1851 Great Exhibition: Official Catalogue: Class VIII.: Alfred Gregory
From Graces Guide
69. GREGORY, ALFRED, 54 St. George Street East — Inventor.
Safety-plate, to cover the aperture of a ship's scuttle, instead of the whole scuttle being covered with lead, copper, or wood. It is an external plate, put on from the inside, making it a solid compact body of brass. It is designed to save expense in the usual way of covering, the nails of which injure the ship's sides; also the multiplied expenses of coverings, this mode lasting until the scuttle is worn out; to make the windows safe in case of storm in the space of one minute, and, being water-tight, to prevent any inrush of water; thus tending to the preservation of human life, etc.— Registered.
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