Show Found Plow That Turned Soil With Singing Sound Of or the many steps by which plows have progressed from the crooked stick powered by the muscles of ot man to modern methods of or turning the soil soli none were more Important than Im im- improvements Improvements pro undertaken by James Tamos Oliver beginning In 1553 Oliver wanted w a plow that would turn the soil soli with a singing sound says a n nr record r ord of the bureau of ot agricultural engineering Iron Cast-Iron plows made about that time were superior to wooden plows but they wore too rapidly and would not scour properly In the rich sticky soils of the Mississippi and Ohio val leys They rooted but would not In In- Invert Invert Invert vert the soil Oliver's Olivers experiments led him to ob oh- obtain obtaIn tain tamn several patents for the process of or hardening or chilling the nose and nd cutting edge of the share Thus he realized his ambition for a plow that sang as It cut Its way through rich prairie sod or heavy soil I I I II |