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A Rotary tiller is a motorised cultivator that works the soil by means of rotating blades. Rotary tillers are either self propelled or drawn behind a tractor and driven by a PTO power take off.
Small rotary tillers
A small rotary tiller known by the trademark rototiller and another, produced by the company Howard who produced a range of rotary tillers, was known as the rotovator.
The rototiller
Rotary tillers are popular with home gardeners who want large vegetable gardens. The garden may be tilled a few times before planting each crop. Rotary tillers may be rented for single-use applications, such as when planting grass.The small rototiller is typically propelled weakly forward by the rotating tines and do not have powered wheels and they cannot move backwards because such movement can seriously mangle the operater's feet. A rototiller works best when sunk into the soil, but this prevents it from being propelled forward by the tines. Dragging the rototiller backwards is easier and more effective than pushing it forward, but care must be taken to ensure that the operator does not stumble and pull the rototiller on top of himself. Rototilling is much faster than manual tilling, but not easier. Rototiller operation is exhausting work that can require great strength. Sub-surface objects, such as tree roots and buried garbage, can cause a rototiller to abruptly and violently move in any direction.
The rotovator
Unlike the rototiller, the self propelled rotovator was equipped with a gearbox and driven forward by wheels which had the advantage that the rotation speed of the blades could be set higher than the forward speed of the machine.Agricultural rotary tillers
Tractor-drawn rotary tillers are attached to a three point linkage and are driven by a power take off shaft. They are used for roadmaking and for cultivation between rows of vines.
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"Rotary tiller"