An Improved Furnace for Burning Ash-pit Refuse.
Year: 1890

page_text: Date of Application, 24th Dec., 1890
Complete Specification Left, 19th Mar., 1891-Accepted, 25th Apr.. 1891
PROVISIONAL SPECIFICATION.
An Improved Furnace for Burning Ash-pit Refuse.
I, JOHN HENRY CHESSHIRE, of Oakwood, West Bromwich, Staffordshire, Iron-
founder, do hereby declare the nature of this invention to be as follows:-
This invention consists in the herein described improved furnace for burning
ashes and other ash-pit refuse, for heating greenhouses or other buildings, places,
or vessels where a steady and continuous heat is required.
My said improved furnace is preferably built of thick brick walls lined with fire-
brick, and it consists of a chamber (preferably square in plan) having three
openings, one at the top for admission of the ashes or other fuel and closed by a
suitable removable cover or door, and one opening in each of two of its opposite
sides at or near the furnace bottom.
One of these side openings serves as an air inlet and is furnished with a suitable
door by which the opening can be regulated, and the opposite opening is the outlet
for the products of combustion, and this outlet leads to the boiler, or other vessel,
or to the flue or other place which is required to be heated, and then on to the
chimney.
When the furnace is alight at the bottom it can be piled up inside with the ashes
or other ashpit refuse so as to burn for many hours without additional fuel, the air
entering by the side door and cutting through the bottom of the burning mass and
passing out at the opposite side opening as above stated.
I prefer to make the walls of the furnace thick as above stated so as to assist in
equalizing the heat, as they partly absorb any excess of heat and give it off when
the furnace is not burning so fiercely.
Dated this 22nd day of December 1890.
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.
COMPLETE SPECIFICATION.
An Improved Furnace for Burning Ash-pit Refuse.
I, JOHN HENRY CHESSHIRE, of Oakwood, West Bromwich, Staffordshire, Iron-
founder, 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 consists in the herein described improved furnace for burning
riddled ashes and other ash-pit refuse, for heating greenhouses or other buildings,
places, or vessels where a steady and continuous heat is required.
I will describe my invention by referring to the accompanying drawing on
which
Fig. 1 represents in front elevation, Fig. 2 in plan, Fig. 3 in cross sectional
elevation, and Fig. 4 in sectional plan, a furnace constructed according to this
invention;
Fig. 5 is a longitudinal sectional elevation of the same shewing it applied for
heating a saddle boiler of a warming apparatus, and
Fig. 6 is a sectional plan of a similar furnace but of a larger size.
The same letters of reference indicate the same parts in all the figures of the
drawing.
The drawing is made to scale so as to give the exact proportions of the furnace

page_text: which are important, but these may be varied slightly without materially affecting
the result.
My said improved furnace is preferably built of thick brick walls lined with fire-
brick, and it consists of a chamber A. (preferably rectangular in plan as shewn)
having three openings, one marked B at the top for admission of the ashes or other
fuel and closed by a suitable removable cover or door C, another opening D in the
front side about one course above the furnace bottom and serving as an air inlet
and clinker hole and furnished with a suitable door by which the opening for
admission of air can be regulated, and another opening E at the opposite side
forming the outlet for the products of combustion. This outlet E leads to the
boiler F, which is set in the usual way and forins no part of this invention. Or
the outlet E may lead to any other vessel, or to the Hue or other place which is
required to be heated and then on to the chimney.
When the furnace is alight at the bottom it can be piled up inside with the ashes
or other ashpit refuse through the inlet B so as to burn for many hours without
additional fuel, the air entering by the side door D and cutting through the bottom
of the burning mass and passing out at the opposite side opening E as above stated.
In actual practice I find that a furnace such as shewn by Figs. 1, 2, 3, 4 and 5 will
burn for 24 hours without recharging.
I prefer to make the walls of the furnace thick as above stated so as to assist in
equalizing the heat, as they partly absorb any excess of heat and give it off when
the furnace is not burning so fiercely.
The furnace shewn by Figs. 1, 2, 3, 4 and 5 is eighteen inches square inside at
the bottom and I find that if a larger furnace is required it is advisable to increase
the width only (as shewn in Fig. 6) and not to increase the distance across the
furnace from the inlet D to the outlet E.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
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The improved furnace for burning riddled ashes and other ash-pit refuse con-
structed substantially as hereinbefore described and illustrated by the accompanying
drawing.