. Locomotive engineering : a practical journal of railway motive power and rolling stock . .Locomotive Engineering Fig. 3 BALANCED VALV 10. senses of the mechanic as nothing lessthan truth will appeal. The necessity of close joints, as at b,Fig. 2, would have suggested to most me-chanics a fine scraping of the contact sur-faces. It suggested nothing of the kindto Richardson. Good planing was hisentire reliance. Neither scraping nor fil-ing was countenanced. A packing pieceor a groove would plainly enough showthe tool-marks due to the feed, which tellthe mechanic plainer than long argument. Loc
. Locomotive engineering : a practical journal of railway motive power and rolling stock . .Locomotive Engineering Fig. 3 BALANCED VALV 10. senses of the mechanic as nothing lessthan truth will appeal. The necessity of close joints, as at b,Fig. 2, would have suggested to most me-chanics a fine scraping of the contact sur-faces. It suggested nothing of the kindto Richardson. Good planing was hisentire reliance. Neither scraping nor fil-ing was countenanced. A packing pieceor a groove would plainly enough showthe tool-marks due to the feed, which tellthe mechanic plainer than long argument. Locomotive Engineering Fig. 4 BALANCED VALVE. that the surface is a succession of ridgesand depressions. These ridges and de-pressions are in the direction of the lengthof the packing strips and groove ridges are higher than the generalsurface. If the effort was made to sur-face these parts, they must first be re-moved. Richardsons argument was thata ridge—a line—bearing the full length ofa packing strip would prevent leakagewhile the entire surfaces were coming. In-slight wear, into intimate contact. Aswas rather common with him. he wasright. I should think. It is evident that,from a slight springing of the parts fromheat and pressure, the entire surfaceswould not at once come fairly together,no matter how much pains were taken to that end. It would be i Ii ign or workmanship, 01 both, that would notpi i inn i me Inn to comi to a I aring verysoon; one hue, as tin- mechanic speaks oflines. Richardsi pposed the u ■<• of a mill-ing machine for cutting the groo In
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Keywords: ., bookcentury1800, bookdecade1890, bookidlocomotiveen, bookyear1892
