Cutting – Cutter assemblage or cutter element therefor – With means permitting removal of cutter element
Patent
1989-06-13
1990-02-06
Schran, Donald R.
Cutting
Cutter assemblage or cutter element therefor
With means permitting removal of cutter element
83833, 83834, B27B 3314
Patent
active
048980579
ABSTRACT:
A center drive cutter chain for mounting on a cutter bar. The chain comprises center drive cutter links having forward and rearward pivot openings and pairs of oppositely disposed side links pivotally interconnected by pins to the cutter links and alternating non-cutter drive links. The side links each have forward and rearward pivot openings and forward and rearward bar engaging undersides. For the side links following a center drive link, the width of each side link between its forward pivot opening and forward bar engaging underside is less than the width between its rearward pivot opening and rearward bar engaging underside. When the axes of the pins extending through the pivot openings of the cutter links and following side links are substantially in a plane, the forward bar engaging undersides of the side links are spaced apart from the adjacent side rails of the bar. This spacing enables the center cutter link to pivot about its forward pivot opening to reduce the penetration of the cutter tooth into the workpiece, thereby reducting the vibration of the chain when the cutter link encounters resistance in a workpiece.
REFERENCES:
patent: 4122741 (1978-10-01), Engman et al.
patent: 4567803 (1986-02-01), Anderson
patent: 4590836 (1986-05-01), Doiron
patent: 4604932 (1986-08-01), Doiron
patent: 4608901 (1986-09-01), Doiron
patent: 4643065 (1987-02-01), MacGavin
patent: 4756221 (1988-07-01), Nitschmann et al.
Blount, Inc.
Schran Donald R.
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