Caps for hammermill rotors secured by individually-removable pai

Solid material comminution or disintegration – Apparatus – Rotary striking member – rotor structure

Patent

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Details

241197, B02C 1316

Patent

active

043135757

ABSTRACT:
Leading edges of rotor-plates which carry the swing hammers of hammermills are protected from wear by removable caps, each secured by paired pin assemblies, each of which may be shifted axially to permit removal of the cap it normally secures. Each pin assembly includes a pair of tubular pins or pin portions which may be axially abutting one another, each assembly including at least one portion which is short enough to be removed (or moved axially to a position which permits removal of the cap). In the original form of the parent application, each assembly was totally countersunk within the cap, having heads at each end that were countersunk and having in each head the countersunk head or nut of a tie-bolt. In the form preferred at the time of filing this continuation-in-part application, the pair of tubular pivots forming each assembly is held in place by reliable friction resulting from the expanding force of split-spring-tubes forcefully squeezed substantially closed during insertion. Either form lies entirely within the side faces of the cap where a hammer swings adjacent to the cap so as not to interfere with the swing of the hammer. With both forms, the caps can be replaced without removing the rotor from the hammermill, and without removing the hammerbolt that holds the hammers (unless that hammerbolt extends directly through the side walls of the caps, as may be the case in some instances).

REFERENCES:
patent: 1940116 (1933-12-01), Brooks
patent: 2133212 (1938-10-01), Schutte et al.
patent: 3510076 (1970-05-01), Perdue
patent: 3727848 (1973-04-01), Francis
patent: 3844494 (1974-10-01), Hightower
patent: 4046327 (1977-09-01), Cranor

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