I found this nifty 1930s British industrial film from Morris Motors talking about engine manufacturing. I like seeing the hard tooling and modified machine tools they used to use. Occasionally you see something downright dangerous, and I love that kind of thing.
At about minute 16:35 they show, but don't mention, the clutch assembly going together and it is obviously a cork clutch. I thought this was an exclusive Hudson gimmick. Who else used this type of thing?