Abstract: A deflocculating mechanism for use in a paper making machine includes a support member such as a forming board or a foil blade for location beneath a forming fabric belt. The support member has an upper surface defining at least one groove that runs in a cross-machine direction, the groove being provided with retention device for holding an insert in a sliding engagement in the groove to induce micro-turbulence in pulp stock being carried by the forming fabric belt. A pressure pulse commences in the pulp stock from a single source at one side of the forming fabric as it passes over the leading edge of the insert and then travels across the fabric along the line of the insert as a single wave. This produces a more controlled agitation and deflocculation of the pulp stock.

Abstract: An abrasion resistant material is combined with a flow promoting material to provide a conveyance that is flow promoting and wear resistant. Holes formed in a UHMW conveyance allow a ceramic overlay to bond to itself creating a mechanical bond with the UHMW. In a first embodiment, a ceramic composite overlay is form fit to UHMW mixing paddle. The paddle has a tongue with holes therethrough. The ceramic overlay fills the holes creating a mechanical bond between the paddle and the ceramic composite. In another embodiment, a ceramic overlay is bonded to a steel insert received in a channel formed in the distal end of a mixing paddle.

Abstract: An adaptor for power transmission in a pulley and shaft. Two adaptor portions are disposed on opposite sides of the pulley and drawn axially together to capture the pulley therebetween. At least one of the adaptor portions is attached to a quick disconnect bushing on the shaft. A connecting member is tightened to draw the adaptor portions and the bushing together. Preferably, the bushing is tapered and the adaptor portions are correspondingly tapered, providing a radially directed force. The adaptor portions are particularly suited for use with a pulley that is substantially formed of plastic.

Abstract: A floating chain tensioner includes a pair of opposing sprockets with at least one sprocket in slidable relation relative to the other. A pair of elastomer tensioning bands urges the slide-mounted sprocket towards the other sprocket. The floating chain tensioner captures a drive chain between the sprockets to establish tension therein. The tensioning sprockets enjoy some freedom of movement relative to one another while maintaining tension against the drive chain during operation of an associated chain-driven mechanism.