(under subclass 73) Apparatus comprising means to collect or to recirculate vaporous material which is (1) part of that used during the molding operation or (2) driven off from the molding material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
86, for apparatus which includes means to handle waste liquid.
215+, for shaping means and means to gather excess or
rejected material, especially subclass 217 which recycles the material.
420, for apparatus which includes means to remove entrained air without recovering or recycling.
SEE OR SEARCH CLASS 65, Glass Manufacturing,
157, for glass working or treating apparatus including means providing a special atmosphere.
164, Metal Founding,
259, for metal founding apparatus including a means to provide an inert or reducing atmosphere.
