Run-back safety mechanism for conveyor apparatus ...
An upper run 1 (FIG. 1A) of a conveyor belt is looped about an upper transport drum 3, to form, after looping, a lower run 2, positioned beneath the upper run 1. The drum 3 is secured to an driven by a shaft 4 which is, in turn, driven by a motor 5 through step-down gearing 6. A return stop or run-back safety mechanism 7 is interposed between ...
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