Year: 1886

page_text: Date of Application, 3rd Apr., 1886.
Complete Left, 16th Dec., 1886.
Complete Accepted, 18th Jan., 1887.
I, GUSTAV DAVERIO, Engineer, residing at Zurich, Switzerland, do hereby declare
the nature of this invention to be as follows:-
The object of my invention consists in cooling the rollers of roller-mills by a current
of air which is so directed as to operate upon a considerable portion of the periphery
of the roll, whereas it is prevented from blowing about the flour which is being
produced by the mill.
For this purpose I place a casing in close contact with the free side or portion of
the roll, and within this casing I arrange parallel to the roll a pipe communicating
with a fan and provided opposite to the face of the roll with a slit or a row of holes,
while the casing has an aperture for the egress of the air.
The said pipe is disposed in such position in the casing that the current of air
issuing from the slit or holes of the same, will be directed against the portion of the
periphery of the roll which, during the rotation of the latter, enters into the casing.
The air will under these conditions be drawn along by the roll and remain longer and
more closely in contact therewith. By means of the casing, which may be tightened
against the roll by strips of felt, the dispersion of flour by the current of air is
prevented.
GUSTAV DAVERIO.
By his Agent, Carl Pieper.

page_text: 1, GUSTAV DAVERIO, Engineer, residing at Zurich, Switzerland, 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:-
The object of my invention consists in cooling the rollers of roller-mills by a current
of air, which is so directed as to operate upon a considerably portion of the periphery
of one of the rolls, whereas it is prevented from blowing about the flour which is being
produced by the mill.
For this purpose I place a casing in close contact with the free side or portion of
the roll to be acted upon, and within this casing I arrange, in proximity to the roll, a
pipe communicating with a fan or other air-forcing device, and provided with a slit
or a row of holes, adapted to direct the current of air entering through the pipe,
against the face of the roll, while the casing has an aperture for the egress of the air.
On the annexed sheet of drawings is shown by Fig. 1 in transverse section and by
Fig. 2 in front view a three-roller mill, to the middle row whereof my refrigerating-
apparatus is applied. The apparatus consists of the casing d having the same length
as the roll and covering a portion of its free side, and of a pipe e arranged inside of
the casing, or cast together therewith, so as to be parallel to the roll, and provided
opposite to the face of the roll with a slit f. Through this pipe and the pipe h con-
nected with the former, air is forced by a fan or a blowing-machine against the roll.
For the egress of the air from the casing, the bottom of the casing being opposite to
the pipe h, is provided with a hole g extending through the contiguous standard a and
its wooden lining.
The pipe e is preferably placed in such position within the casing that the current
of air issuing from the slit or holes of the same, will be directed against the portion of
the periphery of the roll which, during the rotation of the latter, enters into the casing.
Under these conditions the fresh and cool air will be drawn along by the roll and
remain longer and more closely in contact therewith.
By means of the casing d, which may be tightened against the roll by strips of felt k
fixed to its edges, the dispersion of flour by the current of air is prevented.
Having now particularly described and ascertained the nature of the said invention
and in what manner the same is to be performed, I declare that what I claim is :
In a roller-mill, the combination, with a roll b, of a casing d enclosing a portion of
the periphery of the roll and having an aperture 9, and a pipe e connected to a fan or
blowing-machine and provided with a slit or a series of holes f opening out into the
casing d, substantially as and for the purpose described.