Abstract: An improved apparatus for handling a moving material of indeterminate length utilizes a pair of endless elements located on opposite sides of an intended path of travel for the moving material. Each element is configured to engage and hold a corresponding edge of the material at least partially through the apparatus. The apparatus includes a detector assembly adjacent the path of travel for detecting deviation of at least one edge of the moving material from a normal operating path and outputting signals to initiate corrective reaction to the deviation. The reaction is defined in a predetermined relationship to time the edge remains out of its normal operating path. The apparatus also includes an adjustment device in operative communication with at least one frame member and the detector assembly. The adjustment device receives the corrective signals and positionally adjusts the corresponding frame member in response thereto to achieve the normal operating path.

Abstract: Apparatus for handling rolls of web goods such as fabric, preparatory to the unwinding of same. A carriage is movable vertically about a support frame between a first position where a roll of web goods is stored and a second upper position where the roll of web goods will be unwound. The carriage includes two independently driven arm assemblies, each of which has a chuck for holding engagement with the core of the roll of web goods. With the carriage in the upper position, once a roll of web goods is fully unwound leaving the bare core chucked between the movable arms, a core receiver is placed beneath the core, after which the core is unchucked and automatically stripped from the arms, whereby it is caught by the core receiver. The core receiver then moves out of the way and the carriage descending about a new roll of web goods. When the chucks are properly vertically aligned with the core of the new roll, the arms are driven inwardly to position the chucks within opposite ends of the core.

Abstract: Apparatus and method for monitoring a moving web for structural defects at a plurality of independent locations across the width of the web, determining the location and magnitude of a detected defect and controlling movement of the web responsive thereto. A plurality of light sensing elements may be employed operatively connected to a microprocessor. A separate edge sensor may be employed and is claimed.