B - Operations – Transporting – 22 – C
Patent
B - Operations, Transporting
22
C
22/143
B22C 7/04 (2006.01)
Patent
CA 1130533
PATTERN PLATE AND PATTERN MATCH PLATE ASSEMBLY ABSTRACT OF THE DISCLOSURE: A pattern plate adapted to support a pattern having a plate body with gage blocks to insure uniform body thick- ness and a plurality of lug and recess sets for forming a series of pockets and bosses in the cope and drag sections of a sand mold. The lug and recess sets are arranged in end-to-end or chain like arrangement adjacent the ends and sides of the body. Each lug and recess set has a pair of arcuate cavities open to opposite sides of the body and a pair of oppositely directed arcuate lugs. Each lug has an arcuate pad projected outwardly along its crown to form a well in the bottom or top of the pockets in the molds to accommodate loose foreign particles, as sand. In one form of the invention two pattern plates are secured together in a side-by-side relation to form a match plate pattern assembly. The pads on the lugs space the plate bodies from each other to provide a venting passage between the bodies. Holes in the bodies permit the air to flow through the bodies and passage between the plate to the atmosphere. Each body has externally projecting lugs with pads and recesses to form pockets with wells and bosses that fit into the pockets.
335393
Clark Bruce A.
Mantha & Seaby
LandOfFree
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