| 摘要 |
A manually operable elevator consisting of a pair of tubular members telescopically interconnected, each tubular member having a manually operable brake cooperable with a rope passing through the tubular members. One of said tubular members includes a seat for the operator. To lower one's self, the operator occupies the seat and controls the rate of descent by applying one or both brakes, one brake operable by the hands, and the other operable by the feet. In ascending, the elevator is raised by alternately locking one tubular member to the rope by applying a brake while raising the other tubular member.
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