. The Street railway journal . the Minister of Public Works, at Tokio. 724 STREET RAILWAY JOURNAL. [Vol. XV. No. 10. Electrical Measuring Instruments The accompanying engravings show two of a series of electricalmeasuring instruments manufactured by James White, of Glas-gow, under patents granted to Lord Kelvin. Mr. White makes aspecialty of all kinds of electrical measuring instruments, includ-ing ammeters for direct, alternating or multiphase circuits, of thedial or edgewise type, with 5-in., 7T,<-in. or 10-in. scales. These have a stout asbestos cord (B) running through their center from
. The Street railway journal . the Minister of Public Works, at Tokio. 724 STREET RAILWAY JOURNAL. [Vol. XV. No. 10. Electrical Measuring Instruments The accompanying engravings show two of a series of electricalmeasuring instruments manufactured by James White, of Glas-gow, under patents granted to Lord Kelvin. Mr. White makes aspecialty of all kinds of electrical measuring instruments, includ-ing ammeters for direct, alternating or multiphase circuits, of thedial or edgewise type, with 5-in., 7T,<-in. or 10-in. scales. These have a stout asbestos cord (B) running through their center from end to end. The oblong steel frame (C), provided with suitablepins projecting from either side, furnishes supports for the roundgrooved porcelain insulators (D) on which the coils are asbestos cords are drawn taut and fasten on their respectivesides to the terminal porcelains at either end, to which also thecoils are made fast independently of each asbestos cord furnishes a continuous support throughout. OVERTYPE AMMETER NEW ELECTRIC CAR HEATER appliances have no temperature error, and are made in sizes tomeasure up to 1000 amps. He also manufactures the Kelvin directreading wattmeters for direct, single-phase or multiphase systems,and the Kelvin millicellular electro-static voltmeter. The instru-ments illustrated are respectively a 5-in. scale edgewise overtypeamperemeter, and a 12-in. scale, moving coil, voltmeter. Improved Type of Car Heater The latest and improved type of American Electric Corpora-tion panel heater, which is manufactured and sold by the SimplexElectrical Company, of Boston, is illustrated herewith. The viewexposes the details of construction, which are as follows:
Size: 2453px × 1018px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
