IMPROVEMENTS IN MIDDLINGS PURIFIER AND DUST COLLECTOR COMBINED
Year: 1884

page_text: I RALPH HOWARTH, of 24 Manchester Rd Rochdale in the County of Lancaster.
Corn Miller do hereby declare the nature of my Invention for "IMPROVEMENTS
IN MIDDLINGS PURIFIER AND DUST COLLECTOR COMBINED" to be as follows:-
My invention relates to the construction of a middlings purifier and a dust
collector combined in one machine, such dust collector having its filtering material
so arranged as to form pockets, which pockets by a suitable mechanism are caused
to be shaken and turned inside out, in such a manner as to cause at certain intervals,
a strong vacuum on the dust laden side of the filtering material. The advantages
I gain hereby are firstly, a better means of examining the work being done by the
purifier, secondly, the keeping of each purifier's produce separate, thirdly, lessening
the risk of fire and in most cases a saving of space and a reduction of cost.
For this purpose I preferably connect or arrange the dust collector on the top of
a middling purifier, but in some cases it may be more convenient, to connect the
same either to the side or end thereof, and I set the purifier fan so that it blows
direct into a trunk over its own exhaust trunk. This upper trunk is connected to
the inlet doors of the dust collector. The said dust collector has the form of a box,
one side thereof being connected to the said trunk from the fan. The frame of the
opposite side being provided with flannel or filtering material, the said flannel
or filtering material is suspended and fastened at alternate points to the said frame
and shaking levers, and preferably arranged in a zig-zag shape, forming pockets.
The communication of
These pockets are kept porous in the following manner:
the fan to a portion of these pockets is closed by the shutting of a valve actuated
by any suitable means, the pockets thus disconnected from the influence of the fan
are then forced inside out, by the shaking levers actuated by a cam lever and pawl
and then quickly brought back to their working positions, by the levers and balance
weights, forming a part of the shaking motion. The door being closed causes &
strong vacuum to be produced on the dust laden side of the pockets when they are
falling quickly back, thereby drawing air through the filtering material in the
opposite direction to that which the fan has been blowing which tends to remove
the collected dust in the pores of and on the flannel and assisted by the shaking
causes the dust to fall into a hopper provided with archimedian screws or other
suitable means which delivers the same to one or more exits suitably arranged.
Dated this thirty-first day of January 1884.

page_text: I RALPH HOWARTH of 24 Manchester Road Rochdale in the County of Lancaster
Corn Miller do hereby declare the nature of my invention for "IMPROVEMENTS
IN MIDDLINGS PURIFIER AND DUST COLLECTOR COMBINED," 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 the construction of a middlings purifier and a dust
collector combined in one machine such dust collector having its filtering materials
BO arranged as to form pockets, which pockets by a suitable mechanism are caused
to be shaken and turned inside out, that is to say expanded in a horizontal direction
from one side of the frame to which they are attached through to the other in such
a manner as to cause at certain intervals a strong vacuum on the dust laden side of
the filtering material. The advantages I gain hereby, are firstly a better means of
examining the work being done, by the purifier, secondly, the keeping of each
purifiers' produce separate. thirdly lessening the risk of fire and in most cases
causing a saving of space and reduction of cost. And in order that my Invention
may be better understood I have caused to be appended hereunto one sheet of
drawings marked with letters of reference corresponding letters indicating like parts
in the various figures. Fig 1 is an end view of the middlings' purifier and dust
collector combined showing the latter in section. Fig 2 is a side elevation of the
same partly in section. Figs 3 and 4 are detached views showing the shaking and
valve mechanism.
In carrying out my invention I preferably connect or arrange the dust collector
a on the top of a middlings purifier b (but in some cases it may be more convenient
to connect the same either to the side or end thereof) and set the purifier fan o 80
that it blows direct into a trunk e over its own exhaust trunk f. This upper trunk
is connected and fixed around the inlet doors g of the dust collector a. The said
dust collector has the form of a box one side. h thereof being connected to the
trunke and the latter to the fan c. The frame i of the opposite side being
provided with flannel or other filtering material which is suspended and fastened
at alternate points to the frame i and to shaking levers and preferably arranged
in a zig-zag shape forming pockets m. These pockets are kept porous in the
following manner; the communication of the fan c to a set or portion of the
pockets m is closed by the shutting of a valve g actuated by a cam o rod o¹ and
lever o. The said cam is fixed on the shaft p and carried by the brackets q. The
pockets thus disconnected from the influence of the fan c are then forced inside out,
that is to say expanded in a horizontal direction from one side of the frame to
which they are attached through to the other side by shaking levers actuated by
a cam lever t and pawl u and then quickly brought back to their working positions
by their weighted levers v forming part of the shaking motion. The said weighted
levers are fixed on the shaft u¹ carried by the bracket 9 and are brought into
action by the powl u and cam lever t. The door or valve g being then closed causes
a strong vacuum to be produced on the dust laden side of the pockets m when they
are falling quickly back thereby drawing air through the filtering material or
pockets m in the opposite direction to that which the fan c, has been blowing which
tends to remove the collected dust in the pores of and on the flannel or pockets m,
and assisted by the shaking causes the dust to fall into the hopper w, provided with
an. archi-median screw y or other suitable means which delivers the same to one or
more exits suitably arranged. Motion is transmitted to the shaft p and to the
archi-median screw y from any suitable part of the driving gear of the purifier and.
the dust collected by means of the shoot z.
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page_text: Having now described and ascertained the nature of my said invention and
in what manner the same is to be performed I would have it to be understood
that I claim.
The particular construction of dust collector as described and illustrated in the
annexed drawing in combination with a purifier so as to form one machine, for the
purpose specified.
Pro RALPH HOWARTH,
Bosshardt & Grant,