The Tottenham outrage of 23 January 1909 was a theft of wages from the Schnurmann rubber factory in Tottenham, North London, followed by a two-hour, six-mile (10 km) police chase. The armed robbers, Paul Helfeld and Jacob Lepidus, killed themselves at the end of the pursuit. The bravery of the police led to the creation of the King's Police Medal, awarded to several of those involved in the pursuit. A joint funeral for the two shooting victims—Police Constable William Tyler and Ralph Joscelyne, a ten-year-old boy—was attended by a crowd of up to half a million mourners, including 2,000 policemen. The deaths exacerbated ill feelings towards immigrants in London, and much of the press coverage was anti-Semitic in nature; Helfeld and Lepidus were Jewish Latvian Socialists. Public sentiment was further inflamed the following year after another criminal act by Latvian immigrants, culminating in the Siege of Sidney Street, in which three policemen were murdered. (Full article...)
Hyperglide is the name given by cycling component manufacturer Shimano to a sprocket design in their bicycle derailleur tooth cassette systems. The design improves on their earlier Uniglide design (which used beveled/twisted gear teeth instead of ramps), and was introduced as part of a commercially viable index shifting system. The individual sprockets on a Hyperglide cassette or freewheel are designed specifically to work with their neighbours. In order to ensure alignment of each sprocket with its neighbour, the freehub has a narrow spline at one position, and each sprocket has a corresponding wide tooth on its inside face.
Photograph: Petar Milošević