Knight's first patent drawing illustrating his color printing patent.
Creative Commons LicenseJeremy Norman Collection of Images - Creative Commons
The first of two large folding plates published with Knight's patent, showing four 'lids" probably each hinged to the side of a "Ruthven press with most of its working parts removed. The platen rose from below with the paper on it, while the blocks were arranged on the lids. They were inked one at a time and successively folded down over the paten, being in position by rods actuated from a handle in the centre of each lid" (Wakeman, Victorian Colour Printing [1981] 11).
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