Carrier roll winding machine having blow box and web severing

A carrier roll winding machine for winding up an endless web, the machine comprising:

• first and second carrier rolls which extend generally parallel to each other, are spaced apart yet close enough for defining a winding bed for receiving a reel to be supported on the rolls for winding the reel of web material, wherein the web is guided to the reel by running in from below the first roll and wrapping around the first roll to pass between the rolls to the reel;
• a blow box disposed below the carrier rolls and extending beneath the space between the rolls, the blow box being defined by a first wall located below and stationary in position with reference to the position of the first carrier roll and having an end extending toward the first carrier roll and by a second wall located below and stationary in position with reference to the position of the second carrier roll and having an end extending toward the second carrier roll;
• sealing elements at the ends of the walls for sealing the first and second walls to the first and second rolls, respectively;
• at least one of the first and second walls including a wall part movable with respect to the well supporting the respective sealing element and the movable wall part being movable so as to selectively move the respective sealing element at the end thereof, whereby the sealing element on the movable wall part is a movable sealing element, movable away from and toward the position sealing to the respective carrier roll;
• a connection into the blow box for compressed air;
• a web severing device movable with reference to the blow box and the carrier rolls between a non-severing position located outside the blow box and an operating position located inside the blow box at which the severing device may sever the web which is moving toward the reel;
• the severing device being shaped and supported to be movable between the respective carrier roll and the movable sealing element that has been moved away from the sealing position as the severing device is moved from outside to inside the blow box into the operating position thereof for severing the web, and from inside to outside the blow box to the non-severing position.