Bombing Ball Bearing Targets in WW2 Posted on 2 Apr 16:56
Black Thursday, was a World War II air battle for ball bearings that took place on 14 October 1943, over Nazi Germany between forces of the United States 8th Air Force and German Luftwaffe.
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Black Thursday, was a World War II air battle for ball bearings that took place on 14 October 1943, over Nazi Germany between forces of the United States 8th Air Force and German Luftwaffe.
Philip Vaughan was granted a patent in 1794 for a ball bearing that sits between the axle and the wheel on a carriage. His design has the balls running inside deep grooves, and sealed in place with a stopper.