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2. Prusik - Wikipedia

   en.wikipedia.org/wiki/Prusik

   The rope to be pulled is passed through a pulley, and a Prusik is tied on the loaded side. When the rope is pulled, the Prusik rides against the pulley, and the rope slides through it; but when the rope is relaxed, the Prusik slides away from the pulley and grabs the rope. Thus, the combination acts as a ratchet (or Progress Capture Device (PCD)).

3. Munter hitch - Wikipedia

   en.wikipedia.org/wiki/Munter_hitch

   When a belayer needs to transfer the load from their harness to the anchor to escape the system: a rope grab (mechanical or friction knot/Prusik) is placed on the load line towards the load, rope is terminated on the rope grab (or the tails of accessory cord are used when using a cordelette with a Prusik as a rope grab) and runs back to the ...

4. Grab (tool) - Wikipedia

   en.wikipedia.org/wiki/Grab_(tool)

   A grab or mechanical grab is a mechanical device with two or more jaws (sometime clamshell-shaped), used to pick things up or to capture things. Some types include: Roundnose grab; Clamshell grab; Orange-peel grab in Dutch and German they are called poliep grijpers/ Polypengreifer = "polyp grabs". There are different ways of open/close the grabs:

5. Bulk-handling crane - Wikipedia

   en.wikipedia.org/wiki/Bulk-handling_crane

   The mechanism on chain grabs operates in the same way as on rope grabs. The chains are connected to ropes on the crane by (e.g. bordeaux) couplings which allow rotation. A linked chain requires a much small diameter pulley than the equivalent rope which makes a smaller, more compact, design of girder.

6. Heroes and heartbreak: 36 hours of hell during Helene's ... - AOL

   www.aol.com/heroes-heartbreak-36-hours-front...

   In Asheville, a 39-year-old woman and her 7-year-old son, along with her parents, had escaped to their roof and were awaiting help when the floods ripped the home apart, washing away the son and ...

7. Self-locking device - Wikipedia

   en.wikipedia.org/wiki/Self-locking_device

   The combination of a climber's body position in a fall and friction between the ascender frame and the rope provides the activating leverage for the cam to grab the rope. Fall forces generated using this device and the cam profile can be enough to damage a rope due to the high clamp loads induced by the cam lever arm.