Patent ID: 8267573

Claim:
A mixer apparatus operating in a rotating bowl for the mixing of food ingredients the apparatus including: a pair of counter rotating beater elements; an outer beater element and an inner beater element; said outer beater element and said inner beater element meshing while rotating without making contact one with another; each said outer beater element and said inner beater element including two pairs of juxtaposed beater blade elements; said beater blade elements comprising strips of material shaped to form generally outwardly projecting loops attached at their first ends to respective lower ends of supporting shafts of said beater elements and interconnected at their second ends; characterized in that said apparatus includes beater blade elements of at least one of said beater elements having a non abrading insert inserted into each opposing beater blade element of at least one of said juxtaposed beater blade elements; each said non abrading insert inserted at a point intermediate said supporting shaft and said interconnected second ends; said apparatus further comprising spring means acting on the upper end of a said supporting shaft of said at least one beater element so as to urge said inserts into contact with a base portion of said rotating bowl; said inserts adapted to urge small quantities of said food ingredients from a thin distributed layer of said food elements spread across the base portion of said bowl during use into a mixable concentration of said ingredients.