. The Street railway journal . ce of about I m (39ins.). Using an alternating pressure of 40 volts, shockscould be perceived when the distance between thenozzle and the plate was about 25 mm (i in.), thestream being 12 mm (Vz in.) in diameter. Fora pressure of 500 volts, the distance at which asensation could be perceived was 19 cm (75^ ins.),and tor 3600 volts about 3 m (10 ft.). Using thelatter pressure, persons with average sensibilitycould hardly endure the pressure at a distance of i m (39 ins.). Tests were then made with a stream 50 mm (2 ins.) in this stream 500 volts alte
. The Street railway journal . ce of about I m (39ins.). Using an alternating pressure of 40 volts, shockscould be perceived when the distance between thenozzle and the plate was about 25 mm (i in.), thestream being 12 mm (Vz in.) in diameter. Fora pressure of 500 volts, the distance at which asensation could be perceived was 19 cm (75^ ins.),and tor 3600 volts about 3 m (10 ft.). Using thelatter pressure, persons with average sensibilitycould hardly endure the pressure at a distance of i m (39 ins.). Tests were then made with a stream 50 mm (2 ins.) in this stream 500 volts alternating could be felt at a distanceof 2>4 m (8 ft. 2 ins.), and 3600 volts at 8 m (26-ft.). The latterpressure could hardly be endured at a distance of 4 m (13 ft.). Itwas also found that for the same distance the effect was morepronounced the less the velocity of the water. This is explainedity the fact that then the stream is more solid. These experimentsshf)w that tlie danger with continuous currents is almost nil, while. BABBITTING MACHINE, OPEN alternating currents are only dangerous at high pressures and forsmall distances. ♦♦♦ Tests on Conductivity of Streams of Water A Novel Babbitting Device Some very interesting experiments have been made recently atMilan, Italy, by Guido Semenza, in company with the Edison Il-luminating Company of that city, to determine to what extent theemployees of the fire department working in the proximity of trol-ley wires are exposed to danger. It is assumed that the currentfrom a live wire touched by a stream of water would follow thewater down to the nozzle held by the firemen. The experimentswere conducted in {he following manner: One of the new articles exhibited at the recent street railwayconvention was a device for babbitting the iron boxes, or shells,used for motor axle bearings. This device turns out the bearingscomplete, ready to be used, without the necessity of finishing themwith machine work, and should be particularly u
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Keywords: ., bookcentury1800, bookdecade1880, bookidstreetrailwa, bookyear1884
