| http://www.w3.org/ns/prov#value | - A rope or cable drum device for lowering a weight, such as a person, from an elevated location with a controllable lowering speed, comprising a frame, axle means rigidly secured to said frame, a drum rotatably mounted on said axle means, elongated flexible means wound on said drum and having a first end to be secured at said elevated location and a second end secured to said drum, means for attach
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