A Life in the Balance (1915)

King attempts to tighten the brake of a freight car standing near the summit of a steep grade at Lone Point. Suddenly, the brake chain snaps and the train commences to roll down hill. Helen sees King's peril, rides to a point just before a curve, crawls hand over hand across a rope which she has stretched across the track, and snatches King from the car moments before the car is dashed to pieces as it leaves the rails of the curve.