IMPROVEMENTS IN MILLS FOR GRINDING AND DRESSING CORN, PARTS OF WHICH INVENTION ARE ALSO APPLICABLE FOR OTHER GRINDING PURPOSES."
Year: 1881

page_text: LETTERS PATENT to Edwin Phillips, of Fleet Street, in the City of London,
Mechanical Engineer, for an Invention of "IMPROVEMENTS IN MILLS FOR
GRINDING AND DRESSING CORN, PARTS OF WHICH INVENTION ARE ALSO
APPLICABLE FOR OTHER GRINDING PURPOSES."
PROVISIONAL SPECIFICATION left by the said Edwin Phillips at the Office
of the Commissioners of Patónts on the 19th November 1881.
EDWIN PHILLIPS, of Fleet Street, in the City of London, Mechanical Engineer.
"IMPROVEMENTS IN MILLS FOR GRINDING AND DRESSING CORN, PARTS OF WHICH
INVENTION ARE ALSO APPLICABLE FOR OTHER GRINDING PURPOSES."
The primary object of this Invention is to obtain a greater amount of grinding
surface within a given diameter than hitherto, and to effect this object the grinding
surfaces are mounted preferably around an horizontal axis, one grinding surfaco
being fixed thereto. The other grinding surface is secured to the frame or casing,
which is stationary. The revolving grinder mounted on the axis has a deep
annular groove or grooves formed therein of a V shapo, and the shape of the fixed
grinding surfaces corresponds therewith. The said grinding surfaces are brought
up together in any convenient manner, whereby their distance apart may be
effectually adjusted. They aro suitably grooved or roughened on their face, and
are made by preference of hard metal, and may be chilled or case hardened for
durability.
The material to be ground or kibbled enters the grinding surfaces near to the
axis, and first passes along the angular grinding surface until it reaches the apex
of the angle, and then passes along between the outer surfaces in the opposite
direction until it has reached the exit, where it falls into a shoot. These angles
may be continued to any desired extent.
By this means the grinding surfaces are kept as close to the axis as possible,
and consequently less power is required to drive them.
To the casement and outside the revolving grinder I form a wire gauze cylinder
of any desired mesh, and mount a brush on the outside of the revolving grinder
Dmine S71

page_text: which brushes the four through the wire gauze and out into a spout, and the bran
passes away respectively to another spout at the end of this cylinder or other
convenient part.
When fitted with this dressing arrangement it is very suitable as a mill for
domestic purposes.
As high speed of the grinding surfaces may in some cases be needed, I form a
small mitre wheel upon the fixed part of the casement, and upon a carrying pin
attached to a lever arm, which may form the turning handle or driving pulley, I
mount another mitre wheel, which revolves therewith, and then key to the axle
the third mitre wheel, so that by the rotation of the handle or pulley and the
contact of the mitre wheel thereon with the fixed mitre wheel on the casement a
greater speed is imparted to the mitre wheel on the axis which carries the revolving
grinder.
The corn or other material to bo ground or kibbled is fed through a hopper
having an adjustable valve to regulate such feed.
This Invention is also applicable to roller grinding mills, and consists in forming
the outer surfaces of the rollers with deep annular V grooves, which are interposed
by the corresponding annular rings on the opposite roller; or they may be met in
a similar manner by a concave or convex surface, and by the roughening or
grooving of these said surfaces greater grinding facilities are obtained than
heretofore.
For crushing or grinding oil cake I sometimes place a corrugated knife or cutter
between the rollers on the underside, so that the pieces of oil cake or other material
passing between the rollers shall be cut and further reduced by the action of this
knife or cutting bar, which is adjustable.
This knife or cutter may form as it were a double concave and of an inverted
V section, and may have its surfaces roughened, as in the case of grinding corn or
other substances.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Edwin Phillips in the Great Seal Patent Office on the 19th May
1882.
EDWIN PHILLIPS, of Fleet Street, in the City of London, Mechanical Engineer.
"IMPROVEMENTS IN MILLS FOR GRINDING AND DRESSING CORN, PARTS OF WHICH
INVENTION ARE ALSO APPLICABLE FOR OTHER GRINDING PURPOSES."
The primary object of this Invention is to obtain a greater amount of grinding
surface within a given diameter than hitherto, and to effect this object the grinding
surfaces are mounted preferably around an horizontal axis, one grinding surface
being fixed thereto. The other grinding surface is secured to the frame or casing,
which is stationary. The revolving grinder mounted on the axis has a deep
annular groove or grooves formed therein of a V shape, and the shape of the fixed
grinding surfaces corresponds therewith. The said grinding surfaces are brought
up together in any convenient manner, whereby their distance apart may be
effectually adjusted. They are suitably grooved or roughened on their face, and
are made by preference of hard metal, and may be chilled or case hardened for
durability.
The material to be ground or kibbled enters the grinding surfaces near to tho
axis, and first passes along the angular grinding surface until it reaches the apex
of the angle, and then passes along between the outer surfaces in the opposite
direction until it has reached the exit, where it falls into a shoot. These angles
may be continued to any desired extent.
By this means the grinding surfaces are kept as close to the axis as possible, and
consequently less power is required to drive them.
In the accompanying Drawings Figure 1 is a sectional elevation and Figure 2 is
a front view. a is the shaft or axis, to which one grinding surface or part b is
attached. The other grinding surface c is secured to the framework d, or may
form part thereof. e is the hopper and fis the lower part of same, into which the
material or grain to be ground or reduced is admitted, which may be regulated in
any convenient manner, such as by a throttle g or any suitable well known device.
The end of the spindle a to which the one grinding part b is attached is capable of
being adjusted laterally by the set screw h, by the regulation of which the desired
sample is produced. The reduced material or grain passes away from the grinding
surfaces b and c into the shoot i. The whole is carried on a suitable framework.
To the casement and outside the revolving grinder I may form a wiro gauze or
perforated cylinder of any desired mesh or gauge, and mount a brush on the
outside of the revolving grinder, which brushes the flour through the wire gauze
and out into a shoot, and the bran passes away respectively to another shoot at
the end of this cylinder or other convenient part.
Figure 3 is a vertical section of such an arrangement. A is the brush mounted
on the one side of the rotating grinder b, although it may be secured to the
stationary grinding part c, and the wire or perforated cylinder B connected to the
rotating grinder, but I prefer. the former. i is the shoot, into which the flour
passes, having been brushed through the perforated cylinder B, but the bran being
unable to pass through these perforations is brushed out at the side into the
shoot j. For this purpose the brushes in some cases may be spirally arranged.
When fitted with this dressing arrangement it is very suitable as a mill for
domestic purposes.
In Figure 3 I have shown a spiral spring, which tends to press the washer k'

