. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . to be used in laying out thebrasses for boring. Set a tram to thelength of the rod, then with one pointin the center of, say the black brass,draw a line across the center in the otherbrass. Suppose this line to be Ye, in. the brasses wearing themselves loose inthe strap, they should fit it tight enoughto require three or four blows of a handhammer to drive it to its place in thestrap, using a block of hard wood be-tween hammer and brass. But the endsof the strap should not be sprung openmore
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . to be used in laying out thebrasses for boring. Set a tram to thelength of the rod, then with one pointin the center of, say the black brass,draw a line across the center in the otherbrass. Suppose this line to be Ye, in. the brasses wearing themselves loose inthe strap, they should fit it tight enoughto require three or four blows of a handhammer to drive it to its place in thestrap, using a block of hard wood be-tween hammer and brass. But the endsof the strap should not be sprung openmore than 1-32 in. when the brass ishome. When strap rods are used for siderods, the brasses should be 1-32 than the pins, and have 1-64 motion. After boring out and fac-ing the sides, take the brasses out of thestraps and fit them to the pins, beingcareful to have no bearing on the fillets. Solid side rod brasses should be turnedenough larger than the hole in the rodto require lYi tons per inch of the out-side diameter of the brass to press it intothe rod. When the brasses are bored. Railway ^ Lucvmotive JEnyineerinj ^ rig. 4 1— a 1 ^ « I Fig. » J iff. 1 back of the center of the brass, thenmove the back center 1-16 in. aheadand draw another line with the tramacross the center in the front brass. Thisline will now be i-i6 in. instead of]4, in. back of the center of the frontbrass, but the difference between theright length of the rod and the distancebetween the centers of the brasses, hasbeen divided between both ends of therod. With a pair of dividers scribe a circlesomewhat larger than the pin aroundthe centers, for use when setting thebrasses up in the lathe or boring mill. Main rod brasses should be bored 1-64in. larger than the pin and given 1-64in. lateral or side motion, being carefulto have the flanges the same thicknesson each side of the strap. To prevent out before putting them in the rod, al-lowance should be made for the compres-sion due to fo
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
