Industrial notes

G-E Develops Oil, Heat-Resisting Cable. — A new cable insulated with Glyptal-treated cloth and capable of resisting oil and withstanding high temperatures has been developed by the General Electric Company and is now available in all types. In addition to its ability to resist oil and heat, this new cable is characterized by unusual flexibility and toughness that enables it to stand severe mechanical strain. The insulating material known as Glyptal is a synthetic resin, produced from phthalic anhydride and glycerine, which is unaffected by mineral oil. Because of this inherent quality, Glyptal-treated cloth has a distinct advantage over varnish-treated cloths as an insulation material. This new cloth also maintains its original properties over long periods of time, even at elevated temperatures. Samples of cable insulated with Glyptal-treated cloth have been exposed to temperatures of 100 degrees C. for periods of three to four months without showing appreciable deterioration. The new cable can be used advantageously for low- and medium-voltage leads, apparatus cable, transformer leads, leads for coils and control devices, or wherever an oil-resisting, heat-resisting cable is required.