by Paul Hai
(Mount Isa, Queensland, Australia)
Sumerian Wheel
Many Sumerian wheels are a three part composite construction of timber planks. This type of wheel design dates from about 5500 BC. Note the shape of the outer two parts and study the Four Lobe Pinion Pulley. The construction of the Giza Pyramids about 2600 BC required a step-walking device which positively engaged each layer of construction progressively to the point of final construction.
Comments for Sumerian Wheel and Ancient Egyptian Four Lobe Pinion Pulley.
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