I need a schematic or help with wiring a Westinghouse motor circa the 1930s. Mine is a clutch motor for a 1920 Singer industrial sewing machine

 

hi d,
Welcome to AAC.
Anything on this image list that looks like your motor.?
E
https://www.google.com/search?client=firefox-b-d&q=Westinghouse+motor+circa+the+1930

or
https://www.google.com/search?client=firefox-b-d&q=Westinghouse+sewing+machine+motor+circa+the+1930

 

Pretty sure he's talking about what is commonly known as a "walking foot" type machine, since he also mentioned it has a clutch.

 

Many of the older machines (an some current ones!) used a Universal motor with simple variable resistance pedal.
@dangme does the motor have brushes?
Max.

 

Many of the older machines (an some current ones!) used a Universal motor with simple variable resistance pedal.

Any of the older or even kind of newer(not withing the last 20 years or so) on industrial machines with a clutch used induction motors, They slipped the clutch, controlled by your knee, to change the speed of sewing, not a foot rheostat. The real newer ones use a BLDC motor and the same knee operated lever for speed..