. Electric railway journal . and filed. A finishing cut was taken to bringthe ring to the proper diameter, so that bands could beshrunk on, as previously described in this article. These machines have been running for several yearssince the bands were shrunk on and have given excellentresults. The cost of doing this work was very small, asthe scrap turnings and borings were sold for a pricethat went a great way toward reducing the cost of re-newing the collector rings. Rail-Grinding Practice of the Bay StateStreet Railway The practice of the Bay State Street Railway in build-ing up rail joints
. Electric railway journal . and filed. A finishing cut was taken to bringthe ring to the proper diameter, so that bands could beshrunk on, as previously described in this article. These machines have been running for several yearssince the bands were shrunk on and have given excellentresults. The cost of doing this work was very small, asthe scrap turnings and borings were sold for a pricethat went a great way toward reducing the cost of re-newing the collector rings. Rail-Grinding Practice of the Bay StateStreet Railway The practice of the Bay State Street Railway in build-ing up rail joints for the last two years has been greatlyimproved by the use of Seymour portable electric railgrinders and Indianapolis portable electric of the grinders is shown in an accompanying illus-tration. By this means track which would otherwisehave required costly repairs has been put in good condi-tion at a small cost. A hard-center frog, built up with the welder, hasbeen ground 3/16 in. to the true surface of the rail. TYPE OF PORTABLE RAIL GRINDER USED BY BAY STATE STREETRAILWAY over a length of 12 in. in about fifteen minutes. Anaverage depression of 3/16 in. caused by battered andpounded joints has been removed in about the samelength of time by grinding 24 in. on either side of thejoint. The average cost of grinding a repaired joint whichis 12 in. long and % in. above the surface of the rail has July 1, 1916] ELECTRIC RAILWAY JOURNAL 31 been 25 cents. As many as twenty-eight rail joints, 8to 20 in. long, built up with manganese steel, have beenground to the required level in a single working day. These Seymour grinders are now used on the follow-ing divisions of this road: Lowell, Lawrence, Lynn,Salem, Chelsea, Fall River and Brockton. This grinderwas perfected and patented by E. P. Seymour, road-master of the Lowell division of the Bay State StreetRailway system. Steel Terminal Casing IncreasesStrength of Rail Bond Increased mechanical strength in conjunction with a
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