Abstract: A door arrestor which can be fitted to the lintel of a door frame. The arrestor has a body part which is secured to the lintel and a plunger part which projects from the body part and can move into the body part when struck by the closing door. For a door shutting rapidly the plunger is arrested after completing only a part of its movement and hence the door is arrested before it closes. For a door shutting slowly the plunger is free to complete its whole movement and hence the door is allowed to close. The plunger moves against the action of a spring so that when the door is re-opened the plunger projects again from the body part. The plunger carries a headless loose pin movable in a slot in the plunger and in slots in the body part. With a rapid shutting door the pin is trapped before it completes a full movement and this trapping arrests the plunger. With a slow shutting door the pin has time to fall under gravity to escape being trapped and hence is freed to complete a full movement in its slots.

Abstract: A corner protector, such as for protecting the corners of plate or board-like articles, is made as a single moulding of plastics material and comprises top and bottom triangular planar parts, to slide over respective top and bottom parallel faces of the board, and wall parts; edges of all said parts defining a mouth to allow the protector to be applied to a corner of the board, the wall parts including resilient means to allow the top and bottom planar parts to move apart elastically. The resilient means may comprise springs of folded strand form lying in the plane of the wall parts. Preferably, the corner edge of the protector which abuts the corner edge of the board is thickened and rounded by a protuberance of cylindrical form.