Buster Keaton and the Rising Bridge: Ten Seconds of Impossible Timing

In this imagined 1927 silent-comedy sequence, Buster Keaton is a lock keeper with one very ordinary assignment: oil a stubborn hinge pin on a bascule bridge.
It should take only a few seconds.
Instead, one accidental movement sends the entire bridge mechanism into action. The locking pin slips loose, the counterweight begins to descend, and the bridge deck slowly rises beneath Keaton’s feet. As if that were not enough, a coal barge is already drifting toward the opening.
Keaton does not panic.
He simply adjusts his footing to match the increasing angle of the bridge. Each step seems perfectly calculated, although his expression suggests he considers the whole thing little more than an inconvenience.
Then comes the moment that defines the stunt. The barge’s tall smokestack moves directly toward him. Keaton takes one perfectly timed step across the widening gap, allowing the stack to pass between his boots.
At almost the same instant, the bridge’s counterweight arm sweeps behind his coat.
Both miss him by inches.
The machinery finally stops.
Keaton looks down, notices a tiny drop of oil on his tie, wipes it away, and carries on as if nothing unusual happened.
That contrast—enormous danger followed by an almost meaningless reaction—is pure Keaton-style comedy.