Improvements in Purifiers for Middlings and such like Cereal Products.
Year: 1892

page_text: Date of Application, 23rd May, 1892-Accepted, 16th July, 1892
COMPLETE SPECIFICATION..
Improvements in Purifiers for Middlings and such like Cereal
Products.
I, HENRY SIMON, of No. 20, Mount Street, Manchester, in the County of
Laucaster, Civil Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
My invention relates to purifiers for middlings and such like cereal products, so
constructed and arranged that the air which is forced or drawn through the sieves
of such purifiers is caused to pass through openings and chambers, and has the
direction and speed of its currents, controlled in such manner that the dust and fine
particles suspended in the air are for the most part deposited before the air issues
from the purifier.
For this purpose, I construct and arrange the purifier as I shall describe referring
to the accompanying drawings.
Fig. 1 is a longitudinal section and
Fig. 2 is a transverse section, on the line Z Z of Fig. 1, of the upper part of a
purifier according to my invention;
Figs. 3 and 4 are transverse sections shewing modifications.
Referring first to Figs. 1 and 2, a is the oscillating sieve having close above it
the grid of sloping channels c for collecting deposit from the ascending air currents,
as described in the Specification No. 5155 of 1884. At some distance above these
channels I fix a deffector of triangular section having a horizontal base d and
inwardly sloping sides d' which extends along the whole length of the purifier.
Above it there are outwardly sloping sides k of several chambers g into which the
space above the deflector is divided, but each of the sloping sides & forms only a
partial lateral partition leaving large openings by which air passes into the
chambers g.
From each of these chambers there is a passage, which may be
regulated by a valve, to the channel which leads to the suction of the fan i. The
lateral partitions & do not quite reach the sides d¹ of the deflector but leave narrow
passages e. The air currents which rise from the sieve a, more or less laden with
dust and fine particles, becoming retarded as they expand into the larger space
above the channels c, deposit much of the dust in these channels and also in the
lateral recesses b into which the channels c lead. The air currents becoming still
more retarded as they pass through the large openings into the chambers g deposit.
the rest of the dust on the sloping sides k and d' d' whence it slides through the
narrow passages and descends into the channels c. The bottom d of the deflector
directs the ascending air currents so much to each side that they do not interfere
with the descent of the fine particles from the outlets e*.
As shewn in Fig. 3, the sides k are carried down so as nearly to meet in the
middle of the deflector leaving a narrow passage e' shielded from the ascending
air currents by external sloping cheeks ee, so that the dust slides down to the
channels c. Fig. 4 shews a similar construction with a passage between walls et

page_text: down to a channel c' which oscillating with the sieve conducts the deposited dust to
a delivery shoot at the end of the machine.
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 I make no
claim to a sieve with side deposit or collecting passages nor to a central deflector
with outwardly sloping, sides or a deposit chamber over the silk cloth but what I
claim is :-
1. In a purifier, in combination with the sieve and its appliances for collecting
deposit, a deflector at some distance above the sieve arranged to guide the ascending
air currents through large passages into chambers communicating with the suction
channel of the fan, these chambers having sloping sides leading to narrow passages
at the sides of the deflector for descent of deposited dust, substantially as described
with reference to: Figs. 1 and 2.
2. The modifications substantially as described with reference to Figs. 3 and 4, in
which the sloping sides of the chambers lead to a single narrow opening through
the deflector.
Dated this 23rd day of May 1892.
ABEL & IMRAY,
Agents for the Applicant.