O/y Kyro A/b Tamglass

Tamglass Engineering Oy

Tamglass Oy

Kauko K Anttonen

Pauli T Reunamaki

Erkki P Yli-Vakkuri

Jukka H Vehmas

The invention relates to a nozzle assembly for a flat-glass tempering machine. A nozzle cover (2) includes two types of orifices side by side. A number of orifices (7, 8) are linked to the pressure of a compressor (11) and another number of orifices (6) are linked to the pressure of a blower (12). Thus, the different orifices supply air of different pressures.

Nozzle assembly for a flat-glass tempering machine

The invention relates to a method and apparatus for bending and tempering a glass sheet. A heated glass sheet is carried from a furnace onto a conveyor in a bending and tempering section, said conveyor comprising a plurality of individual conveyors in the form of an endless belt or caterpillar track. The conveyor serves as a bending mould, a transfer conveyor and a tempering support. A glass sheet is bent by pivoting the body structures (6) of individual conveyors relative to each other in a manner that the lower runs of individual conveyors pull away from each other in lateral direction while, at the same time, the upper conveyor runs are bending to an arched shape. The chilling blast for bent glass is effected through openings (17, 18) in the halted conveyor.

Method and apparatus for bending and tempering a glass sheet

The invention relates to a support frame for a resistor element in a heating furnace for glass sheets, said flame providing a substantially continuously extending, elongated rest surface for a resistor element. The support frame elements consist of trough-like castings and are fastened to each other in an articulated manner. The short frame elements are easy to cast and can be assembled into long continuous support frames for resistor elements, the thermal stresses of said frames not passing over the link points. A long continuous support frame structure makes it accordingly possible to employ resistor elements that are long and continuous and thus readily replaceable.

Support frame for resistor elements in a heating furnace for glass sheets

The invention relates to a resistor element assembly for a glass sheet heating furnace and to a method of replacing a resistor element. A resistor element is built by placing successively in longitudinal direction ceramic elements, with a resistance wire wound therearound. Between the ceramic elements are fitted ceramic spacer blocks whose diameter exceeds that of the resistance wire coils. The resistor element is carried by a support frame upon the spacer blocks. A problem to be resolved is to provide a long resistor element, wherein the major variations in length between the components of various materials caused by major temperature variations do not produce deformations in resistance wires. This problem has been resolved by fitting between one end of the support frame and the corresponding end of the resistor element a tensioned spring which compresses the resistor element at all operating temperatures against a limit stop at the other end of the support frame. The resistor element can be replaced by releasing said spring from the support frame and by pulling the resistor element out of a furnace by utilizing a core pin extending through the entire resistor element, whereby the ceramic elements remain subjected to compression stress. By using an auxiliary spring between the end of said core pin and the end of said resistor element, the compression holding the resistor element together can be maintained also during transportation and installation.

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Tampere, Finland

Kauko K Anttonen