The Singer Company N.v.

Tetsuo Kambara

Hideyuki Kobayashi

Hiroshi Kojima

A mask sewing device comprises a pair of sewing machines which are fixed to a working table, being arranged left and right thereon in such a way as to face each other, and are operated in synchronism with each other, a pair of belts provided apart from each other on the working table by a given interval, each belt extending between the mask cloth feeding side and mask cloth sending-out side of the working table and a feeding unit for driving the belts in the normal and reverse directions, wherein the sewing machines can concurrently sew the folded end portions of the mask cloth at both sides thereof respectively, the mask cloth being inserted into the interval from the feeding side. Since the mask cloth is sewn by a pair of sewing machines while belts are driven normally and reversely by a feeding unit to feed the folded mask cloth forward and backward on the working table, it is possible to efficiently sew a mask of high quality in which stitch lines on both sides thereof are uniform and symmetrical to each other without veteran skill. As a result, it is possible to make practiceable the sewing processes in a sewing factory.

Cloth feeding in a mask sewing device

A drawing device for towel cloth for successively drawing out and cutting off a towel material of long size as long as a sheet of towel from the rest of the towel material at the plain woven portion thereof, the towel material of long size having plain woven portions and pile fabric portions alternately and continuously arranged at predetermined intervals in the longitudinal direction thereof. The drawing device comprises a feed roller disposed perpendicular to the drawing direction of the towel cloth on the drawing side thereof relative to the cutting unit and capable of feeding back the cut end portion of the cut towel cloth on the drawing side to the side of the towel material relative to the cutting unit and a thickness detector disposed in the same way as the feed roller orthogonally to the drawing direction of the towel cloth having an aperture-adjustable slit for stopping the pile fabric portion of the fed back towel cloth thereby. The length of the cut plain woven portion which is positioned adjacent to the cutting unit on the drawing side can be constant even if the dimensions of the plain woven portions of the towel material are varied. Moreover, it is simple in construction and can be manufactured with ease.

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Utsunomiya, Japan

Tetsuo Kambara