Improvements in Apparatus for Mixing Flour and other materials.
Year: 1892

page_text: Date of Application, 6th Dec., 1892-Accepted, 14th Jan., 1893
COMPLETE SPECIFICATION.
Improvements in Apparatus for Mixing Flour and other materials.
I, JOHN DURAND BANGERT, of 527 North Carrollton Avenue, in the City of
Baltimore and State of Maryland, United States of America, Manufacturer, 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:-
In the description of the said invention which follows, reference is made to the
accompanying drawings forming a part hereof and in which:
Figure 1 is a longitudinal section of Figure 2 taken on the dotted line —x.
Figure 2 is a sectional plan taken on the dotted line y-y Figure 1.
Figure 3 is a cross section of Figure 1 taken on the dotted line z―z.
Figures 4, 5, 6, 7 and 8 are details of the machine on an enlarged scale.
Referring to the drawings, A is the casing of the machine having hinged
shutters, a, b, c, d, e, and f, and the removable ones g and h.
B, C, D, E and F are stationary sieves of different degrees of fineness, the finest
one F, being at or near to the bottom of the casing A, and the coarsest one, B, at
the top. These sieves are secured within frame i.
G is the upper mixer which consists of two side pieces j connected transversely
by separated flat bars k each one of which has pins projecting upwardly there-
from. The lower mixers, denoted by H, consist of two side pieces m similar to
the ones j, connected transversely by angularly placed bars n, the horizontally
placed bars o, and the corrugated wires p. The horizontal bars o have rounded
under faces which are practically in contact with the sieves below them so as to
scrape their upper surfaces. Each mixer is supported by rollers I on studs q which
rest and roll on the frames i of the sieve next below it.
By reference to Figure 6 it will be seen that the rollers I are in recesses J in
the frame i, the object of the said construction being to bring the frame m of the
mixer closely in contact with the inside surface of the frame i of the sieve.
Each mixer has a stem r leading from its front end through the casing A, and
connected to a cross-head K the upper and lower ends of which have longi-
tudinally projecting arms s adapted to slide on the guide bars t secured to the
frame A.
A connecting rod L pivoted to a lug u on the cross-head K is attached to the
crank of a crank shaft M which is driven either by hand through the medium
of crank wheels N as shown, or by a pulley O which is driven by a belt not
shown.
P and Q are rotary fans on shafts a¹ and 6' which extend transversely through
the casing A, and have pulleys c¹ and d¹. The pulleys c¹ are connected by a belt e
shown in dotted lines in Figures 1 and 2, and the pulleys d' are connected by
another belt f¹ also shown by dotted lines in the same figures.
The forward shaft a¹ has a pulley g' connected by a cross belt h¹ to a larger
pulley, on the driving shaft M.
The forward shaft b' has a pulley j¹ which is connected by a straight belt k¹ to a
pulley on the driving shaft M, consequently in the revolution of the driving
shaft, the fans P are driven in one direction, and the ones Q in a reverse direction,
as shown by the curved arrows in Figure 1.
Above the mixers G are beaters R
which consist of pendant vibratory zig-zag bars m' having conical bosses n¹ on
each side. The gudgeons of the beaters are denoted by o¹ see particularly
Figure 3.
S is a chute on the top of the casing A. having at its upper end a hopper T into
which the materials to be mixed are placed.

page_text: U is a removable crossed partition adapted to rest in the hopper T, and divide
the same into four compartments; and to the lower end of this crossed partition
are two hinged doors g' which, when the partition is in place in the hopper, are in a
horizontal position with their swinging ends resting on the edges of the chute;
and they serve when so placed to separate the hopper from the chute.
When, however the crossed partition is to be lifted out, the doors q' fall and
offer no obstruction to the said movement.
V is the primary mixer consisting of a rectangular frame r¹ having gudgeons s¹
resting in the sides of the chute S. One of these gudgeons is extended to
form a shaft and fitted with a sprocket pinion t¹ driven by a chain belt from a
sprocket wheel u¹ on a shaft v supported by suitable bearing boxes w¹ on the top.
of the frame A. This sprocket wheel receives movement from a smaller sprocket
wheel all on the driving shaft M through the agency of a chain belt b".
The frame has spines c" which extend from the sides thereof towards the
centre, and the two sets of spines are staggered, as shown in Figure 3.
A revoluble intermittent feeding device W, is placed in the chute S and it con-
sists of two circular heads d¹¹ connected by a shaft e" which passes through the
sides of the chute S. One end of this shaft has a sprocket wheel f" driven by a
chain belt g from a smaller sprocket wheel h" on the shaft . Between the
heads dare two segments " either one of which when placed across the chute
stops the feed or the passage through the chute of the material from the
hopper T.
Between the segments ¹¹ is a partition " of thin metal, consequently the interior
of the device is divided into two compartments k and which in the revolution
of the device are alternately filled from above and emptied to below.
Beneath this feeding contrivance is a stationary inclined partition m¹ and also
a swinging door n" which is operated by means of a rod o¹¹ leading to the outside
of the apparatus.
A is a screw conveyor in a trough in the bottom of the casing A, driven from a
shaft B, pulley B¹ and a belt D' which runs over a pulley E' on the main driving
.shaft M. This conveyor carries off the material after its manipulation in the
machine.
FF are ducts in the wall of the chute S to admit air to the interior of the
apparatus, and is especially useful when flour is manipulated as flour requires
aerating as well as mixing. Supposing the various parts of the apparatus to
occupy the positions shown, the materials to be mixed are placed in the compart-
ments formed in the hopper by the cross partition U. The said partition is then
withdrawn when the materials fall and come in contact with the primary mixer,
then pass to the intermittent feeding device and thence to the first of the series of
sieves where they are operated upon by the beaters R. They then pass through
the series of sieves and in their passage are thrown up by the fans P and Q and
finally escape to the conveyor A¹ which carries them off in a thoroughly mixed
condition.
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 :-
1. In an apparatus for mixing substances, a hopper having a removable cross
partition with hinged doors at the bottom, substantially as specified.
2. In an apparatus for mixing materials, a casing and sieving devices within
said casing, combined with a feed hopper, a chute leading from the feed hopper to
the interior of the casing, a rotary beater and an intermittent feed within the
chute, the beater being located above the feed, and suitable mechanism to operate
the beater and the feed, substantially as described.
3. In a machine for mixing materials, a casing and a chute for introducing the
material thereto, a series of pendant vibratory beaters located in the casing
immediately below the chute, a series of fixed sieves arranged one above the

page_text: other in the casing below the said beaters, a series of reciprocating mixers above
the sieves, a series of fans between two of said sieves, and suitable mechanism
to operate the mixers and fans, all combined and co-operating substantially as and
for the purpose specified.
Dated this 6th day of December 1892.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.