. The Street railway journal . anying illustration shows a new form of ohm-meter which is being placed on the market by Machado &Roller, the licensees under the Hanchett and Sage patents. Aswill be seen, this differs from the old form in having added agalvanometer and an induction coil. Two switches are alsoprovided, with whose aid either the telephone receiver or thegalvanometer may be used as current detecter at will and theother, which applies either direct current from the batteries oralternating current from the secondary of the induction coil,at will. The galvanometer is of the DArsonval
. The Street railway journal . anying illustration shows a new form of ohm-meter which is being placed on the market by Machado &Roller, the licensees under the Hanchett and Sage patents. Aswill be seen, this differs from the old form in having added agalvanometer and an induction coil. Two switches are alsoprovided, with whose aid either the telephone receiver or thegalvanometer may be used as current detecter at will and theother, which applies either direct current from the batteries oralternating current from the secondary of the induction coil,at will. The galvanometer is of the DArsonval form, unaffected byexternal magnetic influences, well balanced so that care inlevelling is not required and of a sensibility even superior tothat of the telephone receiver. It is, of course, also unnecessaryto place the meter in any particular meridian in order to bringthe galvanometer needle to zero. The galvanometer is a valuable adjunct in Ibal it enables tlcset to be used where there is too much noise to make the eni-. COMBINATK )N OHM JtEl ER are often too nois}- to allow of the most accurate results withthe teleplione receiver alone. ♦^^ No longer are the private electric railway cars to be confinedto the presidents and other officers of street railways, for areport from North Adams, Mass., which there is no reason todoubt, says that a wealthy resident of the Berkshire district,having first made the necessary arrangements with the streetrailway companies in that part of Massachusetts, is to haveIniilt for his own ])rivate use the costliest trolley car in theUtiited States. 678 STREET RAILWAY JOURNAL. [Vol. XXL No. i8. A NOVEL COMBINATION Within the past few weeks the J. G. Brill Company hasshipped to the Washington W^ater-Power Company, ofSpokane, Wash., sixteen cars, which are a combination of thebuilders patented convertible and Narragansett types. Somefour years ago, when the Brill Company first commenced tobuild this form of convertible car, the Washington W^ater-P
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
