IMPROVEMENTS IN THE PROCESSES OR GRINDING OR ROLLING DDROCIVA BIDIEVING
Year: 1882

page_text: LETTERS PATENT to William Korth of Belfast in the county of Antrim in
Ireland Millwright and Engineer, for an invention of IMPROVEMENTS IN
THE PROCESSES OR GRINDING OR
ROLLING
DDROCIVA
BIDIEVING
PROVISIONAL SPECIFICATION left by the said William Korth at the Office
of the Commissioners of Patents on the 11th May 1882.
WILLIAM KORTH, of Belfast, in the County of Antrim, in Ireland Millwright
and Engineer, IMPROVEMENTS IN THE PROCESSES OF GRINDING OR ROLLING,
DRESSING, PURIFYING, AND
MACHINERY THEREFOR.
CLEANING GRAIN AND OTHER MATERIALS AND IN
One part of my invention has reference to the Machines comprized in the Letters
Patent lately granted to me (No. 5037 A D. 1881) and consists in the completion
of the process of grinding grain and other materials by what is elsewhere known
as the Half High Grinding or Three Break Roller Mill System that is to say, by
the use in rotation or successively of three of the Machines, or "sets" of rollers
comprized in the Letters Patent above mentioned the adjustable rollers in which
are much heavier and larger than those heretofore employed and have (say) 550
longitudinal flutings or grooves with an inclination of 1 in 20 or thereabouts in
the first set (say) 750 such flutings or grooves in the second set and (say) 950 such
flutings or grooves in the third set.
And by way of improvement upon the Machine comprized in the same Letters
Patent I support the fixed or intermediate roller on balance bearings and as a
better means of discharging the material from the Upper adjustable roller I
dispense with the use of a Worm and substitute for it troughs which receive the
material as it is passed under the upper adjustable roller and being struck and
shaken by means of cams, or notched nuts on a revolving shaft or bar deliver
it into spouts at the side of the frame whereby it is conveyed to the bottom of
the machine

page_text: My improved processes for dressing purifying and cleaning are accomplished by
the use of the following Machines
In order to purify the "middlings" or other granulated material I construct a
Machine consisting of two riddles and dispense with cylinders as now commonly
used. The riddles are placed at the top of the machine supported by Springs and
driven by a shaft and Eccentrics. The upper riddle frees the material from dust.
The lower riddle separates the material into four different degrees of granulation
and delivers it accordingly into separate Chambers from which the refuse or impure
portion is drawn by one central or common Exhauster.
And in order to clean grain and other materials I construct a Machine consisting
of two vertical chambers of which one is of a cylindrical form and stationary as
commonly employed, and the other is conical and moveable. This conical Chamber
revolves within the cylindrical chamber in which it may be raised or lowered by
means of hand screws according to the nature of the material to be cleaned. The
Exhauster is placed on the top of the cylindrical chamber Another machine which I
employ for cleaning and separating grain and other materials consists of two
riddles, one above the other used in lieu of Cylinders. The upper riddle removes
straw and stones, and the lower one separates the Wheat according to size and
removes dirt and impurities.
The riddles are supported by Springs and driven by a shaft and Eccentrics.
The Exhauster is placed below the riddles to draw off refuse or dust.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Korth in the Great Seal Patent Office on the
11th October 1882.
WILLIAM KORTH of Belfast in the County of Antrim in Ireland Millwright and
Engineer "IMPROVEMENTS IN THE PROCESSES OF GRINDING OR ROLLING, DRESSING,
PURIFYING AND CLEANING GRAIN AND OTHER MATERIALS AND IN MACHINERY
THEREFOR
One part of my invention has reference to the employment of the grinding
Machines comprized in the Letters Patent (No. 5037 A.D. 1881) granted to me
under date of the seventeenth day of November one thousand eight hundred and
eighty-one and consists in the completion of the Process of grinding grain and
other materials by what is elsewhere known as the Half High Grinding or Three
Break Roller Mill Systein that is to say by the use in rotation or successively of
Three of the Machines or "Sets" of Rollers comprized in said Letters Patent of
the seventeenth day of November one thousand eight hundred and eighty-one, the
adjustable rollers in which are twenty inches in length and twelve inches in
diameter being much heavier and larger than those heretofore commonly employed
and have (say) five hundred and fifty longitudinal dutings or grooves with an
inclination of one and a half in twenty or thereabouts in the first "Set;" (say)
seven hundred and fifty such flutings or grooves in the second "Set;" and say
nine hundred and fifty such flutings or grooves in the third "Set:" The fixed or
intermediate roller is of the same dimensions and similarly fluted or grooved.
