IMPROVEMENTS IN MACHINES FOR THE TREATMENT OF MIDDLINGS TO FACILITATE THE SEPARATION OR PURIFICATION THEREOF
Year: 1882

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LETTERS PATENT to William Robert Lake, of the firm of Haseltine, Lake
& Co, Patent Agents, Southampton Buildings, London, for an Invention
of "IMPROVEMENTS IN MACHINES FOR THE TREATMENT OF MIDDLINGS TO
FACILITATE THE SEPARATION OR PURIFICATION THEREOF
ور
A communication
to him from abroad by Charles Brown, of St. Louis, Missouri, United States
of America, Miller
PROVISIONAL SPECIFICATION left by the said William Robert Lake at the
Office of the Commissioners of Patents on the 19th September 1882.
WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake, and Co, Patent Agents,
Southampton Buildings, London, "IMPROVEMENTS IN MACHINES FOR THE TREAT-
MENT OF MIDDLINGS TO FACILITATE THE SEPARATION OR PURIFICATION THEREOF.'
"
[A communication to him from abroad by Charles Brown, of St. Louis, Missouri,
United States of America, Miller.]
This Invention relates to machines for effecting the detaching of crushed
middlings, or the pulverizing of the caked white flour of crushed middlings,
sufficiently to enable it to be ultimately separated by bolting, from the germs
and bran.
In constructing a machine according to this invention I provide a suitable
frame having a casing and a hopper; within the said casing is a cylinder attached
to a shaft and turning in suitable bearings. The surface of the said cylinder is
covered with fine wire gauze.
A flexible concave made preferably of cloth, such as duck or the like, is held
against the gauze by means of supports, one of which may be a rod held at its
ends in the casing and the other a clamp which receives and holds the edge of
the cloth, and is made vertically adjustable by means of screws; the said clamp
works up and down inside the casing, and is kept from being drawn toward the
cylinder, by means of projections suitably arranged. By raising the clamp the
cloth concave is brought nearer to the gauze. The concave is preferably prepared
by doubling the cloth and then pasting together that portion of the folds which
Price 6d 1

page_text: bears against the cylinder. The cylinder having the gauze as described, constitutes
one of the surfaces used in crushing the middlings, and the cloth concave the other
surface.
The crushed middlings are fed from the hopper so as to fall between the gauze
surface of the cylinder and the concave, as the cylinder is rotated. The gauze
serves to move and to gently rub the middlings along and against the concave,
pulverizing the flour thereof in so doing, and finally discharging the contents. The
discharge from the hopper is regulated by an adjustable slide, and a guard
prevents the middlings from being carried too far upwards upon the cylinder. By
opening suitable doors in the casing the clamp can be reached and adjusted.
In a modification of this invention provide for detaching middlings of an
exceedingly tough nature. The casing, the hopper, and the frame are constructed
substantially as herein before described. The cylinder also is attached to a shaft
and rotates. The cylinder, surface however is not wrapped with the wire gauze,
but is preferably slightly roughened, and the roughening in question, is conveniently
produced by covering the said cylinder with corrugated india-rubber. The concave
is flexible and made preferably of duck, and held by vertically-adjustable supports
as before described. The upper surface of the said concave is provided with wire-
gauze preferably slightly narrower than the concave. The projecting edges of the
concave are frayed out, the object being to provide means for packing the joints
between the edges of the concave and the casing-walls. The frayed edges come
against rings which are attached to the under side of the said casing-walls. The
said rings are made detachable to enable them to be removed from time to time
There is an opening to provide for the escape of foreign matter which may collect
at the ends of the cylinder.
By reason of the gauze being upon the concave instead of upon the cylinder,
the middlings are subjected for a longer time to a rubbing treatment, and thereby
tougher middlings can be thoroughly detached. The construction is also more
durable. The middlings are discharged as before. The guard for preventing the
middlings from being carried too far upwards upon the cylinder is provided with
a leather face which nearly, or quite, touches the surface of the said cylinder. Any
suitable form of guard, however, may be used.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Robert Lake in the Great Seal Patent Office on the
19th March 1883.
WILLIAM ROBERT LAKE, of the firm of Haseltine Lake, and Co., Patent Agents,
Southampton Buildings, London "IMPROVEMENTS IN MACHINES FOR THE TREAT-
MENT OF MIDDLINGS TO FACILITATE THE SEPARATION OR PURIFICATION THEREOF
"
A communication to me from abroad by Charles Brown of St Louis, Missouri,
United States of America, Miller.
This invention relates to machines for effecting the detaching of crushed
middlings, or the pulverizing of the caked white flour of crushed middlings,
sufficiently to enable it to be ultimately separated by bolting; from the germs
and bran.
In the accompanying drawing
Figure 1 is a perspective view of a machine, constructed according to this
invention
Figure 2 is a vertical transverse section
Figure 3 is a detail view of the concave before its folds are cemented together.
Figure 4 is a vertical section illustrating a modification in the construction of
the cylinder-surface and its concave
Figure 5 is a plan of a portion of the concave shewn in Figure 4.
Figure 6 is a detail sectional view of a portion of the cylinder and casing shown
in Figure 4
Figure 7 a detail plan view of a portion of the concave shown in Figures 4
and 5, and
Figure 8, is an edge view of a portion of the concave shown in Figures 4, 5, 7.
Similar letters of reference indicate corresponding parts in the several figures.
A indicates the improved detacher, having the frame, B, the casing C, and the
hopper D. E indicates a cylinder attached to the shaft e, and turning in bearings e¹.
The surface e of the said cylinder is covered with fine wire-gauze F and preferably
with wire cloth known as "N° 30"
G indicates a flexible concave, made preferably of cloth such as duck or the like
which is held against the gauze F by means of the supports H, I, one of which, I;
may be a rod held at its ends in the casing C and the other, H, a clamp which
receives and holds the edge of the cloth, and is made vertically adjustable by
means of the screws h; the said clamp works up and down inside the casing
and is kept from being drawn toward the cylinder by means of projections h¹
or by other suitable means. By raising the clamp the concave G is brought
nearer to the gauze. The concave is preferably prepared by folding the cloth, as
shown at g g Figure 3, and then pasting together that portion of the folds which
bears against the cylinder. The cylinder having the gauze, as described, constitutes
one of the surfaces used in crushing the middlings, and the cloth concave the other
surface.
The crushed middlings are fed from the hopper D so as to fall between the
gauze F, and the concave G; the cylinder E is rotated in the direction indicated
by the arrow J, Figure 2. The gauze serves to move, and to gently rub, the
middlings along and against the concave, pulverizing the flow thereof in so doing
and finally discharging the material at the end g¹ of the concave whence it falls
and is discharged from the machine at K, as indicated by the arrows J¹ in Figure 2.
The discharge from the hopper is regulated by the adjustable slide L, and a guard M,

