"To William Henry Kitchen, of High Street, in the Parish of St. Giles, Bloomsbury, in the county of Middlesex, Ironmonger, and Andrew Smith, late of York Terrace, in the Parish of St. Margaret, in the City of Westminster ; but now of Princes Street, Leicester Square, in the same City, Merchant, for their Discovery or Invention of certain Improvements in the construction of Window-frames, Sashes, or Casements, Shutters, and Doors, designed to afford security against burglars, as well as to exclude the weather.--[Sealed 7th Feb. 1829.]" English Patents of Inventions, Specifications, Volumes 5755-5800 AD 1929 No 5770
These improvements were initially shared with Thomas Don his business partner in 1827.
"PORTABLE IMPROVED WARM BATH The fire for raising the water to its proper temperature is put into the Bath on the principle of consuming its own smoke, and will warm the room at the same time, and will heat the Bath, in 15 minutes, inhaling the vapour arising from the warm water. — Price 91, 9-. One can be seen always in action, at the inventor's, J. WRIGHT, Smith and Engineer, 69, Princes - street, Leicester-square. Also his improved Garden Engine and Shower Bath, Vapour Baths, & Spring Hinges for swing doors."(Morning Post - Friday 20th April 1827).