Infinite throat sewing machine material movement apparatus and method

An infinite throat sewing machine material movement apparatus comprising:

• a. a support with a left side and a right side;
• b. first feed and take up roller connected with the support between the left side and the right side wherein the first feed and take up roller is connected with a first motor;
• c. a second feed and take up roller connected with the support between the left side and the right side wherein the second feed and take up roller is connected with a second motor;
• d. a first encoder pipe connected with the support between the left side and the right side wherein the first encoder pipe is connected with a first encoder motor;
• e. a second encoder pipe connected with the support between the left side and the right side wherein the second encoder pipe is connected with a second encoder motor;
• f. a controller connected with the first motor and the second motor and the first encoder motor and the second encoder motor wherein the controller operates the first motor and second motor to rotate the first feed and take up roller in a first direction and the second feed and take up roller in a second direction such that material connected with the first feed and take up roller and the second feed and take up roller is held at a selected tension and wherein the controller operates the first encoder motor and the second encoder motor to override the first motor and the second motor such that material connected with the first feed and take up roller and the second feed and take up roller moves in said first direction or in said second direction while maintaining said selected tension;
• and
• f. a sewing machine wherein the sewing machine is constrained in movement such that it moves left and right between the left side and the right side as material is moved toward the sewing machine and away from the sewing machine.

An infinite throat sewing machine material movement method comprising:

• a. providing first feed and take up roller wherein the first feed and take up roller is connected with a first motor;
• a second feed and take up roller wherein the second feed and take up roller is connected with a second motor;
• a first encoder pipe wherein the first encoder pipe is connected with a first encoder motor;
• a second encoder pipe wherein the second encoder pipe is connected with a second encoder motor;
• a controller connected with the first motor and the second motor and the first encoder motor and the second encoder motor wherein the controller operates the first motor and second motor to rotate the first feed and take up roller in a first direction and the second feed and take up roller in a second direction such that material connected with the first feed and take up roller and the second feed and take up roller is held at a selected tension and wherein the controller operates the first encoder motor and the second encoder motor to override the first motor and the second motor such that material connected with the first feed and take up roller and the second feed and take up roller moves in said first direction or in said second direction while maintaining said selected tension;
• and
• b. a sewing machine wherein the sewing machine is constrained in movement such that it moves left and right as material is moved toward the sewing machine and away from the sewing machine.