page_text: prevents the middlings from being carried too far upward upon the cylinder. By
opening the door N in the casing the clamp H can be reached and adjusted; the
casing is also provided with other doors N
In a modification of this invention shown in Figures 4, 5, 6, 7, 8 I provide
for detaching middlings of an exceedingly tough nature. The casing C, the
hopper D, and the frame B, are constructed substantially as shown in Figures 1
and 2. The cylinder E, is attached to a shaft e, and rotates in the direction
indicated by the arrow J, as in Figure 2. The cylinder surface e² however is not
covered with the wire gauze, but is preferably slightly roughened, and the said
roughening is conveniently produced by covering the said cylinder with corrugated
india rubber e³. The concave G which is flexible and made preferably of duck is
carried by the vertically adjustable supports H I similar to those shown in Figure 2.
The upper surface of the concave is provided with wire-gauze F (Figures 4, 5,
6, 7, 8). The concave is preferably slightly wider than the gauze and its
projecting edges 92 92, are frayed out as shewn in Figure 7, the object being to
provide means for packing the joints between the edges of the concave and the
casing walls, c c. The frayed edges g² g² come against the ring c. Figures 5 6, 7,
which is attached to the inner side of the said casing walls c c. The said rings are
made detachable to enable them to be removed from time to time-An opening c².
Figures 5, and 6, is provided to allow the escape of foreign matter which may
collect at the ends of the cylinder.
The operation of the machine constructed according to this modification is similar
to that herein before described, the crushed middlings being fed between the cylinder
surface and the wire-gauze upon the concave. By reason of the gauze being upon
the concave instead of upon the cylinder, the middlings are subjected for a longer
time to a rubbing treatment, and thereby tougher middlings can be thoroughly
detached; the construction is also more durable. The middlings are discharged as
before. The guard M, Figure 4 for preventing the middlings from being carried
too far upwards upon the cylinder is provided with a leather face m which nearly
or quite, touches the surface of the said cylinder; any suitable form of guard
however may be used.
Having thus fully described the said invention as communicated to me by my
foreign correspondent, and the manner of performing the same, I wish it understood
that I claim
First The combination of the cylinder E the gauze F, and the concave G
substantially as described with reference to Figure of the drawing
Second The combination of the cylinder E, the gauze F the concave G, and
means for adjusting the gauze and concave relatively to each other substantially as
described with reference to Figure 2 of the drawings
Third The combination of the cylinder E, the gauze F, the concave G, the rod I,
and the adjustable clamp H, substantially as described with reference to Figure 2
of the drawing
Fourth The combination of the casing C, the hopper D, the cylinder E, the
gauze F, and, the concave G substantially as described with reference to Figure 2
of the drawing
Fifth The combination of the cylinder E, and the concave G having the wire
gauze F substantially as described with reference to Figures 4, 5, 6 and 7 of the
drawing.
Sixth The combination of the cylinder E, and the concave G, having the wire
gauze F and means for adjusting the said concave and cylinder relatively to each
other, substantially as described with reference to Figure 4 of the drawing
Seventh The combination of the casing C, the cylinder E, and the_concave G,
having the wire gauze F substantially as described with reference to Figure 4 of
the drawing
Eighth The combination of the walls c c, the ring c, and the concave G,
substantially as described with reference to Figures 5, 6, and 7 of the drawings
Ninth. The combination of the walls cc and the rings c¹ cl having the

page_text: openings, c² c² substantially as described with reference to Figures 5 and 6 of the
drawings
Tenth In a middlings detacher, a flexible concave G provided with the wire
gauze F substantially as described with reference to Figures 4 and 5 of the
drawing
Eleventh In a middlings-detacher the combination of the cylinder E and the
wire-gauze F, the said wire gauze being held against the surface of the said cylinder
for the purpose described
Twelfth The combination of the cylinder E having the roughened surface e³
and the concave G having the wire gauze
Thirteenth A middlings detacher cylinder E having a roughened surface e³ for
the purpose described
In witness whereof I the said William Robert Lake have hereunto set my
hand and seal this Seventeenth day of March in the year of our Lord One
thousand eight hundred and eighty three.
7M DART