This is because the old embroidery machines used

embroidery punching is not only used for decorations, as most people automatically assume. it is also used for all sorts of clothing, bedding, curtains, furniture, toys, and dozens of other things. embroidery created by a machine is usually stronger than the embroidery created by hand, which makes the products you buy more durable than they would have been 20 years ago.
when a design is completed, they move to the design that’s on top of the pile. when a customer calls and wants to know when they’ll get to their design, they dig frantically through the pile until the design is located. when the embroidery dst is complete, the design is placed on top of the pile with the promise the design will be done next.
embroidery hoop is a machine embroidery digitizing device which is made from wood, plastic or steel with which fabric is gripped tightly between an inner ring and an outer ring and attached to the machine's pantograph. machine hoops are designed to push the fabric to the bottom of the inner ring and hold it against the machine bed for embroidering.