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US 6,748,886 B2Granted
Workpiece formed with pattern and method and apparatus for manufacturing the same
AssigneeBrother Kogyo Kabushiki Kaisha
InventorYasuhiro Shimizu
Life of this patent
Estimating the term…
Abstract
A patterned cloth is made by which a pattern is formed on a surface of a work cloth by passing a thread through the work cloth a number of times and forming a plurality of free loops on the reverse side of the work cloth. A double-sided adhesive tape is provided to fix the free loops on the reverse side of the work cloth. The work cloth has an elastic film member, the elastic film member allowing the free loops to be retained on the reverse side of the work cloth.
Claims17
A method for manufacturing a patterned cloth by forming an embroidery pattern on a surface thereof, comprising the steps of:
- passing a needle having a thread through a workpiece;
- leaving a free loop on a reverse side of the workpiece;
- repeating the passing step and the leaving step a number of times with changing a position where the thread is passed through the workpiece;
- and
- fixing the plurality of free loops left on the reverse side of the workpiece,
- wherein the passing step includes forming a cut surface having an arc shape in cross section in the workpiece and the leaving step includes pinching the thread between the cut surfaces by the elasticity of the workpiece, the needle moves downward along an arc to pass through the workpiece.
3 more elements
A sewing apparatus for manufacturing a patterned cloth, comprising:
- a sewing tool that passes a thread through a workpiece;
- a sewing tool driving device that reciprocates the sewing tool in a direction passing through the workpiece;
- a moving device that relatively moves a workpiece holder having the workpiece and the sewing tool in a direction in a plane transverse to a reciprocating direction of the sewing tool;
- and
- a controller that controls the sewing tool driving device and the moving device to cause a thread to pass through the workpiece a number of times in different positions so that a plurality of free loops are left on a reverse side of the workpiece by frictional resistance between the workpiece and the thread passed therethrough, thereby forming an embroidery pattern on a surface of the workpiece, wherein the sewing tool is a hollow needle, the hollow needle whose tip is inclined with respect to an axis of the hollow needle is swung and passes through the workpiece downwardly along an arc such that a cut surface having an arc shape in cross section is formed in the workpiece.
2 more elements
A method for manufacturing a patterned cloth by forming an embroidery pattern on a surface thereof, comprising the steps of:
- passing a thread through a workpiece;
- leaving a free loop on a reverse side of the workpiece;
- repeating the passing step and the leaving step a number of times with changing a position where the thread is passed through the workpiece;
- and
- fixing the plurality of free loops left on the reverse side of the workpiece, wherein the passing step includes forming a cut surface having an arc shape in cross section in the workpiece and the leaving step includes pinching the thread between the cut surfaces by the elasticity of the workpiece, the workpiece includes an elastic film member, and the leaving step further includes leaving each free loop on the reverse side of the workpiece with frictional resistance between the workpiece and the thread passed therethrough caused by elasticity of the elastic film member of the workpiece.
2 more elements
A sewing apparatus for manufacturing a patterned cloth, comprising:
- a sewing tool that passes a thread through a workpiece;
- a sewing tool driving device that reciprocates the sewing tool in a direction passing through the workpiece;
- a moving device that relatively moves a workpiece holder having the workpiece and the sewing tool in a direction in a plane transverse to a reciprocating direction of the sewing tool;
- and
- a controller that controls the sewing tool driving device and the moving device to cause a thread to pass through the workpiece a number of times in different positions so that a plurality of free loops are left on a reverse side of the workpiece by frictional resistance between the workpiece and the thread passed therethrough, thereby forming an embroidery pattern on a surface of the workpiece, wherein the sewing tool is a hollow needle, the hollow needle whose tip is inclined with respect to an axis of the hollow needle is swung and passes through the workpiece downwardly along an arc such that a cut surface having an arc shape in cross section is formed in the workpiece, the workpiece includes an elastic film member, and the plurality of free loops are left on the reverse side of the workpiece by frictional resistance between the workpiece and the thread passed therethrough, which is caused by elasticity of the workpiece itself.
2 more elements
Dependencies are inferred from the claim text.