IMPROVEMENTS IN MACHINERY FOR PULVERIZING ORES, ROCK CONTAINING ORES, AND OTHER HARD SUBSTANCES
Year: 1871

page_text: LETTERS PATENT to William Edward Newton, of the Office for
Patents, 66, Chancery Lane, in the County of Middlesex, Civil
Engineer, for the Invention of "IMPROVEMENTS IN MACHINERY FOR
PULVERIZING ORES, ROCK CONTAINING ORES, AND OTHER HARD SUBSTANCES."
-A communication from abroad by Van Buren Ryerson, of the
City and State of New York, United States of America.
Sealed the 28th July 1871, and dated the 3rd May 1871.
PROVISIONAL SPECIFICATION left by the said William Edward
Newton at the Office of the Commissioners of Patents, with his
Petition, on the 3rd May 1871.
I, WILLIAM EDWARD NEWTON, of the Office for Patents, 66, Chancery
Lane, in the County of Middlesex, Civil Engineer, do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN MACHINERY FOR
PULVERIZING ORES, ROCK CONTAINING ORES, AND OTHER HARD SUBSTANCES," to
be as follows:-
The improved machine consists of two circular cases whose inner
peripheries are cylindrical and sides parallel, and placed, by preference,

page_text: one forward of the other, and connected with each other and to a suitable
bed plate. Each case is made in two parts coming together in a hori-
zontal plane of the axis, and provided with flanges, so that the two
parts can be firmly connected by bolts. Within the rim of each of the
cases is firmly secured an inner rim made in two parts like the case.
These inner rims (there being one for each case) are made of chilled
cast iron so as to resist the abrasion of the material to be operated on.
The cases have each a concentric shaft, extending through and having
their bearings in suitable boxes. The two shafts are driven at high
velocities by belts, one shaft is driven at about one-third greater velocity
than the other. Each shaft carries a wheel, from the periphery of
which project four radial beaters, the edges of which just clear the sides
of the case and the inner periphery of the inner rim. Each wheel is a
disc, and one is located at that side of the case furthest from the
fceding tube, so as to leave ample room for the passage of the ore or
rock. Projecting from one side are four flanches, to the faces of which
are secured plates which arc the beaters. In the other case the disc
wheel is placed in the middle of the case so as to leave a space on each
side for the passage of the partially broken ore or rock or other
substance which enters into the case on both sides from the other case.
The projections or flanches on this wheel (to which the beaters are
bolted) project on cach side of the wheel.
The first case is provided with a feeding spout which communi-
cates with the insido at a short distance from the shaft, and the lumps
of ore or rock to be operated upon are fed in through this tube.
The inside of the case near the inner periphery communicates with the
inside of the other case near the shaft by means of two pipes, one on
each side. The apertures leading into these pipes must be near the top.
of the case, and the pipes curved upward, so that the particles of
partially broken ore or rock may be carried into the pipes by momentum,
as well as by the pressure of the air induced by the rotation of the
beaters.
The second case is provided near the inner periphery with two dis-
charge pipes, one on each side. The apertures for the discharges must
be made through the sides of the case, and they must be curved upward,
so that the discharge shall be effected only by the pressure of the air,
thus preventing any escape of the material before being thoroughly
pulverized.

page_text: The material is reduced in the first case by the beaters, and when
partially reduced is gradually carried out by centrifugal force and the
pressure of the air, and conducted into the second case.
When the material (partially reduced) enters the second case it is
forced toward and against the inner periphery of the case, and there
reduced to a fine powder, which is forced out through the discharge pipes
by the pressure of the air.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Edward Newton in the Great Seal Patent
Office on the 3rd November 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
EDWARD NEWTON, of the Office for Patents, 66, Chancery Lane, in the
County of Middlesex, Civil Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Third day of May, in the year
of our Lord One thousand eight hundred and seventy-one, in the
thirty-fourth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said William Edward Newton,
Her special licence that I, the said William Edward Newton, my
éxecutors, administrators, and assigns, or such others as I, the said
William Edward Newton, my executors, administrators, and assigns,
should at any time agree with, and no others, from time to time and
at all times thereafter during the term therein expressed, should and
lawfully might make, use, exercise, and vend, within the United King-
dom of Great Britain and Ireland, the Channel Islands, and Isle of Man,
an Invention for "IMPROVEMENTS IN MACHINERY FOR PULVERIZING ORES,
ROCK CONTAINING ORES, AND OTHER HARD SUBSTANCES," being a communica-
tion to me from abroad by Van Buren Ryerson, of the City and State
of New York, United States of America, upon the condition (amongst
others) that I, the said William Edward Newton, my executors or
administrators, by an instrument in writing under my, or their, or one

