| http://www.w3.org/ns/prov#value | - My invention further consists of providing a warped surface approaching a warped cam in shape which will cause the clay or other plastic to be moved away from the shaft at the same time it is being advanced toward the point of discharge and in such a manner that the plastic pulled inward by the outer cutting tip or edge and the surface inside of this cutting edge will cause the clay to be squeezed
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