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The geometry of the lockstitch is controlled by the presence or absence of: sideways movements of the machine's needle; backwards movements of the machine's feed dogs; In older machines, the needle and feed motion are controlled by mechanical cams. Some modern household machines offer a slot for user-replaceable custom stitch cams.
The Singer Model 27 and later model 127 were a series of lockstitch sewing machines produced by the Singer Manufacturing Company from the 1880s to the 1960s. (The 27 and the 127 were full-size versions of the Singer 28 and later model 128 which were three-quarters size). They were Singer's first sewing machines to make use of "vibrating shuttle ...
The first American lockstitch sewing machine was invented by Walter Hunt in 1832. [7] His machine used a needle with the eye and the point on the same end carrying the upper thread, and a falling shuttle carrying the lower thread. The curved needle moved through the fabric horizontally, leaving the loop as it withdrew.
The vibrating shuttle was a significant innovation towards the goal of a simple, fast, and reliable lockstitch sewing machine, and the design remained popular for decades. Indeed, even twenty-five years later, on 10 October 1910, Singer was awarded US patent 1005177 for a new shuttle-ejector mechanism for it.
Allen B. Wilson filed two important patents for Wheeler & Wilson's sewing machines: the rotating hook and the four-motion feed. [2] His first machine formed a lock stitch by means of a curved needle on a vibrating arm above the cloth plate, and a reciprocating two-pointed shuttle traveling in a curved race below the plate.
However, Howe originated significant refinements to the design concepts of his predecessors, and on September 10, 1846, he was awarded the first United States patent (U.S. patent 4,750) for a sewing machine using a lockstitch design. His machine contained the three essential features common to most modern machines: a needle with the eye at the ...
Allen Benjamin Wilson (1823–1888) was an American inventor famous for designing, building and patenting some of the first successful sewing machines. [1] He invented both the vibrating and the rotating shuttle designs which, in turns, dominated all home lockstitch sewing machines. With various partners in the 19th century he manufactured ...
Older sewing machines designed to sew only a straight stitch can be adapted to sew a zigzag by means of an attachment. The attachment replaces the machine's presser foot with its own, and draws mechanical power from the machine's needle clamp (which requires the needle clamp to have a side-facing thumbscrew). It creates a zigzag by mechanically ...