Machine for polishing surface of glass plate

A machine for polishing a surface of a glass plate, comprising:

• a polishing endless belt having a polishing layer in an endless outside surface thereof for polishing the surface of the glass plate;
• first moving means connected drivingly to the belt for moving the belt in a predetermined direction, the first moving means having a first drum means and a second drum means spaced from the first drum means, the belt being mounted between the first and second drum means, an intervening planar region of the belt between the first and second drum means defining a polishing area for the glass plate;
• supporting means disposed on an inside surface of the belt in the polishing area for supporting the polishing belt in a flat condition in the polishing area;
• holding and pressing means for holding the glass plate to be polished and pressing the held glass plate in the polishing area against the outside surface of the polishing belt supported by said supporting means, the first and second drum means each being movable relative to the holding and pressing means in a plane parallel to the intervening planar region and in a direction transverse to the predetermined direction of movement of the polishing belt;
• and
• second moving means for moving the first and second drum means relative to the holding and pressing means in a reciprocating motion in the parallel plane and in the transverse direction thereby to move the polishing belt in a reciprocating motion relative to the holding and pressing means in the parallel plane and in the transverse direction.