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Tightline logging system

  • US 4,005,779 A
  • Filed: 02/18/1975
  • Issued: 02/01/1977
  • Est. Priority Date: 05/22/1974
  • Status: Expired due to Term
First Claim
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1. In a tightline logging system, comprisinga vehicle slider,a vertical mast mounted on the vehicle slider,a mast sheave on the upper end of the mast,a tightline winch on the vehicle slider,a tightline extending from the winch and over the sheave and outwardly and downwardly to a ground anchor,a carriage on the tightline movable outwardly from the mast by gravity,an open block carried by the carriage,a skidder vehicle having means for detachably coupling said vehicle slider to said skidder vehicle,a mainline winch mounted on the skidder,and a mainline extending through the block from the mainline winch and adapted to be secured to a load and pull the carriage and the load toward the mast,the open block permitting the mainline to be removed laterally therefrom to permit the skidder to haul the load to a position remote from the slider.

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