Patent ID: 7156146

Claim:
A feeder insert for use in a mold utilized for pouring metal, comprising: a feeder body having a feed volume in the form of an inner space that is delimited by side walls and a top portion, wherein a base region of said feeder body is provided with a feed opening for communication with a hollow mold space; a domed feeder cap displaceably disposed on said feeder body, wherein said feeder cap surrounds said side walls of said feeder body such that an insulating gap is formed between said feeder cap and said side walls, wherein prior to a molding of said feeder insert said feeder cap is fixed in position relative to said feeder body; and at least one spacer of a flexible material disposed between said top portion of said feeder body and a top of said feeder cap such that during a molding of said feeder insert and a placement of said feeder body upon a mold surface, due to molding pressure that occurs said feeder cap is displaceable relative to said feeder body while leaving an insulating gap between said top portion of said feeder body and said top of said feeder cap.