Improvements in the Manufacture of Wheat Flour.
Year: 1899

page_text: .
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Wheat Flour.
I, TOM PARKINSON, of Denewell Avenue, Low Fell, Gateshead-on-Tyne, in the
County of Durham, Mill Manager, do hereby declare the nature of this inven-
tion to be as follows:-
The object of this invention is to improve the flavour of flour made from wheat,
and the invention is carried into effect as follows.
In the manufacture of flour the aroma or perfume or air laden with the aroma or
perfume that is present in certain machines during the grinding and sifting of the
grain is drawn from as many of these machines as may be desired, and forced into or
drawn through a receptacle containing flour in bulk. This receptacle has an appliance
fitted in the interior which keeps the flour in a state of agitation, or the receptacle
may have notion imparted to it for agitating the flour, such flour being retained in
the receptacle long enough to allow of its becoming permeated with the aroma-laden
air from the various machines.
This invention also provides for arresting or collecting the bran, or any flour mill'
products other than flour, which possess the desired aroma, during the various stages
of manufacture (before going to the sack) and holding it or them in bulk long enough
in cylinders or suitable receptacles or machines to allow air to be drawn through
them for the purpose of extracting the aroma; this aroma laden air is also forced into
or drawn through the receptacle containing the four to be flavoured or perfumed.
Such bran, or other products may be agitated if desired during extraction of the
aroma.
The aroma-laden air from the various machines and also from the cylinders
containing the bran or any mill products other than flour is preferably purified by
passing it through suitable filtering material before forcing it into or drawing it
through the receptacle containing the flour.
A Roots blower or other suitable air moving appliance may be used for drawing
the aroma-laden air from the various machines and forcing it into or drawing it
through the receptacle containing the flour.
The cylinders or machines which are used for holding the brau or other mill
products during the process of extracting the aroma may if desired be heated.
Dated thir. Soventh day of July 1809.

page_text: in what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement, reference being had to the accompanying
drawings:-
The object of this invention is to improve the flavour of flour made from wheat,
and the invention is carried into effect as follows.
In the manufacture of flour the aroma or perfume or air laden with the arqma or
perfume that is present in certain machines during the grinding and sifting of the
grain is drawn from as many of these machines as may be desired, and forced into or
drawn through a receptacle containing flour in bulk. This receptacle has an
appliance fitted in the interior which keeps the flour in a state of agitation, or the
receptacle may have motion imparted to it for agitating the flour, such flour being
retained in the receptacle long enough to allow of its becoming permeated with the
aroma-laden air from the various machines.
This invention also provides for arresting or collecting the bran, or any flour mill
products other than flour, which possess the desired aroma, during the various stages
of manufacture (before going to the sack) and bolding it or them in bulk long enough
in cylinders or suitable receptacles or machines to allow air to be drawn through
them for the purpose of extracting the aroma; this aroma-laden air is also forced
into or drawn through the receptacle containing the flour to be flavoured or perfuined.
Such bran or other products may be agitated if desired during extraction of the
aroma.
The aroma-laden air from the various machines and also from the cylinders
containing the bran or any mill products other than flour is preferably purified by
passing it through suitable filtering material before forcing it into or drawing it
through the receptacle containing the flour.
A loots blower or other suitable air moving appliance may be used for drawing the
aroma-laden air from the various machines and forcing it into or drawing it through
the receptacle containing the flour.
The cylinders or machines which are used for. holding the bran or other mill
products during the process of extracting the aroma may if desired be heated.
DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a view representing appliances suitable for carrying my invention into
practice. a represents machines working in a mill such as rolls, rotary scalpers &c.
in which aroma or perfume is given off from the grain being treated. are pipes
through which the aroma, or air laden therewith, may be withdrawn froin the
machines a by any convenient air moving appliance say a Roots blower c and forced
into the lower part of a receptacle or cylinder d which contains flour up to about the
level of the feed spout e through which spout flour is fed into the receptacle either
continuously or intermittently, such flour being removed from the bottom of the
receptacle by a worth for other convenient device as desired. g is a rotatable shaft
carried in bearings h and provided with agitators which gently agitate the flour
thus facilitating. the passage of the aroma laden air through the mass to the
outlet j. glare stirrers to prevent the flour sticking at the bottom of the receptacle.
The said air in passing through the flour leaves in such flour a considerable portion
of the aroma thus greatly improving the flavour of the flour. The rate of travel of
the flour through the receptacle is so regulated that as much as possible of the
aroma is absorbed by such flour. & represents an air filtering or purifying appliance
of any convenient kind for separating impurities from the air before passing it
through the flour.
Instead of or in addition to drawing the aroma laden air from the machines above
referred to, I may collect bran or other flour mill products having the desired aroma,
at any stage of manufacture, in a receptacle or cylinder as shown in Fig. 2 where / is
a receptacle in which bran &c. is collected through a spout m either continuously or
intermittently. The rate of travel of the bran &c. down the cylinder is so regu-
lated that as much of the aroma as desired may be extracted from it, after which it

