Improvements in Machines for Grinding Corn and like Substances.
Year: 1899

page_text: Date of Application, 18th Dec., 1899
Complete Speciâcation Left. 2nd Aug. 1900-Accepted. 6th Oct. 1900
PROVISIONAL SPECIFICATION.
Improvements in Machines for Grinding Corn and like Substances.
A communication from abroad by H. AND G. ROSE FRERES, of Poissy, Seine &
Oise, France, Manufacturers.
1, WILLIAM LLOYD WISE, of No. 46, Lincoln's Inn Fields, in the County of
London, Consulting Engineer and Chartered Patent Agent, do hereby declare
the nature of this invention to be as follows:-
These improvements relate to that class of machines in which the corn, instead
of being acted upon or crushed between rollers or disks, is subjected to a series
of successive shocks or blows which cause a disintegration of the same to take
place.
These improvements consist of a machine for effecting a disintegration of corn
or like substance on the principle herein before set forth.
The
Ine improved machine comprises substantially a drum which revolves within
a casing into which the corn to be ground is fed by any suitable device.
periphery of the drum is provided with a series of ribs arranged parallel or
obliquely to the axis of the shaft upon which the drum revolves. The casing is
so tormed that its interior is parallel to the curvature of the drum to the extent
of say one third of the circumference of the latter and, on that parallel portion
it is likewise provided with similar ribs lying parallel to each other and directed
towards the ribs formed on the drum. Each of the ribs, both on the interior of
the casing and on the exterior of the drum, is composed of an independent rod
which, in cross section, assumes the shape of a cylinder upon which is formed a
triangular projection, constituting an acting face to which the corn to be dis-
integrated is subjected. The two sets of ribs are or may be adjustable, either
singly or collectively, in order that the inclination of the acting faces of the one
set, say the set on the interior of the casing, may be varied with respect to the
acting faces of the other set, for the purpose of securing increased or decreased
cffect upon the corn and more or less violent disintegration of the same.
Corn or other like material being introduced into the machine is fed to the
revolving drum and is subjected to the action of the ribs thereon co-operating
with the stationary ribs on the interior of the casing. Each grain falls by gravity
onto the first revolving rib it meets with on the revolving drum, and is received
by the acting face of the rib, whereby it is violently projected by centrifugal force
against an acting face of one or the other adjacent rib on the interior of the sta-
tionary casing, whereupon it again falls by gravity upon another acting face of
a revolving rib and again projected against another stationary rib and so on a
number of times in succession until it is thoroughly disintegrated, the product
leaving the machine through a suitable outlet.
Dated this 18th day of December 1899.
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C.,
Chartered Patent Agent.

page_text: Improvements in Machines for Grinding Corn and like Substances.
A communication from abroad by H. AND G. ROSE FRÈRES, of Poissy, Seine
Oise, France, Manufacturers.
&
I, WILLIAM LLOYD WISE, of 46, Lincoln's Inn Fields, in the County of London,
Consulting Engineer and Chartered Patent Agent, do hereby declare the nature
of this invention and in what manner the same is to be performed, to be par-
ticularly described and ascertained in and by the following statement:-
These improvements relate to that class of machines in which the corn, instead
of being acted upon or crushed between rollers or disks, is subjected to a series
of successive shocks or blows, which cause a disintegration of the same to take
place.
These improvements consist of a machine for effecting a disintegration of corn
or like substance on the principle herein before set forth.
The main advantage resulting from this particular method of grinding resides
in that the nucleus of the grain separates from the membrane in large granules
with a hitherto unobtainable minimum quantity of flour, while at the same time
allowing the membrane, i.e. the bran, to remain of a very large size.
The
The improved machine comprises, substantially, a drum which revolves within
a casing into which the corn to be ground is fed by any suitable device.
periphery of the drum is provided with a series of ribs arranged parallel or
obliquely to the axis of the shaft upon which the drum revolves. The casing is
so formed that its interior is parallel to the curvature of the drum to the extent
of say one third of the circumference of the latter and, on that parallel portion,
it is likewise provided with similar ribs lying parallel to each other and directed
towards the ribs formed on the drum. Each of the ribs, both on the interior of
the casing and on the exterior of the drum, is composed of an independent rod
which, in cross section, assumes the shape of a cylinder upon which is formed a
triangular projection constituting an acting face to which the corn to be dis-
integrated is subjected. The two sets of ribs are or may be adjustable, either
singly or collectively, in order that the inclination of the acting faces of the one
set, say the set on the interior of the casing, may be varied with respect to the
acting faces of the other set, for the purpose of acting with more or less force upon
the corn and grinding it to the different sizes required.
Corn or other like material being introduced into the machine is fed to the
revolving drum and is subjected to the action of the ribs thereon co-operating
with the stationary ribs on the interior of the casing. Each grain falls by gravity
onto the first revolving rib it meets with on the revolving drum and is received
by the acting face of the rib, whereby it is violently projected by centrifugal force
against an acting face of one or the other adjacent rib on the interior of the sta-
tionary casing, whereupon it again falls by gravity upon another acting face of
a revolving rib and again projected against another stationary rib and so on a
number of times in succession, until it is thoroughly disintegrated, the product
leaving the machine through a suitable outlet.
In the accompanying drawings:
Fig. 1 is a front elevation partly in section and Fig. 2 a side elevation.
Fig. 3, on a larger scale, is a section on the line A A, Fig. 1, showing the man-
ner in which the ribs are fitted in the casing and on the drum.
The frame 1 is covered by a casing 2 to which is fitted an ordinary distributor 3,
the gate 4 of which may be adjusted by a controlling device 5, Fig. 2. Upon the
shaft 6 of the distributor 3 is mounted an internally toothed wheel 7 gearing into

