Method and apparatus for heat treating and processing an edge of a large thin glass sheet used for a liquid crystal TV or the like. The method for processing an edge of a glass substrate according to the present invention is characterized by cutting an edge of a glass substrate by bringing a heated member into contact with the edge of the glass substrate that is cooled, and then moving the heated member. According to the present invention, provided is a new method of removing the edge of glass in a strip shape without producing dust. Also, according to the method of the present invention, since it is unnecessary to heat the glass at a high temperature, a large furnace is not necessary. Further, since a post-processing operation such as preheating or annealing is unnecessary, the manufacturing process is highly simplified.

The invention provides a block splitter device comprising first lower and second upper opposed block splitter assemblies. The block splitter assemblies have first and second forming edges that extend at least the majority of the distance from a first end to a second end of the block splitter assembly and have first ends disposed near a median split plane and second ends disposed further away from the median split plane than the first ends. Methods of using the block splitter device are described.

The invention provides a block splitter device comprising first lower and second upper opposed block splitter assemblies. The block splitter assemblies have first and second forming edges that extend at least the majority of the distance from a first end to a second end of the block splitter assembly and have first ends disposed near a median split plane and second ends disposed further away from the median split plane than the first ends. Methods of using the block splitter device are described.

A method for forming a silicon ingot includes the following steps: providing a silicon ingot of variable electrical resistivity and containing interstitial oxygen, determining the interstitial oxygen concentration in different areas of the silicon ingot, calculating the concentration of thermal donors to be created in the different areas to reach a target value of the electrical resistivity, and subjecting the different areas of the silicon ingot to annealing so as to form the thermal donors. The annealing temperature in each area is determined from the thermal donor and interstitial oxygen concentrations of the area and from a predefined annealing time.

A method for forming a silicon ingot includes the following steps: providing a silicon ingot of variable electrical resistivity and containing interstitial oxygen, determining the interstitial oxygen concentration in different areas of the silicon ingot, calculating the concentration of thermal donors to be created in the different areas to reach a target value of the electrical resistivity, and subjecting the different areas of the silicon ingot to annealing so as to form the thermal donors. The annealing temperature in each area is determined from the thermal donor and interstitial oxygen concentrations of the area and from a predefined annealing time.

A cutting and separation head for manual ceramic cutters, including a body that carries a grip handle and a cutting tool, mounted on movable supports on longitudinal guides of the cutter, and able to rotate with respect to a first transverse rotary shaft; a separator provided with a foot, a class 1 lever, and a first coupling element in the separator that is couplable to a second coupling element in the body of the head; and a cam for releasing the first and second coupling elements, the cam being mounted on the body and relatively rotatable between a first position and a second position.

Frame for an electric apparatus for cutting ceramic elements preferably manufactured by a drawing and punching process starting from a metallic plate, being the frame a unique and continuous part in which one or more lined up going through grooves are arranged along which the cutting disc is movable to carry out the cutting of the ceramic tiles, having one or more bulgings directed in a convex form towards the interior part of the frame, being arranged in each of them a first orifice for draining out the water for cooling the cutting disc, second and third bulgings of the metallic plate being aimed at attachment means and abutment means for foldable legs and first bulgings for joining of the guide supporting and leading the cutting disc.

A method of manufacturing a glass sheet involves forming a scribe in one surface of a glass sheet having a rectangular shape on a periphery of an edge portion of the glass sheet in parallel to the edge portion, and cutting the glass sheet along the scribe as a boundary. The method includes forming the scribe in a region other than both end portions of the glass sheet in a direction along the edge portion; and cutting the glass sheet along a bending portion in which the glass sheet is locally bent, the bending portion being continuously formed in a state of being connected to the scribe and gradually protruding from an edge portion side to an inner side as being shifted away from the scribe.

A toolholder guide system in manual ceramic cutters, including parallel guides for the longitudinal movement of a toolholder that has a handle for the actuation thereof and carries a cutting tool for scoring a ceramic part. The guides are formed by a profile, for example made of aluminium, each guide having upper and lower steel rods, disposed longitudinally, forming races for bearing carriages disposed on the sides of the toolholder. Each bearing carriage has two end bearings disposed at the same height and at least one intermediate bearing disposed at a lower height than the two end bearings.

A toolholder guide system in manual ceramic cutters, including parallel guides for the longitudinal movement of a toolholder that has a handle for the actuation thereof and carries a cutting tool for scoring a ceramic part. The guides are formed by a profile, for example made of aluminium, each guide having upper and lower steel rods, disposed longitudinally, forming races for bearing carriages disposed on the sides of the toolholder. Each bearing carriage has two end bearings disposed at the same height and at least one intermediate bearing disposed at a lower height than the two end bearings.