From 1800 onwards, the key compass never stopped expanding, resulting in keyboard instrumnets taking more place. William Southwell (London) acquired a patent in 1798 for a design where the square piano was put on its long side with the keyboard in front and an adapted action. Clementi & co also eperimented with this design and made this specific instrument around 1812. A second copy is at a museum in Stockholm. 

Technical data:

  • Inscription: New Patent CLEMENTI & Co London
  • Compass: 6 octaves (FF-f'''')
  • Keyboard: naturals in ivory, sharps in ebony
  • Pedals: 1: operating dampers
  • Dimensions: W 144 cm / D 52 cm / H 151 cm
  • Serial number: 461 and 11236
  • Chris Maene Collection number: CM 35 328
  • Location: 2 - Museum "Chris Maene Collection" Ruiselede

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