Brother Kogyo Kabushiki-Kaisha

Masao Shimomura

Kunio Hirota

Kazuo Itoh

Yasuyo Isaji

Machine for cutting workpieces utilizing electric discharge

An automatic sewing machine wherein a plurality blocks of unit pattern information including many position data which are respectively corresponded to each of various unit stitch patterns such as letters, symbols, etc. are stored in memory means. In this machine a first manual means for selecting an individual unit pattern information from the plurality blocks of unit pattern information stored in the memory means in a desired order and a second manual means capable of determining at will an individual size, an individual inter-distance, and arrangement direction of the selected unit stitch patterns when they are formed on a workpiece are disposed in an operable manner by an operator. A newly combined stitch pattern consisting of a plurality blocks of unit pattern information selectively designated by the first manual means is modified owing to an operation of the second manual means, and each position data of the modified combination pattern information is read out in response to a synchronizing signal from the stitch forming mechanism. The workpiece is changed its position in relation to the needle according to the read out position data. In this way a combination stitch pattern is formed on the workpiece in a determined size, distance, and arrangement direction by the sewing operator.

Stitch pattern sewing machine

An automatic embroidery or stitch pattern sewing machine provided with a memory for storing plural blocks of cell pattern information respectively including zone data related to figure and location of a triangular or quadrangular zone on which a cell stitch pattern is to be formed, and a manual input device for setting up desired number of stitches to be formed in the zone. Based on the position data stored in the memory and the stitch number data set by the manual input device, a microprocessor connected thereto calculates the position data of the actual stitch forming positions; and a drive mechanism relatively moves the needle and the workpiece according to the position data calculated. Many cell stitch patterns thus formed on the workpiece turns out to be a desired unit stitch pattern such as a letter, symbol and other patterns.

An automatic sewing machine for forming a desired pattern on a workpiece by means of varying the position of a workholder for holding the workpiece in relation to a needle which is vertically reciprocated due to pattern data stored in advance in memory means. A sewing machine of this type is provided with a manual input device for setting up a numerical limit indicating an allowably movable sphere of the workholder without impacting or interfering with the needle and a controller for calculating a numerical result indicating the movement amount of the workholder in relation to the needle during the pattern forming operation based on the pattern data prior to the pattern forming operation. The controller makes a comparison of the calculated numerical result with the numerical limit set by the manual input means, and generates a signal for warning the operator of the exceeding, if so being the case, of the calculated numerical result over the above-mentioned set numerical limit.

Growing community of inventors

Nagoya, Japan

Masao Shimomura