Year: 1886

page_text: Date of Application, 2nd Sept., 1886.
Complete Left, 21st May, 1887.
Complete Accepted, 21st June, 1887.
1, OLIVER IMRAY of No. 28 Southampton Buildings, Chancery Lane, in the County
of Middlesex, Fellow of the Institute of Patent Agents, do hereby declare the nature
of this invention to be as follows:-
In consequence of the peculiar movements, both horizontal and vertical, of rotating
and oscillating sieves, it is difficult to connect the inlets and outlets of their casings to
the supply and discharge conduits in such a manner as to admit of sufficient freedom
for movement and at the same time to prevent escape of the meal, flour, powder, dust
or pulverulent material generally, on which the sieve operates. This invention relates
to a construction of the inlet and outlet of a sieve casing and their connections to the
supply and discharge conduits, in such a manner as to admit of free movement of the
sieve, and to prevent escape of dust or fine particles of material. For this purpose,
at the supply opening of the sieve there is made through the casing a hole into which
projects the end of the vertical supply tube, this hole being so much larger than the
tube which enters it that there is free play for the movements of the sieve. On the
supply tube is fitted a flanged sleeve which is free to slide up and down the tube, and
rests by its flange on the upper surface of the casing, the flange being of sufficient size
to cover the hole in the casing in any of its positions. The weight of the sleeve
bearing on the casing, whilst it does not materially interfere with the motion, serves
to prevent escape of pulverulent matter.
In a somewhat similar manner there is provided at the outlet from the sieve casing,
a vertical tube which projects down into an enlarged mouth of the discharge conduit,
and on this tube, which moves with the sieve, is fitted a flange sleeve capable of sliding
up or down the tube and resting by its flange on the upper face of the discharge
conduit, covering in all positions the mouth of the conduit and so preventing escape
of pulverulent matter.
D121
11
1002
ABEL & IMRAY,
28, Southampton Buildings, London, W.C.,
Agents for the Applicant.

page_text: I, OLIVER IMRAY of No. 28 Southampton Buildings Chancery Lane in the County
of Middlesex, Fellow of the Institute of Patent Agents, 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 consequence of the peculiar movements both horizontal and vertical, of rotating
and oscillating sieves, it is difficult to connect the inlets and outlets of their casings to
the supply and discharge conduits in such a manner as to admit of sufficient freedom
for movement and at the same time to prevent escape of the meal, flour, powder, dust
or pulverulent material generally, on which the sieve operates. This invention relates
to a construction of the inlet and outlet of a sieve casing and their connections to the
supply and discharge conduits, in such a manner as to admit of free movement of the
sieve, and to prevent escape of dust or fine particles of material.
For this purpose,
the inlets and outlets of the sieve are arranged as shewn in the accompanying
drawing representing a vertical section of a sieve case. At the supply opening of the
sieve there is made through the casing a hole into which projects the end of the
vertical supply tube A, this hole being so inuch larger than the tube which enters it that
there is free play as indicated at X X for the movements of the sieve. On the supply
tube A is fitted a flanged sleeve CD which is free to slide up and down the tube A
and rests by its flange D on the upper surface B of the sieve casing, the flange D being
of sufficient size to cover the hole in the casing in any of its positions. The weight
of the sleeve CD bearing on the casing B, whilst it does not materially interfere with
the motion, serves to prevent escape of pulverulent matter. In a somewhat similar
manner there is provided at the outlet from the sieve casing, a vertical tube E which
projects down into an enlarged mouth F of the discharge conduit, and on this tube E
which moves with the sieve, is fitted a sleeve capable of sliding up or down the tube E
and resting by the flange D on the upper face of the discharge conduit F, covering
in all positions the mouth of the conduit and so preventing escape of pulverulent
matter. In order to ensure more perfect dust proof connection of the sieve casing
with its inlets and outlets the flanges D of the sleeves or the surfaces on which they
slide may be faced with felt or other such like material.
Having now particularly described and ascertained the nature of this invention and
in what manner the same is to be performed, I declare that what I claim is :-
For rotating or oscillating sieves, constructing the inlets and outlets for the material
acted on, with flanged sleeves capable of sliding longitudinally on the supply and
discharge tubes and of sliding horizontally over enlarged apertures into which those
tubes project, so as to accommodate themselves to the movements of the sieve, while
always closing the apertures against escape of fine particles, substantially as described
and shewn by the drawing.
Daind this t
1000