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Curvilinear Cylindrical Gears - May/June 1988

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Archive > 1988 > May/June 1988 > Curvilinear Cylindrical Gears

The article "Curvilinear Cylindrical Gears" appeared in the May/June 1988 issue of Gear Technology.

Summary
The curved tooth cylindrical gear is one of ancient design. Samples which date from the period of the Warring State (475-221 BC) have been excavated from archeological sites in China. One such sample is now on display in the Xi'an Clay figures of Warriors and Horses Exhibition Hall. This example is about 3/4" in diameter and made of bronze. It was used in the famous model, "Ancient Chinese Vehicle With a Wooden Figure Always Pointing to the South." Although this early gear is handmade and somewhat crude, it is a viable model.

Keywords
curvilinear gears, curved tooth gears, South Pointing Chariot

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