page_text: of their hands and seals, should particularly describe and ascertain the
nature of the said Invention, and in what manner the same was to be
performed, and cause the same to be filed in the Great Seal Patent
Office within six calendar months next and immediately after the date
of the said Letters Patent.
NOW KNOW YE, that I, the said William Edward Newton, do
hereby declare the nature of the said Invention, and in what manner
the same is to be performed, to be particularly described and ascertained
in and by the following statement, reference being had to the Drawings
hereunto annexed, and to the letters and figures marked thereon (that is
to say)
The improved machinery for pulverizing ores, rock containing ores,
and other hard substances, and which forms the subject of the present
Invention, is shewn in the accompanying Drawings, in which Fig. 1 is a
side elevation of the machine; Fig. 2 is a top or plan view thereof;
Fig. 3 is an elevation of the side of the machine opposite to the one
represented in Fig. 1; Fig. 4 is an end clevation of the machine; Fig. 5,
a longitudinal section taken in the vertical plane of the line X, x, of
Fig. 2; Fig. 6 is another longitudinal section taken in the horizontal
plane of the line A, a, of Fig. 5; Fig. 7 is an enlarged view of one of
the beaters; and Fig. 8 is a section of the same on the same scale taken
in the vertical plane of the line B, b, of Fig. 6.
A. and A¹ represent two circular cases whose inner peripheries are
cylindrical and their sides parallel. These cases are by preference
placed one forward of the other, and are firmly connected with each
other and to a suitable bed plate. Each case is made in two parts,
which are brought together in a horizontal plane of the axis and pro-
vided with flanches a, a, so that the two parts can be firmly connected
by bolts b. Within the rim c of cach of the cases is firmly secured an
inner rim & made in two parts like the case. These inner rims (there
being one for each case) are by preference made of chilled cast iron, the
better to resist the abrasion of the material to be operated on, and this
inner rim should be secured to the outer case by means of screws, so
that it can be taken out and renewed when worn. The cases have each
a concentric shaft C extending through and having their bearings in
suitable boxes f, f, mounted on standards g, g, and the two shafts are
provided with pulleys h, h¹, to receive belts from some suitable motor,
so as to drive them at high velocities, preferring to drive the shaft C¹ at

page_text: about one third greater velocity than the first one C. Each shaft carries
a wheel D, D, from the periphery of which project four radial beaters i,
the edges of which just clear the sides of the case and the inner
periphery of the inner rim d. Each wheel D is a disc located in the
middle of its case A or A¹, and on the periphery of this disc are four
projections j, to the faces of which are secured (by bolts k) plates i,
which are the beaters. The projections j to which the beaters i are
bolted project on each side of the wheel D, and the plates i or faces of
the beaters are by preference made of chilled cast iron. The case Ạ is
provided with a feeding spout 1, which communicates with the inside of
the case at a short distance from the shaft, and the lumps of ore or rock
to be operated upon are fed in through this tube, which for convenience
may be surmounted by a suitable hopper, and the inside of the case A,
near the inner periphery, communicates with the inside of the other
case A¹ near the shaft by means of two pipes m, m, one on each side.
The apertures leading into these pipes must be near the top of the case A,
and the pipes should be curved upward, so that the particles of partially
broken ore or rock may be carried into the pipes by momentum, as well
as by the pressure of the air induced by the rotation of the beaters.
The case A¹ is provided near the inner periphery with two discharge
pipes n, n, one on cach side, and the apertures for the discharges must
be made through the sides of the case at or about the level of the axis of
the shaft, and they must be curved upward, as represented in the
Drawings, so that some portion of their length shall be about on a level
with the upper part of the case, so that the discharge shall be effected
only by the pressure of the air, so as to prevent any escape of the
material before being thoroughly pulverized. The material is reduced
in the first case A by the beaters, and when partially reduced is
gradually carried toward and out through the two pipes m, m, by centri-
fugal force, and the pressure of the air induced by centrifugal force
aided by the exhaust induced near the shaft in the case A¹ by the
rotation of the beaters within the case A', and when the material so
forced toward and against the
partially reduced enters the case A¹ it is
inner periphery of the case, and is there reduced to a fine powder, which
is forced out through the discharge pipes by the pressure of the air. If
the material to be reduced should be very refractory a third case con-
structed like A' with shaft, wheel, and beaters may be placed beyond the
case A¹, and connected with it by pipes in every respect as A¹ is
combined with the case A. And although for the reduction of many

page_text: substances the inner periphery of the inner rim d of the cases and the
faces of the beaters may be made smooth, it is preferable to have them
fluted as represented.
For the convenience of repairs the sides of the cases are provided with
man-holes and covers o, Figures 1 and 3.
Having now described the. Invention which has been communicated
to me by my foreign correspondent, and having explained the manner
of carrying the same into effect, I claim as the Invention secured to me
by Letters Patent as aforesaid,-
-
First. The combination of two or more cases with rotating beaters by
means of connecting pipes from or near the centre of the first and
delivering to the second between the centre and the periphery, as and
for the purpose described.
Second. The arrangement of the beater wheels in combination with
the arrangement of the feeding tube 1 and the two pipes m, m, as and for
the purposes herein set forth.
Third. Making the faces of the beaters each of a separate plate
secured by a bolt or equivalent means to projections on the rotating
discs as described, so that they can be readily replaced when worn.
Fourth. I also claim making the fluted inner periphery of the cases
in combination with the fluted surface of the beaters, substantially as
described.
In witness whereof, I, the said William Edward Newton, have
hereunto set my hand and seal, the First day of November, in
the year of our Lord One thousand eight hundred and seventy-