Century Dictionary and Cyclopedia
- n. A machine for blending, disintegrating, and cleaning old and new foundry-sand: essentially a centrifugal screening-machine. A horizontal disk armed with pins projecting upward is inclosed in a casing and rotated at high speed. The sand, old cores, etc., are fed at the top of the casing, and, falling on the disk, are rapidly cleaned and mixed together. Its capacity is five tons of sand an hour. Another type, which has vertical disks, is called a disintegrator. Still another type employs paddles on a horizontal shaft revolving in a horizontal box or cylinder. It is sometimes called a dry-mixer.
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