Method and apparatus for sewing sleeves on shirt bodies
AssigneeUnion Special Corporation
InventorsMaximilian Adamski, Jr., Stephen J. Pagett
Life of this patent
Estimating the term…
Abstract
A sewing machine in combination with a work piece control and advancing mechanism and a microprocessor for setting sleeves in shirt bodies. A sleeve and shirt body are manually loaded on the work piece control and advancing mechanism and placed under the presser foot and the individual edge guides. An automatic sew cycle is then actuated that is under the control of the microprocessor. During the automatic sew cycle the sewing machine operator is free to prepare to load the next product.
Claims28
A sewing machine in combination with a work piece control and advancing mechanism and a microprocessor for setting sleeves into a shirt body in which the sew cycle of the sleeve setting procedure is performed automatically;
- said sewing machine including stitch forming instruments for forming a seam having a stitch line a predetermined distance from the aligned circular edges of a shirt body arm hole and a sleeve arm hole;
- a frame, said sewing machine and said work piece control and advancing mechanism mounted on said frame;
- said work piece control and advancing mechanism including edge guider mechanisms that function to individually control the circular edges of the shirt body arm hole and the sleeve arm hole such that their marginal edges are maintained aligned and a predetermined distance from said stitch line as the circular edges of the work pieces advance toward said stitch forming instruments;
- said work piece control and advancing mechanism including a seam detector mechanism that detects the beginning of the seam as it returns to said edge guider mechanisms and sends a seam detect signal to said microprocessor;
- said microprocessor, in response to said seam detect signal, causes said edge guider mechanisms to be withdrawn from the sew area;
- said microprocessor, in response to said seam detect signal, actuating components of the sewing machine and work piece control and advancing mechanism at predetermined times measured from the seam detect signal to automatically complete the sew cycle and eject the sewn garment from the stitch forming instruments.
A sewing machine in combination with a work piece control and advancing mechanism and a microprocessor for setting sleeves into a shirt body in which the sew cycle of the sleeve setting procedure is performed automatically;
- said sewing machine including stitch forming instruments for forming a seam having a stitch line a predetermined distance from the aligned circular edges of a shirt body arm hole and a sleeve arm hole;
- a frame, said sewing machine and said work piece control and advancing mechanism mounted on said frame;
- said work piece control and advancing mechanism including edge guider mechanisms that function to individually control the circular edges of the shirt body arm hole and the sleeve arm hole such that their marginal edges are maintained aligned and a predetermined distance from said stitch line as the circular edges of the work pieces advance toward said stitch forming instruments;
- an edge sensor for each of said edge guider mechanisms, said edge sensor sends a signal to said microprocessor whenever it changes from sensing an edge to not sensing an edge or from not sensing an edge to sensing an edge, and said microprocessor sends a signal to the corresponding edge guider mechanism to reverse its direction of feed in response to the signal from the sensor;
- said microprocessor monitors signals from said edge guider mechanisms and if there are no signal transitions within a certain time period a function being performed will be stopped.
A sewing machine in combination with a work piece control and advancing mechanism and a microprocessor for setting sleeves into a shirt body in which the sew cycle of the sleeve setting procedure is performed automatically;
- said sewing machine including stitch forming instruments for forming a seam having a stitch line a predetermined distance from aligned circular edges of a shirt body arm hole and a sleeve arm hole;
- a frame, said sewing machine and said work piece control and advancing mechanism mounted on said frame;
- said work piece control and advancing mechanism including edge guider mechanisms that function to individually control the circular edges of the shirt body arm hole and the sleeve arm hole such that their marginal edges are maintained aligned and a predetermined distance from said stitch line as the circular edges of the work pieces advance toward said stitch forming instruments;
- said sewing machine includes an encoder that transmits a series of pulses to the said microprocessor for each stitch produced by the sewing machine and said microprocessor uses this series of pulses to synchronize the speed of said edge guiders mechanisms with the speed of the sewing machine.
A sewing machine in combination with a work piece control and advancing mechanism and a microprocessor for setting sleeves into a shirt body in which the sew cycle of the sleeve setting procedure is performed automatically;
- said sewing machine including stitch forming instruments for forming a seam having a stitch line a predetermined distance from aligned circular edges of a shirt body arm hole and a sleeve arm hole;
- a frame, said sewing machine and said work piece control and advancing mechanism mounted on said frame;
- said work piece control and advancing mechanism including edge guider mechanisms that function to individually control the circular edges of the shirt body arm hole and the sleeve arm hole such that their marginal edges are maintained aligned and a predetermined distance from said stitch line as the circular edges of the work pieces advance toward said stitch forming instruments;
- a shirt support plate including a shirt revolving mechanism that imparts rotary movement to the shirt body in the direction of feed during sewing and prevents the shirt body from twisting and creating a tug on the edge guider mechanisms.
