Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1987-04-13
1988-07-12
Eley, Timothy V.
Metal working
Method of mechanical manufacture
Assembling or joining
29514, 241222, 241241, 241286, B23P 1100
Patent
active
047560681
ABSTRACT:
A shearbar attachment and adjustment apparatus is adapted to apply clamping forces to a shearbar in a forage harvester at first locations on opposite ends of the shearbar. The clamping forces prevent the shearbar from backing away from a rotary cutterhead in the forage harvester during chopping of crop material by passing cutting edges of knives on the periphery of the cutterhead close to the cutting edge of the shearbar. Also, the apparatus is adjustable to apply pulling forces on the shearbar at second locations on its opposite ends which are offset inwardly from the first locations. Application of pulling forces at these inward locations relative to the outward locations of the clamping forces tends to compensate for the effect of the convex shape of the shearbar cutting edge by causing bowing of the shearbar at the second locations to provide a more uniform clearance between the cutting edge of the shearbar and the cutting edges of the cutterhead knives.
REFERENCES:
patent: 4190209 (1980-02-01), deBuhr et al.
patent: 4295616 (1981-10-01), Hill
patent: 4436248 (1984-03-01), Lindblom et al.
patent: 4474336 (1984-10-01), Fleming
patent: 4506839 (1985-03-01), Black
patent: 4678130 (1987-07-01), Martenas
McClure John R.
Waldrop T. William
Eley Timothy V.
Marquette Darrell F.
Miller Larry W.
New Holland Inc.
Seemar Frank A.
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