The Grinder, Hartman, and Bone Systems
All the parts of the whales except the baleen were processed for oil. Blubber, meat, and bone were boiled down, the oil was drained off, and the residue was blown overboard. The grinder or Kvarner system encompassed the “cooking out” equipment for driving the oil from the meat, intestines, and bone. The grinder or Kvarner systems were constructed with various capacities in mind. They were generally ten, fifteen, and twenty-eight-ton in size. The Ulysses was equipped with twenty-eight ton grinders, but their working volume was estimated at twenty-five tons. The head bones, back bones, and ribs of the whale were processed in the bone pressers. The oil obtained from the bone was of better grade than that taken from the meat but was inferior to that derived from the blubber; for all practical purposes, and for all general conditions, it was considered grade two oil.
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