Dongguan Zhongtang yu' an Weaving factory
Short video showing a walking foot sewing machine is operation. Watch as the feet climb over a second layer of leather, go around, then climb down again. This machine has triple, or compound feed, where the needle, the inside presser foot and the bottom feed dog all move together. The outside presser foot applies pressure to the material between stitches, to prevent it from moving on its own.This is the best feed system for thick work that encounters new layers of significant thickness. Leather sewing, such as the veg-tan belt leather shown in this video, requires either a walking foot or jumping foot, needle feed system, to climb over new layers and to keep layers from dragging and separating. Walking foot machines, like the one in this video, are most often used in the upholstery, automotive, marine and leather sewing trades. They are also used to sew denim garments. They are much stronger than tailoring machines and can sew up to 3/8 inch of material, with up to #138 bonded thread.Note, that this is a real walking foot machine, where the inner foot pulls the material along with the needle and feed dog. Do not be fooled into thinking that a so-called walking or even feed attachment for a home sewing machine can even come close to this operation. If you need to sew thick, or dense material, with layers that must be climbed over, only a walking foot machine will get the job done without hassles, or manual assistance.The sewing machine was equipped with a SewPro 500GR servo motor, which used to be sold by Toledo Industrial Sewing Machines. This motor allowed for extremely slow, up to normal fast sewing, with smooth foot pedal control. It drew no current unless it was operating the machine. The motor had 3:1 gear reduction built in, so it doesn’t normally require a speed reducer to punch through fairly thick leather. The 500GR drew just 300 watts under full load, yet produced the torque of a 1/2 horsepower clutch motor (but without the heat and constant electricity usage).The National 300N has since been sold and that SewPro motor is no longer being produced. I now use Family Sew FS-550s Servo motors on my machines.See http:// for more information about walking foot machines, motors and accessories for all industrial sewing machines.
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