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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 Singer Featherweight is a model series of lockstitch domestic sewing machines produced by the Singer Manufacturing Company from 1933 to 1968, [1] significant among sewing machines for their continuing popularity, active use by quilters and high collector's value. [2] [3] [4]
Chain stitch was the stitch used by early sewing machines; however, as it is easily unravelled from fabric, this was soon replaced with the more secure lockstitch.This ease of unraveling of the single-thread chain stitch, more specifically known as ISO 4915:1991 stitch 101, continues to be exploited for industrial purposes in the closure of bags for bulk products.
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 ...
Schiffli machines evolved from, and eventually replaced manually operated "hand embroidery" machines. The hand embroidery machine used double ended needles and passed the needles completely through the fabric. Each needle had a single, continuous thread. Whereas the schiffli machine used a lock stitch, the same technique used by the sewing ...
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.