AN IMPROVED PROCESS OF, AND APPARATUS FOR, DRESSING FLOUR GRIT AND SIMILAR SUBSTANCES to be as follows:-
Year: 1884

page_text: I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co, Patent Agents,
Southampton Buildings, London, in the County of Middlesex, do hereby declare
the nature of said invention for "AN IMPROVED PROCESS OF, AND APPARATUS
FOR, DRESSING FLOUR GRIT AND SIMILAR SUBSTANCES to be as follows:-
"
.
This Invention relates to a process of, and apparatus for, dressing flour grit and
other pulverulent or granular substances.
The said invention comprises a machine having a shaft provided with a number
of pins and revolving within a sifting cylinder.
The operation of this machine is based upon the centrifugal movement imparted
to the particles of flour or the like, by the rotary motion of the said pins, whereby
these particles are constantly driven toward the interior surface of the cylindrical
sieve. The material then passes through the meshes of the sieve and leaves the
machine assorted according to the different degrees of fineness of the same.
In carrying the said invention into practice I apply to a shaft, or upon a
cylinder or socket fitted upon this shaft, a number of pins. These pins are
arranged perpendicularly to the axis of the shaft in the form of a helix or
otherwise. Upon this shaft is loosely fitted, by means of suitable arms, a sifting-
cylinder of any desired construction and to which is imparted a rotary movement
The sorting of the flour or the like into different qualities is effected, either in the
ordinary manner by means of several discharge-boxes or hoppers arranged beneath
the cylinder and each receiving a certain quality; or this sorting may be effected
by fitting concentrically upon each other, several sifting cylinders of a successively
increasing diameter and by imparting to these cylinders a rotary movement.
Each of these sifting cylinders is provided, either on one end or on both ends, with
a discharge-hopper serving for the discharge of the coarser qualities of flour, whilst
the finer particles of flour are constantly driven, by centrifugal force, through the
apertures of the consecutive sifting-cylinders. The finest quality leaves the machine
through the discharge-hopper of the outmost sifting cylinder.

page_text: The sifting cylinders are enclosed in a box or case. The shaft is driven by a
belt-pulley and the sifting cylinder by another pulley. If several concentric
sifting cylinders are employed as herein before indicated, the number of hollow
shafts and of belt-pulleys, by means of which these cylinders are driven, must be
increased correspondingly to the number of these sifting cylinders.
The sifting cylinders are generally arranged horizontally It is, however, obvious
that the shaft, as well as the sifting-cylinders, may also be arranged vertically
without departing from the nature of this invention.
The above described machine is simple in construction and works in an
exceedingly rapid manner as the revolving pins offer very little resistance to
the particles of flour or the like; so that the improved sifting-machine may be
operated with a very trifling expenditure of driving power.
Dated this 98th day of Janne 1001
HASELTINE, LAKE & Co.,
For the Applicant.

page_text: "
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake, and Co, Patent Agents,
Southampton Buildings, in the County of Middlesex, do hereby declare the nature
of my invention for AN IMPROVED PROCESS OF, AND APPARATUS FOB, DRESSING
FLOUR, GRIT, AND SIMILAR SUBSTANCES" and in what manner the same is to be:
performed, to be particularly described and ascertained in and by the following
statement:-
This invention relates to a process of, and apparatus for, dressing flour, grit or
other pulverulent or granular substances.
The said invention comprises a machine having a shaft provided with a number
of pins and revolving within a sifting cylinder.
The operation of this machine is based upon the centrifugal movement imparted
to the particles of flour or the like by the rotary motion of the said pins, whereby
these particles are constantly driven toward the interior surface of the cylindrical
sieve. The material then passes through the meshes of the sieve and leaves the
machine assorted according to the different degrees of fineness of the same.
In the accompanying drawing.
Figure 1 is a longitudinal section of a machine constructed according to this
invention, and
Figure 2, is a transverse section of the same.
Upon a shaft A or upon a cylinder or socket fitted upon this shaft are secured
a number of pins a. These pins are arranged perpendicularly to the axis of the
shaft in the form of a helix or otherwise. Loosely fitted upon the shaft A by
means of suitable arms, is a sifting-cylinder B of any desired construction, to which
imparted a rotary movement.
The sorting of the flour or the like into different grades is effected in the ordinary
manner by means of several discharge-boxes or hoppers arranged beneath the
cylinder B and each receiving a certain quality.
The sorting may be effected by fitting concentrically upon each other several
Bifting cylinders of a successively increasing diameter and imparting to these
cylinders a rotary movement. Each of these sifting cylinders is provided either on
one end or on both ends, with a discharge-hopper serving for the discharge of the
coarser qualities of flour or the like, whilst the finer particles are constantly driven,
by centrifugal force, through the apertures of the consecutive sifting-cylinders.
The finest quality leaves the machine through the discharge-hopper of the outer-
most sifting cylinder.
The sifting cylinder or cylinders are enclosed in a box or case C.
The shaft A is driven by a belt-pulley D and the sifting cylinder by another
pulley E. If several concentric sifting cylinders are employed as herein before
indicated, the number of hollow shafts and of belt-pulleys by means of which
these cylinders are driven must be increased, correspondingly to the number of
these sifting-cylinders.
As shown in the drawing, the sifting cylinders are arranged horizontally. It is,
however, obvious that the shaft A as well as the sifting cylinders may be arranged
vertically without departing from the nature of this invention.
The above described machine is simple in construction and works in an ex-
ceedingly rapid manner, as the revolving pins offer very little resistance to the
particles of flour or the like so that the improved sifting-machine may be operated
with a very trifling expenditure of driving power,

page_text: Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is :-
First. The above described process of sifting flour or the like, consisting in
submitting the material to be sifted to the action of pins attached to a shaft
revolving within a sifting-cylinder; the said revolving pins imparting to the said
material a centrifugal motion, in consequence of which it is driven through the
apertures or meshes of the sifting-cylinder and sorted according to the different
degrees of fineness of the same, substantially as described.
Second. An improved sifting-machine operating in such a manner that a certain
number of pins, perpendicularly fitted upon a revolving shaft, impart a centrifugal
motion to the flour or other material within a sifting-cylinder, whereby the said
material is sifted through the apertures or meshes of the said cylinder and the
different qualities sorted, substantially as specified.
Third. In a sifting-machine, the arrangement of a shaft A provided with pins a
and rotated by means of a belt-pulley D inside a cylinder B of any desired con-
struction, the said cylinder being mounted loosely, by means of cross-arms and
hollow shafts or sockets, upon the said shaft A and rotated by means of a belt-
pulley E; all the described parts being enclosed in a box or case C, substantially
as shown and specified.
Fourth. In a sifting-machine of the described construction, the application of
several sifting cylinders arranged concentrically one within the other, the sifting
and sorting of the flour being consecutively effected from each inner cylinder into
the next outer one, each of these cylinders being open at one end or at both ends
so as to allow of the discharge of the different qualities of the sorted material,
substantially as shown and set forth.
DL: 7 d. of Ontahan 100%.