A fascinating article that describes how a block and tackle (as well as levers and gears) works!
Reeving blocks to set up a double pulley system requires a little thought. A double pulley system, also known as a "block and tackle," consists of the pulleys, or blocks, and the .
Handcrafted Antique Block and Tackle/Insulator Pendant light fixture in Home & Garden, Lamps, Lighting & Ceiling Fans, Chandeliers & Ceiling Fixtures
HABA Block & Tackle kit - perfect for getting treasure up to the tree fort