Cycle sewing machine

Details Cycle sewing machine Cycle sewing machine

1991-07-19

1993-01-19

Falik, Andrew M.

Sewing

Special machines

Buttonhole

112111, D05B 300

Patent

active

051799049

ABSTRACT:
A cycle sewing machine comprises a main shaft and a clutch mechanism for connecting the main shaft to a driving source. The clutch mechanism has a breaking cam fixed to the main shaft. A breaking frame is movable to engage with the breaking cam to lock the main shaft at a predetermined position. A rotatable eccentric cam is synchronized with the main shaft. The machine further comprises a rocking link driven by the eccentric cam, an operative rod driven by the rocking link, a button holder driven by the operative rod to move vertically, and a thread trimming mechanism driven by the operative rod for cutting a thread. A drive control shaft rotates in synchronization with the main shaft to effect one rotation per cycle of sewing operation. The drive control shaft has a first control cam and a second control cam. A first control mechanism is driven by the first control cam for driving the clutch mechanism to connect the main shaft to the driving source, and the second control mechanism driven by the second control cam for bringing the operative rod into engagement with the rocking link and bringing the breaking lever into engagement with the breaking cam.

REFERENCES:
patent: 2609773 (1952-09-01), Nelson
patent: 3705561 (1972-12-01), Sakawa et al.
patent: 3894500 (1975-07-01), Hsiao
patent: 3970013 (1976-07-01), Hsiao

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