Who built that "supinator" Rube Goldberg?
Vince discussing it -
"Here is the first image online of the biceps-supinator. This was invented by myself and built totally by myself in my engineering factory. I tried to sell the design to Nautilus and Cybex but they were not interested. So this machine has cost me over $100,000 to patent and build. Surely it is the most expensive machine ever installed in a gym.
This machine was conceived in 1986, and first conception on paper was in 1991. I obtained patents from the USA, Canada, Great Britain, Germany and Australia. You have to apply to each country. Then you have to pay thousands of dollars per year to maintain those patents.
I wouldn't patent anything in the future! I built the first version in 2001 and then modified it several times since. The last major surgery occurred last year. I am quite pleased with this machine. There are many adjustments and it really is a complex machine with lots of angles needed. It works, though! Lots of stainless steel on the prototype. I will paint it silver soon.
Even Arthur Jones was unable to build this machine. It is undoubtedly the most complicated bodybuilding machine with weight stacks that has ever been installed in a gym. When used properly it can result in an absolutely brutal biceps workouts. You can twist the arms and get a resistance. Each arm can be trained separately, too. The curl plates are 20 pounds and the supination plates are 5 1/2 pounds."
Taken from -
http://www.drdarden.com/readTopic.do;jsessionid=108635224262976E945AE33660BD04BF.hydra?id=441355 .