Wire tying power tool

Details Wire tying power tool Wire tying power tool

1981-03-05

1982-12-07

Husar, Francis S.

Wireworking

Applying wire

Binder tightening and joining implements

140118, 140119, B21F 700, B21F 902, B21F 1100, B21F 2300

Patent

active

043621929

ABSTRACT:
In a power tool for binding concrete-reinforcing bars together with a wire tie, a predetermined length of wire is fed into a pair of jaws having loop-forming grooves therein. A rotatable inner mandrel carries a cutter bar while an outer mandrel is rotatably mounted on the inner mandrel. Radial flanges on the outer mandrel form openings with the cutter bar for the passage of the wire as it is formed into a loop by the jaws. Relative rotation of the inner mandrel relative to the outer mandrel cuts the wire and then twists the cut ends into a wire tie that binds the reinforcing bar. Controls are provided for properly positioning the openings for the passage of the wire upon each successive cycle of operation.

REFERENCES:
patent: 3091264 (1963-05-01), Stanford
patent: 3391715 (1968-07-01), Thompson
patent: 3587668 (1971-06-01), Ward
patent: 3593759 (1971-07-01), Wooge
patent: 3880204 (1975-04-01), Sarff et al.
patent: 4117872 (1978-10-01), Gott et al.
patent: 4252157 (1981-02-01), Ohnishi

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