Variable length line fastening device

Claim 1

An adjustable line device comprising: a block, a through axial passage in said block which tapers from a larger opening at one end to a smaller opening at the other end; an elongated slot extending across the block intermediate its ends, said slot lying at an angle to the passage and intersecting the same, said slot starting about centrally of the passage adjacent the larger opening and gradually approaching the wall of the passage at a point that is narrower; a cord doubled and located in the tapering through passage, the two ends of the cord extending out of the tapering passage at the larger opening and the doubled part of the cord extending out of the tapering passage at its smaller opening; a locking cross rod extending through the slot and across the tapering passage, the cord passing the rod with one end portion of the cord at each side of the rod, the locking rod being capable of manual manipulation along the slot to engage and compress one end portion only of the cord doubled in the passage, said cross rod locking and releasing this end of the cord; means to engage an object at the end of the cord which is free of the locking rod; and a rigid ringlike structure through which the cord passes at the point of doubling and against which the block compresses the doubled cord upon pressure being applied thereto.