And by way of improvement upon the grinding machine comprised in the same
Letters Patent I support the fixed or intermediate roller on balance bearings or
adjustable pedestals and as a better means of discharging the material from the
upper adjustable roller I dispense with the use of a worm and substitute for it
troughs which receive the material as it is passed through between the upper
adjustable roller and the fixed or intermediate roller and which, being struck and
shaken by means of cams or notched nuts on a revolving shaft or bar, deliver it
into spouts at the sides of the frame whereby it is conveyed to the bottom of the
machine
And in order that the foregoing improvements upon my said grinding machine
may be more fully understood I refer to the sheet of Drawings annexed to the
Final Specification which I caused to be filed in the Great Seal Patent Office on
the sixteenth day of May one thousand eight hundred and eighty-two and parti-
cularly to the figures thereon numbered I and II in both whereof a balance bearing
or adjustable pedestal is shewn at the end of the Shaft carrying the fixed or inter-
mediate roller and marked with the letter a and the trough or pipe through which
the granulated material is delivered at each end of the frame marked with the
letter r and the cam or notched nut at the end of the revolving shaft or bar and
marked with the letters are shown.
My improved Processes for dressing purifying and cleaning grain and other
materials are accomplished by the use of the several machines which I shall next
describe.
In order to purify the "middlings" or other granulated material I construct a
machine consisting of two riddles and I dispense with cylinders as now commonly
used. The riddles are placed at the top of of the machine and supported by springs
and are driven by steam or other power from a pulley on a shaft with eccentrics.
The upper riddle frees the material from dust and passes it into the lower riddle
which separates it into four different degrees of granulation and delivers it accord-
ingly into four separate chambers where the refuse or impure portion is drawn

page_text: from it through a number of exhaust pipes by the aid of one central or common
exhauster or fan which delivers it to the refuse store. The Exhauster or fan is
supported on balance bearings or adjustable pedestals. For the purpose of regu-
lating the amount of draught to be given to the Exhauster or fan I provide an
enclosed moveable partition having ports which can be opened and shut by means
of handles operated from without. The use of more or fewer ports alters the
quantity of draught supplied according to the necessity.
And in order to clean grain and other materials I construct a Machine consisting
of two vertical Chambers or of a hollow chamber containing a roller or disc. The
hollow chamber is of a cylindrical or it may be, of a conical form and stationary,
as commonly employed and the other is conical and moveable. This moveable
chamber, roller or disc revolves on a shaft within the hollow Chamber and may be
raised or lowered in it (according to the nature of the material to be cleaned) by
means of a lever worked on a footstep with the aid of a screw and hand wheel.
The exhauster or fan is placed at the top of the hollow chamber on the same shaft
as the moveable chamber, roller or disc and takes out the refuse, and delivers it into
a side pipe.
The Machine is driven off a pulley on the before mentioned shaft.
Another machine which I employ for cleaning and separating grain and other
materials consists of two riddles one above the other used in lieu of cylinders.
The upper riddle removes straw and stones which fall over the end of the riddle
and the lower one separates the grain according to size and removes dirt and
impurities
The riddles are supported by Springs and driven off a pulley on a shaft with
eccentrics
The Exhauster or fan is placed below the riddles. The large grain is delivered
on the bottom of the Machine through a chamber with which the Exhauster or fan
communicates by a pipe in order to drive off refuse and dirt. The refuse is carried
through a pipe at one side of the Machine and the dirt and impurities are dis-
charged through a pipe at the opposite side. The refuse pipe is provided with a
slide or hinged door which is operated from without by a handle for the purpose
of regulating the draught
And in order that the latter parts of my said invention may be more fully
understood I shall now proceed to refer to the drawings upon the sheet hereunto
annexed.
Fig. I is an elevation of the Purifying Machine and shows the riddles,
chambers and Exhauster and the moveable partition for regulating draught.
