Improvements in Centrifugal Flour Dressing or Separating Machines or Reels, Scalping Reels and the like, Used in Separating the Different Grades of Granular or Pulverulent Matters.
Year: 1888

page_text: Date of Application, 10th Aug., 1888
Complete Specification Left, 10th May, 1889-Accepted, 15th June, 1888
PROVIDIUNAI DI MULTICATIVA.
Improvements in Centrifugal Flour Dressing or Separating Machines
or Reels, Scalping Reels, and the like, Used in Separating the
Different Grades of Granular or Pulverulent Matters.
I, THOMAS GARDNER, 55, Admiral Street, in the City of Liverpool, Milling
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements which may be attached to almost any
centrifugal flour dressing and separating machine, flour dressing or separating reel
or scalping reel used for dressing or separating the products of wheat or other
grain in the process of milling.
I have found that with the ordinary reels where there is a series of beaters running
the whole length of the machine and without division, either the wind produced by
the beaters or some other cause carries a considerable amount of the good flour and
middlings over with the tailings and prevents the separation of the cellulose.
In order to avoid this I stop off the beaters from one-half or three-quarters of
the length of the machine leaving the terminal one-half, one-third, one-fourth or
other length as the case may be entirely clear of beaters and separated from the
portion containing the beaters by a liaphragm.
In order to cause the grain to travel to the end of the vacant part of the reel I
place between the longitudinal ribs of the reel in this part a series of sloping struts
or bars so that the material shall be led by these bars towards the exit.
The diaphragm is provided with a series of scrapers or edges and pockets. The
scrapers however need not quite touch the reel. The diaphragm preferably revolves
with the reel. The scrapers or edges of the pockets collect the stuff near the diaphragm
into the pockets, and slits in the bottoms of these pockets to the other side of the
diaphragm allow it to fall into the vacant part. Here it quietly revolves without
beaters until it arrives at the end of its travel and is in due course ejected in the
usual manner.
Dated this 9th day of August 1888
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Patent Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Centrifugal Flour Dressing or Separating Machines
or Reels, Scalping Reels, and the like, Used in Separating the
Different Grades of Granular or Pulverulent Matters.
1, THOMAS GARDNER of 55 Admiral Street, in the City of Liverpool, Milling
Engineer, do hereby declare the nature of this invention 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 certain improved devices which may be attached to almost
any centrifugal flour dressing or separating machine or reel, or to any scalping reel
used for dressing or separating the products of wheat or other grain in the process of
milling.
I have found that, with the ordinary reels where there is a series of beaters
running the whole length of the machine without division, either the wind produced
by the beaters, or some other cause, carries a considerable amount of the good flour,
middlings, or other fine matter to be separated, over with the tailings, and prevents
the proper separation of the cellulose or other coarse matter.

page_text: :-
The object of my invention is to avoid this defect, and the manner in which I
accomplish this object may be understood by the accompanying drawings, in which :-
Figure 1 is a longitudinal sectional elevation of an ordinary centrifugal dressing or
separating machine, to which my improvements are applied.
Figure 2 is a cross section of the same on line < x Figure 1.
Such a machine as ordinarily constructed may be briefly described as follows:-
A is the outer casing, supported upon suitable framework B, and provided at its
lower part with a conveyor a, driven from a pulley a'. C is the dressing or separating
reel located within the casing, and adapted to be rotated therein upon bearings c,
by means of a pulley c', which may be connected by a belt to a pulley a³ upon the
shaft of the conveyor a.
The reel is clothed with suitable gauze CC, or the like.
D) is a series of beaters, carried by the driving shaft D' which passes through the
centre of the reel, and is supported upon suitable bearings d outside the reel. The
shaft and beaters are rotated within the reel by a pulley d¹ on one end of the shaft,
the opposite end being provided with a pulley d², whence the conveyor a receives its
motion. E is a fixed feed hopper, and E' a fixed discharge spout, each of them being
provided with a conveyor e. el is a series of blades or pockets, which travel round
with the reel and serve to lift the tailings from the bottom of the same, and discharge
them into the mouth of the discharge spout E¹.
In centrifugal dressing and separating machines such as the above, the beaters D
extend the whole length of the reel, resulting in imperfect dressing or separating as
herein before set forth. To remedy this defect and improve the dressing or separating,
I stop off the beaters D at a suitable point, as shown, say at one half, three
quarters, or other suitable length from the feed end of the machine, leaving the
remaining tail portion entirely clear of beaters. This portion of the machine 1
separate from the rest by a transverse diaphragm or partition F F. The central
portion F of this partition is of circular shape, and is attached to the reel C in such
a manner as to revolve with it. The other part of the partition is a fixture, and the
joint between the two parts is made air-tight by strips fixed on either of the parts.
The inner (or feed) side of the revolving part F of the partition carries one or
more, preferably two, scrapers, edges, or pockets G, arranged more or less radially.
The material which passes down to the tail end of the beaters is caught up by the
scoop-like edges of the pockets as they revolve with the reel, and passed into said
pockets through openings 9 in their sides. Thence the material passes through slits
or openings g¹ in the partition to the opposite side of the latter, into the tail or
vacant portion of the reel, which has no beaters. Here it is quietly rolled about by
the revolution of the reel, without being subject to the more violent action of the
beaters, until it arrives at the tail end of the reel, and is, in due course, discharged
therefrom in the usual manner through the spout E by means of the blades e
aforesaid. In order to assist the onward movement of the material in the vacant
tail portion of the reel, I may provide such portion with sloping struts or bars h
which are placed between the longitudinal ribs C of the reel.
The action of the improved device is as follows:-
The partition F F1 having no openings save the openings g¹, very little of the
finer material (which ought to go through the meshes of the gauze C¹) is driven by
the draught of the beaters or other cause into the vacant tail portion of the reel
Consequently, this portion receives nothing but the coarser material which is in
capable of passing through the gauze C. The vacant portion of the reel may be
clothed with gauze C2 of a coarser mesh than the centrifugal or beater portion, so
that a further separation may be effected before the material is finally discharged
at the spout E¹.
Having now particularly described and ascertained the nature of my sai
invention, and in what manner the same is to be performed, declare that wha
I claim is
1. In a centrifugal dressing or separating machine having beaters, the constructin
of the revolving reel with a vacant tail portion not under the action of the beaters

page_text: and separated from the portion containing the beaters by a transverse partition or
diaphragm, having means as described adapted to transfer the material which collects
at the tail of the beaters into the said vacant part of the reel where it may undergo
a second sorting or dressing, substantially as and for the purposes set forth.
2. A centrifugal dressing or separating reel having a vacant tail portion separated
from the principal portion by a transverse partition or diaphragm and having means
as described adapted to transfer the material into the said vacant portion where it
may undergo a second sorting or dressing substantially as and for the purposes set
forth.
"
Dated this 9th day of May 1889
W. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Patent Agents for the Applicant.