'Threshing sledges' in the Bible

And he will take the old men of the city, and thorns of the desert, and threshing sledges, and with them he caused the men of Succoth to know.

the people also that were therein, brought he forth, and put them to the saw, and to threshing sledges of iron, and to axes of iron, and made them pass through the brickkiln, and thus used he to do unto all the cities of the sons of Ammon. And David and all the people returned unto Jerusalem.

And Araunah said to David, Let my lord the king take and offer up that which is good in his sight: see, here are oxen for the burnt-offering, and the threshing-sledges and implements of the oxen for wood.

and, the people that were therein, brought he forth, and cut with the saw and with threshing sledges of iron and with axes, thus also, used David to do unto all the cities of the son of Ammon, - and David and all the people returned to Jerusalem.

And Ornan said to David, Take it to thee, and let my lord the king do that which is good in his sight: see, I give the oxen for the burnt-offering, and the threshing-sledges for wood, and the wheat for the oblation; I give it all.

Thus says Yahweh, "For three transgressions of Damascus and for four I will not revoke [the punishment], because they threshed Gilead with threshing sledges of iron!