Modern Printing Machinery. (Paper World.)

Messrs R. Hoe & Co., the New York printing press manufacturers, have constructed three presses for the World, that will each print eight, ten, or twelve pages at once; the printing, cutting, inserting of the extra sheets, pasting and folding, all being done by the machine at the speed of 26,000 perfect papers an hour. No press previous to this time has been constructed which will produce printed newspapers with the supplements thus inlaid accurately and folded in at one and the same operation. These three new double machines, added to the presses already in the office, will give an aggregate of 3,000 perfect copies of the World every minute, or over 180,000 complete copies per hour, or 360,000 copies in two hours. No other office in this or any other country approaches this producing power.

The World has several new and improved Hoe presses made a year ago. One of those machines would fill an ordinary sized New York parlor. Its 5,000 separate pieces are more accurately and more intricately constructed than the works of the famous Strasburg clock, and the building of a Cunard steamship is not half so difficult. Over one hundred patents cover the mechanism of the machine, and the entire time of an army of workmen was employed for four months in Its construction. So accurately must each part be adjusted that three decimals—·001—are used in measurement, and a hair-breadth would be a coarse comparison to describe the infinitesimal measure.

An immense press was built for the New York Telegram some time ago, by R. Hoe & Co. It is the largest and most intricate press ever made. It weighs fifty tons and has a capacity of 75,000 Telegrams an hour, or 144,000 single sheets in the same time. Over 11,000 separate pieces enter into its construction, and it is as big as a cottage. Three separate plates rest upon its cylinder, and type or stereotype plates can be used indiscriminately. This company has made a press that turns out 10,000 Congressional Records per hour, and a press that prints 9,000 illustrated paper copies per hour.