The price of woollen Wiltons therefore had to be appreciably lower, and the qualities cut as much as they would stand. Working on this basis, however, the woollen Wiltons did justify their existence. Made mainly in 214 pitch, with three frames of yarn or less, and beaten up from 8½ to 7½ per inch, they achieved unambitious but ingenious and saleable effects, and if the cover and consequent wear was not all that could have been desired, yet they served a purpose.
But it must not be implied that the only woollen Wiltons were, or are, the cheap grades. The suitability of woollen yarn for use in a Wilton loom to produce a soft and even luxurious fabric with an Oriental effect has long been recognised; and admirable qualities have been woven in 256 and 236 pitch with four or five frames of yarn and with fairly high wires. Indeed, some of these can be regarded as more successfully imitating the Eastern carpet in texture than even the finer worsted Wiltons.
Wilton carpeting lends itself particularly well to single shade effects: plain Wiltons have been woven in a variety of qualities with both worsted and woollen yarn for many years; and, indeed, the demand has shown signs of a steady increase. For those who are content with a single colour on the floor in their scheme of furnishing, and who do not object to the sensitiveness of a plain carpet to “shading,” and, indeed, to the recording of individual footprints, no fabric is better than a plain Wilton. But it should be borne in mind that a plain carpet has that defect. Wool fibre is elastic, but not infinitely so. A plain carpet, however well and carefully woven, cannot be expected to retain its virgin smoothness and level colour for long under wear. Wear on a carpet is never evenly distributed: the feet tread down some places more than others; the pile is depressed unequally, with the result that, in a plain carpet, the light, falling at different angles upon the fibres causes light and dark patches to appear. This is called shading, and is often wrongly attributed to defective manufacture, or to the presence of some foreign substance like oil. Shading actually occurs equally in figured Wiltons; but it is rarely the subject of complaint, simply because it is concealed by the design and colours.