File:A series of steel rod teeth set between two wheels with a lever attached to dump hay at a given spot as horses pulled it across (a8dddcbe-eae2-416c-9b75-29838d9670a0).png
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A_series_of_steel_rod_teeth_set_between_two_wheels_with_a_lever_attached_to_dump_hay_at_a_given_spot_as_horses_pulled_it_across_(a8dddcbe-eae2-416c-9b75-29838d9670a0).png (320 × 164 pixels, file size: 138 KB, MIME type: image/png)