Printing of Playing Cards :: letterpress
Some notes on the manufacture of playing cards taken from Thomas De la Rue's patent, 1831
At the time of Thomas de la Rue's landmark Royal Letters Patent for certain improvements in making or manufacturing and ornamenting playing cards in 1831, playing cards were stencil-coloured by hand in water colours or printed in one colour and then hand tinted. These processes were time-consuming, laborious and also gave rise to poor quality if the workmanship was careless or imprecise.
The main innovation which Thomas de la Rue introduced was a mechanical method of registering the colour printing so that the different coloured inks were applied with greater precision and did not overlap or be mis-placed as had been the case with stencil-colouring. In addition, quicker drying oil-inks were employed, a new method of glazing the cards by passing them between copper sheets through powerful rollers instead of the antique method of glazing by friction with a flint, and the use of enamelled paper.
The text of De la Rue's patent includes the following excerpt: Take one gallon of old linseed oil (the older the better) and boil it very slowly for three of four hours in an iron pot or vessel, occasionally igniting it and stirring during the whole process with an iron ladle. In some instances I find it necessary to dip a few slices of stale bread just prior to ebulation taking place which facilitates the operation... The manner of igniting is as follows: When it is found that by applying a light to a surface it will take fire the pot or vessel is removed from the fire... when it goes out the pot is again placed on the fire - should the ignition be too violent, it must and may be stopped by placing a cover over the top of the pot containing the oil. When cold it should be the consistency of very thick treacle..
Notes on the manufacture of playing cards taken from an article published in Bradshaw's, 1842
An article published in Bradshaw's in 1842 contained an account entitled Visit to Messrs De La Rue's Card Factory. First comes the preparation of the paper, which is subjected to pressure and brushed with white enamel to give it a highly polished finish. Then follows the printing of the playing-card fronts; these are divided into two groups, the pips, i.e the numbered cards, and the têtes, i.e. the court cards. The pips are comparatively simple to print: sets of blocks are produced, each containing forty engravings of one card, and as the ordinary method of letter press printing is employed, forty impressions of one card are obtained at the same moment. As the pips bear but one colour, black or red, they are worked together at the hand press... The printing of the court cards is more difficult since they contain five colours. The colours are printed separately and are made to fit into each other with great nicety... for this purpose a series of blocks is provided, which if united would form the figure intended to be produced. By printing successively from these blocks, the different colours fall into their proper places, and the whole process is completed. The printed fronts then go off to the drying rooms for three or four days.
The backs are printed in the same way. Thomas de la Rue's Jacquard calico method is used to produce repetitive tartan and criss-cross patterns from a single block engraved with straight lines and printed in one colour, which is afterwards crossed with the same or any other colour by again laying the sheet on the block, so that the first lines cross the second printing at any required angle.
Then the cards are given solidarity. Between the fronts and the backs are pasted two ordinary layers of paper. To be of an especially smooth quality, the paste employed is cooled by steam, even the pasting performed with a large brush in a series of systematic movements is something of a work of art. Three of four years were needed to become a master paster, who as early as 1840 could command the ample wage of £2 per week.
In quantities of four or five reams at a time the newly pasted sheets of cards are now subjected to the gradual but powerful pressure of a hydraulic press of one hundred tons, which is worked by a steam engine. Any air bubbles between the layers of pasteboard are thus expelled. Again these sheets are carefully hung up to dry to prevent their warping. More pressure is applied to flatten and polish them. If special quality is required the backs are waterproofed with varnish. Finally in order that each finished pasteboard card be of identical size, the sheets are cut into single cards with a big scissors apparatus. By laying up the cards on a long bench, a workman can make up into packs two hundred lots of cards simultaneously.
We also learn from Bradshaw's that the finest quality cards were called Moguls, the next best Harrys, and those with imperfections Highlanders. Tradition has it that the finest, the Moguls, were so called after the Mogul emperors, Harrys were kings - after Henry VIII - and the Highlanders were princes - after Bonnie Prince Charlie.
To ensure that the necessary duty - in 1840 one shilling a pack - has been paid, each ace of spades was printed in the Stamp Office at Somerset House. An account of the numbers of aces was kept there by the authorities.