Loading patent…
AssigneeSutter Products Company
InventorsLawrence E. Flora, Billy G. DuBois
Estimating the term…
The apparatus comprises high pressure injection means for supplying during an accurately adjustable controlled cycle time an accurately adjustable controlled volume of atomized cold set catalyst into a high pressure dry air, nitrogen and/or CO.sub.2 gas stream passing through the core box to cure the resin followed by a continuing air, nitrogen or CO.sub.2 gas purging of the core box. The fumes from the core box are drawn through a natural gas or propane fired fume incinerator wherein an excess air-fuel mixture causes oxidation of the fumes during a controlled temperature and residence time. The fume incinerator operates continuously at a constant temperature under control by an automatic temperature sensor regardless of fume input and includes suction means to prevent back flow of gasses from the incinerator to the core box.
Production apparatus for making cold set foundry cores or articles comprising a pattern box adapted to receive fully enclosed cold set resin coated sand cores or articles, high super atmospheric pressure accurately adjustable liquid catalyst injection means adapted to repeatedly supply predetermined quantities of atomized liquid catalyst to said box, said injection means including controls adapted to actuate cyclically in coordination with the curing cycle of said apparatus, purging means adapted to purge fumes in coordination with said curing cycle from said box, and incineration means adapted to continuously draw fumes from said box and oxidize said fumes to inert substances.
Dependencies are inferred from the claim text.