Word: vacuum
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Dates: during 1930-1939
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...Interior Department added $900,000 to the $600,000 already spent at Reedsville. Fifty houses are occupied and ten of a projected 140 more are being built. Though Congress ungraciously squelched Mrs. Roosevelt's plan for a postoffice-equipment factory there (TIME, March 12), a government-built vacuum cleaner assembly plant, which will be leased to a private firm, is within three months of completion...
...Free was demonstrating a new amplifying device which he and N. Y. U.'s Carl Johnson had developed. The microphone frame was vertically dipped in a cup of weevily wheat which had previously been warmed to rouse the larvae to activity. The vacuum tubes were specially constructed to furnish a high constancy of current flow, eliminate all noise except the minute munchings of the weevils in their microcosms, and the whole was enclosed in a soundproof, rubber-mounted metal case. When a container of wheat free of weevils was substituted for the infested grain, the apparatus remained silent...
Hudson's specialties for 1935 are all-steel roofs and a power-vacuum gear-shifter called the "electric hand." Attached to the steering column directly under the wheel is an instrument connected with magnets on the transmission. A flip of the ringer selects the desired shift. Then, when the clutch is depressed, a mechanism on the transmission, actuated by the manifold vacuum, shifts the gears. If an optional automatic clutch is used, the shift occurs when the foot is raised from the accelerator. Thus in traffic the "electric hand" may be set at second speed before a shift...
...Secretary Charles Greeley Abbot of the Smithsonian Institution, famed authority on solar radiation. Dr. Abbot's best previous sun cooker, with which he and Mrs. Abbot once cooked all their food for three months, attained temperatures as high as 365° F. The new one, which has double vacuum jackets on the oil pipes where the sun's rays are focussed, gets...
...centrifuge developed by Professor Jesse Wakefield Beams of the University of Virginia with the turbine operated by compressed air, the rotor turning in a vacuum. Rim speeds of 2,000 ft. per sec. and centrifugal forces 900,000 times gravity have been attained...