|4779550||Looper drive for a chainstitch sewing machine|
A looper drive for a chainstitch sewing machine comprising a rigid guide stud which is part of a support member for a looper shaft. The rigid guide stud is surrounded by a bushing which is swivably mounted on the guide stud. The guide stud as well as the ...
|4594957||Sewing machine belt feed with variable pitch drive pulley|
A work advancing mechanism for a sewing machine which includes a driven circulatory belt for positively advancing the work beneath the presser foot of the machine. The belt is entrained about and driven by a wheel assembly having an adjustable operative c...
|4498406||Sewing machine lubrication system|
A lubrication system for eccentric drives in a sewing machine wherein lubricant is fed through a hollow drive shaft and communicative radial ports. At its outlet end, the radial port is in fluid communication with a lubricant reservoir arranged on the ecc...