Heat treatment furnace
AssigneeLibbey-Owens-Ford Co.
InventorsDennis M. Csehi, James A. Meeker
Life of this patent
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Abstract
An elongated, horizontal tunnel-type furnace for heat treating workpieces carried in succession therethrough. The furnace is of modular construction and comprises a series of contiguous individual modular sections that define a tunnel-type enclosure. Each modular section comprises a stationary lower enclosure section and an assembled vertically retractable upper enclosure section. The upper enclosure sections are supported along opposite sides by a plurality of spaced, free-standing lifting devices. A screw-jack is associated with each lifting device for raising and lowering the upper enclosure sections relative to the lower enclosure sections. The upper enclosure sections may be raised and lowered individually or joined together and moved as a unit.
Claims15
A furnace for heating a workpiece comprising, an upper furnace enclosure section and a lower furnace enclosure section together defining an elongated, generally horizontally extending heating chamber, a conveyor disposed between said upper and said lower furnace enclosure sections for transporting a workpiece through the heating chamber, a carrier mechanism for supporting said upper furnace enclosure section independently from said lower enclosure section and the conveyor, said carrier mechanism including a stationary column disposed on one side of the heating chamber, a movable column, means for connecting said movable column to said upper furnace enclosure section, and jack means interconnecting said movable column to said stationary column.
A furnace for heating a workpiece comprising, an upper furnace enclosure section and a lower furnace enclosure section together defining an elongated, generally horizontally extending heating chamber, a conveyor disposed between said upper and said lower furnace enclosure sections for transporting a workpiece through the heating chamber, a carrier mechanism for supporting said upper furnace enclosure section independently from said lower furnace enclosure section and the conveyor means, said carrier mechanism including a pair of opposed stationary columns on opposite sides of the heating chamber, a pair of movable columns associated with respective ones of said pair of opposed stationary columns, means for connecting each one of said pair of movable columns to said upper furnace enclosure section, and jack means interconnecting each one of said pair of movable columns to the respective ones of said pair of opposed stationary columns
Dependencies are inferred from the claim text.