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682 39. Anwendungen der Elektricität. or other articles. Method of electric bending and straightening (unter Erwärmung). U. S. P. Nr. 455420, 455421, 458115. Off. Gaz. 56, 41, 915. Western Electr. 9, 35, 116. D. B.-P., CI. 49, Nr. 57 097. j’atbl. 1891, Auszüge 673. El. Thomson. Vorrichtung zum Verbinden von Metallstücken mit einander auf elektrischem Wege. D. R.-P., CI. 49, Nr. 54 709, 55140. Patbl. 1891, Auszüge 106, 178. ZS. Ver. D. Ing. 1891, 173. — Verfahren zum Schweissen von Metallen auf elektrischem Wege (Schweissung in Abstufungen, elektrische und mechanische Bearbeitung abwechselnd). D. B.-P., CI. 49, Nr. 58 737. Patbl. 1891, Auszüge 999. ZS. Ver. D. Ing. 1892, 51. -— — Manufacturing chains by electric-welding. Burr preventer for electric-welding machines. U. 8. P. Nr. 449 356, 449 357. Off. Gaz. 54, 1793. — — Method of electric welding. U. S. P. Nr. 449 836, 451345. Off. Gaz. 55, 59, 539. Engi. Pat. 1890, Nr. 13 631. Electr. Bev. 28, 542. — — Electric welding in a carriage factory at Harvey, 111. Western Electr. 8, 315. The first electric pipe-welding plant in Chicago (Thomson-Houston). Western Electr. 9, 15. Thwaite. On the economics of electrofusion. Engin. 51, 503. Werndley u. Foster. Improvements in the methods and appa- ratus employed in the heating, melting and working of metals and metalloids by the application of electric currents. Engi. Pat. 1889, Nr. 19 813. Electr. Bev. 28, 94. Van der Weyde. Le forgeage electrique. L’Electr. Paris (2) 2, 102. Wiegand. Method of and apparatus for electric welding. U. 8. P. Nr. 456 541. Off. Gaz. 56, 393. Heating houses by electricity (Controverse Willcox-Whigham). Western Electr. 9, 121. Willcox. Advances in electric heating. Electr. New-York 12, ui. Wirsching and Schefbauer. Electric-arc lamp. U. S. P. Nr. 461 659. Off. Gaz. 57, 361. Wood. Vorrichtung zur Beseitigung des Grates an mittels Elek tricität geschweissten Werkstücken u. dergl. D. R.-P., CI. 49, Nr. 57434. Patbl. 1891, Auszüge 700. Engi. Pat. 1890, Nr. 20510. Electr. Rev. 29, 92. Wright. Electric heater. U. S. P. Nr. 464 055. Off. Gaz. 57, 1150. Zipernowsky. Elektrischer Löthkolben. D. B.-P., CI. 49, Nr. 54 885. Patbl. 1891, Auszüge 107. ZS. Ver. D. Ing. 1891, 261.