| 摘要 |
A hollow cylindrical body is provided including a pair of relatively thin flexibly resilient transverse discs mounted therein. The discs include central openings and include radial slits therein spaced about the openings and extending outward toward outer marginal portions of the discs. An annular wedge is mounted within the body and engageable against the inwardly tapering finger portions of one of the discs defined between the slits therein for laterally deflecting the inner end portions of those fingers, as well as the fingers of the adjacent disc, longitudinally of the body to thus increase the diameter of the sight window defined between the radial inner ends of the fingers, the slits formed in each disc being spaced between the slits formed in the other disc. Further, the body includes opposite outerside diagonal grooves therein for receiving the two lateral halves of an untwisted portion of a bow string therein as well as an outer circumferential groove intersecting with the longitudinal mid-portions of the diagonal grooves and in which a circumferentially extending wrap may be secured for tightly clamping the bow string halves to the body.
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