. The Street railway journal . further thatthe rail is weakened far less by thepunching necessary for this bond thanby the drilling of the two holes neededfor ordinary double bonding, since themetal removed from the rail is takenfrom a point where it has little valuein supporting the rail-head, and whereentire dependence is placed on the rail-joint to hold up the rail. To double-bond with riveted terminals requiresdrilling two 7/i-in. holes in the line ofshear through the bolt holes, while thehorizontal dimension of the punchingfor this bond, added to the width orthe hole for the cap screw, is
. The Street railway journal . further thatthe rail is weakened far less by thepunching necessary for this bond thanby the drilling of the two holes neededfor ordinary double bonding, since themetal removed from the rail is takenfrom a point where it has little valuein supporting the rail-head, and whereentire dependence is placed on the rail-joint to hold up the rail. To double-bond with riveted terminals requiresdrilling two 7/i-in. holes in the line ofshear through the bolt holes, while thehorizontal dimension of the punchingfor this bond, added to the width orthe hole for the cap screw, is less thanthe diameter of a single %-in. 3 is a horizontal section throughthe bolt holes and angle-bars, show-ing the application of the bond to the go-lb. T-rail. Shop tests of these bonds indicate great life, both under hori-zontal bending, such as would be produced by the expansion andcontraction of the rails, and under vertical deflection of one end,such as would be due to a loose joint. Under expansion and con-. 2. —CONSTRUCTION AND APPLICATIONOF BOND
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
