Comfort Thorp, the younger brother of textile machinery inventor John Thorp, worked for Thomas and William Fletcher in their mill near North Providence. His patent improved the method of securing and holding the cop, or yarn cylinder, on the common power loom shuttle, preventing slips that would waste yarn and cause imperfections in the woven cloth.
The patent model he submitted contained two types of tongues. One used a common round tongue with wire spiraled around it. The other consisted of a tongue with ridges or notches similar to the teeth of a saw blade. The two loom shuttle tongues were neatly exhibited in a box, probably to keep them from being separated or lost in the cases at the Patent Office.
John Thorp and William G. Angell of Providence, Rhode Island
These heddles, both wire and twine, were exhibited in the Patent Office in a round wooden frame. In the patent specification, Thorp and Angell described the dimensions of heddles for use on a common power loom. A chain of the heddles was formed by taking two pieces of wire or twine and tying them with a common square knot, “which will unite them in the same way and manner that a lady ties her apron strings or a child his shoestrings.” The placement of the knots resulted in the formation of the eyes of the heddles, which raise and lower warp threads in weaving cloth.
Thorp and Angell did not include a patent drawing with the specification. The 1841 Journal of the Franklin Institute remarked of this omission: “We must suppose . . . that the description, although to us somewhat obscure, would be clear to a professional weaver.”
Temples are attachments on looms designed to keep the cloth at a uniform width during weaving. Self-acting temples required no adjustment as the cloth was woven, for they automatically adjusted their position. The greater speed obtained with power weaving made the use of self-acting temples a necessity.
The basic construction of Mason’s temples was similar to others of the period. The patented feature of his temple concerned the arrangement of the parts by which the jaws or forceps were forced open and released their hold on the cloth.
Mason patented other useful textile machinery. Notable were an 1830 speeder for roving cotton (a speeder is a machine used in cotton yarn spinning that inserts a twist to the yarn and winds it on the bobbin) and a cotton whipper (a machine that separates clumps of cotton) in 1834. James Montgomery, in his 1840 edition of “Cotton manufacture of the United States Contrasted with that of Great Britain,” wrote that he considered the whipper the best, cheapest, and simplest that he had seen in factory use over a span of thirty years.
Faber’s patent related to the construction of the common hand card used for carding cotton or wool prior to the spinning process. He specifically patented using wood veneer, instead of leather, for the foundation that contained the card’s wire teeth. The wood was cut from 1/8 to 3/16 of an inch in thickness, 4 inches in width, and 4 to 8 inches in length. The wood was then steeped in water to soften it so that when placed in a card-making machine, it could be pricked and the teeth inserted. The veneer was nailed to another piece of wood and a handle inserted to form the hand card.
Although Faber did not claim credit for inventing the card-making machine, in his patent specification he did mention that he had made improvements on it.
Sibley’s improvement concerned the arrangement of the color box, which held the coloring matter used in printing; the furnishing roll, which supplied the coloring matter to the printing roll; and the doctor, which acted as a scraper to remove any superfluous color from the cylinder. In his patent specification, Sibley stated that the advantage of his machine was “being able to work as heavy an Engraving, last as first, or second, and by which means you can place the Light, delicate colors, first and Black or Chocolate last or as you please.” His patent model shows only one engraved copper roller although the machine was designed to do three- or four-color work with multiple rollers.
Sibley recommended using flour instead of gum to thicken the coloring matter. He calculated that to print 175 pieces, it was necessary to use 42 pounds of gum senegal at 22 cents a pound, which added up to $9.24; whereas 42 pounds of flour cost only 5 cents a pound, for a sum of $2.10. That totaled up to a savings of $7.14 if the flour was used. Whether the use of flour was ever adopted is not known.
By 1836, textile mills in the United States had printed 120 million yards of calicoes. Calico printing was popular among manufacturers largely due to the fact that the printing only added one step to the finishing process and did not affect or complicate the weaving process.