. Electrical world. e gong when moving in one direction and the other when moving in theopposite direction. WIRELESS SIGNALING SYSTEM; Cornelius D. Ehret, Ardmore,Pa. App. filed Nov. 15, 1902. Consists in increasing the current of thereceived energy after having been transformed into the energy of currentsin the receiving circuit. WIRELESS TELEGRAPH RECEIVER; Lee De Forest, New York,N. Y. App. filed June 4, 1903. A magnetic detector for use with a duplexsystem whereby waves of other character than those for which the ap-paratus is designed, will not injuriously affect the rec
. Electrical world. e gong when moving in one direction and the other when moving in theopposite direction. WIRELESS SIGNALING SYSTEM; Cornelius D. Ehret, Ardmore,Pa. App. filed Nov. 15, 1902. Consists in increasing the current of thereceived energy after having been transformed into the energy of currentsin the receiving circuit. WIRELESS TELEGRAPH RECEIVER; Lee De Forest, New York,N. Y. App. filed June 4, 1903. A magnetic detector for use with a duplexsystem whereby waves of other character than those for which the ap-paratus is designed, will not injuriously affect the receiving apparatus. ART OF WIRELESS TELEGRAPHY; Lee De Forest, New York,N. Y. App. filed June 4, 1903. The method of sending a warning signalconsisting in emitting a recurring series of high frequency waves varyingboth in their spark frequencies and in their continuity in accordance witha predetermned cycle, and in translating the waves into audible sound. 749,387. AUTOM.^TIC NON-INTERFERING REPEATER FOR FIRE. ALARM CIRCUITS; Wm. H. Kirnan, Bayonne, App. filed Oct. Non-interference magnets corresponding with the street-bo-x mag-nets, prevent the operation of the repeater by any one of the street mag-nets while under the control of any other of them. BOND FOR CONDUITS FOR ELECTRIC WIRES; George , New York, N. Y. App. filed May 7, 1901. A corrugated metal strapembracing the joint of conduit section?. ELBOW FOR CONDUITS FOR ELECTRIC WIRES; George , New York, N. Y. App. filed May 7, 1901. The cover of the el;bow is confined by lugs located at intervals around the curve and bent overthe edge of the cover. 749,399- ALTERNATING CURRENT RELAY; Greenleaf W. Pickard, Ames-bury, Mass. App. filed Aug. 21, 1903. A novel electro-magnetic movementactuated by alternating currents and employing three pole pieces, one ofwhich is movable between the other two, and a coil embracing the mov-able pole and one of the other two pole pieces, the object
Size: 2229px × 1121px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectelectri, bookyear1883
