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 60
the sharp edges of the types. But in our system the free platen is drawn to the form without the slightest restraint, in parallel lines, through a space of from ys to % inch, like the cross-head of an engine in its slides, and the result is theoretically perfect impact over the entire surface of… … Thus, it rarely happens that the actual center of pressure coincides with the center of the connecting rods, and whenever this condition is found, then there is a difference of pressure to be resisted by the structure. AN EXCEEDINGLY IMPORTANT PRINCIPLE Whenever it is possible, pressmen ought to…
John Thomson Press Company · Platen presses
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
