Abstract: A screen (i) for use in forming a patterned paper by a wet-laying technique. The screen is of a mesh material (2) that is pervious to water and has formed therein repeats of pattern forming elements 3a–c, 4a–d and 5 which are defined by an area of at least partial blockage of the mesh and which are bounded by mesh that is not blocked to drainage. The pattern forming elements have a maximum are of 100 mm2 that is blocked to drainage. The screen may be used for producing patterned tissue paper from which tea and coffee bags may be produced.

Abstract: A fibrous, porous web material of the non-heat seal tissue having a basis weight of 9-18 gm-2 and comprises a first layer and a second layer juxtaposed thereto wherein the second layer. The first layer comprising vegetable fibers and a second layer comprising hardwood fibers, the second layer has a smaller pore size than the first layer. The paper is useful for producing beverage infusion bags (e.g. teabags) from which there is minimal passage of fine particles from the bags into their packaging.

Abstract: A window fastening system has a toothed drive belt extending around the periphery of a frame of the window to operate fasteners at various points on the frame. An end of the belt is connected to a drive member via a toggle mechanism arranged to draw the belt end and the drive member together and to hold them together.

Abstract: An operating mechanism for an espagnolette fastening arrangement, particularly for a window frame of extruded sections, comprises a casing (21) within which are disposed two sliders (22, 23) and a toothed drive belt (24) entrained around rollers (25), opposite runs of the belt between the rollers engaging rack formations (27, 28) on the sliders. The sliders are connected to espagnolette bars (34, 39) and one of the sliders (23) is moveable by a cranked rod (18) operable by a handle (12). The use of the toothed belt as a means of driving the sliders in opposite directions simultaneously enables the mechanism to be of compact dimensions.

Abstract: A hinge primarily for a roof window with a pivotally opening sash comprises a body to be fixed to the frame of the window, a support member pivoted to the body and arranged to be secured to the sash, a stay member pivoted to the support member spaced from its connection to the body, and constraining mechanism comprising a frictional assembly and positive catch mechanism to hold at least one position of the sash. As the sash is pivoted, the stay member has one end moved in an arc by the support member while its other end is constrained to reciprocation within the body. The catch mechanism may be operable from a remote position on the frame.