Word: ft
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Dates: during 1930-1939
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...section of the Los Angeles sewer system which no live eye has seen since the city's discharge started flowing through it, 220,000,000 gal. per hr. at the rate of 3 ft. per sec., is the 6-mi. tunnel under the Del Rey Hills to the ocean. Last week Reuben Brown prepared to travel those six subterranean miles in a non-sinkable 9-ft. punt...
...prow, an under water lamp hanging overside, all served by electric storage battery, were to supply light for close inspection of the tunnel walls. All electrical connections were shielded against sparking in the presence of sewer gas whose explosive power, Mr. Brown told reporters, was such that 36 cu. ft. of it was equal to one ton of dynamite. Last week Mr. Brown made a preliminary test of his equipment. He put on woolen basketball socks, sneakers, short hockey pants. He ate a huge breakfast of hot cakes and bacon. Then he got into a rubberized suit, hung...
...dial registering the force needed. A machine with a rocking arrangement stretches sheets of shoe rubber until they tear. To test the safety-toe caps of miners' boots, a cake of paraffin is put in the toe and an iron weight dropped from a height of 4 ft. on the boot tip. If the cake shows any signs of flattening, the manufacturer makes the toe cap stronger...
...breaks. Though one test is as good as another, none really explains why an automobile bolt occasionally cracks, an airplane strut snaps, a battleship's armor plate yields. By building a machine which hits a piece of metal with the whack of a bullet traveling 1,000 ft. per sec., H. C. Mann of Watertown (Mass.) Arsenal discovered that when a piece of metal is struck a very strong blow, its molecules release some of their potential energy, help shatter themselves. Mr. Mann's machine consists of a brace to hold the test metal and a flywheel with...
...Bendix prize for the meet's longest distance flight went to Chester J. Decker of Glen Rock, N. J. On the last day of the meet he took off from Elmira, climbed to 5,500 ft., found a "street" (chain of cumulus clouds). Swinging beneath it in long, irregular parabolas from cloud to cloud, he proceeded to Ottsville, Pa., where he glided down - 146 miles from Elmira. His flight narrowly missed the U. S. record of 158 miles...