Lifting and crushing apparatus for tree stumps
OwnerOlli Pallariinventor
Life of this patent
Estimating the term…
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.
Claims10
A stump lifting and crushing means adapted to be mounted to an end of a manipulatable boom comprising a bit pivotally closable with a counter bit for crushing stumps therebetween, said bit and counter bit including an elongate narrow cutting surface and an aligned counter surface which cooperate to crush said stumps, said counter surface being substantially continuous and extending transversely across the width of the cutting surface upon closing pivotal movement of said bit and counter bit, said stump lifting and crushing means also including closure stop means for preventing destructive engagement of said cutting surface and counter surface upon closure of said bit and counter bit.
A method of removing a rooted tree stump from the ground using a powered stump lifting and crushing apparatus including a housing having a substantially continuous end wall extending to a bifurcated forward portion including spaced hooks projecting away from an intermediately disposed counter bit and an opposed bit arranged for pivotally closing movement with said counter bit comprising the steps of pivotally opening said counter bit and bit, engaging said tree stump with said hooks and positioning said end wall against the ground adjacent the tree stump with said tree stump extending between said counter bit and bit, and prying the tree stump from the ground using said end wall as a support base working against the ground and pivotally closing said counter bit and bit to cut and crush said tree stump to facilitate stump removal.
Dependencies are inferred from the claim text.