Magnet wire wrapping bit

Details Magnet wire wrapping bit Magnet wire wrapping bit

1983-05-02

1984-08-28

Larson, Lowell A.

Wireworking

Implements

Coiling

242 717, B21F 300

Patent

active

044678428

ABSTRACT:
A device for stripping insulation from magnet wire and wrapping the stripped wire around a terminal in a series of helical convolutions is described. The device includes the normal rotatable wrapping bit having a wire receiving groove disposed on the periphery of the bit, this groove being radially offset from a terminal receiving bore in the bit. The device includes a fixed sleeve surrounding the bit with a wire receiving slot extending outwardly therefrom. It has a hooked shaped insulation stripping edge positioned transversely of the wire path and being radially positioned inwardly from the groove. The stripping edge is angularly positioned between the groove and the wire receiving slot, this angular position controlling the tension of the magnet wire as it moves over the hook, this tension being sufficiently great to create a concentrated force at the junction between the insulation and the gripping edge so as to strip a limited portion of the insulation from the inner surface of the wire which is to be placed over the terminal by the wrapping tool, this stripping and wrapping taking place essentially simultaneously. The device is particularly adapted for stripping tenacious film insulation from magnet wire.

REFERENCES:
patent: 3781932 (1974-01-01), Baker et al.
patent: 3967661 (1976-07-01), Scoville et al.
patent: 4051875 (1977-10-01), Baker et al.
patent: 4327781 (1982-05-01), Zach

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