Web severing device
AssigneeBaldwin-Korthe Web Controls, Inc.
InventorClifford L. Larson
Life of this patent
Estimating the term…
Abstract
A web severing device has a pair of spaced-apart carriages straddling the path of the web, a severing blade being attached to one of the carriages. Power apparatus are provided for moving the carriages toward each other to bring the blade into severing contact with the web. Resilient apparatus are provided to prevent activation of the severing blade if a relatively rigid foreign object such as a human finger is accidentally embraced between the carriages and to prevent injury. When only the web is disposed between the carriages a portion of the resilient apparatus also functions to urge the blade-carrying carriage into web severing contact.
Claims11
A web severing device for a printing press or the like comprising, in combination, a pair of generally parallel spaced-apart elongated carriages positioned transverse to the direction of travel of the web and straddling the path of the web so that the web passes between said pair of carriages, a severing blade attached to a first carriage of said pair of carriages, a first means for moving the second carriage of said pair of carriages in a direction toward said first carriage to narrow the spaced-apart distance between said carriages, a second means responsive to further movement of said second carriage toward said first carriage for moving said first carriage in the opposite direction toward said second carriage to bring said blade into severing contact with said web, and means for preventing effective activation of said responsive means during any period of time in which a relatively non-flexible, rigid object is disposed between said carriages.
Dependencies are inferred from the claim text.