old GE motor

I discovered in my pile this motor:
GE A-C Motor Model 35898 For Lighting Circuits 110V 5.2A 1 phase 1/4HP 60cy
1725 rpm It was driving an old wet slo speed grinding wheel through a set of 4 jury rigged pulleys. What is strang about it is under a cover on the top is an inductor. Quite sure factory supplied. What is the inductor for? It is of laminated construction and is wired in to the motor. It appears to be of vintage 1920/1930.
Any ideas? What the purpose of the inductor was? CP
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On 05/08/17 03:19, MOP CAP wrote:

At a time before standard in-wall sockets, folks used to plug many appliances into the lamp socket.

Is there a centrifugal switch?
See "Resistance split-phase motor induction motor" in...
https://www.allaboutcircuits.com/textbook/alternating-current/chpt-13/single-phase-induction-motors/
--
Adrian C

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