Science: Technology Notes

Among recent gifts of science to war, industry, other human pursuits:

Nylon bearings. Advantages, claimed in a Du Pont patent: no lubrication required; less friction, vibration, heat; longer wear and ability to carry heavier loads than bearings made of bronze, brass, babbitt metal. In the past, bearings have been made of synthetic resins, but they had to be reinforced with fabric fillers, required water lubrication.

Explosive rivets, developed by Du Pont after the basic invention in 1937 by two employes of famed German Plane Builder Ernst Heinkel. A high explosive nests in a cavity at...

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