(57) An anvil (50) for use in a centrifugal impact rock crusher is disclosed. The crusher
includes a cylindrical housing (10) with a vertically disposed central axis. A plurality
of the anvils (50) are supported radially around the interior of the housing (10)
in a band transverse to the central axis, and an impeller (30) is disposed for rotation
concentrically within the housing (10) and is adapted to throw rock to be crushed
against the anvils. Each anvil (50) includes a substantially cylindrical body having
an end (52), and is secured within the housing (10) such that the rock thrown thereagainst
impinges substantially on the end (52). The anvil bodies are selectively rotated about
their cylindrical axes.
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