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Made by Julius Ortlieb & Cie. Werkzeug-und Maschinefabrik of Esslingen-Mettingen in Germany from the 1950s until the 1970s, these two specialised machines were listed as the OBD52 chamfer grinder and the OBS die grinder. 'Anschnitt' the chamfer or lead (the tapered edge before a thread or cutting edge); 'schleifmaschine' a grinding machine; 'Schneideisen' as in threading die, and 'Schneideisen-Schleifmaschine' a die grinding machine. The Ortlieb Company was founded in 1911 in Esslingen-Mettingen and was led by its owner, Julius Ortlieb (1902-1991). In post-WW2 records, the firm was listed as "Ortlieb, Julius, Werkzeug- und Maschinenfabrik, Esslingen-Mettingen," and concentrated on precision work holding and tool-holding equipment, especially collets and chucks. In 1965, they introduced a new form of collet, the Rubber-Flex RFC multi-range type of an ingenious rubber-bonded, steel-segment design. This might have been an attempt to circumvent the English Crawford-Burned Multi-size collet patent that allowed inch, metric, slightly oversize, and slightly undersize barstock to be held. However, while the Ortlieb collet was limited to an adjustment of ±1 mm, the all-metal (and still available) Burnerd has a gripping range of 3 mm, with an extended range of 2.5 mm above and below each nominal size, for a total range of 3.7 mm per collet. From its introduction, the Burnerd was available with either key or quick-action lever operation and with several different mounting options. In 1967, Ortlieb was to produce another type of collet, the QUADRO, this being available in quick-action lever-operated and dead-length variants. Today, in 2025, the Company is ORTLIEB Präzisionssysteme GmbH & Co. KG, a machine-technology company that still makes collets, chucks, and linear-motion products..
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