About the year 1800, Earl Stanhope contrived a press which obtained much notoriety. It was constructed of iron, and of a size sufficient to print the whole surface of a sheet, and such a combined action of levers was applied to the screw as to make the pull a great deal less laborious to the pressman.
COLUMBIAN PRESS.
The Stanhope press, however, was soon surpassed by the Columbian press, invented by George Clymer, of Philadelphia. Mr. Clymer, as early as 1797, endeavoured to improve the common wooden press. His next efforts were directed to the production of an iron press, till finally eminent success was the result of his labours. In beauty, durability, and power, as well as facility of pull, the Columbian press stands perhaps unsurpassed. The power in this press is procured by a long bar or handle acting upon a combination of exceedingly powerful levers above the platen; the return of the handle or levers being effected by means of counterpoises or weights. The powerful command which the leverage enables the workman to exercise is favourable to delicacy and exactness of printing,—his arm feeling, as it were, through the series of levers to the very face of the types. The inventor removed to England in 1817, and introduced the press there, where it has long been held in high estimation.
WASHINGTON PRESS.
In the United States, presses of simpler construction have displaced the imposing Columbian press,—the first of which was invented by Peter Smith, of New York, and the latest is Samuel Rust’s Washington press, which has secured general approbation and adoption, as being more simple and cheaper, if not more effective, than the Columbian press. Hand-presses are now restricted to country papers of small circulation, and to book-offices devoted to extra fine printing.
The bed-and-platen power-press invented by Isaac Adams, of Boston, was for a considerable time the only machine-press capable of producing fine work and exact register. It will give from six to eight thousand impressions per day. As the platen rolls off and leaves the bed entirely exposed, forms can be made ready with great facility. The sheets are taken from the feed-board by fingers, and, after being printed, are laid in a pile by a self-acting sheet-flyer.
The Cylinder press, which may be run at a much higher rate of speed than the bed-and-platen machine, was of earlier invention. Frederick König, a Saxon, early in the present century turned his attention to cylinder printing, and was so successful that on November 28, 1814, the London Times announced the fact that the number issued on that day had been printed by machinery propelled by steam. The earliest suggestion of a cylinder press is due, however, to William Nicholson, of England, who, in 1790 took out a patent for such a machine, but it was never perfected. According to Mr. Isaiah Thomas, a Dr. Kinsley, of Connecticut, afterward produced a press varying somewhat from Nicholson’s.
