Electric motors and grinders (source code 115 for Sears). Under Construction
		
		
		
				
						| Design | Badge | Model# | Type | Notes | Grinder Size
 | Motor/ Type
 | HP | RPM | Amp | Volt | Hz | Phase | LH Brg | LH Shaft | LH Key | Rotor Size | RH Brg | RH Shaft | RH Key | 1930s | 1940s | 1950s | 1960s | 1970s | 
				
						| S-3107 | Kenmore | S-3107 |  |  | - | Split-Phase | 1/4 | 1750 | 6 | 110 | 60 | 1 | Oilite | 1/2" | Flat | ? | Oilite | none | - | _____5____ |  |  |  |  | 
				
						| S-3140 | Companion | S-3140 |  |  | 6"x3/4" | Split-Phase | 1/4 | 1750 | 4 | 110 | 60 | 1 | ball | 1/2"-24 | - | ? | ball | 1/2"-24 | - | _____5____ |  |  |  |  |