It has been there since 1805, when the lawnmower was human and had no incentive to support it.
In the 1805, the British Placknett invented the first machine to harvest grains and cut weeds, driven by a man, driven by a gear drive to mow the grass, which is the rudiment of a lawnmower.
In the 1830, Bill Pudding, a British textile engineer, was patented and praised for its roller mower.
1832, Lancems agricultural Machinery Company began mass production of roller lawn mower.
In the 1831, British textile master Kabilla obtained the exclusive patent of the world of roller mower. In the 1833, Lancems Agricultural Machinery Co., Ltd. began mass production of roller-type lawn mower.
19th century this lightweight and good control drum lawn mower is widely used in the green belt next to the traffic road.
In the 1902, British London Pines built a roller mower powered by an internal combustion engine, the principle of which has been extended to this day.
What we usually see on American country television is this lawn mower, which can be easily trimmed by using it. With the rapid rise of the lawn industry, China began to use storage reciprocating lawnmowers in the 21st century. At the end of 19th century, it was a very physical task to protect a lawn. For example, in the large estate of Blenheim (a village in western Bavaria, Germany), if 200 workers are employed, 50 of them are on the lawn. In the season when the meadows are crazy, grass needs to be cut about every 10 days. The lawnmowers hold very long tools (sickle: The blade is jagged and needs to be often used to grind the grindstone to keep it sharp) in a line of mowing (which actually works more like sawing grass with a saw). When the work is done, the lawn is full of sawn grass leaves, and then picks up the grass leaves on the ground to feed the cattle and sheep on the farm, saving time and reducing the damage to the meadows.
By parallel four-bar lifting device, rack, left and right single-wing weeding device, the whole machine deflection device.