AN IMPROVED APPARATUS FOR HEATING METALLURGICAL AND CERTAIN OTHER FURNACES BY MEANS OF COAL DUST AND OTHER PULVERISED FUELS
Year: 1881

page_text: LETTERS PATENT to George Edward Vaughan, of 67, Chancery Lane, in the
County of Middlesex, Patent Agent, for an Invention of "AN IMPROVED
APPARATUS FOR HEATING METALLURGICAL AND CERTAIN OTHER FURNACES
BY MEANS OF COAL DUST AND OTHER PULVERISED FUELS." A communica-
tion from abroad by George Montayn Thomson, of Paris, in the Republic of
T
PROVISIONAL SPECIFICATION left by the said George Edward Vaughan at
the Office of the Commissioners of Patents on the 24th February 1881.
GEORGE EDWARD VAUGHAN, of 67, Chancery Lane, in the County of Middlesex,
Patent Agent.
"AN IMPROVED APPARATUS FOR HEATING METALLURGICAL AND
CERTAIN OTHER FURNACES BY MEANS OF COAL DUST AND OTHER PULVERISED
FUELS." A communication from abroad by George Montayn Thomson, of Paris,
in the Republic of France.
'an
This Invention relates to an improved apparatus by means of which coal dust
and other pulverised fuels can be efficiently and economically utilised for the heating
of metallurgical and certain other furnaces.
The apparatus in question is composed of a hopper through which the pulverised
fuel falls upon a horizontal shaft provided with worms or screw blades working in
opposite directions from the centre, the said shaft being operated by any convenient
motor. By these worms the fuel is carried into funnels beneath each end of the
hopper, whence it falls into air pipes, in which after being thoroughly mixed with.
atmospheric air it is blown into a combustion chamber, where it is instantaneously
ignited and entirely consumed. The amount of air required to effect perfect
combustion is regulated by suitable registers, and the admission of the fuel is
controlled by a pulley set on the worm shaft, the uniformity of the feed being
secured by agitators set upon a longitudinal shaft, which passing through the
hopper from end to end is rotated by suitable gearing.
The form, dimensions, and general details of construction of the apparatus may
be varied according to its intended application.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said George Edward Vaughan in the Great Seal Patent Office on the
6th August 1881.
GEORGE EDWARD VAUGHAN, of 67, Chancery Lane, in the County of Middlesex,
Patent Agent.
"AN IMPROVED APPARATUS FOR HEATING METALLURGICAL AND
CERTAIN OTHER FURNACES BY MEANS OF COAL DUST AND OTHER PULVERISED
FUELS." A communication from abroad by George Montayn Thomson, of Paris,
in the Republic of France.
This Invention relates to an improved apparatus by means of which coal dust
and other pulverised fuels may be efficiently and economically utilised for the
heating of metallurgical and certain other furnaces.
The apparatus in question is composed of a hopper through which the pulverised
fuel falls upon a horizontal shaft provided with worms or screw blades working in
opposite directions from the centre, said shaft being operated by any convenient
motor. By these worms the fuel is carried into funnels beneath each end of the
hopper, whence it falls into air pipes, in which after being thoroughly mixed with
atmospheric air, it is blown into a combustion chamber, where it is instantaneously
ignited and entirely consumed. The amount of air required to effect perfect
combustion is regulated by suitable registers, and the admission of the fuel is
controlled by a pulley set on the worm shaft, the uniformity of the feed being
secured by agitators set upon a longitudinal shaft, which passing through the
hopper from end to end is rotated by suitable gearing.
The form, dimensions, and general details of construction of the apparatus may
be varied according to its intended application.
Figure 1 of the accompanying Drawings is an end view of the apparatus.
Figure 2 is a longitudinal section of the same.
The pulverised fuel placed in the hopper A is conveyed in opposite directions
from the centre by the screw shaft B to the openings formed at each end of the
hopper, whence passing through the funnels C, C, it falls into the air pipes D. At
the point F of these pipes it mingles with atmospheric air and is blown into the
chamber G, where its ignition and combustion is effected as seen in Figure 1. The
admission of the quantity of air required for perfect combustion is regulated by
the port H in the pipe D (Figure 1). The supply of fuel is regulated by the cone
pulley or conical shaft I, Figure 2, in combination with the port H and with the
funnels C, C. K is an agitator designed to stir up the powdered fuel and to secure
uniformity of feed to the worm or screw B.
Having now described and ascertained the nature of the said Invention, and the
manner in which the same is or may be carried into effect, I declare that what I
claim and desire to secure by Letters Patent is,―
An apparatus for burning coal dust and other pulverised fuels, composed of a
hopper A and of a horizontal shaft provided with worms or screw blades set in
opposite directions from the centre, whereby the fuel is conveyed into pipes in
which it is mixed with atmospheric air, and thence blown into a combustion
chamber, the whole substantially as and for the purposes hereinbefore set forth and
shewn in the Figures of the accompanying Drawings.
In witness whereof, I, the said George Edward Vaughan, have hereunto set
my hand and seal, this Fifth day of August, in the year of our Lord One
dad and nighty-one
GEO. E. VAUGHAN. (L.S.)