. Electrical world. iller, Jr., Pittsburg. Pa. App. filedJan. 7, 1904. A magnet operating an interrupter is in circuit with all ofthe primaries of a number of induction coils, supplying the spark re-spectively to the cylinders of a multiple-cylinder engine. 1,681. ELECTROMAGNETIC DEVICE; Eugen K. Muller, Zurich,Switzerland. App. filed Sept. 20, 1902. Details of an alternating-currentmagnet adapted for massage purposes. 1,689. ELECTRIC SELECTIVE APPARATUS; Frank D. Pearne andCharles L. Krum, Chicago. 111. App. filed Feb. 3, 1902. A sensitive relayby which one or two or three branch circuits may
. Electrical world. iller, Jr., Pittsburg. Pa. App. filedJan. 7, 1904. A magnet operating an interrupter is in circuit with all ofthe primaries of a number of induction coils, supplying the spark re-spectively to the cylinders of a multiple-cylinder engine. 1,681. ELECTROMAGNETIC DEVICE; Eugen K. Muller, Zurich,Switzerland. App. filed Sept. 20, 1902. Details of an alternating-currentmagnet adapted for massage purposes. 1,689. ELECTRIC SELECTIVE APPARATUS; Frank D. Pearne andCharles L. Krum, Chicago. 111. App. filed Feb. 3, 1902. A sensitive relayby which one or two or three branch circuits may be closed in combinationwith a magnetic lock arranged to hold the selected branch in a closed con-dition. RHEOSTAT; Claude R. Pitrat. Amsterda8, 1903. Details. 1,694. ELECTRIC POCKET LAMP; AngelicaApp. filed Dec. 30, 1903. A flat battery casecover having a lamp which can be thrown intoPROCESS OF SEPAR.\TING ORES n, N. Y. App. filed Aug. .. Post, Boston. the vest pocket, thercuit at MAGNETIC. GANGUE; Thomas A. Edison, Llewellyn Park, N. J. App. filed May 29,1903. App. filed March 15, 1903. The small proportion of non-magneticmaterial in a body of ore is recovered by first grinding to a fineness to freethe non-magnetic particles, then adding a larger bulk of the coarser non-magnetic material, then passing the mixture through a magnetic separatorto separate the entire body of non-magnetic material and finally separatingthe coarser material from the original non-magnetic material- 762- ELECTRIC SOCKET SUPPORT; Edwin R. Gill, New York, N. filed March 14. 1902. A lamp socket having brads in its base topuncture the insulation of conductors and a central screw by which thesocket can be supported on any structure. 778. TROLLEY WHEEL RETAINER; James A. Kelpatrick, Niles, filed Dec. 19, 1903. Details. ,804. SPEED REGULATING MAGNETIC CLUTCH; Charles A. Pratt, —Electrical Water Heater. 62.—Electric Socket Support
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