Patent ID: 6968793

Claim:
A transverse longitudinal-cylinder sewing machine, comprising: an automatic thread loosening device; a tension adjustment mechanism; an automatic thread cutting bi-directional solenoid device; and a differential fabric driving teeth displacement control device which includes; a primary transmission mechanism; a first and a second push mechanisms driven by said primary transmission mechanism for swinging reciprocally; a first and a second adjustment mechanism connecting to said first and said second push mechanisms; a rocking mechanism driven by said primary transmission mechanism; and a first and a second fabric driving mechanism driven by said second push mechanism to move reciprocally and horizontally, and driven by said rocking mechanism for swinging up and down thereby to move in an oscillated manner along an ellipsoidal track; wherein said first and said second fabric driving mechanisms are normal to other mechanisms and form chained movements therewith to control an operation displacement between said first and said second fabric driving mechanisms, thereby to facilitate fabric movement and adjust to deviations of said first and said second push mechanisms through said first and said second adjustment mechanisms to control the relative operating displacements there between. said primary transmission mechanism includes a co-axle which is assembled in this order: a first crank, a second crank and a third crank, said seventh crank being coupled with an first axle sleeve of a first bearing, said the first axle sleeve being fastened to one end of said co-axle, said third crank being coupled on one end of an second axle sleeve of a second bearing, then coupled to one side of said seventh crank spaced by a washer, said second axle sleeve having another end coupling with a third bearing which is coupled with said second crank from outside, said second crank having another side corresponding to said second axle sleeve to couple with an anchor assembly to allow said co-axle to couple with a lower arched wire mechanism; said co-axle having another end corresponding to said seventh crank fastened to an third axle sleeve which is coupled with a fourth bearing and a washer ring, said third axle sleeve being coupled with a fourth crank, the co-axle being coupled with a linkage arm, a bearing and a cam of the second push mechanism, the fourth crank having a slot formed at one end to couple with a firth shaft to pivotally engage with said two linking arms to connect said first push mechanism and said first adjustment mechanism.