Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 143,345 pages of information and 230,027 images on early companies, their products and the people who designed and built them.
of 55 Broad Street Avenue, London
of Prana Sparklet Works, Upper Edmonton
1896 Aerators Ltd was formed to market Sparklet bulbs
1900 The company was registered on 15 February, in reconstruction of a company of the same name, to carry on the manufacture of "sparklet" bulbs, bottles, syphons. The company has also placed on the market a tyre inflator for motor cars, a fire extinguisher, and alloy die-finished castings. 
1902 Works established at Edmonton, London.
WWI Production of cartridges and tracer bullets