This patent model demonstrates an invention for a platen printing press which was granted patent number 215459. This patent describes the means of giving the proper dwell to the platen at each end of its stroke. Patentee John Jones developed many successful platen jobbers including the Star, Washington, Jones-Gordon, Clipper, and Jewel, as well as the patents to cover them. Jones had patented a "domestic printing machine," or typewriter (Pat. 14919, 1856), and his hand stamp, before he became involved with platen jobbers.
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