Word: shaft
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Dates: during 1930-1939
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...strikes in a radius of 25 miles, they thought they would hit producing sand at 9,000 or 10,000 ft. They "spudded in" at midnight on June 21, 1937, using a 20-in. bit. In drilling for oil, the bit is carried on a shaft of hollow pipe, in 30-ft. lengths screwed together. A powerful steam engine on the surface spins the pipe and the bit. When a bit needs changing, all the pipe must be snaked out of the hole and then lowered again by the derrick. The pipe is kept full of mud to counteract...
...North Side. A popular teacher of physics and botany at Mundelein is Sister Mary Therese, member of the Order of the Blessed Virgin Mary, daughter of a Chicago contractor. When Mundelein moved into its skyscraper in 1930, it was seen that only two of its three elevator shafts would be needed for vertical traffic. This gave bespectacled Sister Mary, who was then in her late 205, an idea. Last week, in the idle elevator shaft, installed and ready to operate was a 120-foot Foucault pendulum, the longest in existence...
Sister Mary persuaded her superiors to provide the money for a pendulum to occupy nine stories in the unused shaft. The chromium-plated bob weighs 30 pounds, makes one back-&-forth oscillation through an arc of about six feet every twelve seconds. At the centre of the swing, the bob passes close to a waxed indicator table, and by means of a high voltage transformer an electric spark is passed from the bob to the wax, makes a mark showing the amount of rotation every hour-or oftener if desired for demonstration purposes. To start the pendulum going, without torque...
They sank a sample shaft in Maryland, where 35 trained interviewers bearded the beardless at home, on street corners, in drugstores, in dance halls. Their 13,528 storytellers were a representative cross section of the nation's 20,000,000 youth...
...almost dead from a complete fracture of the left lower leg and from loss of blood through many lacerations. To get to his patient, 5-ft. 11-in., 200-lb. Dr. Wassermann had to walk along a steel girder, eight inches wide, atop the 16-story shaft. On that dizzying perch he had to amputate the leg, disentangle the man from the cables...