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Historical notice regarding the development of Type-H-Cable

In the book by Robert Black: The History of Electric Wires and Cables. Peregrinus London 1983, 290 pages, the author Black deals with the individual screening of the three cores in a belted power cable, beginning on p. 109 and high-lightening on p. 111: “In the opinion of the writer this development, the introduction of the Hochstadter screen, was the most important single contribution to the art of cable making during the first quarter of the twentieth century.” Martin Höchstädter (1883-1973) - in original German spelling with two umlauts - left a type-written English manuscript of 7 pages, titled as in the headline and signed by him in 1967 when he was 84 years of age. Höchstädter's text is published here with comments by the editor, because after 50 years MH did not correctly remember the facts. A short biography is included with a portrait photo and an explanatory drawing of three-phase cable cross sections.