. Electric railway journal . apacity of 8 gills. For motorsabove 60 hp., the type DD oiler, having a 31-in. x and a capacity of 12 gills of oil, is furnished. Electric Power at a Million Volts SUCCESSFUL generation of electric power at morethan 1,000,000 volts at commercial frequencies hasjust been accomplished at the High Voltage EngineeringLaboratory of the Pittsfield Works of the General Elec-tric Company. In the course of the experiments thegap spacings for sphere and needle spark gaps werecarefully checked up and prolongation of existing curves(750,000 volts and below) wer
. Electric railway journal . apacity of 8 gills. For motorsabove 60 hp., the type DD oiler, having a 31-in. x and a capacity of 12 gills of oil, is furnished. Electric Power at a Million Volts SUCCESSFUL generation of electric power at morethan 1,000,000 volts at commercial frequencies hasjust been accomplished at the High Voltage EngineeringLaboratory of the Pittsfield Works of the General Elec-tric Company. In the course of the experiments thegap spacings for sphere and needle spark gaps werecarefully checked up and prolongation of existing curves(750,000 volts and below) were found correct up to1,100,000 volts. Arc-over tests were also made on strings of standard10-in. suspension insulators up to 1,100,000 volts. Thelaws of corona were checked at similar potentials andfound to hold. A short transmission line was testedfor corona conditions and results indicated that a lineusing 4-in. diameter conductors or larger would benecessary at 1,000,000 volts. 782 Electric Railway Journal Vol. 58, No. 18. Edge View of a PerforatedDouglas Fir Tie Machine Makes Pre-Treatment Incisions in 500 Ties per Hour \ AMACHINE for making incisions in ties to securethe maximum penetration of a preservative that isapplied later has been operating in the lumber yard ofthe Charles R. McCormick Company at San Diego, is the same machine described in the Electric Railway Journal for April30, 1921, page 819, but asset up at San Diego the ar-rangement is such that tiesare handled very rapidly. Instead of a greased plankformerly used in conveyingties to and from the ma-chine a motor-operated chainconveyor is now employedand the crew consists of fourmen for unloading ties, onefor watching the chains, onemechanic and four men forloading ties onto cars. This makes ten men in this arrangement 3,600 ties can be handled ineight hours. As about an hour each day is lost inswitching cars to and from the machine, the actualmaximum rate of passing ties through the machine
Size: 1554px × 1607px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
