Improvements in Crushers for Ore and other Substances.
Year: 1892

page_text: Date of Application. 4th Apr., 1892-Accepted, 7th May, 1892
COMPLETE SPECIFICATION.
Improvements in Crushers for Ore and other Substances.
CHARLES GUSTAVUS THEODORE NEUMANN, of 15 St. Paul's Road, Bradford,
England, Merchant, do hereby declare the nature of this invention and in what
hanner the same is to be performed, to be particularly described and ascertained
a and by the following statement :-
My invention relates to an improvement in grinding or crushing mills, in which
n inner and outer cone are caused to simultaneously rotate to reduce the material
ed between their faces.
A practical embodiment of the invention is represented in the accompanying
drawings, in which
Fig. 1 is a view of the mill in side elevation.
Fig. 2 is a top plan view.
Fig. 3 is a transverse vertical section.
Fig. 4 is a sectional view, in detail, of the top cone, and
Fig. 5 is a view, in detail, of the inner cone.
The frame of the mill is represented by A. A central driving shaft
is secured
at its lower end within the hub d of a spur wheel D, the lower end of the said
hub d being stepped in a seat a in the base of the frame A, and is steadied at its
upper end by means of a yoke C, in which it has a free rotary movement. The
lower end of the shaft B, where it enters within the hub d, is provided with a
groove bextending longitudinally along the shaft, and a set screw b¹ seated in the
wall of the hub d extends within the groove b in the shaft, so as to cause the shaft
to rotate with the wheel D, and at the same time permit the shaft to be raised and
lowered independently of the wheel D.
The inner cone E is fixed to rotate with the shaft B, and tapers from its base
upwardly toward the shaft. Its exterior surface is provided with a series of
diagonal riffles, or grinding edges e, and for a space below the riffle surface the cone
is provided with a smooth surface é¹.
The exterior cone or grinding shell F is provided with a series of riffles or
grinding edges f extending obliquely along its inner surface, and slanting in the
Below said series of riffles, the
opposite direction from that upon the inner cone.
said outer cone is provided with a smooth interior surface f¹, corresponding to
the smooth surface el at the base of the inner cone E. The outer cone F is pro-
vided with an annular recess f adapted to receive an annular ring a¹ on the main
frame, the latter forming a bearing, and the base of the recess f' forming a journal
for the rotary movement of the outer cone.
The outer cone is fixed to a spur wheel G, corresponding in size to the spur
wheel D fixed to rotate with the shaft and inner cone, and a master or drive
wheel H is fixed upon a shaft h carrying a drive pulley ', the drive wheel H being
in position to intermesh simultaneously with the two spur wheels D and G, and
0 thereby cause them and the cones fixed thereto to simultaneously rotate in opposite
directions.
Spouts I for conducting away the ground or crushed material, extend in a
downwardly slanting direction from the opposite sides of the inner cone, and the
space between said spouts I and the outer cone F is sealed by means of an annular
5 cup K, for containing a liquid, and into which a downwardly extending flange k, on
the outer cone F, projects. A petticoat L, outwardly flaring, and secured to the
base of the cone E, directs the crushed or ground material from the face of the
cone E outwardly into the discharge spouts 1.
The yoke C is supported at its opposite ends by nuts M seated on screw
50 threaded standards N fixed to the main frame. The nuts M have fixed to rotate

page_text: therewith, worm wheels m, with which worms o on a cross shaft O engage, and as the
shaft is rotated, the nuts will be simultaneously turned upon the screw-threaded
standards N, and the yoke C will thereby be elevated or depressed to adjust the
shaft B and the inner cone E carried thereby, toward and away from the surface
of the outer cone.
The shaft O is supported in bearings c fixed to the yoke C, and is conveniently
provided with a hand wheel o' for operating it.
This arrangement for raising and lowering the shaft B and the inner cone,
serves to hold the shaft centred with great accuracy under the grinding strain to
which the cones
are subjected, and at the same time serves as a means for
accurately adjusting the inner cone toward the outer, to vary the degree of
fineness to which the material is to be crushed or ground.
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 :-
1. In combination, an exterior cone held against vertical movement, an interior
cone, means for adjusting the interior cone toward and away from the inner surface
of the exterior cone, a wheel for rotating the interior cone, a wheel for rotating the
exterior cone, and a drive wheel for simultaneously operating the two cones in
opposite directions, substantially as set forth.
2. In combination, the exterior cone provided with a riffled surface and a smooth
taper surface at its base, below said riffled surface, the inner cone provided with a
riffled surface, and a smooth exterior surface at its base below the riffled surface,
the taper of the smooth surface at the base of the inner cone corresponding to the
taper of the smooth surface at the base of the outer cone, means for adjusting the
inner cone toward and away from the smooth surface of the outer cone, and means
for rotating the inner cone, substantially as set forth.
3. In combination, the outer cone held against vertical movement, the inner cone,
the shaft to which the inner cone is secured, a rotary wheel, the hub of which is
seated at one end in the supporting frame, and at its opposite end provided with a
socket adapted to receive the end of said shaft, means for securing the shaft in the
hub, so as to permit it to move longitudinally with respect to the hub, but cause it
to rotate with the hub, and means for rotating said wheel, and hence the shaft and
inner cone, substantially as set forth.
4. In combination, the outer cone, the inner rotary cone, the shaft upon which
the inner cone is secured, a yoke in which the upper end of the shaft is seated, the
screw-threaded standards at the opposite ends of the yoke, the nuts for simul-
taneously raising and lowering the ends of the yoke along the standards, the worm
gear for simultaneously operating the ends, and means for rotating the cone-
carrying shaft, substantially as set forth.
5. In combination, the outer grinding surface, the inner grinding surface, a
receptacle for receiving the ground or pulverized material from between the
grinding surfaces, and a liquid seal between said receptacle and the grinding
surfaces, substantially as set forth.
6. In combination, an outer cone, an inner rotary cone, a receptacle below the
cones into which the material is delivered from between the cones, and a liquid seal
between the receptacle and the outer cone, substantially as set forth.
Dated this 4th day of April 1892
NEWTON & SON,
Agents for the Applicant.