how a sewing machine works

The English cabinetmaker Thomas Saint received the first patent for a sewing machine in 1790. Elias Howe, credited as the inventor of the sewing machine, designed and patented his creation in 1846. Howe was employed at a machine shop in Boston and was trying to support his family. A friend helped him financially while he perfected his invention, which also produced a lock stitch by using an eye-pointed needle and a bobbin that carried the second thread.

Here is an amazing animation, after the jump, as to how sewing machines work.

Howe tried to market his machine in England, but, while he was overseas, others copied his invention. When he returned in 1849, he was again backed financially while he sued the other companies for patent infringement. By 1854, he had won the suits, thus also establishing the sewing machine as a landmark device in the evolution of patent law.

Chief among Howe’s competitors was Isaac M. Singer, an inventor, actor, and mechanic who modified a poor design developed by others and obtained his own patent in 1851. His design featured an overhanging arm that positioned the needle over a flat table so the cloth could be worked under the bar in any direction. So many patents for assorted features of sewing machines had been issued by the early 1850s that a “patent pool” was established by four manufacturers so the rights of the pooled patents could be purchased. Howe benefited from this by earning royalties on his patents; Singer, in partnership with Edward Clark, merged the best of the pooled inventions and became the largest producer of sewing machines in the world by 1860. Massive orders for Civil War uniforms created a huge demand for the machines in the 1860s, and the patent pool made Howe and Singer the first millionaire inventors in the world.

Improvements to the sewing machine continued into the 1850s. Allen B. Wilson, an American cabinetmaker, devised two significant features, the rotary hook shuttle and four-motion (up, down, back, and forward) feed of fabric through the machine. Singer modified his invention until his death in 1875 and obtained many other patents for improvements and new features. As Howe revolutionized the patent world, Singer made great strides in merchandising. Through installment purchase plans, credit, a repair service, and a trade-in policy, Singer introduced the sewing machine to many homes and established sales techniques that were adopted by salesmen from other industries.

The sewing machine changed the face of industry by creating the new field of ready-to-wear clothing. Improvements to the carpeting industry, bookbinding, the boot and shoe trade, hosiery manufacture, and upholstery and furniture making multiplied with the application of the industrial sewing machine. Industrial machines used the swing-needle or zigzag stitch before 1900, although it took many years for this stitch to be adapted to the home machine. Electric sewing machines were first introduced by Singer in 1889. Modern electronic devices use computer technology to create buttonholes, embroidery, overcast seams, blind stitching, and an array of decorative stitches.

http://www.impactlab.com/2008/03/19/how-a-sewing-machine-works/