An Improvement in Portable Slow-combustion Stoves.
Year: 1890

page_text: Date of Application, 1st Feb., 1890
Complete Specification Left, 28th Nov., 1890-Accepted, 10th Jan., 1891
PROVISIONAL SPECIFICATION.
An Improvement in Portable Slow-combustion Stoves.
I, ALFRED SAVILL TOMKINS, of Holmwood, Caterham, in the County of Surrey,
Captain in the Victoria Rifles, do hereby declare the nature of this invention to
be as follows:-
My invention relates to the construction of portable slow combustion stoves, more
particularly applicable for heating in tents, or huts, for the use of military men or
travellers.
The stove consists of an upright casing of iron plate with a flue pipe from its top
cover and a feeding fire door near the upper part of its front.
A little above the bottom of the casing there is a plate with a central hole through
it of comparatively small area, or there may be several smaller holes through it, and
in the front under this plate there is a door giving access to the space which forms
an ash pit under the plate.
The fuel rests on the plate, and the air necessary for slow combustion passes up
through the hole or holes of the plate, no air being otherwise admitted except such
small quantity as may leak in through the joints. The casing of the stove may be
square, rectangular, or circular in plan, and instead of the sides being vertical, they
may slope inwards towards the top so as to give the stove a pyramidal form. When
the stove is square or rectangular in plan, its sides may be hinged together or held
together by tongues of one plate projecting through slits of another, so that the
sides can be folded or packed together in small compass along with the separable
bottom plates and cover for giving convenient portability.
T
1000
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
An Improvement in Portable Slow-combustion Stoves.
I, ALFRED SAVILL TOMKINS, of Holmwood, Caterham, in the County of Surrey,
Captain in the Victoria Rifles, 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 :-
My invention relates to the construction of portable slow combustion stoves, more
particularly applicable for heating in tents or huts, for the use of military men or
travellers.
The stove consists of an upright casing of iron plate with a flue pipe from its top
cover and a feeding fire door near the upper part of its front.
A little above the bottom of the casing there is a plate with a central hole through
it of comparatively small area, or there may be several smaller holes through it, and
in the front under this plate there is a door giving access to the space which forms
an ash pit under the plate.
The fuel rests on the plate, and the air necessary for slow combustion passes up
through the hole or holes of the plate, no air being otherwise admitted except such
small quantity as may leak in through the joints. The casing of the stove may be
square, rectangular, or circular in plan, and instead of the sides being vertical, they
may slope inwards towards the top so as to give the stove a pyramidal form. When
the stove is square or rectangular in plan, its sides may be hinged together or held
together by tongues of one plate projecting through slits of another, so that the sides

page_text: can be folded or packed together in small compass along with the separable bottom
plates and cover for giving convenient portability.
The accompanying drawings represent a simple stove according to my invention
made in pyramidal form.
Fig. 1 is a front view,
Fig. 2 is a vertical section on Y Y of Fig. 1,
Fig. 3 is a plan and
Fig. 4 is a sectional plan on Z Z of Fig. 2.
Near the bottom of the stove is a plate P, preferably somewhat dished as shewn
with a small hole H through it. The fuel F, which is fed into the stove through the
door D, being supplied with only a small quantity of air entering by a lateral
opening (which might have a door) and passing up through the hole H, burns
very slowly, the products of combustion escaping by the open apex A, to which a
flue pipe might be added.
Having now particularly described and ascertained the nature of this inven
tion and in what manner the same is to be performed, I declare that what I
claim is :-
A stove having walls enclosing the body of fuel, and a bottom plate supporting the
fuel and having through it small passage for supply of air to support only slow
combustion of the fuel, substantially as described.
Dated this 28th day of November 1890.
ABEL & IMRAY,
Agents for the Applicant.