page_text: is removed by the worm n at the bottom. The level of the bran is kept up to about
the level of the spout m. o is a gauze covered inlet way through which air can
enter and be drawn by means of an exhauster c through the receptacle amongst the
bran and out at p through a purifier & carrying with it the aroma given off by the
bran. The aroma laden air from c is passed into a receptacle d amongst flour therein
as described under Fig. 1. The receptacle is preferably provided with agitators q
for agitating the bran to facilitate the passage of the air. The bran &c. while
passing through the receptacle may if desired be heated by means of steam pipes
surrounding the receptacle or by other suitable means. This heating in most cases
increases the amount, or expedites the giving off, of the aroma or perfume. The
aroma laden air from the bran &c. is passed through a suitable air filtering or
purifying appliance k for separating impurities from such air before passing it
through the flour.
Fig. 3 shows a modification of apparatus for extracting the aroma from bran &c.
This consists of a receptacle provided with shelves on to the top one of which the
bran &c. is fed through a spout m. Agilators q on a shaft q' are provided for moving
the bran in bulk from one shelf to another alternately inwards and outwards until it
is discharged at the bottom. Air enters at the bottom and passing through the
receptacle and amongst and over the bran takes up the aroma given off and is then
drawn away as described under Fig. 2 and delivered to a receptacle containing flour.
The shelves may be heated by steam pipes r or otherwise as and if desired.
I do not confine myself to the particular apparatus above described for carrying
out my invention as it will be obvious many arrangements and modifications of
appliances and machines may be employed to effect the same purpose, for instance
the receptacles & and instead of having agitators might be inclined and arranged to
revolve so as to agitate the contents; or the flour or bran might be caused to travel
horizontally or nearly. so by means of a worm or the like along a trough or trunk
through which air could be passed; or other convenient apparatus may be used
according to circumstances, but
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 :-
First. The method of flavouring flour consisting of withdrawing the aroma or
aroma laden air from flour milling machinery or from flour mill products and passing
such aroma or aroma laden air through the said flour substantially as set forth.
Second. The combination with flour milling machines or with a receptacle for
flour mill products of a receptacle for flour, and means for passing the aroma from
the said machines or products to the flour in or passing through the said receptacle
substantially as and for the purpose set forth.
Third. In combination with appliances for transferring the aroma from bran or
other flour mill products to flour, means for heating such bran or products substan-
tially as and for the purpose set forth.
Fourth. The combination with flour milling machines or with a receptacle for
flour mill products, of a receptacle for flour, ineans for agitating the said products or
flour or both, and means for passing the aroma from the said machines or products to
the flour in or passing through the said receptacle substantially as and for the purpose
set forth.
Dated this Inira day of April 1900.
W. B. JOHNSON,
4, Clayton Square, Liverpool, Agent.