Famous Clock Hang
A stuntman had verified after Lloyd's death that Lloyd performed the majority of the stunts himself on the rigged facade over a small platform, which was built near the rooftop's edge and still had to be raised a great height to get the proper street perspective for the camera. The size of the platform did not offer much of a safety net, and had Lloyd fallen, there was the risk he could have tumbled off the platform. Lloyd first tested the safety precautions for the clock stunt by dropping a dummy onto the mattress below. The dummy bounced off and plummeted to the street below.
That's why he earned the Best Stunt Award for 1923. http://www.beststuntaward.com/2013/01/1923-best-stunt-award.html
Donovan Montierth
Brothers' Ink Productions