'Threshing sledges' in the Bible

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.