Jenike & Johanson, Inc.

Thomas Anthony Royal

Jerry R Johanson

David Anthony Craig

A silo for gravity flow storage of bulk particulate solids comprises downwardly converging and downwardly diverging walls. The downwardly converging walls form angles to the vertical that satisfy the conditions for mass flow. The walls impose particle velocity gradients in the horizontal cross sections of the silo, reducing interparticle cohesion, preventing the formation of arches and promoting uniformity of residence time within the silo. The modules may be vertically stacked, and may be clustered to increase capacity and to reduce pressure stress levels where required.

Multi-faceted modular silo for bulk solids

Apparatus for testing abrasive wear on a surface of a sample. Flowable abrasive material is fed from a barrel against the surface. The sample is mounted reciprocally in the direction of feeding of the material, and urged by a force opposing that of the material thereon. The rate of feeding is controlled to maintain a gap between the end of the barrel and the sample so that the material flows continuously through the gap.

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North Andover, MA, United States of America

Thomas Anthony Royal