Tightline logging system

Details Tightline logging system Tightline logging system

1975-02-18

1977-02-01

Spar, Robert J.

Traversing hoists

Overhead

Cable

212 87, 2541391, B66C 1706

Patent

active

040057798

ABSTRACT:
A carriage carrying a match block moves away from a slider by gravity along a tightline from a mast of the slider, and is pulled back to the slider with a turn of logs by a mobile mainline unit of a skidder. The tightline then is lower the carriage, and the mainline may be freed from the block to permit the mainline unit to move the logs to a loading station or the turn of logs may be detached from the mainline and the operation repeated.

REFERENCES:
patent: 2382049 (1945-08-01), Frankhouser
patent: 2491069 (1949-12-01), Anderson et al.
patent: 3033526 (1962-05-01), Priest
patent: 3083839 (1963-04-01), McIntyre
patent: 3094222 (1963-06-01), McAllister
patent: 3201091 (1965-08-01), Woolslayer et al.
patent: 3237353 (1966-03-01), Gilmore
patent: 3247933 (1966-04-01), Hanna
patent: 3850304 (1974-11-01), Howell

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