The production of yarn required something more than spinning. The fibres in the massed cotton or wool, as delivered to the manufacturer, must be opened, untangled, straightened out, and laid parallel by a series of preparing machines prior to being spun, among which the carding engine ranks first. In the incipient form, this machine dates as far back as the middle of the eighteenth century, when, by hand manipulation, two cylinders covered with small teeth and working in close proximity disintegrated the fibrous mass; but the fibres were much broken and not evenly arranged. The addition of the workers and strippers around a rapidly revolving swift gave increased utility to the machine, and Bramwell’s feed, in 1871, so regulated the amount of fibre fed at intervals that the resulting lap possessed the desired even character. This feed weighs the fibre as it is fed, stops the lifting apron while the scale pan dumps its load, resets the scale pan, and automatically starts the lifting apron to again feed the scale,—a cycle of operations indicating a near approach to human intelligence. One additional machine at least, the comb, requires notice before passing to the all-important progress made in the loom structure. With advancing civilization and refinement came demands for superior fabrics, which could only be answered by a supply of better fibre. Such fibre could only be secured from the bale by separating the long from the short, a problem well calculated to tax the ingenuity of an enlightened age. Attempts had been made to do this by hand implements not unlike the curry-comb of to-day, except that the teeth were long and tapering. This remained the only means employed for years, while other textile machinery passed through its phenomenal period of development. At last, in 1841, it occurred to Heilman, while watching a lady comb her hair, that a machine might be constructed to comb wool by drawing a bunch of fibres over pins. He constructed a device on this principle, and in a developed form it is used still and known as the Heilman or nip comb. [Illustration: NOBLE COMB OF 1890.] In 1853, James Noble gave to the world the circle comb, wherein two flat circular rings, having projecting from one face vertical pins, were mounted, one eccentrically within the other, and revolved in the same direction, the object being to dab the fibre on the rings where they met; and then as they revolved and separated the short fibre would be drawn off the large ring, leaving the long fibre freed from the short. These machines were successful, and above all they were practical—the operation of the hand comber disappeared from the face of the earth.