Fig. II is an elevation of the Cleaning or Smut Machine and shows the vertical
chambers, lever, footstep and screw and the Exhauster and
Fig. III is an elevation of the cleaning and separating Machine and shows the
riddles, springs, eccentrics and exhauster.
a, and a', are the riddles I substitute for cylinders. b, b, are the springs supporting
them. c, is the eccentric shaft and d, d, are the eccentrics. e, el, e², and e³ are the
chambers for receiving the material according to the degrees of granulation and f
is the Exhauster or fan carried on the balance bearings or adjustable pedestal, f¹.
g, is the moveable partition for regulating the draught by the use of the
handles h, h, which operate on the port doors. k, k, are the Exhaust pipes for
conveying refuse through the Exhauster f, to the Exhaust store. is the hollow
or stationary chamber of the cleaning or smut machine and is the moveable
chamber, roller or disc, shown by dotted lines. m, is the lever; n, the footstep
and o the hand wheel for raising or lowering . p, is the Exhauster or fan and q
the side pipe carrying off the refuse. and are the upper and lower riddle
respectively of my cleaning and separating Machine. 8, 8, are the springs supporting
the riddles. t, is the chamber and t', is the dirt pipe. u, is the Exhauster or fan
communicating with the chamber in order that the refuse may be removed by
means of the pipe, v, which is provided with the slide or hinged door, w, to be
operated by x, the handle outside. y, y, are the Eccentrics for driving the riddles.

page_text: Having now described the nature of the said invention and in what manner the
same is to be performed I would have it to be understood that I do not claim the
Exclusive use of the Process of grinding grain and other materials by what is
elsewhere known as the Half-High Grinding or Three Break Roller Mill system
except where the same is performed by the employment in rotation or successively
of the Machines or "Sets" of Rollers invented by me and comprized in the several
Letters Patent herein before mentioned, nor do I claim the exclusive use of
adjustable rollers or of balance bearings or adjustable pedestals or of troughs
actuated by cars or notched nuts or of riddles supported by springs or of moveable
partitions to regulate draught or of vertical chambers or a hollow chamber con-
taining a moveable chamber, roller or disc or of Exhausters or fans except when
the same are constructed and arranged specially and employed in the manner
herein before described nor do I claim the use of Chambers, spouts, pipes, shafts or
bars, Eccentrics, levers, footsteps, screws with hand wheels, slides or hinged doors
or coverings, springs, handles or pulleys nor of any of the separate mechanic il
parts which form the Compound automatic machines employed by me but I claim
1 The use of three of the Machines or "Sets" of rollers comprised in ny several
Letters Patent hereinbefore mentioned substantially in the manner and for the
purposes hereinbefore described.
2 The use in grinding Machines of a fixed or intermediate roller on balance
bearings or adjustable pedestals substantially in the manner and for the purposes
bereinbefore and in said Letters Patent of Seventeenth November One thousand
eight hundred and eighty one (No 5037) described and shown on the drawings
thereunto annexed.
3 The use in grinding machines of troughs constructed, actuated and employed
substantially in the manner and for the purposes herein before and in said Letters
Patent of Seventeenth November One thousand eight hundred and eighty one
(No 5037) described and shown upon the drawings thereunto annexed
4 The use in purifying Machines of riddles in lieu of cylinders constructed,
supported and employed substantially in the manner and for the purposes herein-
before described and shown on the drawing, Fig. I., hereunto annexed
5 The use in cleaning Machines of an inner moveable conical chamber, roller or
disc constructed, adjusted and employed substantially in the manner and for the
purposes herein before described and shown on the drawing, Fig. II., hereunto
annexed
6. The use in cleaning and separating Machines of riddles in lieu of cylinders
constructed; supported, actuated and employed substantially in the manner and
for the purposes hereinbefore described and shown on the drawing, Fig. III.
hereunto annexed
7 The several combinations and arrangements of parts constituting the com-
pound automatic Purifying, Cleaning and Cleaning and [separating Machines
respectively above mentioned constructed and applied substantially in the manner
and for the purposes hereinbefore described and illustrated by the drawings
hereunto annexed
In Witness whereof I the said William Korth have hereunto set my hand
and seal this ninth day of October in the year of our Lord one thousand
night hundred and eighty twn
WILLIAM KORTH (L.S.)