Multiple cut feller

Details Multiple cut feller Multiple cut feller

1975-05-12

1976-11-02

Simpson, Othell M.

Woodworking

Special-work machine

Combined

56327A, 83368, 144 34E, A01G 2308, B26D 502

Patent

active

039890740

ABSTRACT:
An automatic tree felling machine is provided. In one embodiment, the machine consists of a self-propelled vehicle having a plurality of automatically operated felling heads, a grapple bunk for skidding felled trees and a plurality of transfer grapples for transferring trees from the felling heads to the bunk. Each felling head is mounted on a transversely extending felling head track that also serves as a sensing means. As the vehicle moves forwardly, the felling head tracks are contacted by trees, causing the tracks to retract towards the machine. As each track retracts, the associated felling head is actuated to travel in a horizontal direction along the track towards the tree engaged with the track while simultaneously travelling downward. Subsequently, the tree contacts a control arm in the felling head which then descends vertically to the stump and fells the tree. The felling head then retracts to its original position where a transfer grapple lifts the tree from the felling head and deposits it on the skidding bunk. Also disclosed are two embodiments employing single felling heads and delimbers. In one of these embodiments, the sensing means is photoelectric.

REFERENCES:
patent: 2709330 (1955-05-01), Lafferty et al.

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