Northern Telecom Limited

Marc Seguin

Andre Dumoulin

Jean Bouffard

Making a cable core unit in which pairs of twisted conductors are formed upon individual twisting machines, the twisted conductor pairs then fed `in-line` to a core forming device by passing the pairs through a tension reducing means which reduces tension in each pair while allowing the lengths of the pairs to be different from pair-to-pair as they move into the core forming device. Built-in tensions and twisted core units are thus avoided. Also provided is a tension equalizing device which averages out the tensions between conductor pairs.

Forming cable core units

Twisting machine with a guide pulley for filamentary material and which is rotatable about its own axis and about a second axis causing air to impinge on one of the pulley sides. Impeller surfaces extend inwardly from the pulley rim to axis in rotating the pulley because of air impingement. Conveniently, the impeller surfaces are formed on spokes of the pulley.

Growing community of inventors

Ile Perrot, Canada

Marc Seguin