* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *  The 'single revolution' concept was invented and patented in 1814 by Koenig and Bauer whilst working in England. The impression cylinder continually rotated and had a circumference twice the length of the bed, but less than half of the cylinder actually printed, the other being undercut to allow the forme to pass underneath it on the return stroke. Others subsequently copied and made improvements, notably Cowper (1816 ), Applegath (1818), Napier (1828), who added 'grippers' for conveyance of the sheet around the cylinder and sheet guides (lays) for accurate registration. Robt. Hoe, was the first to manufacture in the USA about 1830.
These presses were very popular world-wide and were still being manufactured in Europe well into the 1920's.

Photo courtesy of  Herwig Kempenaers.

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