Word: gear
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
From Pills to Gears. Reason most powdered metal parts are small is that pressures of from five to 100 tons per square inch are needed to force the minute particles close enough together to become locked into a genuine solid. Thus a solid gear with a 4-in. diameter would have a top surface of twelve square inches and might require a pressure of as high as 400 to 1,200 tons. The largest presses now in use are of 80-ton capacity, although 400-ton, 600-ton, 800-ton machines are on order. The pressure needed can be lowered...
...quieter than clangy solid metal. Besides offering these advantages, this part surprised engineers by being easier and cheaper to make from powder than by former methods. From this and similar pressed parts a wave of interest in powder metallurgy at once swept U.S. industry. First powdered-metal automotive gear appeared in the oil pump of the 1940 Oldsmobile, and this year more new parts have been made from powders...
This week the first victims in these groups packed their gear and got ready to go home. They included a brigadier general and a lieutenant colonel. How many had already got the ax, the War Department would not say. But all the Army officers in field outfits have been told that whether they stay in uniform or get out depends on the showing they make in this fall's maneuvers...
...subdued hum everywhere, far and near, as if hundreds of cars were on the roads and lanes. I was so restless . . . . I got up and dressed and went out, up the road a little way into the fields. I could hear, faintly, how car after car changed gear as it went up the steep hill out of the town towards the road that runs west. There was a most extraordinary feeling in the air as if the whole country, from end to end, was alert and waiting. The very houses and trees and hedges seemed to be crouching down against...
...fuselages should be started; then Bofors 40-mm. anti-aircraft guns should be in production. Already Chrysler's engineering department and laboratories are working 85% of their time on defense, developing a 2,000 h.p. airplane engine, a 500 h.p. liquid-cooled tank engine; a new airplane landing gear strut, etc. Half the 900 machine tools used to make the Bofors gun are being taken from the automobile assembly lines. Eleven different Chrysler divisions are supplying parts for the bombers. The 250 Army trucks that come off Dodge production lines every day represent better than half the total daily...