H. Parker (of London)
Mr. Parker, of Camberwell, invented an engine in which a mixture of air and steam, instead of steam alone, was used to produce motive power (known as the Aero-Steam engine).
By 1871 Mr Parker had died; Mr. Parker's brother, H. Parker, 22, Highbury Grange, London, (January 25th, 1871). took up the matter and patents after the death of the inventor and, during 1870, he promoted the invention energetically.[1]