| 摘要 |
A toy sewing machine capable of switching between zigzag stitch forming and straight stitch forming operations comprising a machine body, a rotary main shaft, a needle bar mounting a sewing needle and connected to said rotary main shaft for reciprocating motion in a vertical plane, a pivotal member connected to said machine body for pivotal motion in a horizontal plane and formed with an axial center bore for permitting said needle bar to loosely extend therethrough, an actuation bar connected to said pivotal member for reciprocating motion in a horizontal plane, oscillating mechanism for causing said actuation bar to move in reciprocating motion in a horizontal plane in conjunction with the reciprocating motion of said needle bar, a mechanism for switching between a zigzag stitch forming operation and a straight by controlling the engagement of said actuation bar with said oscillating mechanism, a swinging mechanism connected to said actuation bar for repeated angular rotation to right and left as said actuation bar moved in reciprocating motion in a horizontal plane, a looper shaft connected to said swinging mechanism for reciprocating motion in a horizontal plane as said swinging mechanism repeatedly rotates angularly and a looper mounted at said looper shaft for cooperation with said needle.
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