Process for manufacturing bimetallic coins and metals

Abstract From the Canadian patent

This invention relates to a process for manufacturing bimetallic coins or medals by connection by creeping of a ring with an insert, wherein: - an insert is used, comprising a discontinuous groove on its periphery; - said insert is positioned in said ring; and - crimping of the ring on the insert and mintage of the piece are effected in one single operation by using a die whose action provokes creeping of the metal of the ring towards the insert and in the discontinuous groove made on the periphery thereof and stamping of the assembly, i.e. the formation of the surface of the coin or the medal.