Science: Gears Without Chips

Gears, high-accuracy steel parts which must take heavy punishment, are traditionally made by cutting the shape from solid metal. It is slow, painstaking work. Last week Timken-Detroit Axle Co. an nounced they had found a new way to make gears.

Before the war, Timken-Detroit, the only U.S. company making high-traction gears for all-wheel-drive trucks, had three machines, each turning out twelve pinions an hour — enough for one six-wheeler. As military trucking increased, Timken-Detroit engineers could foresee the bottle neck. They decided to try the impossible — to forge gears to the unheard-of tolerance (for forging)...

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