Apparatuses and methods for applying pressure to edge surfaces

A method of applying pressure to at least a portion of an edge surface, which bridges opposing faces of a workpiece, using an apparatus that comprises a frame;

• a first roller, coupled to the frame and is rotatable relative to the frame about a first pivot axis;
• a second roller, coupled to the frame and is rotatable relative to the frame about a second pivot axis, at least one of the first roller or the second roller being translatable relative to the frame along a first axis, which intersects and is perpendicular to the first pivot axis and to the second pivot axis;
• a rotation-control member, coupled to the frame and movable relative to the frame;
• a first biasing member, coupled to the frame;
• and a second biasing member, positioned, in compression, between the frame and the rotation-control member, the method comprising steps of:
• aligning the apparatus with the workpiece such that the edge surface of the workpiece is centered along a second axis that is perpendicular to the first axis and that extends between the first pivot axis of the first roller and the second pivot axis of the second roller;
• positioning the rotation-control member at a first location relative to the frame such that the first roller and the second roller are rotatable relative to the frame;
• with the rotation-control member positioned at the first location relative to the frame, moving the apparatus and the workpiece relative to each other, such that the workpiece is received between the first roller and the second roller so that the first biasing member operates in compression along the second axis, perpendicular to the first axis, to the first pivot axis, and to the second pivot axis, thus applying pressure to at least the portion of the edge surface of the workpiece, while increasing a minimum distance (D2), extending along the first axis between the first roller and the second roller, and while the first roller and the second roller apply equal and opposite forces to the opposing faces of the workpiece;
• and
• positioning the rotation-control member at a second location relative to the frame, such that the first roller and the second roller are rotationally and translationally fixed relative to the frame, creating a frictional coupling between the apparatus and the workpiece, which maintains the pressure, applied to at least the portion of the edge surface by the first biasing member.