Apparatus for equalizing the temperature of conveyor rolls in a

Details Apparatus for equalizing the temperature of conveyor rolls in a Apparatus for equalizing the temperature of conveyor rolls in a

1985-05-20

1986-05-27

Kellogg, Arthur

Glass manufacturing

Product cooling means

With preceding reheater

65111, 65118, 65356, 432148, 432194, 432226, 432249, C03B 2302

Patent

active

045913749

ABSTRACT:
The invention relates to an apparatus for equalizing the temperature of conveyor rolls in a glass-tempering furnace, said furnace comprising a thermally insulated housing (1) confining a heating chamber (8), conveyor rolls (4), extending horizontally between the side walls of chamber (8) and lying one after the other in the lengthwise direction of the chamber, heating resistors (5 and 6) in the chamber above and below the array of conveyor rolls, as well as means for driving the conveyor rolls unidirectionally during a first cycle and reciprocally during a second cycle. Since the reciprocating movement means that a glass sheet remains longer in contact with the midsection rolls, these rolls cool more rapidly. In order to equalize the temperature of the rolls, the end sections of the furnace are provided with screen plates (7) mounted between heating resistors (6) below the array of conveyor rolls and the rolls (4) themselves.

REFERENCES:
patent: 1858678 (1932-05-01), McVey et al.
patent: 1957132 (1934-05-01), Callard
patent: 2725680 (1955-12-01), Baker
patent: 3792993 (1974-02-01), Artama et al.
patent: 3862828 (1975-01-01), Ritter, Jr. et al.
patent: 3884667 (1975-05-01), Schraven
patent: 4092143 (1978-05-01), Groot et al.

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