Abstract: Cloth retention apparatus for retaining the edges of a filter cloth comprises an edge strip having which can engage with a channel in a frame member, and be retained therein by a wedging member. The wedging member may be separate or attached to the bead, or incorporated therein.

Abstract: Cloth retention apparatus for retaining the edges of a filter cloth comprises an edge strip having which can engage with a channel in a frame member, and be retained therein by a wedging member. The wedging member may be separate or attached to the bead, or incorporated therein.

Abstract: Cloth retention apparatus for retaining the edges of a filter cloth comprises an edge strip having a bead, which can engage with a channel in a frame member, and be retained therein by a wedging member. The wedging member may be separate or attached to the bead, or incorporated therein. The wedging member may be a spring member.

Abstract: A filter element comprises a top frame member, a bottom frame member and a pleated filter assembly received in respective channel sectioned formers comprised by said top and bottom frame members. The formers are integrally bonded with a polyurethane resin core formed in the formers. A mold may include a core member or projections which maintain air passages during molding, and serve to locate the pleats of the filter element in relation to the air passages.

Abstract: A scavenging filter includes a volume containing activated beads or fiber particles of a scavenging material housed in a removable housing in a cartridge filter body having an axial inlet extending to a space below a permeable false bottom, the fluid permeating upwards through the material, and cleaned liquor leaving via an annular space surrounding the chamber.

Abstract: A clipper seam for joining the ends of a belt, are connected by interdigitated staples which are looped about a pintle and provide barbs on their remote ends to penetrate into the material of the belt. Each end is covered by an edge strip of vinyl by radio frequency welding, and a flap is attached to one end on the low pressure side of the belt by a portion, and folded over to cover the seam on the low pressure side by means of a flap which extends beyond the seam area of the other end. A central area to each side of the seam is impregnated with polyurethane to resist abrasion which tends to concentrate in this area.

Abstract: A fluidised bed filter comprises a drying pan, and a filter assembly having a membrane over the pan, and a plurality of openings in the membrane. A filter bag is secured to each aperture by means of a clamping ring attached to the rim of the respective aperture, and cooperating with a clamping band within the cuff of the bag. The material of the bag is clamped between the ring and the band. The ring is covered in a cloth strip, which is folded over to produce a flap, which is stitched between the layers of a double fabric forming the membrane. The band is retained in a tunnel formed by a fold in a double fabric forming the filter bag by stitching.

Abstract: A filter element, consisting of two pleated filter cloths has side frame members or strips and top and bottom frame members. The top and bottom edges of the cloths are encapsulated in the frame members, and the side edges of the filter cloths are clamped by the side frame members. This may be done by molding the frame members onto the cloth side edges, or by providing a slot in a tubular side frame member within which the side edges are held against the inner face of the slotted wall of the tube by a clamping member, such as a U-shaped strip, or by an indented part of the opposed wall.

Abstract: A filter element, consisting of two pleated filter cloths has side frame members or strips and top and bottom frame members. The top and bottom edges of the cloths are encapsulated in the frame members, and the side edges of the filter cloths are clamped by the side frame members. This may be done by molding the frame members onto the cloth side edges, or by providing a slot in a tubular side frame member within which the side edges are held against the inner face of the slotted wall of the tube by a clamping member, such as a U-shaped strip, or by an indented part of the opposed wall.

Abstract: Cloth retention apparatus for retaining the edges of a filter cloth comprises an edge strip having a bead, which can engage with a channel in a frame member, and be retained therein by a wedging member. The wedging member may be separate or attached to the bead, or incorporated therein. The wedging member may be a spring member.