The "Columbian" press, devised by George Clymer, of Philadelphia, in 1816, gained considerable distinction both in this country and in England, where it was introduced in 1818. It differed from the Stanhope in that the screw was dispensed with, the platen being depressed by a combination of levers and lifted by the aid of a weighted balance-lever.

The reduction of the hand-lever movement to its simplest and most powerful form is now seen in the Washington hand press, devised by Samuel Rust, of New York, in 1827. His patent was later purchased by R. Hoe & Co., who made nearly seven thousand of these presses in different sizes and still make many of a greatly strengthened pattern for taking fine proofs from photo-engraved plates. Some of these presses made before 1850 are still in use, and occasionally one hears of a Washington hand press being used for printing upon handmade paper an edition of a small and limited number of copies of a book. Of all the hand presses, this is the only one that has survived to the present day.

With the introduction of other means for applying power than the hand-lever, a distinction came to be drawn between printing presses and printing machines. The term "machine" might perhaps be more appropriately used for the huge printing presses of the present day, yet, as the first essential is the impression power, all other features being subordinate, the term "press" is still the proper one to apply, even to the greatest combination of printing units yet devised.

The "bed and platen" system of printing as first used in hand presses occupies such an important place in the history of the book-printing press that a further description of its career is necessary.

In December, 1806, Friedrich Koenig, a Saxon, who later gave to the world the first practical cylinder press, went from Germany to England to seek assistance in carrying out his plans for the construction of a greatly improved printing press, having failed in his efforts in his own country and in Russia. He succeeded in enlisting the support of Thomas Bensley, a London printer, and constructed a press in which all the operations but laying on and taking off of the sheet were performed mechanically.

An accurate description of this press is not extant, but it is known to have consisted of a large wooden frame, a platen worked by a vertical screw and gears, a type-bed drawn forward and backward by means of straps fastened to a large roller underneath the bed, a tympan frame and frisket arranged to open and close automatically with the movement of the bed, and an inking apparatus, consisting of an ink-box with a narrow slit in the bottom through which the ink was forced by a piston upon a roller below, from which it was transmitted by two intermediate rollers to another and lower roller which inked the form as it passed underneath. The two intermediate rollers had an alternating, lateral motion which spread or distributed the ink sideways before it reached the lowest roller.

This press was the first to have ink-distributing rollers and the first to be run by steam power. In April, 1811, the "Annual Register" for 1810 was printed on it by Mr. Bensley at the rate of eight hundred impressions an hour. Nothing further is recorded about this press, and it was probably abandoned as being too complicated.

In the following year, Koenig's first cylinder press was completed, to be followed two years later by an improved cylinder press made for the London Times, which will be referred to farther on.

In his experiments, the Earl of Stanhope had tried, without success, to find a substitute for inking-balls by making rollers covered with different kinds of skins. He also tried other materials, such as cloth, silk, etc., but the unavoidable seam and the impossibility of keeping these materials soft and pliable defeated his purpose. About 1813 inking-rollers made of a composition of glue and molasses came into general use, and this important invention was of great assistance in the further improvement of the printing press.

Other cylinder presses with mechanical inking appliances were devised and patented, the most notable of which were those of Rutt, Bacon, Cowper, Applegath, and Napier, but the mechanical imperfections of these presses unfitted them for the better grades of book printing.