
fit practically air-tight.
The
The fumigating material-such as tobacco paper torn up-is placed within the
upper part, the bottom of which is grated by perforation or otherwise.
removeable top, or stopper, of the upper part acts as a regulator of the quantity
of smoke produced. Combustion of the fumigant is effected by introducing a piece
of lighted paper, or the like, into the bottom part, a small door fitted to which
regulates the draught,
The joint between the two parts is then sanded, and the draught and delivery
of fume regulated by the door and stopper, past which latter the fume escapes.
Dated this on 1

page_text: I, FREDERICK ROSHER, of Old Jamaica Wharf, Upper Ground Street, Blackfriars,
in the County of Surrey, Merchant, do hereby declare the nature of my invention
for "AN IMPROVED FUMIGATOR," 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 the production of an improved fumigator.
The material I employ is, by preference, ordinary clay, but I wish it to be
distinctly understood that I do not confine myself to this substance, inasmuch as
the scope of my invention allows of the manufacture of my improved fumigator in
any other suitable material of a like nature, or such a material as cast iron may
be advantageously used for this purpose.
The body of my fumigator is inade in two principal parts, the upper one fitting
within the top of the lower part, leaving an annular space which is filled up with
dry sand, or similar material producing a practically air-tight joint.
The upper part is made with a perforated bottom, and is intended to receive the
fumigating material, preferably tobacco paper torn up into small pieces.
This is ignited by introducing lighted combustible into the lower part, and the
development of fume is regulated by the adjustment of the small door of the bottom
part, and of the stopper with which the top part of the fumigator is fitted, and
past which the fume escapes.
In order that my invention, and the means by which the same is carried into
practical effect, may be thoroughly understood, I will proceed to describe the same,
referring in so doing to the accompanying drawings which are to be taken as part
of this specification and read therewith. Like parts are throughout marked with
the same reference letter.
Fig. 1 is an elevation, and Fig. 2 a sectional elevation, of my improved
fumigator.
Fig. 3 is an elevation of the stopper.
Fig. 4 is a plan, taken at the line a-b on Fig. 2.
Fig. 5 is a sectional plan of the stopper taken at the line c-d on Fig. 3.
The fumigator is put into operation in the following manner.
A suitable quantity of tobacco paper, or other suitable fumigant, is torn up
sufficiently small and dropped into the upper half A. This is then placed upon
the ledge, b, formed inside the top of the lower half, B. Dry sand, or its equivalent,
is then dropped into the annular space left, producing a joint, b', which is
practically air-tight..
The fumigant is then ignited by introducing some lighted combustible, a piece
of lighted paper answers very well, into the lower part, by the small removable
door, 62. The bottom, a, of the upper part is grated by having slots, a', formed in
it, in preference to being perforated with holes.
The rate at which the fumigant is consumed depends, of course, upon the
quantity of air allowed access to it. This is regulated, in part, by means of the
small door, 62, conjointly with the stopper a². This is hollow and has holes, a³,
formed in its side. Corresponding holes, a, are formed round the neck, a³, of the
upper part of the fumigator. The adjustment of the holes in the stopper to

page_text: coincide more or less with those in the neck, a³, regulates the through current,
and the delivery of fume. A small ledge, 6³, and a counterpoise, 64, are formed on
the door, to keep it in its place.
A small hole, as, is made through the stopper, which allows of the maintenance
of combustion during a time when it might be desirable to stop the delivery of
fume.
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
The herein before combination of the several parts as described having their
respective functions as set forth, the whole forming the improved fumigator,
substantially as described with reference to the accompanying drawings.
Dated to 20 ay 01
PHILLIPS & LEIGH,
Patent Agents,.
22, Southampton Buildings, Chancery Lane, W.C.,
Agents for the Applicant.