Heating – With cleaning means for apparatus
Patent
1975-05-05
1976-11-09
Camby, John J.
Heating
With cleaning means for apparatus
432139, 432 2, 1510407, 15 93R, F27D 2300
Patent
active
039908364
ABSTRACT:
A hearth cleaning apparatus includes a wheeled car movable along a floor at the side wall of a reheat furnace wherein metallic workpieces are heated while they are advanced along the furnace hearth. The car is latched to the side wall of the furnace at any one of the normally-closed openings therein. An inverted U-shaped spacer slab is passed through the furnace between two workpieces for access to the hearth. An elongated digging bar which may be cooled by the internal flow of water is supported by the car and advanced through an opening in the side wall of the furnace to engage and loosen slag or other materials adhered to the soaking hearth while exposed by the spacer slab. The car includes a vernier elevation adjustment for the digging bar at the point of support adjacent the furnace and a course elevation adjustment for the digging bar at the opposite end of the car. The digging bar is propelled along the furnace hearth by a pair of pinch rolls. An eccentrically-pointed end on the digging bar is rotated by skewing one of the pinch rolls. A pneumatic hammer is releasably coupled by a gripper arm at any desired location along the digging bar. A position control piston and cylinder assembly moves the pneumatic hammer along the car with the digging bar and retracts the pneumatic hammer relative to the digging bar at the end of the stroke of the position control piston and cylinder assembly.
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Bricmont & Associates, Inc.
Camby John J.
Yuen Henry C.
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