Yoshida Kogyo K.k.

Ykk Corporation

Koichi Kawakami

Mitsuo Sawada

Shinichi Kojima

Tsuneo Suzuki

Noriaki Kazama

Hiromitsu Horita

Disclosed are a method and apparatus for detection of a magnetic substance erroneously included in a non-magnetic product. The non-magnetic product such as a sewn product is passed through a high magnetic field in which a magnetic field is applied to the product. The residual magnetization of a magnetic substance such as a broken needle mingled in the product is detected by a sensing unit and a signal of detection is transmitted to a measuring unit to measure the magnitude of detected residual magnetization. The presence or absence of the magnetic substance in the product is determined by a control unit based on the output from the measuring unit. Alternatively, a magnetic field may be preparatorily applied to a magnetic substance having the possibility of being mingled in the non-magnetic product thereby causing the magnetic substance to assume a state of possessing residual magnetization.

Method and apparatus for detecting broken sewing needles in sewn articles

A pair of separable slide fastener stringers is fed along in one plane along parallel spaced paths, respectively, toward throats of a Y-shaped guide channel in a slider fixed in position. Pins of the stringers are inserted into the guide channel through the throats, respectively. The pins as they emerge from a rear end of the slider are stopped when rows of coupling elements start intermeshing with each other within the guide channel. The separable slide fastener stringers are moved again at the same speed to bring the rows of coupling elements into intermeshing engagement.

Method and apparatus for automatically threading separable slide

A pair of separable slide fastener stringers is fed in one plane along parallel spaced paths, respectively, toward throats of a Y-shaped guide channel in a slider fixed in position. Pins of the stringers are introduced into the guide channel through the throats, respectively, in the slider while keeping the separable slide fastener stringers in the parallel spaced paths. The separable slide fastener stringers are inserted through the slider with the pins guided by guide flanges, respectively, and a diamond of the slider while moving the separable slide fastener stringers in the one plane along the parallel spaced paths and at the same time allowing the stringer tapes to flex.

Disclosed herein are method and apparatus for attaching pin fittings to a slide fastener having a separable end stop, in which a pin fitting is attached to a slide fastener by the steps of holding the pin fitting by a pin fitting holder, moving the stringer tape gripped by a gripper for introducing a core portion of the tape into the pin fitting, and deforming the pin fitting to secure it to the core portion. In these method and apparatus, attachment by deforming the pin fitting is performed under a condition where a first fastener element of a fastener element row affixed to the stringer is abutted against an end portion of the pin fitting with a force of a predetermined magnitude.

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Toyama, Japan

Koichi Kawakami