ht, and secured belt of duck covered with rubber, which runs horizon- to the post by a nut, while upon the opposing face of tally beneath the mixing rolls, occupying the place the post is a rack having a central longitudinal aper- usually filled by the " compound box." The upper ture and aligning… … include that also, as shown in the illustration. GRIFFIN & MITCHELL'S WIBE FENCE. Fig. 2.-THE AUTOMATIC RUBBER MIXER, ) 1888 SCIENTIFIC AMERICAN, INC.
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