Plate Moulding Items
Description
Seventeen items relating to the invention of plate moulding by Frederick Charles Adams who entered the Dockyard as an apprentice in 1878 and became Inspector of Pattern Makers in 1898 until his retirement in 1924, during which time he invented plate moulding.
Plate moulding allowed the duplication of patterns in sand boxes. The items here include casting boxes and lids, locating pins, annulars, impellors and a mould pattern. Casting boxes (or flasks) were used to contain moist sand mixed with clay as the molding material. Impellor casting mould patterns, attached to the casting box lid (cope) or base (drag), would be pressed into the sand until an impression is left and a locating pin would be used to more accurately position the pattern within the sand once in the casting box. The patterns themselves were designed by an engineer and made from wood, metal or plastic by skilled pattern makers. Molten metal would then be poured into the impression left by the pattern and, once cooled, formed a solid casting.
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Object Detail
Width: 180mm
Depth: 39mm (1 9/16")
Height: 28mm
Width: 48mm
Depth: 5mm (3/16")