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An impact type rock crusher having a rotor comprised of a plurality
of stirrup type hammers adapted to swing through arcs of approximately
180.degree. between bumper blocks about pivot axes as well as rotating
about the main shaft of the rotor. The grate positioned beneath
the rotor through which the crushed material exits may be moved
uniformly radially with regard to the rotor to an alternate grate
position to vary the clearance between the hammers and the top surface
of the grate. The overall design of the system reduces the height
of the apparatus, and the apparatus may be made portable for movement
from one location to another.
This is concerned with a crusher clearing system using a plurality
of hydraulic jacks disposed with relation to the adjustment ring
and main frame of the crusher such that the jacks, as a unit, apply
a generally vertical thrust directly between the upper main frame
flange and the adjustment ring so that uncrushable material may
be removed from the crushing cavity in a stalled or jammed crusher.
The jacks are arranged in pairs and the jacks are selectively energized
so that the adjustment ring will tilt relative the main frame flange.
A securing means for supporting a stationary die plate in a jaw
crusher including the combination of angular cored pockets located
in the vertical side walls of the stationary die plate and a plurality
of lever-like angular wedges which are receivable in the pockets
in such a manner that the stationary die plate can be forced against
a supporting wall. The lever-like wedges are pivotably mounted against
side walls of the jaw crusher and are bolted to the side walls in
such a manner that tightening of the bolts causes the ends of the
wedges which are received in the angular pockets of the die plates
to apply compressive forces against the die plate forcing the die
plate against the supporting wall.
A double-acting can crusher comprising a frame, a shaft rotatably
mounted in the frame, a substantially cylindrical sheath extending
horizontally above the shaft in parallel relation thereto, a pair
of spaced cylindrical crushing blocks mounted at the horizontal
ends of the sheath, a substantially rectangular upper opening extending
along the top portion of the sheath and being sufficiently wide
to permit the passage of uncrushed cans into the sheath, a lower
opening in the sheath extending longitudinally below the upper opening,
the lower opening being sufficiently wide at the ends thereof to
permit the passage of crushed cans therethrough but being sufficiently
narrow in the central or major portion thereof to prevent the passage
of uncrushed cans therethrough, a collar mounted on the shaft for
movement back and forth along the shaft, an endless reverse helical
groove on the shaft, a pin freely received in a hole in the collar
and disposed at right angles to the shaft, an arcuate tongue on
the pin received within the helical groove, a two-sided cylindrical
ram mounted for to and fro horizontal movement within the sheath
towards and away from each of the blocks, the ram being connected
to the collar, a motor for rotating the shaft whereby the collar
will move back and forth along the shaft in response to the rotary
motion thereof, thereby moving the ram alternately towards and away
from each of the blocks, and a hopper mounted on the frame disposed
above the sheath for directing cans to be crushed into the upper
rectangular opening in the sheath.
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