Method and apparatus for manufacturing transposed ribbon cable and electromagnetic device
AssigneePhelps Dodge Industries, Inc.
InventorJessie H. Coon
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Abstract
Improved method and apparatus for manufacturing transposed ribbon cable, an improved ribbon cable in which a plurality of insulated wires are juxtaposed in fixed relationship to each other, and an improved transposed ribbon cable in which each conductor of the cable of the invention is in the form of a continuous helix. The transposed ribbon cable is manufactured by the method and apparatus of the invention by folding a ribbon cable angularly with respect to the longitudinal axis repeatedly while advancing the ribbon cable incrementally.
Claims41
An apparatus for manufacturing folded transposed ribbon cable comprising a folding table with an upwardly facing generally planar folding surface,
- said surface being divided into a stationary portion and a movable portion,
- said movable portion being hingedly movable with respect to said stationary portion about an axis of rotation located in said folding surface from a first position in which said folding surface of said movable portion forms a continuation of said folding surface of said stationary portion to a second position in which said movable portion overlays said stationary portion, a ribbon cable source from which a ribbon cable can be incrementally advanced,
- said ribbon cable having at least one elongated conductor extending longitudinally of said cable with the axis of said conductor and said cable being generally parallel to each other and angularly of said axis of rotation, and a folder having a straight folding edge,
- said folder being movable from a position in which said folder is superimposed on said folding surface of said stationary portion with said folding edge and said axis defining a common plane to a position remote therefrom, and a control which actuates said ribbon cable source and said movable portion and folder in sequence.
A method of transposing ribbon cable comprising the steps of advancing a ribbon cable angularly of a straight folding edge, said ribbon cable having at least one elongated conductor extending longitudinally of said cable with the axes of said conductors and said cable being generally parallel, positioning said ribbon cable on said straight edge angularly with respect to said straight edge, folding said ribbon cable about said straight edge as as to position a portion of said folded ribbon cable over a portion of said unfolded ribbon cable and to position the axis of said folded portion generally parallel to said straight edge, repeating said advancing, positioning and folding steps over and over again, the resulting folds defining the opposite boundaries of a transposed ribbon cable.
Dependencies are inferred from the claim text.