This implement posseses several advan-ages, its wings being capable of expanding Dr unfolding automatically to any extent desired, and then automatically locking themselves, so as to remain firm and steady. By ,1ms being self-acting, the farmer is saved all .abor of adjusting, excepting the simple eleva-ion of a lever, and thus all necessity of chang-ng his position from behind the handles is ivoided. Joseph Summers, of Raleigh, Va., s the inventor and patentee of this device.