Glass manufacturing – Control responsive to condition sensing means – Temperature or heater control
Patent
1984-04-25
1985-05-28
Kellogg, Arthur
Glass manufacturing
Control responsive to condition sensing means
Temperature or heater control
136230, 136242, C03B 524
Patent
active
045198306
ABSTRACT:
An improved temperature sensing structure (40) for use in a glass bending furnace (10) is made of the following. A thermocouple element (42) is provided which has a pair of thermocouple leads (44) and (46) terminating in a junction (48) which defines a planar loop portion of the thermocouple element. Mounting structure (50) is provided for mounting the pair of thermocouple leads with the planar loop portion thereof projecting outwardly from a free end. A protection tube has an elongated portion (54) in surrounding relationship to the mounting structure which mounts the pair of thermocouple leads and a free end portion (56) which in part surrounds a significant portion of the planar loop portion of the thermocouple element. The surrounding part of the free end portion of the protection tube is positioned so that the planar loop portion of the thermocouple element lies in a plane in facing relationship to an unsurrounding part of the free end portion of the protection tube. A quartz tube (62) encloses the planar loop portion of the thermocouple element. The protection tube is positioned in the wall structure of the glass bending furnace so that the unsurrounding part of the free end portion of the protection tube is in a facing relationship with a radiant heat generating device whereby the planar loop portion of the thermocouple element, which is protected by the quartz tube, can give an accurate reading of the radiation being given off by the radiant heat generating device in facing relationship thereto.
REFERENCES:
patent: 2120452 (1938-06-01), Amsler
patent: 2579108 (1951-12-01), Bock et al.
patent: 3123344 (1964-03-01), Ross
patent: 3479172 (1969-11-01), McCown et al.
Ford Motor Company
Johnson Olin B.
Johnson William E.
Kellogg Arthur
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