US264179A
Instead of the fiat fixed jawplate in common use in stone and ore crushers of this class, I use a cylindrioaljaw, as shown at L, which is preferably constructed in sections, L, as in'' died in the drawings, but may consist of a single casting, and may have a smooth crushingsurface, as shown in, or a corrugated crushingsurface, as shown in Fig. 4; or the surface may be furnished ...
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