Lifting and crushing apparatus for tree stumps

Woodworking – Process – Mechanical cutting or shaping

Patent

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Details

30134, 30228, 371175, 83609, 144 34E, 144335, 144 2N, E02F 328, B27C 900, B23P 1900

Patent

active

051799855

ABSTRACT:
A stump lifting and crushing device for mounting to an end of a bucket arm of a digging machine includes stump lifting hooks and a bit pivotally closable with a counter bit for crushing stumps therebetween. The bit has an elongate narrow cutting surface which cooperates with an aligned counter surface provided by the counter bit. The counter surface extends transversely across the width of the cutting surface of the bit. The closing movement of the bits is limited by the cam-like engagement of a following member of the bit with a stop member of the counter bit.

REFERENCES:
patent: 3814152 (1974-06-01), Pallari
patent: 4188721 (1980-02-01), Ramun et al.
patent: 4439921 (1984-04-01), Ramun et al.
patent: 4519135 (1985-05-01), LaBounty
patent: 4616417 (1986-10-01), Gross
patent: 4686767 (1987-08-01), Ramun et al.

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