Brother Kogyo Kabushiki-Kaisha

Yasuhiko Watanabe

Hideo Ando

Hideo Kawaguchi

Takashi Kondo

Kazushi Inoue

Minoru Yamada

Yuji Tagawa

Takashi Nozu

Jun Shibata

Shigeru Abe

A feeding device for independently feeding, by a preparatory device, a binder strip and flap strips to a garment held by a base presses. There are eight types of combination in feeding fashions, whether or not the binder strip is to be fed, whether or not one flap strip is to be fed, and whether or not another flap strip is to be fed (2.sup.3 =8). Various feeding fashions are provisionally set in order prior to actual sewing, and control means controls actual operations of the preparatory device in accordance with the feeding fashions and every feeding fashions.

Workpiece fabric feeding device for binder strip sewing machine

A button sewing machine has a sewing needle reciprocatingly movable in response to rotation of a main shaft and a button gripping assembly having gripping portions for gripping and releasing a button and movable across the path of reciprocating travel of the sewing needle, the sewing needle and the button gripping assembly being operable together for sewing the button to a fabric. The button sewing machine includes a detector for detecting whether the button is gripped by the gripping portions. After it has been confirmed that the button is gripped by the gripping portions, the main shaft is driven by a control assembly for enabling the sewing needle to sew the button to the fabric.

Button sewing machine

The invention is concerned with a sewing apparatus having a sewing machine mounted on a work table, fabric workpiece clamping means capable of holding and releasing the fabric workpiece on the work table, and a feed driving mechanism for intermittently feeding the fabric workpiece clamping means, whereby machine sewing and fabric workpiece feed are repeated alternatingly thereby sewing buttons or forming buttonhole stitches to a plurality of sewing portions on the fabric workpiece. The sewing apparatus has auxiliary fabric workpiece clamping means operable independently of the fabric workpiece clamping means. In the case of processing of a long fabric workpiece, when the required amount of feed of the fabric workpiece exceeds the allowed stroke of the fabric workpiece clamping means between the feed start position and the maximum feed position, control means operate to allow the fabric workpiece clamping means to release the fabric work piece after the fabric workpiece is retained by the auxiliary fabric workpiece clamping means and to return towards the feed start position where the fabric workpiece clamping means again retain the fabric workpiece.

Apparatus for continuously forming stitches on a plurality of sewing

A tapping machine provided with a quill for rotatably supporting a spindle which holds a tap on one end thereof, a reversible electric motor for rotating the spindle and axially reciprocating the quill, an overload release clutch mounted in a power transmitting mechanism which is disposed between the quill and the motor, for suspending the power transmission between the quill and the motor when an overload is applied on the quill, and pulse signal generating means mounted between the clutch and the quill in the power transmitting mechanism for generating one pulse signal in response to each one pre-set unit distance of the quill during the forward motion thereof. The tapping machine performs a working cycle in good order wherein the spindle advances from the start position while being forwardly rotated until the number of pulse signals generated from the pulse signal generating means accords with a pre-set number and returns while being backwardly rotated back to the start position. The tapping machine is also provided with means for generating overload sensing signal when an interval between any two pulse signals from the pulse signal generating means exceeds a predetermined time duration, so as to backwardly rotate the motor immediately after the generation of the overload sensing signal, that is, an abnormal condition warning signal for returning the spindle to the start position.

Tapping machine

A tapping machine having a spindle which is moved reciprocally, i.e., in advancing and retracting direction while being rotated forwardly and backwardly for forming a female screw in a work with a screw tap attached at one end thereof. The machine is provided with driving means including a reversible electric motor, position sensing means for generating a sensing signal when the spindle is moved in advancing direction from a start position so far as a predetermined position, and temperature sensing means for generating a sensing signal when the temperature of the electric motor has risen exceeding a predetermined value. The machine normally repeats a working cycle wherein the spindle is moved in advancing direction from the start position while being rotated in forward direction until it is retracted to the start position soon after a sensing signal from the position sensing means has been generated. The operation of the spindle is continued, even when a sensing signal from the temperature sensing means is generated in the course of the advance-movement of the spindle until the current working cycle is finished. And a succeeding working cycle is prevented from being commenced until the sensing signal from the temperature sensing means is ceased.

Growing community of inventors

Nagoya, Japan

Yasuhiko Watanabe