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 13
he bed and the platen. In earlier practice the failure to provide this protection had been the cause of numerous break-downs. The lower clamp may be drawn up clear of the frisket fingers, that the tympan may be conveniently inserted. With these clamps it is practicable to draw a tympan as tight as… … positively controlling the platen
John Thomson Press Company · Platen presses
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
