venting the fall of the cagein consequence of accident to-the hoist-ing-rope or chain. In this device theoperation of the arresting levers isassured, as they are engaged with therack instantly, in case of the breakageof the hoisting-rope, by means of acounterbalance or weight, which, whenthe cage… … ever the hoisting-rope or chain ceasesto act, the counterbalance, rope comesinto action and prevents disaster. Inthe engraving, A is the hoisting-cage orplatform ; B, the lifting chain, attachedby means of links, C, to the bell cranklevers, D, having their fulcrums at E, andprovided at the other…
Architecture
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