Agitator insert for reactive liquid polymer mixer

Claim 1

In apparatus for mixing a plurality of reactive liquid components comprising a mixing head and a nozzle assembly mounted thereon wherein said nozzle assembly comprises an open ended tubular casing having rotary agitator means therein, means in said head for driving said agitator, said agitator including an open ended basket section disposed with its open end adjacent a face of said head, liquid component feed passages in said head terminating in feed ports which open onto the face of said head within the confines of the open end of said basket section, the improvement which comprises: an insert member adapted to be received in the open end of said agitator basket section and rotated therewith, said insert member comprising a spider having a hub and a plurality of legs, each of said legs consisting of a radially extending portion, an axiaLly extending portion joined to the outer end of said radial portion, and a terminal portion secured to the end of the axial portion and extending partially inward in a radial direction, said spider being supported in said basket section of said rotary agitator with said terminal leg portions disposed in close axial spaced relation to said feed ports.