. Electrical world. retts, Springfield, filed July 14. 1903. A switch point in the trolley wire can be movedat will by the motorman operating certain electric switches. 757,925. ELECTRIC SWITCH; Charles F. Hopewell, Cambridge, Mass. Oct. 7. 1903. Details of a tappet switch for trolley wires. 757,942. AUTOMATIC COMMUT.\TOR; Julien Henri Mercadier, Louvres,France. App. filed Oct. 16. 1903. Details. STORAGE BATTERY; Abraham V. Meserole, New York, N. filed July 13, 1903- (See page 821.) 757,958. ELECTRIC ARC L.\MP; Isaac W. Percival, St. Louis. Mo. App-filed Jan
. Electrical world. retts, Springfield, filed July 14. 1903. A switch point in the trolley wire can be movedat will by the motorman operating certain electric switches. 757,925. ELECTRIC SWITCH; Charles F. Hopewell, Cambridge, Mass. Oct. 7. 1903. Details of a tappet switch for trolley wires. 757,942. AUTOMATIC COMMUT.\TOR; Julien Henri Mercadier, Louvres,France. App. filed Oct. 16. 1903. Details. STORAGE BATTERY; Abraham V. Meserole, New York, N. filed July 13, 1903- (See page 821.) 757,958. ELECTRIC ARC L.\MP; Isaac W. Percival, St. Louis. Mo. App-filed Jan. 23, 1899. Two sets of carbons placed in one lamp and eachdesigned to take 110 volts in series on a 220-volt circuit. THERMAL CUT OUT; Michael Setter, Chicago, HI. App. filed , 1903. Two telescoping members are held normally apart by a body ofsolder. THERMAL CUT OUT; Michael Setter, Chicago, 111. App. filedAug. 5. 1903. Two members normally pulled apart by a spring are heldtogether by
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectelectri, bookyear1883
