Word: spool
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Dates: during 1950-1959
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...Spooler. The "two-spool" engine, now in fashion both in the U.S. and Britain, solves this problem by means of two compressors, each driven by its own turbine through concentric shafts. The first compressor, which spins comparatively slowly, compresses the air part way. Then the second compressor, spinning faster, takes over and crams the air into the combustion chambers at much higher pressure (up to twelve to one) than could be reached by a single compressor alone. The result is to increase the power of the engine and to reduce its fuel consumption per Ib. of thrust by as much...
...over 200 boys with a number or symbol on each. Mark IV is nearing completion and full use. Tests are now being conducted with the new machine. Multi-colored lights flash, a complex of gears spins, and soon an electric typewriter types the answers on a white spool of paper...
...ambition of Donald Grey Barnhouse, the bustling pastor of Philadelphia's Tenth Presbyterian Church. It does not matter to him that these illustrious preachers are all dead or that some of their audiences may number no more than 15 people. The trick will be turned by a spool of plastic tape and a standard 110-volt light socket. To distribute what he calls Portable Church Services, Barnhouse has turned to the tape recorder...