Abstract: Valve arrangement in a line with pressure medium used as supply and return line, said valve arrangement being intended for controlling the flow through said line and comprising a valve body with a first and a second valve port which serve, alternately, as input and output, and a valve cone arranged in the valve body which connects in its open position the valve ports with each other, closes these in its closed position and is actuated by a holding force which is greater than the force acting on the pressure medium side of the valve cone and dependent on the medium pressure in the input port.

Abstract: Apparatus for handling elongated objects such as pieces of wood includes at least one elongated flexible member for forming the bottom and sides of an object-handling compartment having a longitudinal dimension and a transverse dimension, the flexible member having a first end and a free end; a coiling device associated with the first end of the flexible member for winding up and unwinding the flexible member; an attaching device at the free end of the flexible member; an attaching mechanism operable for selectively being connected to and disconnected from the attaching device whereby when the attaching device and the attaching mechanism are connected, the flexible member can be suspended from its ends to form the compartment and whereby the attaching device can be disconnected from the attaching mechanism to loosen the flexible member to enable emptying of the compartment; and a device arranged after loosening of the flexible member to introduce the flexible member in the attaching mechanism so as to bring t

Abstract: A trimming saw arrangement comprises a root-cutting station, a trimming station, and a feed line for advancing timber, perpendicular to its longitudinal direction, through the stations and to a sorting station having a sorting conveyor. The stations include a plurality of cutting or trimming places arranged one after the other in the feed direction and a distribution flap and conveyor for distributing arriving timber to the respective places responsive to the amount of timber accumulated in a storage bin associated with each cutting or trimming place.

Abstract: A collecting arrangement for elongated articles such as sawn timber, preceding delivery to a processing station, includes a rectangular frame provided with a feed conveyor constituted by a set of parallel spaced endless conveyor units pivotally mounted at one end along one side of the frame and from which they are transferred to a discharge conveyor also constituted by a set of parallel spaced endless conveyor units pivotally mounted at one end along the opposite side of the frame, the discharge conveyor being operated in the same direction as the feed conveyor but in a step-like manner. The feed and discharge conveyors are supported below by a carrier girder extending transversely of and movable along the length of the conveyors on arc-shaped or polygonally curved runways extending along the other two opposite sides of the frame.