Word: arcs
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Dates: during 1920-1929
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...Mass., to the manufacturing of electrical equipment, electricity was in little practical use. Samuel Finley Breese Morse (1791-1872) had shown in 1844 that it could be used for telegraphy. In 1876 Alexander Graham Bell (1847-1922) applied it to telephony. Charles Francis Brush (1849-) invented the Brush electric arc light in 1878. Thomas Alva Edison (1847-) shortly was to develop a clanking generator and the incandescent lamp, and Elihu Thomson (1853-) his 500 and more industrial applications...
Giuseppe Verdi, 1813-1901; Jeanne D'Arc, Overture (1845); II Trovatore Selection (1853); La Forza Del Destino, Overture (1862); Aida, Fantasia (1871); Othello, The Tempest (1887). Eugen Onegin, Fantasia Tchaikovsky Slegfried, Forest Murmurs Wagner Carmen, Toreador Song Bizet Goyescas, Intermezzo Granados Samson and Delilah, Bacchanale Saint-Saens
Monday. At Geneva, the Assembly of The League of Nations met beneath the glare of "movie arc lights," and chose Sir Austen Chamberlain, the British Foreign Secretary, to chairman a committee created to pass upon Germany's "credentials" and report (perfunctorily, of course) upon the eligibility of Germany to enter the League...
Comparison of the estimates for riveting with the actual figures for the welding was overwhelmingly in favor of the new method. In labor costs it had saved 23%. Where riveting-gangs of four men would have been required, single operators had manipulated portable arc-welders, thus interfering less with other workmen. The time saved was over 20%. Strength tests showed the welded joints to be 100% strong, as against a 65% to 70% average for riveted joints?that is, the welds were as strong as the girders they joined, often stronger under test stresses. Rivets shear or rip out their...
Electric welding is not new to machine shops, especially locomotive works, but for structural steel work a new type of welder had to be evolved. The "Stable-Arc" welders used by the Morgan Co. were built by the Lincoln Electric Co. of Cleveland and mounted on hand trucks. The process: a high frequency arc up to 300 volts is applied to a bar of steel corresponding to a bar of tinsmith's solder, which is pressed along the crevice between two surfaces that are to be joined. The bar is melted, as are both the girder surfaces along the line...