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The first known lawn mower had a cylinder cutting gear made of iron. [citation needed] It was used to mow sporting grounds and wide-ranging gardens.As manufacturers changed the design and structure of mowers, the cutting mechanism also developed and evolved into several varieties, including cylinder/reel blades, deck blades, mulching blades, and lifting blades.
In 1954, Pond introduced his first 4-wheel lawn tractor, an event which altered substantially the lawn care manufacturing business. By 1957, his Wheel Horse Products company recorded sales over $1 million (US$10,848,341 in 2023 dollars [ 2 ] ) for the first time.
A wind transducer is a device used by sailors to receive a real-time measurement of wind speed and direction. [1] [2] A wind transducer is usually mounted on the masthead of a sailing boat and is occasionally used by power boats too. The wind speed and direction measurements are more critical to sailing boats than to power boats.
A sail is a tensile structure, which is made from fabric or other membrane materials, that uses wind power to propel sailing craft, including sailing ships, sailboats, windsurfers, ice boats, and even sail-powered land vehicles. Sails may be made from a combination of woven materials—including canvas or polyester cloth, laminated membranes or ...
A residential riding or "ride-on" mower A battery-powered robotic lawn mower A commercial zero-turn mower. A lawn mower (also known as a grass cutter or simply mower, also often spelled lawnmower) is a device utilizing one or more revolving blades (or a reel) to cut a grass surface to an even height. The height of the cut grass may be fixed by ...
A skilled woodworker, Jacobsen made patterns for automobiles, agricultural machines and electrical equipment. Jacobsen restructured his business as Thor Machine Works in 1917. In 1921 it released the 4-Acre mower, a gasoline-powered reel mower marketed through Jacobsen Manufacturing. Not long after the Greens Mower was released.
A flail mower is a type of powered garden/agricultural equipment which is used to deal with heavier grass/scrub which a normal lawn mower could not cope with. Some smaller models are self-powered, but many are PTO driven implements, which can attach to the three-point hitches found on the rear of most tractors .
Spring sails were invented by Scottish millwright Andrew Meikle in 1772. The sail is divided into a number of bays, each having a number of shutters. All the shutters are joined together by a shutter bar, and the force required for the wind to open the shutters is adjusted by a separate spring on each sail. Although automatic in operation, the ...