Illustrated catalogue and price list of John Thomson Press Company's platen presses : for letterpress and color printing, embossing, bookcover stamping and paper-box cutting and scoring (1896)
John Thomson Press Company · New York City : J. Thomson Press Co. · leaf 14
e platen than when these ears are snubbed off short, as in competitive practice. The platen is caused to make a theoretically perfect direct slide to and from the impression, every portion of its surface moving parallel to the form through a space of nearly three-fourths of an inch, making an… … hand of the tangent of the curve, corresponding to the direct slide to the impression, that the cam and its roller shall not be subjected to excessive strain. In fact, during the impression contact of the platen, the cam roller stands in free space. Hence, the duty required of the cam is relatively…
John Thomson Press Company · Platen presses
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
