Not on a Haenel, but on Mannlichers, Mannlicher – Schoenauers, all sorts of break-open guns and even some early pistols. From 1900 to 1910 Joseph Tambour patented countless such safety contraptions for all sorts of firearms. Until 1905 his address was given as Vienna, Austria, later as Nanterre, France. Often he patented his grip safeties together with Franz Neuber, a gunmaker from Wiener Neustadt, Austria. Neuber built many custom rifles on altered Mannlicher actions, often styled like earlier alpine Ischler Stutzen. Most likely all such Tambour safeties were installed by Neuber as he held the patents.