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An impact crusher includes a center feed disk. The center feed
disk includes a peripheral edge portion, a first face, an opposing,
second face, a central bore extending through the first and second
faces, and first and second countersunk pockets provided about the
central bore in the first and second faces respectively. With this
arrangement, a fastener having a shaft portion and a head portion
can be inserted through the central bore to secure the center feed
disk to a drive mechanism, with the head portion residing in the
countersunk pocket. With this arrangement, once the first face portion
becomes worn, the center feed disk can be removed, inverted and
re-mounted such that the second face portion is exposed.
A pill crusher pouch, dimensioned to be received between a platen
and anvil of a pill crusher wherein the anvil is integrally fixed
to a base and wherein the platen is coupled to said base through
a moveable handle, is constructed a seamless tube of flexible material
having an open top and a closed bottom, wherein the closed bottom
is formed a cup like seal that provides the pouch with a comerless
interior that facilitates easy pouring of pulverized material from
the interior of the pouch.
It has been said that the wheel is the greatest invention of all
time; when horses or oxen pulled wagons, dirt roads or no roads
sufficed, but the wheels of modern transportation require paved
roads for cars and trucks, concrete air strips for airplanes, ballast
for railroads, concrete for dams, buildings, and many other things.
Rock is the material that answers all these needs, but rock must
be crushed to usable sizes. Big boulders or quarried rock are crushed
by primary stage jaw or very large gyratory crushers that reduces
the rock to sizes that second stage crushers can accept, and if
the rock needs to be very small a third stage is used. Cone crushers
are the crushers of choice for second and often for third stage
crushing which is the type crusher of this patent application.
The invention relates to a multi-roller crusher for the comminuting
of mineral mill-feed, whereby the crushing roll are provided with
crushing teeth, extending in the circumferential and longitudinal
axial directions. Viewed in plan, the crushing teeth are arranged
on each crushing roller such that several serial crushing teeth
groups are formed behind each other, the imagined connection lines
of which run successively at an inclined angle to the plan (1',2')
of each crushing roller outer edge in the direction of the crushing
roller centre.
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