Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 360
^^^^x ,c^,.^^x~^^\x;^^s^^^x^\\v<*^ … 1445. PUG MILL, with spiral worm in a conicalshell, for mixing mortar, concrete, or other material 1446. CONICAL PUG MILL for mixing clays,mortar, concrete, and other material. 1447. CONICAL MIXING BARREL fosmortar, concrete, or other material. 1448. CONCRETE MIXER.—A rectan-gular box of iron…
Mechanical movements
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