A lawn mower (also known as a mower, grass cutter or lawnmower) is a machine utilizing one or more revolving blades to cut a grass surface to an even height. The height of the cut grass may be fixed by the design of the mower, but generally is adjustable by the operator, typically by a single master lever, or by a lever or nut and bolt on each of the machine’s wheels.
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invented by James Beaumont Neilson
Hot blast refers to the preheating of air blown into a blast furnace or other…
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invented by Karl Von Drais
The dandy horse, a derogatory term for what was first called a Laufmaschine (in…
Reinforced concrete
invented by Francois Coignet
Reinforced concrete (RC), also called reinforced cement concrete (RCC), is a…
Steam Turbine
invented by Charles Persons
A steam turbine is a machine that extracts thermal energy from pressurized…
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