Methods for manufacturing articles of footwear including forming a first upper on a textile manufacturing machine and forming a second upper on the textile manufacturing machine at a time that at least partially overlaps with formation of the first upper. The first upper and the second upper are formed at separate locations of the textile manufacturing machine.

A flat knitting machine structure with an adjustable gap between two knock-over bits includes two needle beds and two cam systems. Each needle bed comprises a plurality of needles and a plurality of knock-over bits. Each needle comprises a butt. Each of the knock-over bits comprises a control butt. The two needle beds are disposed at interval so that the knock-over bits face each other to define a gap. The distance of the gap is equal to a space between two knock-over bits facing each other. Each cam system comprises a needle cam to provide the plurality of butts being placed and guide each needle to make a knitting stroke towards the gap, and a knock-over bit cam provides the control butts being placed. The knock-over bit cam is controlled to define a displacement stroke for driving the plurality of knock-over bits to change the size of the gap.

A flat knitting machine structure with an adjustable gap between two knock-over bits includes two needle beds and two cam systems. Each needle bed comprises a plurality of needles and a plurality of knock-over bits. Each needle comprises a butt. Each of the knock-over bits comprises a control butt. The two needle beds are disposed at interval so that the knock-over bits face each other to define a gap. The distance of the gap is equal to a space between two knock-over bits facing each other. Each cam system comprises a needle cam to provide the plurality of butts being placed and guide each needle to make a knitting stroke towards the gap, and a knock-over bit cam provides the control butts being placed. The knock-over bit cam is controlled to define a displacement stroke for driving the plurality of knock-over bits to change the size of the gap.

A flat knitting machine yarn feeder with variable yarn feeding positions is provided. The flat knitting machine yarn feeder includes a driving mechanism and a yarn feeding mechanism. The driving mechanism is controlled by an electronic signal and includes a driving plate which makes a push stroke after started. The yarn feeding mechanism comprises a joining plate connected with the driving plate and a yarn feeding arm assembled with the joining plate. The joining plate comprises a guide hole. The yarn feeding arm comprises a guide column disposed in the guide hole. The joining plate makes a displacement stroke when the driving plate makes the push stroke. The guide column changes a position in the guide hole when the joining plate makes the displacement stroke. The yarn feeding arm changes a yarn feeding position when the guide column changes the position.

A variable thickness knitted component including a first region having a spacer knit construction, the first region having a first thickness, and a second region having the spacer knit construction, the second region having a second thickness different than the first thickness. The knitted component may be an integral one-piece element.

A flat knitting machine structure with an adjustable gap between two knock-over bits includes two needle beds and two cam systems. Each needle bed comprises a plurality of needles and a plurality of knock-over bits. Each needle comprises a butt. Each of the knock-over bits comprises a control butt. The two needle beds are disposed at interval so that the knock-over bits face each other to define a gap. The distance of the gap is equal to a space between two knock-over bits facing each other. Each cam system comprises a needle cam to provide the plurality of butts being placed and guide each needle to make a knitting stroke towards the gap, and a knock-over bit cam provides the control butts being placed. The knock-over bit cam is controlled to define a displacement stroke for driving the plurality of knock-over bits to change the size of the gap.

A flat knitting machine structure with an adjustable gap between two knock-over bits includes two needle beds and two cam systems. Each needle bed comprises a plurality of needles and a plurality of knock-over bits. Each needle comprises a butt. Each of the knock-over bits comprises a control butt. The two needle beds are disposed at interval so that the knock-over bits face each other to define a gap. The distance of the gap is equal to a space between two knock-over bits facing each other. Each cam system comprises a needle cam to provide the plurality of butts being placed and guide each needle to make a knitting stroke towards the gap, and a knock-over bit cam provides the control butts being placed. The knock-over bit cam is controlled to define a displacement stroke for driving the plurality of knock-over bits to change the size of the gap.

A flat knitting machine yarn feeder with variable yarn feeding positions is provided. The flat knitting machine yarn feeder includes a driving mechanism and a yarn feeding mechanism. The driving mechanism is controlled by an electronic signal and includes a driving plate which makes a push stroke after started. The yarn feeding mechanism comprises a joining plate connected with the driving plate and a yarn feeding arm assembled with the joining plate. The joining plate comprises a guide hole. The yarn feeding arm comprises a guide column disposed in the guide hole. The joining plate makes a displacement stroke when the driving plate makes the push stroke. The guide column changes a position in the guide hole when the joining plate makes the displacement stroke. The yarn feeding arm changes a yarn feeding position when the guide column changes the position.

A variable thickness knitted component including a first region having a spacer knit construction, the first region having a first thickness, and a second region having the spacer knit construction, the second region having a second thickness different than the first thickness. The knitted component may be an integral one-piece element.

Methods for manufacturing articles of footwear including forming a first upper on a textile manufacturing machine and forming a second upper on the textile manufacturing machine at a time that at least partially overlaps with formation of the first upper. The first upper and the second upper are formed at separate locations of the textile manufacturing machine.