Wireworking – Joining wire – Implements
Patent
1976-05-06
1978-02-28
Hall, Carl E.
Wireworking
Joining wire
Implements
29751, 29753, 140124, 242 717, B21F 1504
Patent
active
040760561
ABSTRACT:
A wire wrapping device for connecting an insulated electrical wire to an electrical contact pin. The device includes a wrapping sleeve and a rotatable cylindrical wrapping spindle disposed within the wrapping sleeve which has an axially-disposed aperture opening at one end thereof for receiving the contact pin and a continuous wire guiding canal disposed in the surface of the spindle. Curved, U-shaped stripping knives are disposed in the canal and open towards the surface of the spindle for receiving and cutting the insulation from the wire. Specifically, the knives define a first cutting opening having a width which corresponds to the cross-sectional dimension of the insulated electrical wire and a second cutting opening which has a width which is at least the same as the diameter of the core of the wire. The improvement of the invention comprises the disposition of the stripping knives in the wire guiding canal so that the longitudinal axes thereof are disposed at an angle ranging between about 30.degree. and about 60.degree. with respect to the tangent at the wire guiding canal on the surface of the wrapping spindle. In addition, the knives are positioned from the end face of the spindle at which the axially-disposed aperture opens by a distance which is at least several times greater than the diameter of the insulated electrical wire.
REFERENCES:
patent: 3882906 (1975-05-01), Steiner et al.
patent: 3893491 (1975-07-01), Jackson, Jr. et al.
Hall Carl E.
Siemens Aktiengesellschaft
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