Experiment 02 Reduction Ratio of Jaw Crusher.docx
2.3.2.1. Blake Type Jaw Crusher The Blake crusher was patented by Eli Whitney Blake in 1858. The swing jaw is fixed at the upper position. The Blake type jaw crusher has a fixed feed area and a variable discharge area. A. Double Toggle Blake Crusher In the double toggle jaw crushers, the oscillating motion of the swing jaw is caused by the vertical motion of the pitman.
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