Button sewing machine
AssigneeBrother Kogyo Kabushiki Kaisha
InventorsHideo Ando, Hideo Kawaguchi, Yasuhiko Watanabe
Life of this patent
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Abstract
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.
Claims11
A button sewing machine comprising:
- a frame including a bed;
- a main shaft rotatably supported by said frame and drivable by a drive source;
- a sewing needle responsive to rotation of said main shaft for reciprocating movement along a path to sew a button to a fabric;
- button gripping means having gripping portions for gripping and releasing the button on said path and movable on said bed across said path in response to rotation of said main shaft;
- detector means for ascertaining whether the button is gripped by said gripping portions;
- and
- control means for driving said main shaft to enable said sewing needle to sew the button to the fabric in response to a signal generated by said detector means when the button is gripped by said gripping portions.
Dependencies are inferred from the claim text.