IMPROVEMENTS IN THE APPARATUS FOR AND IN THE METHOD OF EPPECTING THE COMBUSTION OF FUEL
Year: 1866

page_text: PROVISIONAL SPECIFICATION left by Astley Paston Price at the Office of
the Commissioners of Patents, with his Petition, on the 13th June 1866.
-A communication from abroad by Jakob Bührer and Carl Hamel,
both of Munich, in the Kingdom of Bavaria.
I, ASTLEY PASTON PRICE, of 47, Lincoln's Inn Fields, in the County of
Middlesex, Consulting Chemist, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN THE APPARATUS FOR AND IN THE METHOD OF
EPPECTING THE COMBUSTION OF FUEL," a communication to me from abroad by
Jakob Bührer and Carl Hamel, both of Munich, in the Kingdom of Bavaria,
to be as follows:-
This Invention relates to furnaces constructed with special combustion
chambers or fire-places, wherein finely divided or powdered fuel is intended
to be burnt in a manner similar to that described in the Provisional Specifi-
cations respectively filed by Francis Wise, on the 4th of April 1866, No. 956,
and by me on the 12th of May 1866, No. 1365, and has for its object the
ensuring a more perfect combustion of the fuel employed.
The essential feature of this Invention consists in the application and use to
and in the combustion chambers or fire-places of furnaces generally of suitable
appliances and arrangements for checking, arresting, and controlling the descent
of the powdered or finely divided fuel in the combustion chamber or fire-
place in lieu of permitting it to fall unimpeded from the top to the bottom
thereof.
In practically carrying out this Invention I propose to introduce into the
combustion chamber or fire-place a number of stops or obstructions, of any

page_text: desired form, composed of brick or fire-clay or of metal, and made either solid,
or hollow, or tubular, and which may be so constructed as to be removable
or capable of being made to revolve. The finely divided fuel in its descent
falls on to these obstructions and descends from one to another until it reaches
the bottom of the combustion chamber or fire-place, the time occupied in its
descent being such as to ensure its perfect or complete combustion before it
reaches the inferior or lower portion of the combustion chamber or fire-place.
These stops or obstructions are placed at convenient distances apart both
laterally and vertically so as to afford ample space for the passage and
admixture of air to effect combustion, and for the escape of the products
thereof, and they may be made to occupy either the entire or only a portion
of the height or space of the interior of the combustion chamber or fire-place
according to the nature of the fuel employed and the heating effects it is
desired to produce. The air which may be heated or otherwise may be
allowed to enter the combustion chamber or fire-place either at the bottom or
sides, and is by preference so introduced as to meet and become mixed with
the descending fuel. By making these stops or obstructions tubular facility
is afforded for the passage of air through them, which will not only become
heated thereby and be serviceable for any purpose where air at an elevated
temperature is required; but will also in a great measure prevent or check
the burning of the material of which the stops or obstructions are composed.
When made of tubular metal the stops or obstructions may be used for
heating water or generating steam by allowing water to circulate through
them, which arrangement is specially applicable to steam boiler furnaces
which may be so constructed that the tubes shall open at each end either
directly or otherwise into the water space of the boiler.
The fuel is to be supplied either continuously or intermittantly to the com
bustion chamber by any convenient or well known feeding apparatus, such
for example, as those referred to in my Provisional Specification herein-before
mentioned or by my other arrangement, and may consist of any suitable solic
combustible material in a naturally divided state, or capable of being readil
reduced to a powdered or finely divided state, such, for example, as coal, coke
shale, peat, charcoal, sawdust, and dried tau or bark.