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HB were motorcycles produced from 1910 to 1923 by Hill Brothers (of Wolverhampton) of Walsall Street, Wolverhampton.
1910 The first machine was listed. HB stood for Hill Brothers, who were Walter, Tom and Ronald, and appeared on an engine of 1.25hp, 136cc. It was possibly meant for a bicycle attachment, with belt drive to the rear wheel.
1920 After the end of World War I, a conventional 348cc single was listed with a two-speed Burman gearbox and chain-cum-belt drive.
1921 The single was joined by a 499cc, three-speed version.
1922 A 550cc model and also one fitted with a 248cc ohv Blackburne engine appeared. In total they offered five different models
1923 The multitude of models over-stretched the company, as for that year there were just the two 348cc models, with all all-chain drive but all production came to an end later in the year