409,752. Roller-and-breast mills. MITCHELL, P., 47, Hamilton Place, Aberdeen. Nov. 7, 1932, No. 31335. [Class 59.] The casing of a roller-and-breast mill for grinding paints, enamels, inks, and other viscous materials is provided with a removable grinding and inlet chamber G1 and with one or more removable grinding and outlet chambers G2, the various chambers being interchangable. Attached to the chamber G1 is an inlet hopper D from which the material is carried on rotation of the roller A, which also reciprocates longitudinally, past a grinding member E1 externally adjustable by a screw F1. The material is subsequently removed from the roller by a spring-pulled pivoted scraper H1 and falls to the sump of the casing B from which it is carried by the roller to the chamber G2 past a grinding member E2 similar to the member E1, and is removed by a spring-pulled pivoted blade H2. An outlet pipe J is fitted on the cover I2 of the chamber G2.
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