Web tensioning device
AssigneeITW Limited
InventorsPeter William Cook, Christopher Brunning
Life of this patent
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Abstract
A device for tensioning web, such as a plastics web dispensed from a shuttle in a wrapping machine, is disclosed. The wrapping machine usually includes an endless track positioned about an object to be wrapped and the shuttle travels on the endless track, dispensing the web as it goes. The rate at which web is dispensed varies as the shuttle progresses around the track and is dependent upon the shape of the track and the shape of the object to be wrapped. The web tensioning device attempts to maintain a constant tension in the web and includes a pair of rollers covered with resilient material. The rollers are urged together to form a nip with the resilient covering of the rollers compressed in the nip. The web is fed between the nip of the rollers.
Claims9
A web tensioning device for a shuttle adapted to apply a generally helical winding, the web tensioning device including a pair of substantially rigid rollers covered with resilient material and urged against one another to form a nip with their resilient covering compressed in the nip and with the web being fed between the nip of the rollers.
Dependencies are inferred from the claim text.