Plastic and nonmetallic article shaping or treating: processes – With step of making mold or mold shaping – per se – Utilizing surface to be reproduced as an impression pattern
Patent
1997-09-10
1998-07-07
Davis, Robert
Plastic and nonmetallic article shaping or treating: processes
With step of making mold or mold shaping, per se
Utilizing surface to be reproduced as an impression pattern
425177, 425318, 425DIG44, B29C 3340
Patent
active
057764018
ABSTRACT:
A method for manufacturing rubber molds using a mold making apparatus having first and second discs of rubber mold material with models of articles to be cast positioned therebetween includes a bottom plate having a centrally located portion which engages the first sheet of rubber mold material and an outer reduced thickness flange, and a top plate which overlies the bottom plate. The top plate has a centrally located portion which engages the second sheet of rubber mold material and an outer reduced thickness flange corresponding to the flange of the bottom plate when disposed over the bottom plate. A plurality of thumb turn members are provided for tightening the top plate towards the bottom plate by hand. The arrangement is such that the models disposed between the first and second discs of rubber mold material form mold cavities therein.
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Conley Casting Supply Corp.
Davis Robert
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