Sewing machine

Abstract

A sewing machine is described with a sewing needle drive ( 4 ) and a forward feed drive for the garment, comprising a continuous rotational drive ( 9 ), a belt conveyor ( 7 ) for the garment and an intermediate drive ( 10 ) with two gearwheels disposed between the rotational drive ( 9 ) and the belt conveyor ( 7 ), of which the gearwheel on the driven side can be twisted relative to the one on the drive side with over-feed or underfeed by means of a control lever ( 14 ) driven by an eccentric drive ( 15 ) depending on the sewing needle drive ( 4 ). In order to provide advantageous construction conditions it is proposed that the two gearwheels are arranged as mutually combing gearwheels ( 11, 12 ), of which the one on the driven side is held in a fixed link ( 13 ) rotationally held about the axis of the gearwheel ( 11 ) on the drive side, on which the control lever ( 14 ) acts.

1 . A sewing machine with a sewing needle drive and a forward feed drive for the garment, comprising a continuous rotational drive, a belt conveyor for the garment and an intermediate drive with two gearwheels disposed between the rotational drive and the belt conveyor, of which the gearwheel on the driven side can be twisted with overfeed or underfeed by means of a control lever driven by an eccentric drive depending on the sewing needle drive, wherein the two gearwheels are arranged as mutually combing gearwheels ( 11 ,  12 ), of which the one on the driven side is held in a fixed link ( 13 ) rotationally held about the axis of the gearwheel ( 11 ) on the drive side, on which the control lever ( 14 ) acts.  
   
   
       2 . A sewing machine according to  claim 1 , wherein the drive connection between the gearwheel ( 12 ) on the driven side and the belt conveyor ( 7 ) comprises a belt drive ( 18 ) whose deflection rollers are held coaxially relative to the two gearwheels ( 11 ,  12 ).  
   
   
       3 . A sewing machine according to  claim 1 , wherein the control lever ( 14 ) is arranged as a connecting rod of the eccentric drive ( 15 ) whose eccentric shaft ( 16 ) extends parallel to the drive shaft ( 5 ) of the sewing needle drive ( 4 ) and is connected with the same by means of a belt drive ( 17 ).