Improvements in Machinery for Grading and Sifting Grain and other Materials or Substances.
Year: 1895

page_text: Date of Application, 16th Oct., 1895
Complete Specification Left, 11th July, 1896-Accepted, 15th Aug., 1896
PROVISIONAL SPECIFICATION.
Improvements in Machinery for Grading and Sifting Grain and
other Materials or Substances.
1, JOSEPH BARRON, of Whitehall Road, Leeds, in the County of York,
Corn Mill Engineer, do hereby declare the nature of this invention to be as
follows:-
The object of iny invention is to construct machinery, whereby grain and other
similar substances (hereinafter termed grain) may be sifted into various grades
of fineness, and apparatus constructed according to my invention is more steady
and efficient in its action thau machinery hitherto employed.
According to my invention employ three or more sieves which are suspended
by links in a frame one above the other, the said links being cushioned by washers
in the ordinary way. The surfaces of the sieves slope down towards the front of
the machine, and spouts are provided to take off the material which does not pass
through the sieve; and below the sieves guiding slopes are provided for the
purpose of leading the material passing through the sieves to the back of the
Sieves below. Two vertical crank shafts are provided at opposite ends of
the machine, the cranks the said haft being set at equal angles to cach
other, and bearings on the ends of the sieves connect the said sieves to the
cranks. The feuding roller which is of the ordinary kind is actuated through
worm or other gearing with one of the crank shafts, the latter being connected
with any suitable power; and if desired the two crank shafts may be connected
together by bevel or other gearing.
The relative positions of the sieves makes them well balanced and they are
thus caused to work smoothly, whilst the sieves acting as connecting rods between
the two shafts ensure the latter rotating in a regular manner.
When the machine is at work, the grain is fed through a hopper onto the first
sieve, where the largest parts travel down the sieve surface and are removed at
the spout, whilst the remainder of the material passes through and is conveyed by
the guide tray to the sieve below. This operation is repeated on the second
sieve, the "throughs" from the first sieve being graded into two different sizes,
and the above operations are repented according to the number of sieves
cm loyed.
Machines constructed according to my invention, require less power in
proportion to the work performed, than machines where the sieves are fastened
firmily together, as the work is evenly distributed over the entire revolution of the
crank shaft.
Dantalion 1005
BREWER & SON,
London and Leeds, Agents for Applicant.

page_text: Improvements in Machinery for Grading and Sifting Grain and
other Materials or Substances.
1, JOSEPH BARRON, of Whitehall Road, Leeds, in the County of York,
Corn Mill 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 of my invention is to construct machinery, whereby grain and other
similar substances (hereafter termed gram) may be sifted into various grades of
fineness; and apparatus constructed according to my invention is more steady and
efficient in its action than machinery hitherto employed.
In order that my invention may be clearly understood I will proceed to describe
same with reference to the accampanying drawings, in which similar letters refer
to like parts in all the figures,
Figure 1 is a longitudinal section, Figure 2 an end elevation and Figure 3 a
cross section, of a machine constructed according to my invention; and Figure 4 is
a detail view.
SEIL
and
Ac ording to my invention employ three sieves A, B, and C, which are
supple one above the other in a frame D by means of the link E and
cushions E Pis a vertical shaft having cranks F, F, and Fon
equal angles to each other, as seen in the detail view at Figur 4. Gis a second
vertical haft having ranks G, G4, and G³, situated on same at pual angles,
similar to the cranks situated on the shaft F. The sieves A, B, and Care
connected to the cranks on the shafts F and G, by means of brackets 11 which
carry beatings on their outer ends. The relative positions of the sieves A, B
and C, causes them to counterbalance each other, whilst the sieves acting as
connecting rods between the two shafts obviates the necessity of employing
intermediate gearing or balance wheels and ensures the said shafts
rotating in a free and even manner. K is a feed roller which is actuated through
bevel and worm gearing L from the shaft F, and a pulley M is provided on the
shaft F for connecting the machine with any stable power. The feed and
delivery of the sieves may be arranged to suit varying requirements, but by way
of example I have shown each sieve delivering its "throughs" onto the surface of
the sieve below, in which manner the three sieves shown in the drawings are made
to divide the material, received from the feed roller K, into four grades of
fineness. The surfaces of the sieves A, B, and C, slope down to the front of the
machine, and spouts N, N, and N, are provided for taking off the parts which do
not pass through the sieves. Below the sieves guiding trays P, P, and P³, are
provided for the purpose of leading the material passing through the sieves to
the back of the sieves below, R, R', and R, being spouts for effecting the passage
of the material through the trays P, P, and P³,
1
When the machine is at work the rotation of the shaft F causes the
cranks F, and F, to reciprocate the sieves A, B, and C, which latter being
connected to the cranks G, G, and G, act as connecting rods between the two
shafts and G and cause their uniform rotation, and this action being communi-
cated to the sieves themselves they are actuated in a similar manner to hand
sieving. The material to be graded is fed by the roller K onto the first sieve A,
where the largest parts travel down to the spout N, whilst the remainder of the
material passes through the sieve and is conveyed by the tray P to the spout R
which delivers it onto the back of the sieve B. This operation is repeated on the
second sieve B, the " throughs" from the sieve A being graded into two different
sizes, the larger particles being delivered by the spout N', and the smaller passing
down the tray P, and through the spout R. The sieve C effects a third division,

page_text: the larger particles of the throughs from the sieve B being discharged from the
spout N', and the smaller parts falling through the spout R2. It will thus be
seen that the material fed to the machine by the roller K is divided into four
different grades of fineness, the sorted grades being delivered through the
spouts N, N', N2, and R. It will be readily seen that by supplying each sieve
with a separate feed, the said sieves may be used independently of each other,
thus allowing the machine to be used to suit varying requirements.
Machines constructed according to my invention, require much less power in
proportion to the work performed, than machines where the sieves are fastened
firmly together, as the work is evenly distributed over the entire revolution of the
crank shafts.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is :-
1. The employment of three or more sieves connected at their opposite ends to
the cranks of two vertical shafts, the said cranks being set at equal angles to
ench other, substantially as and for the purposes set forth.
2. The combination of the sieves A, B and C, links E, cushions E', shaft F,
cranks F1, F2 and F3, shaft G, cranks G', G' and G³, brackets H, and pulley M,
substantially as and for the purposes set forth.
3. The sieves A, B and C, in combination with the feed roller K, gearing L,
spouts N, N', and N2, trays P, 1" and P³, and spouts R, R' and R3, substantielly
as and for the purposes set forth.
4. The general arrangement, construction, and combination of the various parts
forming my invention for improvements in machinery for grading and sifting
grain and other materials or substances, substantially as and for the purposes set
forth.
יונים
BREWER & SON,
London and Leeds, Agents for the Applicant.
BREWER & SON,
London and Leeds, Agents for the Applicant.