Inventors:
Sydney Newman - Brooklyn NY
International Classification:
D05B 312
Abstract:
A sewing machine (10) for mass producing zipper closable garment pocket entries (65) includes a pair of pocket entry (65) in a plurality of garments (50,72,80). The apparatus 10 is a modification of a conventional type of double needle sewing machine and includes knife blades (18) spaced laterally apart from each other which cooperate with a pair of conventional double needles (12) to cut in advance of each stitch (58) and enable provision of a square miter at the ends of each finished pocket entry (65). The knife blades (18) are disposable between and behind the two needles (12) in the material feed direction. A feeder mechanism feeds continuous zipper tape (38) across the throat plate (16) beneath the needles (12) and knife blades (18) which may be selectively lowered and raised by the operator. The knife blades (18) operate in conjunction with the needle bar (14) movement only when engaged so as to cut in advance of each stitch while being unaffected by needle bar movement when disengaged. The zipper tape (38) is thus sewn onto the garment as it is advanced across the throat plate (16) while the engaged knife blades (18) simultaneously cut two parallel longitudinal slits (60) in the garment (50,72,80) at the pocket location between the outer extremeties of the sewn zipper tape (38).