IMPROVEMENTS IN FLOUR MILLS OR MACHINERY OR APPARATUS FOR GRINDING CORN
Year: 1883

page_text: LETTERS PATENT to Katherine Jane Dance of 10 Saint John's Road Clifton
in the City and County of Bristol-for an Invention of "IMPROVEMENTS
PROVISIONAL SPECIFICATION left by the said Katherine Jane Dance at
the Office of the Commissioners of Patents on the 7th June 1883.
KATHERINE JANE DANCE of 10 Saint Johns Road, Clifton, in the City and
County of Bristol, "IMPROVEMENTS IN FLOUR MILLS OR MACHINERY OR
APPARATUS FOR GRINDING CORN
"
"
My Invention consists in the addition to flour mills or apparatus or machinery
for grinding corn of blowing or exhausting apparatus with the view to avoid the
danger of explosion arising from the collection of dust in the "stive room by
blowing or exhausting the said dust into the furnaces by means of the following
arrangement.
Over the grindstones or over or at other place where the aforesaid dust is given
off I construct or erect a cover funnel or opening leading into a pipe or passage or
pipes or passages which passes or pass to the furnace or furnaces and there
terminate in an opening or openings which communicate with the fire in the said
furnace or furnaces. A fan or blower is employed in or at the said funnel or
funnels or passage or passages to draw or blow the dust into the furnace or furnaces
through the aforesaid funnels and passages which may be provided with valves or
dampers to regulate the draught

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent and
of an Order of the Lord Chancellor filed by the said Katherine Jane Dance
in the Great Seal Patent Office on the 24th December 1883.
KATHERINE JANE DANCE of 10 Saint Johns Road Clifton in the City and
IMPROVEMENTS IN FLOUR MILLS OR MACHINERY
County of Bristol
APPARATUS FOR GRINDING CORN"
"
OR
My Invention consists in the addition to flour mills or apparatus or machinery
for grinding corn of blowing or exhausting apparatus with the view to avoid the
room by
danger of explosion arising from the collection of dust in the "stive
blowing or exhausting the said dust into the furnace by means of the following
arrangement.
Over each machine or room or over or at other place where the aforesaid dust is
given off I construct or erect a cover funnel or opening leading into a pipe or
passage or pipes or passages which passes or pass to the furnace or furnaces and
there terminate in an opening or openings which communicate with the fire in the
said furnace or furnaces.
A fan or blower is employed in or at the said funnel or funnels or passage or
passages to draw or blow the dust into the furnace or furnaces through the afore-
said funnels and passages which may be provided with valves or dampers to
regulate the draught.
And in order that my said Invention may be fully understood I shall now
proceed more particularly to describe the same and for that purpose shall refer
to the accompanying drawings which represent a vertical section of a flour mill
fitted with my improvements.
I will describe my Invention as applied to a mill arranged as described in the
Specification of my Patent N° 5429 dated the fourteenth November One thousand
eight hundred and eighty two the accompanying drawing representing such an
arrangement shewing means for carrying away the dust from all the rooms and
also from the casings of the ending polishing and grinding stones but it is to be
understood that the Invention may be applied to only such rooms or casings as it
may be found necessary to apply it to and also that the Invention may be applied
in a similar manner to ordinary mills.
Z represents a main pipe leading to the eye of a fan Y branch pipes 1, 3, 5
and 8 lead respectively from the chainbers DGM and X the said pipes terminating
in a funnel-like collector (la 3a 5a 8a) The pipe W leads from the fan Y into a
furnace or consumer as at V at a point best fitted for the consumption of the dust.
Pipes 2, 46 and 7. are also shewn as being in communication with the pipe Z
the said pipes leading respectively from the casings of the ending stones E the
The pipes are all provided
polishing stones F and the grinding stones J and L.
with valves q by which the force of the air current leading from the several rooms
and casings can be regulated in accordance with the nature or specific gravity of the
dust or impurities to be carried off. When the fan Y is operated a current of air
is induced which draws the dust or impurities from the rooms or casings and dis-
charges it into the furnaces. 1 do not necessarily limit myself to a fan as shewn
at Y as any suitable or equivalent means for inducing an air current suited for the
purpose described may be employed. By means of the valves q the current of ai
through any or all of the pipes may be moderated or accelerated as may be
necessary to give the requisite strength of current to draw off the dust or impuri
ties without carrying away therewith any of the grain or of the flour produced
therefrom.

page_text: It will be understood that as before stated I do not necessarily limit myself to
the application of my Invention to a mill arranged as shewn in the Drawings nor
to the collection of the dust from all the rooms and casings as it may be collected
if desired from one or more of the said rooms or casings as may be desirable in
practice. When my present Invention is employed in combination with the mill
arranged as and for the purposes described in the Specification of my said prior
Patent 5429 of One thousand eight hundred and eighty two the currents created
will not only tend to obviate the danger of explosion but will also have a very
beneficial cleansing and purifying effect upon the grain being treated. Of course
where necessary there may be provided air inlets to the chambers to replace the
air withdrawn by the fan and if desired these inlets may be provided with a
material or filtering medium to intercept dust or impurities.
Having now described and particularly ascertained the nature of my said
Invention and the manner in which the same is or may be used or carried into
effect I would observe in conclusion that what I consider to be novel and original
and therefore claim as the Invention secured to me by the hereinbefore in part
recited Letters Patent is:-
:-
In flour mills or machinery or apparatus for grinding corn the combination of a
pipe or passage or pipes or passages so arranged in connection with a furnace or
consumer that on a current or currents of air being created or induced through the
said pipe or passage or pipes or passages dust or impurities is or are drawn off from
the rooms or casings in which the grain or material are treated or is or are separated
from the grain or material under treatment and consumed substantially as herein-
before described.
In witness whereof I the said Katherine Jane Dance have to this my Specifica-
tion set my hand and seal this twentieth day of December One thousand eight
hundred and eighty three
KATHARINE JANE DANCE (L.S.)