Hammer mill with integral subsampling portion

Claim 1

A hammer mill with included subsampling means comprising a cylindrical casing component, a cylindrical screen component concentric within the casing component and a rotatable shaft component carrying comminuting elements centered axially within the screen component substantially as follows: a. curved means defining said casing component in the form of a vertically disposed, hollow right cylinder, 1. means defining a circular, flat top integral the casing and provided with a concentric circular opening sized to permit passage therethrough of the said screen component, 2. a plurality of vertical baffles disposed full length of the inner curved surface of the casing component, said baffles extended radically inward to contact the outer surface of said screen component, 3. at least one pair of baffles together with the adjacent casing and screen surfaces defining a compartment extended vertically the length of the casing from the circular top of the casing where the compartment is provided with a flap closure hinged to the casing top to a location below the bottom edge of the screen component, the bottom of the compartment provided with means defining an open delivery chute directed radially outward and downward to the outside of the casing, 4. means defining a circular, flat, partial bottom for the casing component, said partial bottom effecting closure of the concentric central portion of the casing inside the baffles and concomitantly exposing the radially adjacent annular area intermediate the baffles and extending to the casing, said partial bottom integral and supported by the lower inboard ends of the baffles and said partial bottom provided with center located bearing means and associated support means adapted jointly to carry a vertically mounted rotatable shaft, which shaft passes through, extends above and extends below said partial bottom, b. curved foraminous means defining said screen component in the form of a hollow right cylinder with open bottom and of diameter approximating but less than that of the partial bottom of the casing component and of diameter providing a clearance fit inside the inboard edges of the casing baffles, 1. means defining a circular top integral the screen component, said top provided with an extended peripheral edge in the form of a flange extended radially outward beyond the curved foraminous surface an amount sufficient to provide overlap closure of the circular opening in the top of the casing component, said peripheral edge provided with fastening means adapted to coact with counterpart fastening means on the top of the casing component thereby to position and immobilize the screen component relative the casing component, the circular top of the screen component provided additionally with a centrally located, vertically disposed, conical shaped feeding means adapted to provide ingress relative the interior of the screen component, c. a shaft component passing centrally through the bearing and support means of the casing partial bottom and extending above the bottom of the casing component and within the screen component and extending exposed below the partial bottom of the casing component, rotational drive means integral the lower exposed end of the shaft component, radially extended impact grinding elements distributed in fixed, stacked, array along that portion of the shaft above the casing partial bottom and inside the casing and screen components, said elements adapted to sweep, with rotational clearance, the interior of the screen component.