Sewing – Special machines – Buttonhole
Patent
1996-09-19
1998-10-13
Izaguirre, Ismael
Sewing
Special machines
Buttonhole
112446, 11247525, D05B 306
Patent
active
058196749
ABSTRACT:
Bight stitches at sides and bar tack stitches at ends of a buttonhole site are formed by periodically oscillating a needle bar holder over lesser and greater angles while a needle is in an up position. The needle bar holder is fixed to a horizontal transverse shaft. One end of a long, generally vertical arm is clamped to the shaft, and a generally horizontal link is pivoted to a lower end of the arm and to an adjustment slide in an upper arm of the inverted Y-shaped follower plate. The Y-shaped follower plate is pivoted on a central horizontal pivot. A double cam engages cam follower rollers oppositely extending from lower ends of the Y-shaped follower plate. Periodically, while the needle is up, the cams move the follower plate back and forth.
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Papajewski Gerd
Papajewski, deceased Rudy
AMF Reece, Inc.
Creighton Wray James
Izaguirre Ismael
Narasimhan Meera P.
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