(under subclass 239) Apparatus in which (1) platform structure that forms part of the floor a heating chamber is loaded while displaced from the rest of such chamber and carries the work into the chamber as it is moved into assembled position; or (2) a cart specialized for use in carrying work to be heated into a furnace.
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136+, for a work chamber having combustion product supply means and a movable floor section carried by an external guide or axle by which work is progressed through a work chamber.