Double Roll Teethed Roll Crusher
Although its brief period of popularity passed some thirtyodd years since and only a few sets were installed before interest reverted to other types the highspeeddouble roll crusherdeveloped by thomas a edison shortly before the end of the last century warrants a place in any discussionof crushing equipment in 1960 the largest machine of this type the 6 x 7 foot giantrolls
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