Brother Kogyo Kabushiki-Kaisha

Akira Sugiyama

Kunio Hirota

Shiro Yamada

Yoshikazu Yamamoto

An apparatus for attaching a plurality of studs on a flexible sheet material such as work fabric, leather or the like according to a desired pattern comprizes a holder for holding the sheet material, a supply device for supplying studs severally, a plastic working device including a punch and die set for attaching the studs on the sheet material, and a drive device for varying the relative position between the holder and the plastic working device. The studs may be supplied severally and attached sequentially to the sheet material while the relative position between the holder and the plastic working device is varied by the drive device.

Apparatus for attaching a plurality of studs on flexible sheet material

A sewing machine provided with a needle capable of vertically reciprocating as well as laterally oscillating, a workholder so disposed as to be movable, in an X-Y coordinate plane which is in substantially right-angled relation with the needle, in the direction of the X axis and the Y axis, and memory means for storing data for controlling the oscillation movement amount of the needle and the shift amount of the workholder. The workholder is disposed in such a posture that each movement direction of X axis and Y axis thereof intersects the oscillation movement direction of the needle, whereby embroidery or stitch patterns of letters, symbols, and other patterns can be formed on the workpiece held on the workholder exclusively with slant stitches at a predetermined angle against a horizontal reference line of the letters, etc.

Embroidery pattern forming machine

This invention relates to a contour tracing sewing machine for forming a line of seam on a workpiece in conformity with a contour of a stitching templet of a desired shape. The tracing device used in the contour tracing sewing machine comprises a light source for emitting light towards the stitching templet, and a light sensing head consisting of a plurality of optical fibers arranged in an annular form for transmitting the light radiated on the stitching templet to a plurality of photoelectric cells. The tracing device further comprises a device for selecting a predetermined tracing direction according to electric signals produced from the plurality of photoelectric cells, so that the stitching templet and the workpiece may be shifted relatively to the light source and the sensing head by a drive device of an open-loop type in the tracing direction thus selected.

Growing community of inventors

Nagoya, Japan

Akira Sugiyama