Walter rotary printing pres at The Times, 1868.
© Science Museum / Science & Society Picture Library
Diorama model. John Walter III, proprietor of The Times in the mid-19th century, was constantly seeking ways to improve productivity. With the repeal of the British paper tax in 1860, it became posible to consider a pres fed from a continuous reel of paper. After six years' effort perfecting the necesary curved plates, work began on this machine, the precursor of all modern newspaper preses. It printed the paper on both sides, cut it into sheets and produced 12,000 double-sided sheets an hour.