There are some inventions that are so remarkable that we are constantly in awe of them- like rocket ships which can break from Earth's gravity and travel to the Moon. That's cool stuff. However, in the big scheme of things, these aren't necessarily the most significant inventions in our history. That honor goes to the inventions that become so ubiquitous, or widespread, as to become unremarkable. They don't just impact our lives; they redefine them to the point where we can't remember life without them. There have been several such inventions, but few were as significant as the sewing machine. With it, life went from just so-so, to sew, sew, and sew some more. more details
A sewing machine is, obviously enough, "a machine that sews," but if you think about those words literally, it can help you figure out how it works. Let's say we had a big construction set with standard, snap-together, engineering components in it; which bits would we need to make a sewing machine? The answer is surprisingly few.
Although you can still find the odd hand-powered sewing machine (and you can operate any machine slowly by hand if you want to for slow, precision work), virtually all modern sewing machines are electric: they're built around quite hefty electric motors (roughly the same size as the ones you find in vacuum cleaners and lawn mowers). Pushing a tiny little needle up and down through multiple layers of thick fabric is hard work; and lifting and feeding the fabric takes effort as well. If you've ever sewn something like a pair of curtains, you'll know it can be quite exhausting turning and moving the fabric, but a sewing machine helps you do that job as well. click here
The beating "heart" of a sewing machine is the electric motor, which is hidden inside the main stem of the machine usually quite near to the place where you plug in the power cord. The motor drives three separate mechanisms that are very carefully timed to cooperate with one another. Two of them, a mixture of cams and cranks, operate the feed dog, that little set of teeth that pop up and down just beneath the needle and the presser foot (which holds the material in place); one pushes upward against the material (to grip it) and the other moves it forward by an adjustable amount (to make stitches of varying length). It's actually a rather neat double-act: one of these mechanisms makes the feed dog go up and down, while the other slides it back and forth. Meanwhile, another crankshaft driven by the motor makes the needle rise up and down, while the fourth and final mechanism turns the shuttle and hook attached to it that makes the stitches. get details
A sewing machine is used to stitch the fabric and other pliable materials together with threads. Sewing machines were invented during the first Industrial Revolution to decrease the quantum of manual sewing done in garment industries. Since its invention, it has greatly improved the efficiency and productivity of the fabric, garment and needle industries. The different parts of a sewing machine and its functions help the Operator to know the functioning of a sewing machine. more details
There are different types of sewing machine used in the manufacturing of garments and other articles, but here in this Unit, we will study only single needle lock stitch machine.A sewing machine controls the fabric with feeding devices and forms a perfect stitch to join the fabrics. It has various parts and attachments, each of which have their own importance and use. There are mainly two categories of sewing machines that is, domestic sewing machine and industrial sewing machine.A Sewing Machine Operator should have the knowledge and skills to operate the different types of sewing machine. The Operator should know about the various operations of the sewing machine, its parts, their functions, its attachments and the terms related to stitching. Some of the common and important terms are explained in this Unit. view details
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