| 摘要 |
In a lift wherein a carriage is raised up a mast by at least one cable, a safety device is proposed which is attached to the mast and which comprises a push member, which is urged towards the cable so as to press sideways against it, so that if the cable slackens the push member moves sideways, and a safety switch, which is so positioned that when the cable becomes slack the push member in its movement sideways actuates the switch.
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