Matsushita Electric Industrial Co., Ltd.

Yamato Mishin Seizo Kabushiki Kaisha

Tadashi Sato

Shigeo Neki

Hisashi Wada

Katsuhiko Iwai

Masaharu Imanishi

Sachihiko Hamaguchi

Ikuo Oomura

A sewing machine-driving apparatus forms an accurate and stable seam at a first stitch in a conventional double chain stitch or covering chain stitch sewing machine. Its motor is controlled so as to drive the sewing machine in a direction reverse to that of the usual sewing operation for a limited time period between the completion of a thread cutting operation and a point of time when the sewing machine needles reach their needle-down position. Thus, the stitching needles reach their lowest points without scooping a looper thread at the first stitch; assuring the formation of a stable and accurate seam in the second stitch.

Sewing machine-driving apparatus

In a sewing machine, immediately after every thread trimming, the electric motor is reversely rotated for a predetermined angle, hence reversely rotating the sewing mechanism, so that the needle bar is brought up to its upper dead point when the electric motor is stopped after the thread trimming, and, thereby, there is no fear of spoiling the object cloth by the needle tip. The predetermined angle is controlled by processing an output signal of a speed detector.

Sewing machine

An alarm apparatus for the delivery of livestock animals is inserted in the birth canal of a pregnant livestock animal such as a cow or a pig whose delivery is expected to be close at hand, so that it may warn of the onset of delivery and the necessity to take care for the delivery, etc. when it is pushed out of the birth canal by a fetus at the time of the onset of delivery.

Method and apparatus for delivery alarm for livestock animals

Growing community of inventors

Hirakata, Japan

Tadashi Sato