Apparatus for injecting molding reinforced plastic articles

Claim 1

In combination with apparatus for molding plastic articles from a viscous mixture which resists transport, said apparatus having an inlet and means for forcibly feeding the mixture intermittently from the inlet into a mold in which the articles are formed; a mixing device for continuously receiving separately fed dry materials and liquid materials and having means for mixing the materials to form said mixture, and means for continuously and forcibly feeding said mixture from an outlet; and a transport device including a conical hopper having a zone at its wider end for receiving and accumulating said mixture fed continuously from the outlet of the mixing device, screw means for intermittently forcing the mixture from the other end of the hopper through the inlet of the molding apparatus, and blade means rotatable coaxially about and converging toward said screw means, said blade means also being twisted so as to be angularly disposed to the wall of the hopper and trailing relative to the direction of rotation for rolling said mixture from said zone spirally along the hopper wall into said screw means.