theory of sewing machine
sewing machine:) A sewing machine uses thread to fasten fabric together. A sowing machine plants seeds.
what is the function of the head of the sewing machine
A mechanical sewing machine.
A sewing machine is very much quicker than using a needle and thread. Modern sewing machines are also usually capable of zig-zag and other fancy stitching.
the sewing machine brooklyn
what is the function of a pulley in a sewing machine
The Singer 2517 Sewing Machine is quiet.
What does the tension disc do on the sewing machine
If by "olden days" you're referring to prior to 1846 (when the sewing machine was invented), there was no sewing machine. All sewing was done by hand.
The difference between an electric sewing machine and a manual sewing machine is only the method of propulsion. The electric machine uses an electric motor, while the manual machine uses a hand crank or foot pump to power it. The actual sewing machine is the same.
A sewing machine should be safe, durable and efficient. It has to have all three properties otherwise you could get hurt, or make poor products.