Democratic Sentinel, Volume 17, Number 2, Rensselaer, Jasper County, 27 January 1893 — ELECTRICAL. PROGRESS. [ARTICLE]

ELECTRICAL. PROGRESS.

S"condaky currents were discovered by . cseph Houry. I . ib • • Davidson built a:i electric car, with a speed of four miles. • T imagnetio needle telegraph pat»n e l by t ooke and Wheatstone. V hydro-electric machin.-. ma le by Ai l.istrong, first employed in 1840. Y.’hhathtokb drew plans for a oable be , ween Calais and Dover in 1840. TnuiuiKAPH .line setup on the Great YVostern llailway, England, in 1838. A device for controlling the electrio light was patented in 18 t; by rftaito. TitAN'SMiSHioN by ; u in mlated wire shown to be possible by .. uoion, 1747. Wheatstone patented his system of alphabetical pr.nting telegraph in 1841. t hcf.reect sya'em of le'egraphy devised by Lcsarge ami others about 1744. v uadav first practically used guttapercha as an insulator tor wires in 1847. I’Eiam.i.iON given by Napoleon for a cable to England, 1847. Cable laid, 1850. Bunsen’s carbons were first put into practical use in 1842. Grove’s battery in 1812.

The first line in America was laid between \Vashirtgton and Baltimore, in lads. A scheme for a channel .cable was presented to Louis Ehiiippo by Brott in IbT. I'Thst cable between Calais and Dover a .ailure, eaule cut on a rocky ridge, 1850. The olectrotype was invented simultaneously by Bpenoer an i Jacobi in 18 /. Eahaday explained in 18'.) the eleotricity generated by high-pressure steam. •V iOLVViCH, in 1812, first applied magneto- electricity to electro - plating m. tills. LuEcTitOTYriNo of wood cuts and plates for printing was first employed in 1850. Wheatstone invented his electromagnetic clock in 1840. Exhibited in London. Bi iikoeon’s experim-nts with a bar of non and the magimtic current were made in 1837. ' Wheatstone, in 18, 0, constructed a maoh.no and signaleil through four miles oi wire. 1 . IDO Wheatstone constructed ids famous electro-magnetic chronoseope and applied for patent.