page_text: a pinion 8 keyed upon a shaft 9 carrying a pulley 10 which is driven from the
main shaft 11 by a belt 12. Upon the main shaft 11, driven by a fast pulley 13,
is fastened a rotary drum 14, the periphery of which is provided with transverse
adjustable ribs 15. On the inside and upon about one third of its inner periphery,
the stationary casing 2 is provided with similar ribs 16 which are likewise adjust-
able and are arranged opposite to the ribs 15 of the drum.
Each of the ribs 15, 16 assumes, in cross-section, the shape of a heart more or
less, aud is mounted upon an axis 17, 18, Fig. 3. The axis 17 of each rib 15 is
provided, at each end, with a nut 19, by which the rib may be made fast when
once adjusted. The axis 18 of each rib 16 is borne at one end, by a trunnion in
the casing 2, whilst its opposite end carries a lever 20; a bar 21 connects a suit-
able number of levers 20 together into one group, and one of the said levers is
extended into an arm 22, the end of which carries a knob 23. In the arm 22 is
secured an axis 24 which passes through a grooved sector 25 fastened to the
casing 2. The ribs 16 of the casing 2 being fastened upon their axis 18, it is
obvious that, by operating the shaft 22, all the ribs belonging to one group will
receive rotary motion and that, consequently, the inclination of their acting faces
will be caused to vary. This operation may take place while the machine is at
work and, when once effected, the arm 22 is set by the nut 24. If desired, the
inclination of the groups of ribs may vary with reference to each other. The
same means of regulation, or any other equivalent mechanical means, may be
adopted for the ribs of the drum, although, in practice, it has been ascertained
that good results are obtained by setting the drum ribs once for all at a given
angle and by adjusting the casing ribs alone.
The machine operates as follows: The corn, supplied at 26, is fed by the dis-
tributor 3, passes through the passage 27 and falls onto the active face of the
movable ribs 15, whence it is projected against the active faces of the stationary
ribs 16, again falls onto the ribs 15 and is again projected against the stationary
ribs 16, and so on until it has passed through the whole set of ribs, after which
it drops completely ground into the outlet past the shutters 28, 28. The air
draft produced by the rotation of the drum escapes partly with the ground grain
and partly through the outlet 29 in the direction of the arrows, Fig. 1, together
with a slight amount of products, which are carried along. A visiting door :30)
may be opened while the machine is at work for the purpose of taking out a
sample of the corn or material and ascertaining the treatment it has undergone.
The operating devices (20, 21, 22, 23, 24, 25) which belong to the various groups
of stationary ribs 16 are offset, that is to say, they are alternately arranged on
both sides of the casing 2, for the purpose of enabling their being readily fitted
into place.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is:--
1. A machine for grinding corn and other substances, comprising an arrange-
ment of stationary ribs 16 and movable ribs 15, adjustable with reference to each
other, for the purpose of varying the relative inclination thereof and thereby
varying the grinding action, substantially as described and shown.
2. The hereindescribed method of fitting the stationary ribs 16, so that they
shall be adjustable, either singly or collectively, by means of an arm 22 operated
from the outside and actuating the ribs in groups, substantially as described and
shown.
Dated this and dat
1000