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 the brothers' initials and appeared on an engine of 1.25hp, 136cc. It was possibly meant for a bicycle attachment, with belt drive to the rear wheel. Following that, nothing more was heard of the firm for some time.
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.
1923 The above models must have over-stretched the company, as for that year there were just the two 348cc models, with all all-chain drive.