A sewing machine in combination with a work piece control and advancing mechanism and a microprocessor for setting sleeves, that taper down along their longitudinal axis from their arm hole end and have arm hole ends that are generally elliptically shaped and tilted relative to the longitudinal axis, into a shirt body in which the sew cycle of the sleeve setting procedure is performed automatically;
- said sewing machine including stitch forming instruments for forming a seam having a stitch line a predetermined distance from the aligned circular edges of a shirt body arm hole and a sleeve arm hole;
- a frame, said sewing machine and said work piece control and advancing mechanism mounted on said frame;
- said work piece control and advancing mechanism including edge guider mechanisms that function to individually control the circular edges of the shirt body arm hole and the sleeve arm hole such that their marginal edges are maintained aligned and a predetermined distance from said stitch line as the circular edges of the work pieces advance toward said stitch forming instruments;
- said work piece control and advancing mechanism includes a set of rollers upon which the work pieces are loaded during a loading cycle, said set of rollers support the work pieces during the loading and sewing cycles, said set of rollers being supported on said frame to the right of said stitch line and having converging free ends, one roll of said set being located forward of and the other being located rearward of said stitch forming instruments and wherein said roll that is located rearwardly of said stitch forming instruments is automatically shifted to the right during the automatic sew cycle to compensate for the inherent work piece drift to the left on said roll and the tilted elliptical arm hole end.
A sewing machine in combination with work piece control and advancing mechanisms and a controller for setting a sleeve into a shirt body in which the sew cycle of the sleeve setting procedure is performed automatically;
- said sewing machine including stitch forming instruments for forming a seam having a stitch line a predetermined distance from aligned circular edges of a shirt body arm hole and a sleeve arm hole;
- said work piece control and advancing mechanism mounted on said sewing machine;
- said work piece control and advancing mechanism including an edge guider mechanism that function to control the circular edges of the shirt body arm hole and the sleeve arm hole such that their marginal edges are maintained aligned and a predetermined distance from said stitch line as the circular edges of the work pieces advances toward said stitch forming instruments;
- said work piece control and advancing mechanism being programmed as to the number of stitches required to complete the seam and including a stitch counter mechanism such that when the beginning of the seam approaches said edge guider mechanisms a beginning of the seam signal is sent to said controller;
- said controller, in response to said beginning of the seam signal, causes said edge guider mechanisms to be withdrawn from the sew area and to automatically complete the sew cycle.
A sewing machine in combination with a work piece control and advancing mechanism and a controller for setting a sleeve into a shirt body in which the sew cycle of the sleeve setting procedure is performed automatically;
- said sewing machine including stitch forming instruments for forming a seam having a stitch line a predetermined distance from the aligned circular edges of a shirt body arm hole and a sleeve;
- said work piece control and advancing mechanism mounted on said sewing machine;
- said work piece control and advancing mechanism including an edge guider mechanisms that functions to control the circular edges of the shirt body arm hole and the sleeve such that their marginal edges are maintained aligned and a predetermined distance from said stitch line as the circular edges of the work pieces advances toward said stitch forming instruments;
- and
- a shirt support plate including a shirt revolving mechanism that imparts rotary movement to the shirt body in the direction of feed during sewing and prevents the shirt body from twisting and creating a tug on the edge guider mechanisms.
A sewing machine in combination with a work piece control and advancing mechanism and a controller for setting a sleeve into a shirt body in which the sew cycle of the sleeve setting procedure is performed automatically;
- said sewing machine including stitch forming instruments for forming a seam having a stitch line a predetermined distance from the aligned circular edges of a shirt body arm hole and a sleeve;
- said work piece control and advancing mechanism mounted on said sewing machine;
- said work piece control and advancing mechanism including edge guider mechanisms that functions to control the circular edges of the shirt body arm hole and the sleeve such that their marginal edges are maintained aligned and a predetermined distance from said stitch line as the circular edges of the work pieces advance toward said stitch forming instruments;
- and
- said work piece control and advancing mechanism includes a set of rollers for supporting the work piece during the loading and sewing cycles, said set of rollers being supported on said sewing machine to the right of said stitch line and having converging free ends, one roll of said set being located forward of and the other being located rearward of said stitch forming instruments and wherein said roll that is located rearwardly of said stitch forming instruments is automatically shifted to the right during the automatic sew cycle to compensate for the inherent work piece drift to the left on said roll and the tilted elliptical arm hole end.
Dependencies are inferred from the claim text.