Pulverizer hammer for comminutating apparatus

Solid material comminution or disintegration – Apparatus – Rotary striking member or hammer

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Details

241195, B02C 1328

Patent

active

041292626

ABSTRACT:
A hammer is provided for pulverizing and comminutating apparatus of the hammer mill-type with this hammer including both tearing and shearing edges for enhanced effectiveness in obtaining size reduction of both friable and non-friable materials. This pulverizer hammer includes a relatively narrow tearing edge which is disposed in spaced parallel relationship to the pivot bearing of the hammer. A side edge surface of the hammer associated with that tearing edge is formed in arcuately curved, receding relationship thereto for directing and urging particles of waste material radially outward toward the tearing edge where they will be subjected to further pulverizing action. A shearing edge is also formed along one corner of the side edge surface of the hammer and extends radially in receding relationship to the tearing edge. The arculately curved and contoured surface is also configured to extend in receding relationship with respect to the shearing edge. Both the tearing and shearing edges are preferably provided with a replaceable hard surface coat to substantially extend the operational life. The hammer is also formed with two pivot bearings and four sets of tearing and shearing edges to permit reversible mounting of the hammer as to both end-to-end relationship and as to opposite side edge surface relationship thereby providing four material contacting faces to further extend the effective operational time period before replacement may be required of the hardened surface contact faces.

REFERENCES:
patent: 1850244 (1932-03-01), Shelton
patent: 1954175 (1934-04-01), Jensen
patent: 2763439 (1956-09-01), Mankoff
patent: 3612420 (1971-10-01), Hull
patent: 3805660 (1974-04-01), Burrough
patent: 3929296 (1975-12-01), Stoeber

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