Apparatus for producing parallel wire strands for bridges and th

Details Apparatus for producing parallel wire strands for bridges and th Apparatus for producing parallel wire strands for bridges and th

1975-11-12

1978-10-03

Sipos, John

Metal working

Method of mechanical manufacture

Magnetically shaping

14 22, 29423, 29458, 29780, 29820, 242 54R, 242 774, B23P 1102

Patent

active

041175824

ABSTRACT:
Process for winding and unwinding a parallel wire strand consisting of a multiplicity of individual wires onto and from a cable drum, and apparatus for performing such process. In the winding process, the parallel wire strand which is supplied in generally circular cross-sectional shape is fanned out so as to form a layer or layers of individual wires disposed in generally parallel position. The lead ends of the wires are anchored and such anchored end is mounted in a support therefor in the interior of the drum in such a manner that the subsequent winding of the individual wires in layers on the drum is without tension. In the unwinding operation, the individual wires are reformed into such circular cross-sectional strand shape at the bridge construction site, with corrosion-preventing material being applied to the individual wires during such unwinding, and a tubular casing of metal or plastic subsequently formed around the wires for sealing the same.
In a further embodiment of the invention, the encased circular wire strand is wound simultaneously on a pair of cable drums so as to compensate for differences in length between the wires positioned on the outside and those wires positioned on the inside so as to avoid tension in the wires.

REFERENCES:
patent: 1186027 (1916-06-01), Olson
patent: 2258139 (1941-10-01), Johnston, Jr.
patent: 2678863 (1954-05-01), Atkinson et al.
patent: 3154908 (1964-11-01), Cilker et al.
patent: 3659633 (1972-05-01), Durkee et al.
patent: 3681911 (1972-08-01), Humphries

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