How sewing machines are made?

Less people are sewing by hand now in a time of convenient and heavy-duty machines. Sewing by hand now is only majorly used for minor and rare repairs for clothes. Otherwise, households that earn a living from sewing tiny rugs to making big curtains or bed covers use either manual or electronic sewing machines. It’s relatively cheap, and could save precious hands from being a poor voodoo doll when the eyes go blurred after hours of sewing by hand.

The first sewing machine was patented by Sir Thomas Saint of France in 1790. It was a heavy-duty machine capable of stitching on leather and canvass, with the use of an awl and a notched needle to make chain stitches.

Saint_Thomas_1790_sewing_machine

This first design has continually developed through the years and has now given birth to the industrial and home sewing machines that has made clothing production easier and less costly. How are these machines made?

Sewing machines may be generally classified by purpose and by operation. By operation, there are manual sewing machines and electronic ones. For purpose, there are heavy-duty industrial machines and portable, light, and easy to use home sewing machines. Each share the basic parts, and only vary on durability and ease of use.

  • Industrial machines are made to be heavy duty, and are usually designed for just a limited selection of stitches that need to be sewn numerous times in a day. Industrial sewing machines thus need to be heavy duty and may not be very flexible in terms of stitches.
  • Home sewing machines on the other had are made to be portable, it is thus made of lighter materials, and are equipped with a variety of stitches, making its output widely diverse.
inner-structure-sewing-machine

The inner structure of sewing machine!

The most basic part in the production is called the “bit” or the frame or housing that envelopes the components of the sewing machine. It may be heavy metal, light metal, or made out of plastic. The production of the bit requires grinding, polishing, steel castings, heat treating, and forging to mold the frame according to plan.

Next is the motor. The motors usually range between 2 to 4 pieces, are outsourced from a supplier. Home sewing machines have more pieces to be considered such as gears, shafts, presser feet, electronic circuit boards for the robotics and mechanisms. Some of these are preassembled inside the bit during the production, while a lot are usually added as accessories included in the home sewing machine package.

After molding the bit and choosing and producing the sewing machine’s components based on its purpose, the parts are then assembled and packaged. You may think that this is the last step, but the most important is the quality control inspection after the whole process. Upon passing, the sewing machine is then released for being sold.

This is only the general process by which sewing machines are produced. Each developer could think of an edge to make their sewing machine more special and adapted to a task, to help it sell better in the market.