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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * The caption to this photograph states it is named after typefounder, William Hagar, of New York, supposed inventor of this torsion-toggle mechanism for applying the impression. I think this is incorrect. Christian Dingler, a German engineer, of Zweibrucken, Germany, who adapted British and American presses, is credited with being the first to utilize this system and named his version the Hagar. The two presses are very similar though. A cast statuette of Gutenberg crowns this press whereas Dingler's cross piece is engraved with animals etc.
The mechanism consisted of two sets each (upper and lower) of inclined rods arranged in a St. Andrews or diagonal cross, the lower ends which pivoted in a round plate. By means of the impression handle, the plate was rotated, which brought the rods to an upright position and lowered the platen.
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