Abstract: A method of forming stop stitches in a computerized sewing machine which stores needle amplitude control signals and fabric feed signals for forming a plurality of stitching patterns, and temporarily stores a plurality of patterns in accordance with designation by an operation and pattern stitching order, having the steps of providing stop stitch designation to be combined with said operation for said temporary storage or to be operated by way of the stitching, storing a plurality of stop stitch patterns as combinations of signals of relative fine varying amount of stitching coordinate, and selecting, by means of a micro computer, desired stop stitch pattern from said plurality of stop stitch patterns in response to stitchings while forming the patterns and the stop stitches by said stop stitch designation.

Abstract: A sewn pattern arrangement is produced by a zig zag sewing machine in a workpiece, within the range of a modular pattern length and width. Individual elementary patterns are sewn which are formed by several stitches and are preferably of the cross-stitch type and extend each only over a fraction of the modular pattern width. This makes it possible to sew elementary patterns at various locations within the provided range of widths, so that a variety of optically impressive designs may be produced by sewing pattern rows in a desired configuration. The respective final stitch of a pattern element forms the first stitch of the subsequent one, so that jump stitches between elementary patterns are avoided. Large-area patterns may be obtained by grouping rows of pattern elements side by side.

Abstract: A method and apparatus are provided for operator-controlled stitching of letters on materials wherein the letters have common stitch parameters. The operator selects desired stitch parameters, such as letter height, letter width, and stitch density, and stores the parameters in memory. In using the stored stitch parameters, the operator recalls them using a keyboard and also selects letters which are to be stitched using the stored and recalled stitch parameters. The apparatus is able to apply or use the recalled stitch parameters in connection with the selected letters to stitch the letters. In addition, the operator is able to define a number of different stitch patterns having selected and stored letters which can later be recalled for stitching thereof.

Abstract: A control circuit of an electronically controlled sewing machine is arranged so that, in response to a signal generated from an electronic memory element connected to pattern selection switches and a memory switch, and during stitching operation of a letter pattern designated to be accompanied by a supplemental symbol or mark, data for controlling stitches of the designated letter pattern and the accompanying symbol or mark are read out from a stitch control data memory. The designated combination of the letter pattern and the accompanying symbol or mark will be stitched with a natural appearance.

Abstract: A system is disclosed for assigning stitch patterns that are to be automatically sewn on workpieces presented to an automatic sewing machine. The system is capable of receiving a number of communications that identify separate stitch patterns that are to be sewn on a workpiece. The system analyzes these communications and either accepts or rejects the communications as valid stitch pattern assignments. In the event that a communication is accepted, it is stored in a recallable sequence of stitch patterns that are to be sewn on the workpiece.

Abstract: In an electronically controlled sewing machine having a memory storing a plurality of stitch patterns among which a desired one or combination may be selectively read out therefrom to produce the same, it is detected if a pattern designated to be followed by a lock stitch pattern and memorized accordingly in the memory is of a first type which includes the last stitch to be produced by initial data stored in the memory for producing the initial stitch of the pattern, or of a second type which includes the last stitch to be produced by the last data stored in the memory for producing the last stitch of the pattern, and according to the result of the detection, the sewing machine is operated to continuously produce the lock stitch pattern after the initial data has been issued from the memory for producing the pattern of the first type or after the last data has been issued from the memory for producing the pattern of the second type.

Abstract: Intercharacter data for use in an electronic sewing machine is prepared by the steps of constituting each intercharacter control data with a first stitch control data group for determining relative position between a fabric and a character, a second stitch control data group utilized to form the character, and a third stitch control data group for determining a spacing between adjacent two characters; drawing a top segment .alpha. and a bottom segment .beta. respectively passing through top and bottom portions of the characters in parallel with the fabric feeding direction; and drawing a front segment X and a rear segment Y respectively passing through mostly projecting portions of the character on the front and rear sides thereof with respect to the fabric feeding direction in perpendicularly to the segments .alpha. and .beta..