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A combined door lock and hand-chain lock for lifts operated by means of hand-chains or hand-ropes
A combined door lock and hand-chain lock for lifts operated by means of hand-chains or hand-ropes
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机译:组合门锁和手链锁,用于通过手链或手绳操作的升降机
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摘要
188,412. Jordan, H. Aug. 17, 1921. Chain stops and holders; rope grips.-A chain or rope a is gripped between a fixed member u and a tongue v pivoted there to at v1.
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