page_text: to the side of the casing d, and prevents any oil entering the grinding parts, and
also tends to feed the corn or other material continuously to the grinding parts.
As high speed of the grinding surfaces may in some cases be desirable, I form a
small mitre wheel upon the fixed part of the casement, and upon a carrying pin
attached to a lever arm, which may form the turning handle or driving pulley, I
mount another mitre wheel which revolves therewith, and then key to the axle
the third mitre wheel, so that by the rotation of the handle or pulley and the
contact of the mitre wheel thereon with the fixed mitre wheel on the casement a
greater speed is imparted to the mitre wheel on the axis which carries the revolving
grinder.
This arrangement is also shown at Figure 3. is the mitro or bevil wheel upon
the casement d; m is the carrying pin, on which is mounted the mitre or bovil
wheel n.
The third mitre or bevil wheel o is keyed on the shaft a, and by the
rotation of the handle or pulley C a greater speed of the shaft and grinding
surfaces is obviously attained.
Figure 4 shows another modification of my Invention where the spindle a is
vertical, and the grinding surfaces are similar to those previously described. bis
the grinding part fixed to the spindle a, and c is the corresponding part, forming
as it were a part of the casement. e is the hopper, and the corn to be ground or
kibbled or other material to be reduced is fed into the hopper and the supply
regulated by an adjustable valve, or in any other convenient manner. It will be
obvious that there may be a series of angles similarly arranged to those shown at
Figure 5, but adapted to the vertical position.
According to another modification this Invention is also applicable to roller
grinding mills, and consists in forming the outer surfaces of the rollers with deep
annular V grooves, which are interposed by the corresponding annular rings on
the opposite roller; or they may be met in a similar manner by a concave or
convex surface, and by the roughening or grooving of these said surfaces greater
grinding facilities are obtained than heretofore.
D, D, are rollers of this construction, and shown in plan at Figure 6 and
elevation at Figure 7; one roller may revolve at a greater speed than the other.
In plun at Figure 8 and elevation at Figure 9 I have shown such a roller D met
by an adjustable concave surface E of a corresponding shape.
For crushing or grinding oil cake I sometimes place a corrugated knife or cutter
between the rullers on the under side, so that the pieces of oil cake or other
material passing between the rollers shall be cut and further reduced by the action
of this knife or cutting bar, which may be adjustable.
This knife or cutter may form as it were a double concave and of an inverted
section, and may have its surfaces roughened, as in the case of the parts for grinding
corn or other substances.
This blade or interposing cutter bar F is shown at Figure 7, in which the shape
or form of the teeth for crushing oil or other cake or material is shown at d, d'.
Having thus described the nature of my Invention, and in what manner the
same may be accomplished, I would have it understood that what I claim is,-
First. In mills for grinding corn or other material the employment of a rotating
part having a deep annular groove or grooves therein, the sides of which are
roughened, and formed angular or curved grinding surfaces, substantially as
described and illustrated.
Second. Dressing or separating the bran from the flour by means of brushes and
wire gauze, or perforated cylindrical screens in connection with the rotating part,
substantially as described and illustrated.
Third. The employment of a spiral spring and washer around the spindle for the
purposes set forth.
Fourth. The application to mills of a train of bevil wheels for the purpose of
increasing the speed of the spindle, and the griuding part or parts connected
thereto, substantially as described and illustrated.

page_text: Fifth. The formation of rollers with annular roughened grooves met by other
rollers geared together or met by concaves, substantially as described and
illustrated.
Sixth. The employment of an interposing blade adjustably or not, as shown at
Figure 7, for further reducing oil or other cake or material passing out between
the grinding surfaces, the said blade being applicable also to existing cake or bone
mills, substantially as described and illustrated.
In witness whereof, I, the said Edwin Phillips, have hereunto set my hand
and seal, this Nineteenth day of May, in the year of our Lord One thousand
eight hundred and eighty two.
Witness,
HENRY H. LEIGH,
Of the Firm of Phillips & Leigh,
Engineers & Patent Agents,
7, Southampton Buildings,
London, W.C.
E. PHILLIPS. (L.S.)