Improvements in Machines or Apparatus Used for Dressing and Cleaning All Kinds of Grain or Seeds, also applicable to Dressing and Separating Ground Materials.
Year: 1896

page_text: Date of Application, 1st Apr., 1896
Complete Specification Left, 30th Dec., 1896--Accepted, 20th Feb., 1897
PROVISIONAL SPECIFICATION
Improvements in Machines or Apparatus Used for Dressing and
Cleaning All Kinds of Grain or Seeds, also applicable to
Dressing and Separating Ground Materials.
We CHARLES EDWARD MUMFORD of St. Andrew's Works, Bury St. Edmunds.
in the County of Suffolk, Engineer, and WILLIAM WALTER WILLIS of
"Duucombe "Burrell Street Ipswich, in the County of Suffolk Miller do hereby
declare the nature of our invention for Improvements in machines or apparatus
used for dressing and cleaning all kinds of grain, or seeds, also applicable to
dressing and separating ground materials, to be as follows:-
This invention relates to a novel application of blast or exhaust air currents and
dust separating and collecting devices to revolving screens (or a combination of
revolving screens and vibrating or rotating sieves or riddles may be used). The
blast or exhaust air currents created by a fan or fans are purified within the
machine and may be discharged free from dust into the room in which the machine
is placed or it may be blown into a reparate chamber, or out into the open as
desired.
But in carrying our invention into effect we prefer to confine the air within the
casing of the machine by using suitable apparatus for separating all dust from
the air, whereby we are enabled to use the air enclosed within the casing of the
machine over and over again.
The modus operandi of the apparatus is as follows. The grain or other substance
to be treated is fed into the uppermost screen (or sieve) which separates all
substances larger than the grain being treated the said separated substances are
passed out of the machine through suitable openings.
The grain that has passed through the screen (or sieve) is conveyed by suitable.
means into a second screen (or sieve) which separates dust and dirt also small
substances smaller than the grain being treated; the grain passing out at the end
of the said second revolving screen (or vibrating or rotating sieve) is subjected to
an upward current or currents of air which separates any remaining dust also chaff
short straws and light or damaged kernels of grain. The materials separated by.
the said air current or currents are deposited into one or more expansion hoppers
according to the size and gravity of the said substances and from which they are.
automatically discharged from time to time through the valves at the lower ends
of the said hoppers provided for that purpose.
The air, (which is according to our present invention either enclosed within the
casing of the machine, or otherwise, but we prefer in carrying our invention into
eflect to enclose it within the casing) is set in motion by a fan or fans, & is purified
while circulating round the interior of the machine by means of dust arresting
devices arranged in the upper or lower (or both) portions of the machine casing
whereby we are enabled to use the air enclosed within the machine over and over
again.
Dated
20th den of March 1806
CHARLES EDWARD MUMFORD,
WILLIAM WALTER WILLIS,
Applicants.

