US 5,852,924 AGranted

Method and apparatus for making a tapered line from thread and an improved tapered line

AssigneeCharles Raymond Downey

InventorDavid Charles Mulligan

Life of this patent

Estimating the term…

Loading patent…

Abstract

Thread is wound between spin hooks (20) and anchor hooks (26) and around loop-pins (TP, BP) to form two thread groups, one extending between a first spin hook (20) and the anchor hook (26) and the other extending between the anchor hook (26) and the second spin hook (20). The spin hooks (20) are both rotated in the same direction, at the same speed, for separately twisting the two thread groups. Then, the two separately wound thread groups are moved laterally together and allowed to unwind and at the same time wind together in the opposite direction, to form a single fly fishing leader, or the like. The thread is wound to form twelve thread strands in a butt section of the leader, ten thread strands in a mid-section of the leader and eight thread strands in a tip section of the leader (FIG. 11). As a result, the leader that is formed tapers from the butt end to the tip end.

Claims19

Dependent claims

Apparatus for making a tapered line from thread, comprising:

a base;
a spin hook support on said base;
at least one pair of adjacent spin hooks on said spin hook support, mounted for rotation about parallel, generally horizontal axes;
a drive mechanism connected to rotate the at least two spin hooks for simultaneous, and substantially same-direction, same-rate rotation;
an anchor hook support on said base spaced longitudinally from the spin hook support;
an anchor hook on said anchor hook support, mounted for rotation about an axis that is parallel to the axes of rotation of the two spin hooks;
said anchor hook facing the two spin hooks, and said spin hooks and said anchor hook forming the three corners of a triangle;
a releasable lock for locking the anchor hook against rotation relative to the anchor hook support, said lock having a lock position in which it engages the anchor hook and holds it against rotation, and a release position in which it allows the anchor hook to rotate freely about its axis of rotation;
at least two loop-pin supports, wherein a first loop-pin support base is connected to the base and spaced longitudinally from the spin hook support towards the anchor hook support, and a second loop-pin support is connected to said base and positioned longitudinally between the spin hook support and the first loop-pin support;
a first thread engaging loop-pin;
a second thread engaging loop-pin;
said first thread engaging loop-pin being removably mounted on the first loop-pin support, generally in line between a first of said pair of spin hooks and the anchor hook;
said second thread engaging loop-pin being removably mounted on the second loop-pin support, generally in line between the second spin hook and the anchor hook;
said anchor hook support being mounted on the base for longitudinal movement towards and away from the spin hook support;
and
a spring connected to the base and the anchor hook support and positioned to in use exert a resilient force on the anchor hook support, for biasing it away from the spin hook support, said anchor hook support being movable on said base longitudinally towards the spin hook support, against the force of said spring.

13 more elements

A method of making a tapered line from thread, comprising:

providing a pair of spin hooks;
positioning said spin hooks side-by-side, but spaced apart laterally and directed in a common direction;
mounting said spin hooks against longitudinal movement, but for rotation about parallel, horizontal axis;
providing an anchor hook;
positioning the anchor hook longitudinally away from, but directed towards the spin hooks;
mounting said anchor hook for guided longitudinal movement and for free rotation about a horizontal axis which is parallel to the axes of rotation of the spin hooks;
providing a first loop-pin;
mounting said first loop-pin in a fixed position longitudinally between a first of said spin hooks and the anchor hook;
providing a second loop-pin;
mounting said second loop-pin in a fixed position longitudinally between a second of said spin hooks and the anchor hook, and spaced longitudinally from the first loop-pin;
stringing thread back and forth between the spin hooks and the anchor hook and around the loop-pins, to form a first thread group extending between the first spin hook and the anchor hook, and around the first loop-pin, and a second thread group extending between the second spin hook and the anchor hook and around the second loop-pin, said first thread group including interconnected loops of thread joined at the first loop-pin, said second thread group including interconnected loops of thread joined at the second loop-pin, and said thread groups providing a first number of thread strands in the thread extent between the spin hooks and the loop-pin closest to the spin hooks, a second, smaller number of thread strands in the thread extent between the two loop-pins, and a third, yet smaller number of thread strands in the thread extend between the loop-pin closest to the anchor hook and the anchor hook;
following the stringing, removing said loop-pins;
applying a spring force to the anchor hook to bias the anchor hook away from the spin hooks and tension the thread;
separately twisting the two thread groups in the same direction to separately twist the two thread groups, and cause the thread groups to be shortened by the twisting and to pull on the anchor hook and move it towards the spin hooks in opposition to the spring force;
following the separate twisting of the two thread groups, bringing the two thread groups laterally together while maintaining tension and allowing the anchor hook to spin so that the two thread groups will twist and wind together into a single line;
securing the twisted thread strands together at the anchor hook end of the line, to hold the twist;
forming an end loop at the anchor hook end of the line;
securing the twisted thread strands together at the spin hook end of the line, to prevent unwinding;
and
forming an end loop at said spin hook end of the line.

17 more elements

Dependencies are inferred from the claim text.