Abstract: A shell-and-tube type heat exchanger wherein the tube bundle is supported in end members each comprising a layer of elastomeric material sandwiched between two rigid plates. The elastomeric material is capable of swelling under the action of a swelling agent to make good sealing contact with the shell and tubes.

Abstract: A hose end unit comprises a reinforced hose end portion having at least an inner cylindrical elastomeric liner and a reinforcement layer and an end fitting being of the kind comprising an insert to enter into the end portion of the hose and a ferrule to surround the end portion of the hose. A plurality of radially inward projections are provided on the ferrule and the ferrule is swaged around the insert so that the hose end portion is gripped between the insert and the ferrule by the projections. The extrusion gap, as herein defined, is sufficiently narrow to substantially prevent flow of the elastomeric liner in the axial direction in use. Furthermore, the space between the ferrule and the insert in between two extrusion gaps is completely filled and the elastomer is compressed into cells delimited by the extrusion gap.

Abstract: A lattice portion of elastomeric material comprises a generally rectangular framework for sealing at least one cladding panel in a building construction. The lattice portions have at least one member protruding from each corner of the rectangle and being an extension of a side of the rectangle. The lattice portions are preformed, assembled on a structure of a building and joined together to form a continuous lattice by forming junctions between adjacent lattice portions or between lattice portions and intermediate spacing which may connect the lattice portions. The completed lattice is attached to the building and cladding panels inserted into the lattice.

Abstract: A glazing structure for example for curtain walls for buildings comprises a panel held in position between a structural member and a glazing bead of open channel section and a pair of elastomeric gaskets for making a weathertight seal. The glazing bead is designed to engage the structural member and has side walls which are turned outwardly from one another at their end portions. One end porton of each elastomeric gasket fits between the respective outwardly turned end portions of the glazing bead and the panel and the other end portion fits in the open channel of the glazing bead. In this way the external surface of the structural member and the glazing bead are covered by the elastomeric gasket to provide a maintenance free exterior for a building.

Abstract: The specification discloses an end fitting for a tubular hose which fitting comprises a rigid tubular insert to be inserted within at least one layer of the hose, a ferrule to surround at least a portion of the insert to grip the said layer of the hose between the ferrule and the insert, an annular sealing member of resilient material, for example rubber or soft thermoplastic, having a first annular lip to make a lip seal with an inner wall of the hose and a second annular lip to make a lip seal with an annular surface on the insert and spring means to maintain the lips in initial contact with the hose and the insert until sufficient pressure builds up in the hose to form lip seals between the lips and the hose and the insert.

Abstract: A leaking joint in a pipeline is sealed by locating a separable mould around the joint to form in conjunction with the pipeline a mould chamber enclosing the joint. Sealant is injected into the mould chamber and the volume of the mould chamber is reduced by deforming a flexible wall of the chamber to pressurize the sealant to a pressure above that inside the pipeline until the sealant has solidified around the joint.

Abstract: The specification discloses a method of making a reinforced tube comprising continuously extruding at least one viscous material having reinforcing fibres therein through two concentric sets of discrete passages, producing laminar flow in the passages by causing the material to accelerate on entry into the passages and preventing deceleration thereof within the passages whereby the fibres orientate themselves in the material lengthwise of the passages, and bringing together the extruded material from the respective passages so as to form two layers of material one within the other having fibres lying on helices of opposite hands respectively and simultaneously hauling-off the extruded layers at a regulated rate to control the angle of the helices on which the fibres lie, and allowing said layers to consolidate into a single tube.