page_text: Improvements in Machines or Apparatus Used for Dressing and
Cleaning All Kinds of Grain or Seeds, also applicable to
Dressing and Separating Ground Materials.
We CHARLES EDWARD MUMFORD of St. Andrew's Works Bury St. Edmunds
in the County of Suffolk, Engineer and WILLIAM WALTER WILLIS of
"Duncombe" Burrell Street Ipswich in the said County of Suffolk Miller do
hereby declare the nature of this invention and in what manner the same is to bo
performed, to be particularly described and ascertained in and by the following
statement:-
This invention relates to a novel application of blast or exhaust air currents and
dust separating and collecting devices to revolving screens (or a combination of
revolving screens and vibrating or rotating sieves or riddles may be used). The
blast or exhaust air currents created by a fan or fans are purified within the
machine and may be discharged free from dust into the room in which the machine
is placed, or it may be blown into a separate chamber, or out into the open as
desired. But in carrying our invention into effect we prefer to confine the air within
the casing of the machine by using suitable apparatus for separating all dust from
the air whereby we are enabled to use the air enclosed within the casing of the
machine over and over again.
The modus operandi of the apparatus is as follows. The grain, or other substance
to be treated is fed into the uppermost screen (or sieve) which separates all
substances larger than the grain being treated the said separated substances are
passed out of the machine through suitable openings. The grain that has passed
through-the-screen (or sieve) is conveyed by suitable means into a second screen
(or sieve) which separates dust and dirt also small substances smaller than the grain
being treated. The grain passing out at the end of the said second revolving screen
(or vibrating or rotating sieve) is subjected to an upward current or currents of
air which separates any remaining dust also chaff, short straws, and light or
damaged kernels of grain. The materials separated by the said air current
or currents are deposited into one or incre expansion hoppers according to the size
and gravity of the said substances and from which they are automatically discharged
from time to time through the valves at the lower ends of the said hoppers provided
for that purpose.
The air (which is according to our present invention either enclosed within the
casing of the machine (or otherwise) but we prefer in carrying our invention into
effect to enclose it within the casing) is set in motion by a fan or fans and is purified
while circulating round the interior of the machine by means of dust arresting
devices arranged in the upper or lower (or both) portions of the machine casing"
whereby we are enabled to use. the air enclosed within the machine over and over
again.
I will now proceed to describe a machine constructed in accordance with our
invention in which we use sieves of the rotary type for separating the large and
small foreign substances such as sticks, straw, string, stones, lumps of earth dirt,
sand, and other such substances from the grain and a revolving reel or screen for
separating round seeds broken and thin kernels, and also for separating the good
grain into two or more sizes. The said reel is clothed with wire or other suitable
material with various sizes of mesh to effect the desired separations. Each size or
grade is conveyed by suitable means into an aspirator and made to pass through
an upward current of air which separates any remaining dust or chaff and light or
unsound kernels of grain, the separated materials are deposited in suitable hoppers
and discharged automatically from the machine through valve trapped outlets."

page_text: Having reference to the drawings A Fig. 1 is the outer framework and casing.
B the rotary sifter C grain inlet C¹ coarse separating sieve C' fine separating sieve
Da trough for discharging large impurities D' trough for discharging dust sand
and so forth D grain spout to feed dressing or grading reel E E collecting
apparatus for reel siftings E transverse worm for discharging fine siftings outside.
machine F section of reel for separating small grain F1 worm conveyor for
discharging small grain to aspirator G small grain aspirator (see Fig. 2) G₁ large-
grain aspirator G* Figs. 1 & 2 depositing hoppers for materials separated by
aspirating air currents. H, H₁ fans for creating air currents Hair trunks leading
to dust collecting chamber. I dust hopper. J dust catchers. K depositing spaces..
L collecting apparatus more fully described in Patent Specification No. 18,292,.
1895. It will be readily understood that by clothing the sieves and reels with
suitable covers the apparatus is equally applicable to dressing and grading ground.
materials or meals.
Having now particularly described and ascertained the nature of our improve-
ments and the manner in which the same are to be performed we declare that what
we claim is:
Claim 1. In machines of the kind described in which revolving reels or screens,.
or a combination of reels or revolving screens with vibrating or rotating sieves are
used for dressing cleaning and grading all kinds of grain or ground materials and
such like substances, the combination with the reels screens or sieves of blast or
exhaust air currents enclosed within the casing (or otherwise) together with the
apparatus for separating dust from air substantially as arranged and illustrated in
the drawings.
Claim 2. In machines such as described in which the sieves or reels are clothed
with various sizes of mesh for separating grain into sizes or grades the applica--
tion of aspirators to one or more of the middle separations in addition to the usual
end aspirators substantially as described.
Claim 3. The combination of the parts in the two preceeding claims in a machine
for cleaning dressing and separating all kinds of grain, or ground materials and
other such substances substantially as described and illustrated in the drawings.
annexed.
Dated this 29th day of December 1896.
CHARLES EDWARD MUMFORD,
WILLIAM WALTER WILLIS,
Applicants.