Abstract: The invention provides an improved casing material for locating, at door edges a brush-like material for preventing the passage of cold smoke, and an intumescent material which expands to obstruct. A tubular body has a slot for the bristles which project outwardly from a brush-base located inside the casing, and an internal housing for the brush base isolates the slot from an interior portion of the body. A second slot is provided opposite the first slot. The construction of the body is such that the slots can be opened locally so that the brush base can be fitted through the first slot and the intumescent material may be passed, in strip form, through the second slot.

Abstract: Apparatus for cutting web material transversely to form sections has an arrangement for advancing the material a section at a time across a linear cutting edge. A linear guide parallel with the edge carries a circular blade which overlaps the linear cutting edge said blade being reciprocably driven along a linear guide. Each forward, and each reverse, cutting-stroke of the circular blade cuts off the then advanced section. The advancing arrangement is timed to operate between the ends of the forward strokes and the beginnings of the reverse strokes of the circular blade and vice versa. A preliminary advancing arrangement is provided for advancing a measured amount of web material to form slack which is taken-up by advancement of the material across the linear cutting edge.

Abstract: Apparatus for cutting web material transversely to form sections has an arrangement for advancing the material a section at a time across a linear cutting edge. A linear guide parallel with the edge carries a circular blade which overlaps the linear cutting edge said blade being reciprocably driven along a linear guide. Each forward, and each reverse, cutting-stroke of the circular blade cuts off the then advanced section. The advancing arrangement is timed to operate between the ends of the forward strokes and the beginnings of the reverse strokes of the circular blade and vice versa. A preliminary advancing arrangement may be provided for advancing a measured amount of web material to form slack which is taken-up by advancement of the material across the linear cutting edge.