Year: 1888

page_text: 4444 ици
I, CARL HAGGENMACHER, of Rudolfs quai S, Buda-Pest, in the Kingdom of Hungary,
Director of Grinding Mills, do hereby declare the nature of this invention to be as
follows:-
My invention relates to an improved construction of apparatus for grading or
sorting grits or other pulverulent substances, more particularly applicable as middlings
purifiers, and which combines a very efficient action with ready means for cleansing
the several parts.
The invention consists mainly in arranging a series of step-like gratings, one behind
and somewhat below the other, and placed at a gradually increasing angle to the
vertical, in the direction from the inlet to the outlet end of the apparatus, so that air
passages which are formed between each two gratings are made to widen out to a
corresponding extent from the bottom, where the air enters, to the top, where it issues
into an air chamber.
Each of the gratings is carried in a frame that can be slid in and out of guides at
the sides of the enclosing casing, so that the gratings can at any time be readily
removed for cleansing.
At the front or feeding end of the purifier is arranged a hopper with feed roller
and regulating slide through which the grits &c. to be graded are introduced in a thin
layer on to the lower end of the first grating, a channel for the entrance of air being
also provided between the inlet from the hopper and the first grating.
The bars of the grating are by preference formed with a triangular cross section
and arranged so as to present downwardly inclined interstices that narrow from the
upper to the lower side, where they constitute narrow slits that are directed towards
the wide side of the interstices of the next grating behind, the bottom interstice of
each grating being in such a position as to deliver the grits or middlings passing
through it into the bottom interstice of the next grating.

page_text: Means being provided for producing upwardly directed currents of air through the
before mentioned channels between the gratings, such as by causing the before
mentioned air chamber above the gratings to communicate by adjustable openings
with the suction pipe of an exhaust fan, the action of the apparatus will be as
follows.
The grits passing in from the hopper towards the first grating, being caught by
the upward current of air, will be carried upward and will fall in a graduated manner,
according to the varying weight or gravity of its particles, into the several interstices
of the grating, the largest and heaviest being deposited in the bottom interstice and
the smallest and lightest pass into the top one, while the dust or stive will be drawn
up into the air chamber, where it will either fall into a horizontal conveying worm, or
be conveyed by the exhaust fan into a stive room or other receptacle. The grits &c.
falling in the above graduated manner into the interstices of the first grating will
fall thence into the interstices of the next grating, being, during their transit again
subjected to the action of the air current passing up between the two gratings, whereby
a further graduation and separation of grits (middlings &c.) will be effected, and so on,
till the middlings are deposited in the spaces of the last grating, whence the different
grades fall into separate narrow shoots that convey them into receptacles. These
shoots are by preference made moveable, so that they may, at will, be each directed
into separate receptacles, or any two or more may be directed into any one and the
same receptacle, according to the degree of separation required.
The above described purifiers may be arranged in a row, with a conveying worm
for the stive passing through the air chambers of the whole of them.
DL
Fil 1
R
1000
ABEL & IMRAY,
Agents for the Applicant.

