Abstract: A sampling machine for moving a sampling scoop through bidirectional full rotations which are effective to remove multiple sample volumes from a moving conveyor. The sampling scoop has a home position which is maintained by the its drive without requiring a separate brake. A programmable control provides a full range of multiple sampling cycles at high sampling rates. The sampling scoop cavities are comprised of three straight flat surfaces including a pusher surface which is substantially vertical as the sample volume is pushed off an edge of the moving conveyor.

Abstract: An arrester for use under oil in an electrical apparatus, the arrester comprising a first contact assembly, a plurality of valve blocks, a second contact assembly, and a conductive cement serially electrically connecting the first contact assembly, each of the plurality of valve blocks, and the second contact assembly. The arrester also includes a thin insulative inert to oil coating completely covering the plurality of valve blocks, the coating and the cement permitting electrical separation of the valve blocks in the event of electrical destruction of the valve blocks.