| 摘要 |
A tool for use in threading an advancing strand through a hole comprising a body member, severing means carried by the body member, a yieldable guide carried by the body member, said guide being biased toward a first position in which it blocks engagement of a strand with the severing means and being movable toward a second position in which it permits engagement of the strand with the severing means, whereby a strand may be engaged with the guide so that tension in the strand tends to urge the guide toward its second position and when the tension in the strand is sufficiently high to overcome the biasing force of the guide, the latter moves to permit the strand to engage and be severed by the severing means.
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