page_text: improveшени и штанugs ruriers оr аррагаць 101 Станць
Sorting Grits and other Pulverulent Substances.
I, CARL HAGGENMACHER, of Rudolfs quai 8, Buda-Pest, in the Kingdom of
Hungary, Director of Grinding Mills, 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 :-
My invention relates to an improved construction of apparatus for grading or
sorting grits or other pulverulent substances, more particularly applicable as middlings
purifiers, and which combines a very efficient action with ready means for cleansing
the several parts.
The invention consists mainly in arranging a series of step-like gratings, one
behind and somewhat below the other, and placed at a gradually increasing angle to
the vertical, in the direction from the inlet to the outlet end of the apparatus, so that
air passages which are formed between each two gratings are made to widen out to a
corresponding extent from the bottom, where the air enters, to the top where it issues
into an air chamber.
Each of the gratings is carried in a frame that can be slid in and out of guides
at the sides of the enclosing casing, so that the gratings at any time can be readily
removed for cleansing.
At the front or feeding end of the purifier is arranged a hopper with feed roller and
regulating slide, through which the grits &c. to be graded are introduced in a thin
layer on to the lower end of the first grating, a channel for the entrance of air being
also provided between the inlet from the hopper and the first grating.
I will proceed to describe the construction of the said apparatus with reference to
the accompanying drawings, in which Fig. 1 shews a vertical longitudinal section,
Fig. 2 a cross section on line A B and Fig. 3 a horizontal section on line CD;
Fig. 4 shews a longitudinal section of a modified construction; Figs. 5, 6 and 7 shew
three views of the first frame of grid bars.
The machine consists mainly of the purifier chamber M with the sliding
frames a a¹ a² and a³ and the wind chest W situated above it.
The removeable sliding frames a a¹ a² a³, having horizontal bars with intervening
openings are held by spring catches between the parallel guides b b b¹ b¹ b² f³
and on the sides of the casing in such positions as to leave air passages
between the frames, the lower openings of which are situated in step form, one
below the other, while the said passages are made to widen out gradually towards
the upper end, the frames being thus made to assume more and more inclined
positions from the front towards the back.
The bottom side of the casing has, like the sliding frames, small discharge
openings arranged step-like one above the other, and to which moveable shoots
for the grits are connected by caoutchouc tubing k. The air channel Z arranged
at the top of the air chest W is connected to the suction pipe of an exhaust fan;
the slides serves for regulating the air currents, the direction of which is indicated
by the arrows.

page_text: The grits to be purified is introduced into the hopper e in which it flows over
the feed roller n to the supply opening which is provided with a moveable flap r for
preventing the entrance of air, and from which the grits pass into the lower part of
the first air passage.
Here the constituent particles of the grits are caught by the entering air and are
raised up thereby, the lighter ones being raised higher than the heavier ones, and
they then fall into the several spaces of the first frame, where they escape through
the openings into the second air channel, in which the above described operation is
repeated, and so on, the particles being consecutively passed through the openings and
air passages of all the frames, so that they arrive in a graduated condition in the last
openings q and are there separately collected by the moveable shoots 9.
The air passages are widened out towards the upper end as described, in order
that by the decreasing velocity of the air current, the whole of the grits may be
made to fall back into the openings of the frames, and only the lightest particles
such as husks be carried by the air current into the transporting worm t of the wind
chest W which is made of a large size.
As a number of these machines are generally arranged in a row, the transporting
worm can be made to collect the light particles coming from all or any number
thereof.
The sliding frames a a² a² a³ are made removeable in order that they may be readily
and effectually cleansed.
The collecting shoots g are made moveable in order that those materials that
may have the same value may be readily collected at will into one and the same
receptacle.
The modification shewn at Fig. 4 is suited for coarse or heavy grits, being formed
with air passages of greater inclination in order that the air currents may more
easily raise the heavier particles. In addition, it is expedient to alter the fall of
the escape openings p, that is to say, to increase it for fine grained or light grits,
and to decrease it for coarse or heavy grits.
The number of frames can of course be increased or decreased at will.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
:―
1. A purifying machine for grits operating with exhaust, consisting of a series
of removeable grids or frames with openings so arranged one above the other in
step-forin that more or less inclined air passages widening out towards their upper
end are formed between the frames, so that the grits introduced over the first frame
becomes gradually sorted according to its weight and size by the action of the air
currents, and are collected at discharge openings leading them into corresponding
shoots, substantially as herein described.
2. In purifying machines for grits, a series of grids or frames such as a a¹ a² a³
with openings p situated within a casing M and having air channels between them,
in combination with a feed hopper e, discharge openings q and moveable shoots g,
an air chest W and an exhaust fan, arranged and operating substantially as herein
described with reference to the accompanying drawings.
.
Dated this 5th day of February 188
ABEL & IMRAY,
Agents for the Applicant.