Method and apparatus for increasing furnace capacity

Heating – Accessory means for holding – shielding or supporting work... – Fluid tight metallic heat transferring box – shield or hood

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4322542, 432260, C21D 900

Patent

active

053642660

ABSTRACT:
The present invention provides an inexpensive furnace modification which increases the productivity of the furnaces without requiring extensions to the furnace member or the surrounding building. Existing inner covers are extended a predetermined amount to accommodate the additional steel product within the volume defined by the inner cover. This is done by either adding a section to an existing inner cover, or by providing new covers of increased height. A ring structure of the predetermined additional height required and having the same diameter as the furnace member is placed over the inner cover and positioned to rest on the furnace base so that it encircles a portion of the inner cover. The furnace member is then placed over the inner cover and positioned to rest on the ring. Preferably, both the ring and the furnace member have annular locating lugs which coact with locating posts adjacent the base. As a result, in order to place or remove the furnace member it needs to be raised above the floor by the same amount that the inner cover height has been increased and not by twice that amount which would be required if this height were added to the furnace member. As a result, the furnace member fits over the extended inner cover, and thus, the additional height available above the furnace need only be the same distance as the height of the inner cover extension.

REFERENCES:
patent: 3081074 (1963-03-01), Blackman et al.
patent: 3386721 (1968-06-01), Jones et al.
patent: 3802834 (1974-04-01), Corbett, Jr.
patent: 3971875 (1976-07-01), Regalbuto
patent: 3975145 (1976-08-01), Hill et al.
patent: 4165868 (1979-08-01), Southern
patent: 5207573 (1993-05-01), Miyagi et al.

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