Abstract: A horizontal flow water treatment method and wetland biofilter system with improved flow control via a tubular apparatus and further comprising a chamber with impermeable outer walls spaced away from permeable interior walls of a media filtration bed such that a catch basin is formed between the outer walls and the interior walls. The catch basin creates an open area around the perimeter of the interior walls for influent water to fill within the open area on all sides before penetrating the filtration media, providing a large surface area for influent water to interact with the media filtration bed. The influent water enters the catch basin in a horizontal flow path to provide for pre-settling of particulates before making contact with the filtration media. The biofilter design increases the available surface area of the media filtration bed by up to four times for a given volume of water, and thereby minimizes the loading or infiltration rate on the media filtration bed.

Abstract: A self-contained bearing unit rotatably supports a tool spindle in a bore of a machine tool housing wall. The unit employs an angular-contact ball bearing and the outer race is displaced axially to alter the pre-loading by supplying pressure fluid to a chamber containing a resiliently deformable seal or an annular bellows device.

Abstract: In a sifting machine having a driven vibratory screen assembly comprising a so-called sifting basket of which a screen forms the base, the screen is releasably located by a plurality of spaced bars which extend across the screen and project at their ends through side walls of the basket. The projecting end portions of the bars are bolted to external supports on the side walls, and the bars carry spring-loaded plungers which press the frame of the screen against internal ledges on the side walls.