Century Dictionary and Cyclopedia
- n. In a blast- or cupola-furnace, a plate which closes the opening in front through which the molten metal is drawn off, and the slags, etc., are raked out. The tapping-hole is in the middle of this plate.
- n. A curved plate used to prevent a flexible disk-valve from opening or lifting beyond the distance limited by the plate.
“d "'d"', on the guard-plate, d', the said parts being constructed and arranged to operate in connection with the planes, a "'a"', on the projection, a', substantially as and for the purpose described.”
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