Improvements in Apparatus for Sifting, Sorting, and Sizing Materials.
Year: 1893

page_text: Date of Application, 12th Jan., 1893
Complete Specification Left, 12th Oct., 1893-Accepted, 18th Nov., 1893
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Sifting, Sorting, and Sizing
Materials.
I ARTHUR MAURICE ROBINSON of Railway Works, Rochdale in the County
of Lancaster, Engineer &c., do hereby declare the nature of this invention to be
as follows:-
The object is to provide apparatus for sifting, sorting, and sizing, whereby an
increased quantity of material such as broken grain, semolina, meal, or mixture
thereof, sawdust, small coal, and other materials may be treated in a given space.
Apparatus under my invention has two or more sieve frames formed in steps or
grades. Each frame is suspended freely and adjustably at one end, and rests at the
other end on a knocker having by preference rotary motion imparted thereto.
Two or more of such frames are arranged in series so that the material passing
through the sieves of one frame falls on the sieves of the frame beneath. One or
more of such series of sieve frames are combined with another frame or a series of
sieve frames so that the material passing through the lowest sieve of the series
pass onto the sieves of the next frame or series of frames. Spouts are provided
for taking off the tailings from each frame, and the material passing through the
sieves of the last frame. Any suitable feed apparatus is applied to the first sieve
frame.
Dated the 11th day of January 1893.
Per pro J. T. KING,
J. Johnson,
Agent.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Sifting, Sorting, and Sizing
Materials.
ARTHUR MAURICE ROBINSON of Railway Works, Rochdale in the County
of Lancaster, Engineer, 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 is to provide apparatus for sifting, sorting, and sizing, whereby
an increased quantity of material such as broken grain semolina, meal or
mixtures thereof, sawdust, small coal, and other materials may be treated in a
given space.
Apparatus under my invention has two or more sieve frames formed in steps or
grades. Each frame is suspended freely and adjustably at one end, and rests at the
other end on a knocker having by preference rotary motion imparted thereto.
Two or more of such frames are arranged in series so that the material passing
through the sieves of one frame falls on the sieves of the frame beneath.
One or
more of such series of sieve frames are combined with another frame or a series of
sieve frames so that the material passing through the lowest sieve of the series
passes on to the sieves of the next frame or series of frames. Spouts are provided
for taking off the tailings from each frame and the material passing through the
sieves of the last frame. Any suitable feed apparatus is applied to the first sieve
frame.

page_text: DESCRIPTION OF THE DRAWING.
The accompanying drawing is a longitudinal section of sifting or sorting
apparatus constructed in accordance with my invention a is the main framing.
b, c, are two sieve frames each having, two sieves d; d¹, arranged in steps. The
sieve frames are suspended at one end on the supports e, which are adjustable by
means of the screws and nuts f. At the other end the sieve frame b rests on a
rotary knocker g which imparts a vibratory motion to the said sieve frame. The
other end of the sieve frame e is connected by the link or strap / to the sieve
frame b, and by this means is also operated by the knocker g.
A separate knocker
for the frame e may be used if desired. The sieves d are preferably hinged at i
and are connected by the link and operated by the supplementary knocker g'.
j are directing plates for directing the materials passing through the upper sieves
on to the upper part of the lower sieves so as to obtain a longer travel of the
materials on such lower sieves. Both the directing plates and the supplementary
knocker may be dispensed with if desired. kare spouts for taking away the
tailings from the sieves d'. I spout or hopper for taking away the material passing
through the sieves in the frame c and delivering it to another sieve or series of
sieves or otherwise as desired.
More than two sieve frames b, c, may be arranged in series if desired.
m is a sieve frame having two sieves d, d³, arranged in steps as before described
and suspended at one end on the adjustable support e and at the other end resting
on the knocker g, the sieve d being preferably hinged at i and operated by a
supplementary knocker gl. The material passing through the sieves in the frame c
falls on to the sieves in the frame m and is still further sifted. Two or more sieve
frames m may be used in series, and more than two series of sieve frames may be
combined if desired. k¹, spout for taking away the tailings. spout for taking
away the material passing through the sieves.
The knockers g, g', are operated in any convenient manner and brushes are used
if found necessary for facilitating the discharge of the materials through the spouts
or hoppers . n is a feed hopper of any suitable kind above the first series of sieve
frames.
The action of the apparatus is as follows:-The sieve frames having been put in
motion by the knockers g g¹ the material to be sifted, sorted, or sized, is fed from
the hopper n, on to the sieve d in the frame band travels downwards on to the sieve d'
and thence the tailings pass to the spout k. Any material passing through the
sieves falls on to the directing plates, theuce on to the sieves in the frame c and
travels downwards, the tailings passing away by the spout k and the material
passing through the sieve being collected in the hopper or spout 1 and discharged
on to the sieve d in the frame m whence it travels downwards over the sieve d', the
tailings passing away by the spout and the materials passing through being
discharged through the spout P.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
Apparatus for sifting, sorting, or sizing materials constructed substantially as
described for the purpose set forth.
1000
Per pro J. T. KING,
W. B. Johnson,
Agent.