During the late 19th century, Birmingham companies such as Joseph Lucas & Sons and Powell & Hammer pioneered the production of bicycle lamps and lanterns for ships, capitalising on the advances in using acetylene gas. The Birmingham lamps were exported around the world, with the Lucas company later becoming famous for manufacturing components related to the motor industry and aerospace industry. Richard Bissell Prosser(1838–1918) writes 58 lives for the "Dictionary of National Biography", and supplies much material for the "New English Dictionary". Prosser also writes Birmingham Inventors and Inventions, 1881 and is a pioneer of the study of technical history, his published biographies and manuscript records are an incomparable source for present-day researchers. His father Richard Prosser (1804–1854), engineer and inventor, was heavily involved with the introduction of the Patent Law Amendment Act of 1852, and his 700-volume library, combined with that of Bennet Woodcroft forms the basis of the Patent Office Library.