To provide a housing pattern dealing with a keeper made of a synthetic resin as a ready made article capable of being used to obtain a metal crown having an overhanging part for mounting the keeper by mounting the crown at a centripetal side and/or a centrifugal side of a crown wax pattern, burying the crown together with the pattern, incinerating to volatilize the pattern, and then casting the crown in a formed casting space.
A coupling part (3) is provided at a side of a housing 2. A guiding part (4) is extended upward via the coupling part (3). Further, a holding part (5) is extended upward from a top surface (4a) of the guiding part (4). A recess (6) is formed on an upper surface of the housing part. In this case, an angle formed between a guiding surface (4b) of the guiding part and an upper surface of the housing is set to 90 degrees or more.
OKADA MICHIO
ASAI HIROMICHI
HASEGAWA AKIRA
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