“Oh, father, the ploughshares I ordered, has he brought them along?”
Leo Tolstoy. Anna Karenina (1878)
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The peasant is a short, thick-set man, old, and clothed in rags. The four horses that he urges forward are thin and gaunt; the ploughshare is buried in rough, unyielding soil.
George Sand. The Devil's Pool (George B. Ives translation) (1901)
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[...] and the Königin Luise, turning for the moment her sword into ploughshare,
Cecil Scott Forester. The African Queen, p.13 (1935)
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The heavy rain seemed to have made business slack; people tended to stay safely inside, rather than running over their feet with ploughshares or falling off roofs.