Recent Blogs
Horse-power Hoisting Drum Mechanism: How a Mining Horse Whim Hoists Ore From a Shaft
Horse-power hoisting drums lifted ore from shallow shafts using horse-driven whims. See the geometry, sizing math, and real Cornish and Appalachian examples.
Centrifugal Safety Catch for Hoisting Drums: How It Works, Parts, Formula & Uses Explained
How a Centrifugal Safety Catch for Hoisting Drums works — the overspeed pawl mechanism that arrests runaway mine cages and elevator drums before disaster.