|4655151||Convertible work support housing for a sewing machine|
A housing forming the free bed base in a sewing machine which is detachable from the remainder of the machine and which is comprised of a tray-shaped base module on which are mounted all lower sewing members that cooperate with the needle in the formation...
|4624202||Sewing machine differential feed|
A sewing machine which has two substantially independent sets of feed dog teeth comprising a set of main fabric feed dog teeth and secondary or differential feed dog teeth and includes a drive therefore defined by a main drive shaft and a two piece interc...
|4421047||Upper feed dog device|
An upper feed dog for sewing machines carried by an actuating arm pivotably mounted on a support fixed to the upper surface of the main feed bar that carries the main lower feed dog. A control arm has one end pivotably connected to the same pivot as the a...