Thomas Inch and the Inch Dumbbell

Thomas Inch (1881-1963) was a famous weightlifter from England. He is most famous for having a 172 pound dumbbell that nobody else could lift off the floor with one hand. He would offer large sums of money to anyone that could lift it. It is possible, however, that his act was a scam, as he had 4 dumbells that looked the same but were different weights (bait and switch?) and he never challenged a handful of lifters that were considered stronger than him. He was also very careful in how he phrased his own lifting of the weight as he never really mentioned putting it overhead with just one hand.
You can read an interesting biography of his life (in multiple pages)
Part 1
Part 2
Part 3
Part 4
Part 5
Part 6
Part 7
Part 8