| 摘要 |
FIELD: manufacture of timber sleepers for railways, underground railways, tram tracks. SUBSTANCE: for manufacture of sleepers use is made of wave-grown timber or lopwood, mainly of top log, at length cutting the blank is oriented relative to the saw frame in such a way that the maximum quantity of large knots would be arranged on the lateral surfaces of the future sleeper, and at cross-cutting - so that the cut would pass between the areas of arrangement of knots. EFFECT: facilitated procedure. 7 dwgn
|
