US 5,987,724 AGranted

Crossbow bolt cap and fletching nock device and method

OwnerJohn Klemaninventor

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Abstract

A device and method for adapting an arrow bolt fletching tool for use in fletching crossbow arrow bolts. The invention is designed to facilitate fletching crossbow arrow bolts, which are shot without nocks, utilizing a commercially available fletching tool which is designed and produced for use in fletching arrows having nocks which remain with the arrow and are shot with it. The invention provides for an end cap, containing a specially shaped indentation, to be placed in the end of the crossbow arrow bolt. A special fletching nock, with an end configured to fit within the indentation of the end cap, is inserted within the end cap for purposes of fletching the arrow only and is then removed. The fletching nock has a forked, or u-shaped, end, which engages the fletching tool in the same manner as a standard arrow nock.

Claims8

Dependent claims

A method of adapting an arrow bolt fletching tool having a rotating arrow bolt indexer for use in fletching a hollow cylindrical crossbow arrow bolt having an interior diameter and exterior diameter, said method including the steps of:

A. providing a bolt cap member comprising:
a bolt end having an exterior diameter sufficient to permit insertion of said bolt end into said arrow bolt in a male-female relationship;
and a fletching nock end having a diameter equal to the exterior diameter of said arrow bolt, said fletching nock end having a planar surface perpendicular to the longitudinal axis of said arrow bolt, and a polygonal aperture defined in said planar face and centrally aligned with the longitudinal axis of the arrow bolt;
B. providing a fletching nock member having a bolt cap end with a polygonal, male member defined thereupon, said male member being configured to be removeably insertable into said polygonal aperture;
said fletching nock member further including a fletching tool end having a diameter at least as great as the exterior diameter of the arrow bolt and further including a pair of members extending parallel to the longitudinal axis of the arrow bolt so as to define a slot;
C. inserting the male member of the fetching nock member into the polygonal aperture of the bolt cap;
D. engaging the rotating bolt indexer of the fletching tool with the slot defined by the pair of members of the fletching nock member;
and
E. removing the fletching nock member from the bolt cap member upon completion of fletching.

6 more elements

inserting a cylindrical bolt cap member into the cylindrical crossbow arrow bolt, said bolt cap member comprising:
a bolt end having an exterior diameter sufficient to permit insertion of said bolt end of said member within said arrow bolt in a male-female relationship and a fletching nock end having a diameter equal to the exterior diameter of said arrow bolt;
said fletching nock end having a planar surface perpendicular to the longitudinal axis of said arrow bolt;
said planar surface further defining a polygonal aperture centrally aligned with the longitudinal axis of said arrow bolt;
engaging the rotating the bolt indexer of the fletching tool utilizing a fletching nock member having a bolt cap end comprising a polygonal male member correspondingly configured to be removeably insertable within said polygonal aperture defined by the planar surface of the bolt cap and having a fletching tool end of a diameter at least as great as the exterior diameter of said arrow bolt and further comprising a pair of members extending parallel to the longitudinal axis of the arrow bolt, defining a slot, as the means for so engaging the rotating bolt indexer;
mounting the cylindrical crossbow arrow bolt onto the arrow bolt fletching tool by removeably inserting the corresponding polygonal male member comprising the bolt cap end of the fletching nock member into the corresponding polygonal aperture defined by the planar surface of the cap member inserted within the cylindrical crossbow arrow bolt, so as to provide for rotation of said arrow nock about its longitudinal axis when said bolt indexer is rotated, for fletching purposes;
and
removing said arrow bolt having an inserted cylindrical bolt cap member from the bolt end of the fletching nock member upon completion of fletching.

5 more elements

Dependencies are inferred from the claim text.