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US 4,361,306 AGranted
Hot top board, method of fastening to ingot mold, and resulting assembly
AssigneePneutek, Inc.
InventorRobert F. Edwards
Life of this patent
Estimating the term…
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AssigneePneutek, Inc.
InventorRobert F. Edwards
Estimating the term…
In a hot top mounting method for mounting hot top insulation boards to the inside upper surface of a metal ingot mold, a plurality of spaced parallel metal straps are first affixed to a surface of each board, and each board is then fastened to the mold inner wall by setting a plurality of headed fasteners through the strap and into the mold wall using an air operated, magazine-type fastener driving tool. The straps are preferably of channel cross-section which then act as guides to locate the tool for the fastening operation. The channel straps when disposed vertically can have a row of spaced apertures in one edge which selectively receive a U-shaped hanger for suspending the board from the mold top edge for the fastening operation, the hanger being removed once fastening is complete. The straps can be disposed in other orientations such as horizontal depending upon the fastening pattern required. The tool is provided with an elongated handle to permit it to be used down in the mold from above the mold.
A method for fastening hot top boards to the top interior of a metal ingot mold comprising:
A hot top board element for lining the top interior of a metal ingot mold comprising a substantially uniformly thick flat board of hot top material having at least one metal strap fastened to one flat surface thereof and constituting an extended metal washer for the reception of nails for fastening the board to the interior wall of a mold, said at least one metal strap is of channel transverse cross-section with the base of the channel in contact with said one surface, whereby the channel can constitute a guiding and locating element for a nailing tool.
A hot top board for lining the top interior of a metal ingot mold comprising:
In combination with a hollow metal ingot mold having a top end edge, a hot top board having first and second flat opposite surfaces and oriented so that said first surface confronts an inside surface of said mold and said second surface faces away from said inside surface, at least one elongated channel shaped strap extending along and secured to said second surface, said strap being penetrable by the shank of a nail having a head so as to constitute an extended metal washer for one or more nails used to fasten said board to said inside surface of said mold, and hanger means for suspending said board from the top end of said mold, said hanger means comprising at least one hanger having one hook-shaped end overlapping and engaged with the top end edge of said mold and an opposite end attached to said strap.
A method for fastening hot top boards to the top interior of a metal ingot mold comprising:
Dependencies are inferred from the claim text.