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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.
Two archetypes of this type of mower are the Bush Hog which is made by Bush Hog, Inc. [1] of Selma, Alabama, and the Flex-Wing by RhinoAg of Gibson City, Illinois.The formal name for this type of implement is a rotary cutter or rotary mower, although it differs from mowers in that it does not cut with a sharp blade, but rather severs with an intentionally very dull wedge-like blade.
The mower is a variation of the petrol-powered rotary push lawn mower, but uses a fan above the mower's spinning blades to allow the mower's body to hover over the lawn. The mower is claimed to be more manoeuvrable and easier to push than wheeled petrol mowers, while delivering similar results.
From 1978 on, alternators and starter motors were standard issue. Case engineered a 60-inch cutting width mower deck to be introduced for the 1980 model year at the same time the more powerful 448 became available. In order to fit that larger mower deck under the tractor, two inches were added to the frame between the seat base and the dash tower.
An American rotary lawnmower mechanic (b. 1927) when queried as to the first rotary mower he knew of - produced a picture of a machine mass produced around 1939 which originally used a Ford Model A or B electric starter motor turned vertically with a steel disc attached to the output shaft having common sickle bar trapezoidal blades riveted upon it.
The Worthington Mower Company, originally called the Shawnee Mower Factory, produced lawn mowers and light-duty tractors in the United States from the early 1920s until around 1959. Founded by Charles Campbell Worthington and run as a family business, in 1945 it was purchased by Jacobsen Manufacturing .
Many people experimented with rotary blade mowers in the late 1920s and early 1930s, and Power Specialties Ltd. introduced a gasoline-powered rotary mower. Kut Kwick replaced the saw blade of the "Pulp Saw" with a double-edged blade and a cutter deck, converting the "Pulp Saw" into the first ever out-front rotary mower. [10]
Dixie Chopper claims to build the world's fastest lawn mowers. The most famous example was the Jet Mower, custom built by Art Evans in 1991 using a 150 HP Solar T62 APU from a Chinook Helicopter. [7] This mower was featured in a 1993 episode of Home Improvement. Dixie Chopper's promotional video includes a brief clip from the episode. [8]