Light weight tree jack for harvesting firewood with chain saws

Details Light weight tree jack for harvesting firewood with chain saws Light weight tree jack for harvesting firewood with chain saws

1992-01-22

1992-12-29

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Apparatus for hauling or hoisting load, including driven...

254133R, B66F 1300

Patent

active

051745496

ABSTRACT:
A light weight treejack suitable for use in the woods at a tree felling site to harvest firewood, pulpwood, and the like, with a chain saw is easy to carry and set up by a single person. A bowed first legpiece is coupled at the top to a straight second legpiece comprising a hollow U-shaped pipe with an internally journalled threaded member rotatable with an upper manually operated handle to move a mating threaded rider up and down the pipe. The trees are supported by a chain about the trunk adjustable in height by the jack at a desired position along the trunk with attached branches on its treetop side aiding the jack to support the tree trunk at a comfortable level for using a chain saw without the danger of turning.

REFERENCES:
patent: 181251 (1876-08-01), Curtis
patent: 1134581 (1915-04-01), Barret
patent: 2492597 (1949-12-01), Schnadt
patent: 2707615 (1955-05-01), Green
patent: 3266773 (1966-08-01), Cole
patent: 4201375 (1980-05-01), Pierce
patent: 4304394 (1981-12-01), O'Hara et al.

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