Johannes "Hanns" Evangelist Hörbiger (29 November 1860, in Atzgersdorf – 11 October 1931, in Mauer), better known as Hanns Hörbiger, was an Austrian engineer from Vienna with roots in Tyrol. He took part in the construction of the Budapest subway and in 1894 invented a new type of valve essential for compressors still in widespread use today. He is also remembered today for his pseudoscientific Welteislehre ("World Ice doctrine"). Early life Hanns Hörbiger was born in Atzgersdorf, a suburb of Liesing, Vienna, and studied engineering at the local Technical College. In 1894 Hörbiger had an idea for a new design of blast furnace blowing engine: he replaced the old and easily damaged leather flap valves with a steel valve. Opening and closing automatically, and light and frictionless guided, the disk valve eliminated all the drawbacks of previous valve designs. Hörbiger registered a patent for his invention, which smoothed the way for efficient steel production and greater productivity in mining. High-pressure chemistry and the global network of gas exchange – none of these would be possible without the Hörbiger Valve. In 1900, Hanns Hörbiger and the engineer Friedrich Wilhelm Rogler founded an engineer’s office in Budapest, which was moved to Vienna in 1903. By 1925 it had developed into the Hörbiger & Co. company. Alfred Hörbiger, one of Hörbiger’s sons, joined the company in 1925 and assumed the management, while Hanns Hörbiger devoted himself to scientific study until his death in 1931. Two other sons, Attila and Paul became actors. The company developed rapidly under Alfred Hörbiger’s management: a production facility was taken into service in Vienna and an affiliated company was set up in Düsseldorf. Hörbiger expanded into England and concluded numerous licensing agreements with leading manufacturers of piston blowers, compressors and ships’ Diesel engines in Europe and North America. The success was driven by originality and inventive genius. The disk valve became more sophisticated: Hörbiger developed highlift or high-pressure valves, compressor control systems and damper plates. By 1937, 98% of production was destined for export. The name Hörbiger had become a dependable trademark in valve and control technology for compressors. As of 2017, the engineering company founded by Hanns Hörbiger still exists as HOERBIGER and is a major supplier of compression technology. Welteislehre Hörbiger is nowadays chiefly remembered for his Welteislehre ("World Ice Doctrine"), which he first put forward in the 1913 book, Wirbelstürme, Wetterstürze, Hagelkatastrophen und Marskanal-Verdoppelungen, written